Address second CodeRabbit review round

changes/fix-windows-coderabbit-review-follow-ups.md

@@ -0,0 +1,4 @@
+type: fixed
+area: overlay
+
+- Addressed the latest CodeRabbit follow-ups on the Windows overlay flow, including exact mpv target resolution, lower-overlay helper arguments, Win32 failure detection, and overlay cleanup on tracker loss.

package.json

@@ -2,7 +2,7 @@
   "name": "subminer",
   "productName": "SubMiner",
   "desktopName": "SubMiner.desktop",
-  "version": "0.12.0-beta.2",
+  "version": "0.12.0-beta.1",
   "description": "All-in-one sentence mining overlay with AnkiConnect and dictionary integration",
   "packageManager": "bun@1.3.5",
   "main": "dist/main-entry.js",

plugin/subminer/bootstrap.lua

@@ -14,7 +14,7 @@ function M.init()
 	local utils = require("mp.utils")
 
 	local options_helper = require("options")
-	local environment = require("environment").create({ mp = mp })
+	local environment = require("environment").create({ mp = mp, utils = utils })
 	local opts = options_helper.load(options_lib, environment.default_socket_path())
 	local state = require("state").new()
 
@@ -61,6 +61,9 @@ function M.init()
 	ctx.process = make_lazy_proxy("process", function()
 		return require("process").create(ctx)
 	end)
+	ctx.session_bindings = make_lazy_proxy("session_bindings", function()
+		return require("session_bindings").create(ctx)
+	end)
 	ctx.ui = make_lazy_proxy("ui", function()
 		return require("ui").create(ctx)
 	end)
@@ -72,6 +75,7 @@ function M.init()
 	end)
 
 	ctx.ui.register_keybindings()
+	ctx.session_bindings.register_bindings()
 	ctx.messages.register_script_messages()
 	ctx.lifecycle.register_lifecycle_hooks()
 	ctx.log.subminer_log("info", "lifecycle", "SubMiner plugin loaded")

plugin/subminer/environment.lua

@@ -1,7 +1,9 @@
 local M = {}
+local unpack_fn = table.unpack or unpack
 
 function M.create(ctx)
 	local mp = ctx.mp
+	local utils = ctx.utils
 
 	local detected_backend = nil
 	local app_running_cache_value = nil
@@ -30,6 +32,57 @@ function M.create(ctx)
 		return "/tmp/subminer-socket"
 	end
 
+	local function path_separator()
+		return is_windows() and "\\" or "/"
+	end
+
+	local function join_path(...)
+		local parts = { ... }
+		if utils and type(utils.join_path) == "function" then
+			return utils.join_path(unpack_fn(parts))
+		end
+		return table.concat(parts, path_separator())
+	end
+
+	local function file_exists(path)
+		if not utils or type(utils.file_info) ~= "function" then
+			return false
+		end
+		return utils.file_info(path) ~= nil
+	end
+
+	local function resolve_subminer_config_dir()
+		local home = os.getenv("HOME") or os.getenv("USERPROFILE") or ""
+		local candidates = {}
+		if is_windows() then
+			local app_data = os.getenv("APPDATA") or join_path(home, "AppData", "Roaming")
+			candidates = {
+				join_path(app_data, "SubMiner"),
+			}
+		else
+			local xdg_config_home = os.getenv("XDG_CONFIG_HOME")
+			local primary_base = (type(xdg_config_home) == "string" and xdg_config_home ~= "")
+					and xdg_config_home
+				or join_path(home, ".config")
+			candidates = {
+				join_path(primary_base, "SubMiner"),
+				join_path(home, ".config", "SubMiner"),
+			}
+		end
+
+		for _, dir in ipairs(candidates) do
+			if file_exists(join_path(dir, "config.jsonc")) or file_exists(join_path(dir, "config.json")) or file_exists(dir) then
+				return dir
+			end
+		end
+
+		return candidates[1]
+	end
+
+	local function resolve_session_bindings_artifact_path()
+		return join_path(resolve_subminer_config_dir(), "session-bindings.json")
+	end
+
 	local function is_linux()
 		return not is_windows() and not is_macos()
 	end
@@ -198,7 +251,10 @@ function M.create(ctx)
 		is_windows = is_windows,
 		is_macos = is_macos,
 		is_linux = is_linux,
+		join_path = join_path,
 		default_socket_path = default_socket_path,
+		resolve_subminer_config_dir = resolve_subminer_config_dir,
+		resolve_session_bindings_artifact_path = resolve_session_bindings_artifact_path,
 		is_subminer_process_running = is_subminer_process_running,
 		is_subminer_app_running = is_subminer_app_running,
 		is_subminer_app_running_async = is_subminer_app_running_async,

plugin/subminer/messages.lua

@@ -47,6 +47,9 @@ function M.create(ctx)
 		mp.register_script_message("subminer-stats-toggle", function()
 			mp.osd_message("Stats: press ` (backtick) in overlay", 3)
 		end)
+		mp.register_script_message("subminer-reload-session-bindings", function()
+			ctx.session_bindings.reload_bindings()
+		end)
 	end
 
 	return {

plugin/subminer/session_bindings.lua

@@ -0,0 +1,316 @@
+local M = {}
+
+local unpack_fn = table.unpack or unpack
+
+local KEY_NAME_MAP = {
+	Space = "SPACE",
+	Tab = "TAB",
+	Enter = "ENTER",
+	Escape = "ESC",
+	Backspace = "BS",
+	Delete = "DEL",
+	ArrowUp = "UP",
+	ArrowDown = "DOWN",
+	ArrowLeft = "LEFT",
+	ArrowRight = "RIGHT",
+	Slash = "/",
+	Backslash = "\\",
+	Minus = "-",
+	Equal = "=",
+	Comma = ",",
+	Period = ".",
+	Quote = "'",
+	Semicolon = ";",
+	BracketLeft = "[",
+	BracketRight = "]",
+	Backquote = "`",
+}
+
+local MODIFIER_MAP = {
+	ctrl = "Ctrl",
+	alt = "Alt",
+	shift = "Shift",
+	meta = "Meta",
+}
+
+function M.create(ctx)
+	local mp = ctx.mp
+	local utils = ctx.utils
+	local state = ctx.state
+	local process = ctx.process
+	local environment = ctx.environment
+	local subminer_log = ctx.log.subminer_log
+	local show_osd = ctx.log.show_osd
+
+	local function read_file(path)
+		local handle = io.open(path, "r")
+		if not handle then
+			return nil
+		end
+		local content = handle:read("*a")
+		handle:close()
+		return content
+	end
+
+	local function remove_binding_names(names)
+		for _, name in ipairs(names) do
+			mp.remove_key_binding(name)
+		end
+		for index = #names, 1, -1 do
+			names[index] = nil
+		end
+	end
+
+	local function key_code_to_mpv_name(code)
+		if KEY_NAME_MAP[code] then
+			return KEY_NAME_MAP[code]
+		end
+
+		local letter = code:match("^Key([A-Z])$")
+		if letter then
+			return string.lower(letter)
+		end
+
+		local digit = code:match("^Digit([0-9])$")
+		if digit then
+			return digit
+		end
+
+		local function_key = code:match("^(F%d+)$")
+		if function_key then
+			return function_key
+		end
+
+		return nil
+	end
+
+	local function key_spec_to_mpv_binding(key)
+		if type(key) ~= "table" then
+			return nil
+		end
+
+		local key_name = key_code_to_mpv_name(key.code)
+		if not key_name then
+			return nil
+		end
+
+		local parts = {}
+		for _, modifier in ipairs(key.modifiers or {}) do
+			local mapped = MODIFIER_MAP[modifier]
+			if mapped then
+				parts[#parts + 1] = mapped
+			end
+		end
+		parts[#parts + 1] = key_name
+		return table.concat(parts, "+")
+	end
+
+	local function build_cli_args(action_id, payload)
+		if action_id == "toggleVisibleOverlay" then
+			return { "--toggle-visible-overlay" }
+		elseif action_id == "copySubtitle" then
+			return { "--copy-subtitle" }
+		elseif action_id == "copySubtitleMultiple" then
+			return { "--copy-subtitle-count", tostring(payload and payload.count or 1) }
+		elseif action_id == "updateLastCardFromClipboard" then
+			return { "--update-last-card-from-clipboard" }
+		elseif action_id == "triggerFieldGrouping" then
+			return { "--trigger-field-grouping" }
+		elseif action_id == "triggerSubsync" then
+			return { "--trigger-subsync" }
+		elseif action_id == "mineSentence" then
+			return { "--mine-sentence" }
+		elseif action_id == "mineSentenceMultiple" then
+			return { "--mine-sentence-count", tostring(payload and payload.count or 1) }
+		elseif action_id == "toggleSecondarySub" then
+			return { "--toggle-secondary-sub" }
+		elseif action_id == "markAudioCard" then
+			return { "--mark-audio-card" }
+		elseif action_id == "openRuntimeOptions" then
+			return { "--open-runtime-options" }
+		elseif action_id == "openJimaku" then
+			return { "--open-jimaku" }
+		elseif action_id == "openYoutubePicker" then
+			return { "--open-youtube-picker" }
+		elseif action_id == "openPlaylistBrowser" then
+			return { "--open-playlist-browser" }
+		elseif action_id == "replayCurrentSubtitle" then
+			return { "--replay-current-subtitle" }
+		elseif action_id == "playNextSubtitle" then
+			return { "--play-next-subtitle" }
+		elseif action_id == "shiftSubDelayPrevLine" then
+			return { "--shift-sub-delay-prev-line" }
+		elseif action_id == "shiftSubDelayNextLine" then
+			return { "--shift-sub-delay-next-line" }
+		end
+
+		return nil
+	end
+
+	local function invoke_cli_action(action_id, payload)
+		if not process.check_binary_available() then
+			show_osd("Error: binary not found")
+			return
+		end
+
+		local cli_args = build_cli_args(action_id, payload)
+		if not cli_args then
+			subminer_log("warn", "session-bindings", "No CLI mapping for action: " .. tostring(action_id))
+			return
+		end
+
+		local args = { state.binary_path }
+		for _, arg in ipairs(cli_args) do
+			args[#args + 1] = arg
+		end
+		process.run_binary_command_async(args, function(ok, result, error)
+			if ok then
+				return
+			end
+			local reason = error or (result and result.stderr) or "unknown error"
+			subminer_log("warn", "session-bindings", "Session action failed: " .. tostring(reason))
+			show_osd("Session action failed")
+		end)
+	end
+
+	local function clear_numeric_selection(show_cancelled)
+		if state.session_numeric_selection and state.session_numeric_selection.timeout then
+			state.session_numeric_selection.timeout:kill()
+		end
+		state.session_numeric_selection = nil
+		remove_binding_names(state.session_numeric_binding_names)
+		if show_cancelled then
+			show_osd("Cancelled")
+		end
+	end
+
+	local function start_numeric_selection(action_id, timeout_ms)
+		clear_numeric_selection(false)
+		for digit = 1, 9 do
+			local digit_string = tostring(digit)
+			local name = "subminer-session-digit-" .. digit_string
+			state.session_numeric_binding_names[#state.session_numeric_binding_names + 1] = name
+			mp.add_forced_key_binding(digit_string, name, function()
+				clear_numeric_selection(false)
+				invoke_cli_action(action_id, { count = digit })
+			end)
+		end
+
+		state.session_numeric_binding_names[#state.session_numeric_binding_names + 1] =
+			"subminer-session-digit-cancel"
+		mp.add_forced_key_binding("ESC", "subminer-session-digit-cancel", function()
+			clear_numeric_selection(true)
+		end)
+
+		state.session_numeric_selection = {
+			action_id = action_id,
+			timeout = mp.add_timeout((timeout_ms or 3000) / 1000, function()
+				clear_numeric_selection(false)
+				show_osd(action_id == "copySubtitleMultiple" and "Copy timeout" or "Mine timeout")
+			end),
+		}
+
+		show_osd(
+			action_id == "copySubtitleMultiple"
+					and "Copy how many lines? Press 1-9 (Esc to cancel)"
+				or "Mine how many lines? Press 1-9 (Esc to cancel)"
+		)
+	end
+
+	local function execute_mpv_command(command)
+		if type(command) ~= "table" or command[1] == nil then
+			return
+		end
+		mp.commandv(unpack_fn(command))
+	end
+
+	local function handle_binding(binding, numeric_selection_timeout_ms)
+		if binding.actionType == "mpv-command" then
+			execute_mpv_command(binding.command)
+			return
+		end
+
+		if binding.actionId == "copySubtitleMultiple" or binding.actionId == "mineSentenceMultiple" then
+			start_numeric_selection(binding.actionId, numeric_selection_timeout_ms)
+			return
+		end
+
+		invoke_cli_action(binding.actionId, binding.payload)
+	end
+
+	local function load_artifact()
+		local artifact_path = environment.resolve_session_bindings_artifact_path()
+		local raw = read_file(artifact_path)
+		if not raw or raw == "" then
+			return nil, "Missing session binding artifact: " .. tostring(artifact_path)
+		end
+
+		local parsed, parse_error = utils.parse_json(raw)
+		if not parsed then
+			return nil, "Failed to parse session binding artifact: " .. tostring(parse_error)
+		end
+		if type(parsed) ~= "table" or type(parsed.bindings) ~= "table" then
+			return nil, "Invalid session binding artifact"
+		end
+
+		return parsed, nil
+	end
+
+	local function clear_bindings()
+		clear_numeric_selection(false)
+		remove_binding_names(state.session_binding_names)
+	end
+
+	local function register_bindings()
+		local artifact, load_error = load_artifact()
+		if not artifact then
+			subminer_log("warn", "session-bindings", load_error)
+			return false
+		end
+
+		clear_numeric_selection(false)
+
+		local previous_binding_names = state.session_binding_names
+		local next_binding_names = {}
+		state.session_binding_names = next_binding_names
+
+		local timeout_ms = tonumber(artifact.numericSelectionTimeoutMs) or 3000
+		for index, binding in ipairs(artifact.bindings) do
+			local key_name = key_spec_to_mpv_binding(binding.key)
+			if key_name then
+				local name = "subminer-session-binding-" .. tostring(index)
+				next_binding_names[#next_binding_names + 1] = name
+				mp.add_forced_key_binding(key_name, name, function()
+					handle_binding(binding, timeout_ms)
+				end)
+			else
+				subminer_log(
+					"warn",
+					"session-bindings",
+					"Skipped unsupported key code from artifact: " .. tostring(binding.key and binding.key.code or "unknown")
+				)
+			end
+		end
+
+		remove_binding_names(previous_binding_names)
+
+		subminer_log(
+			"info",
+			"session-bindings",
+			"Registered " .. tostring(#next_binding_names) .. " shared session bindings"
+		)
+		return true
+	end
+
+	local function reload_bindings()
+		return register_bindings()
+	end
+
+	return {
+		register_bindings = register_bindings,
+		reload_bindings = reload_bindings,
+		clear_bindings = clear_bindings,
+	}
+end
+
+return M

plugin/subminer/state.lua

@@ -33,6 +33,9 @@ function M.new()
 		auto_play_ready_timeout = nil,
 		auto_play_ready_osd_timer = nil,
 		suppress_ready_overlay_restore = false,
+		session_binding_names = {},
+		session_numeric_binding_names = {},
+		session_numeric_selection = nil,
 	}
 end
 

scripts/get-mpv-window-windows.ps1

@@ -1,5 +1,5 @@
 param(
-  [ValidateSet('geometry', 'foreground-process', 'bind-overlay', 'lower-overlay', 'set-owner', 'clear-owner')]
+  [ValidateSet('geometry', 'foreground-process', 'bind-overlay', 'lower-overlay', 'set-owner', 'clear-owner', 'target-hwnd')]
   [string]$Mode = 'geometry',
   [string]$SocketPath,
   [string]$OverlayWindowHandle
@@ -64,6 +64,9 @@ public static class SubMinerWindowsHelper {
   [DllImport("user32.dll", SetLastError = true)]
   public static extern IntPtr SetWindowLongPtr(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
 
+  [DllImport("kernel32.dll")]
+  public static extern void SetLastError(uint dwErrCode);
+
   [DllImport("dwmapi.dll")]
   public static extern int DwmGetWindowAttribute(IntPtr hwnd, int dwAttribute, out RECT pvAttribute, int cbAttribute);
 }
@@ -83,6 +86,38 @@ public static class SubMinerWindowsHelper {
   $HWND_TOPMOST = [IntPtr](-1)
   $HWND_NOTOPMOST = [IntPtr](-2)
 
+  function Assert-SetWindowLongPtrSucceeded {
+    param(
+      [IntPtr]$Result,
+      [string]$Operation
+    )
+
+    if ($Result -ne [IntPtr]::Zero) {
+      return
+    }
+
+    if ([Runtime.InteropServices.Marshal]::GetLastWin32Error() -eq 0) {
+      return
+    }
+
+    $lastError = [Runtime.InteropServices.Marshal]::GetLastWin32Error()
+    throw "$Operation failed ($lastError)"
+  }
+
+  function Assert-SetWindowPosSucceeded {
+    param(
+      [bool]$Result,
+      [string]$Operation
+    )
+
+    if ($Result) {
+      return
+    }
+
+    $lastError = [Runtime.InteropServices.Marshal]::GetLastWin32Error()
+    throw "$Operation failed ($lastError)"
+  }
+
   if ($Mode -eq 'foreground-process') {
     $foregroundWindow = [SubMinerWindowsHelper]::GetForegroundWindow()
     if ($foregroundWindow -eq [IntPtr]::Zero) {
@@ -115,7 +150,9 @@ public static class SubMinerWindowsHelper {
     }
 
     [IntPtr]$overlayWindow = [IntPtr]([int64]$OverlayWindowHandle)
-    [void][SubMinerWindowsHelper]::SetWindowLongPtr($overlayWindow, $GWLP_HWNDPARENT, [IntPtr]::Zero)
+    [SubMinerWindowsHelper]::SetLastError(0)
+    $result = [SubMinerWindowsHelper]::SetWindowLongPtr($overlayWindow, $GWLP_HWNDPARENT, [IntPtr]::Zero)
+    Assert-SetWindowLongPtrSucceeded -Result $result -Operation 'clear-owner'
     Write-Output 'ok'
     exit 0
   }
@@ -281,6 +318,11 @@ public static class SubMinerWindowsHelper {
     $mpvMatches | Sort-Object -Property Area, Width, Height -Descending | Select-Object -First 1
   }
 
+  if ($Mode -eq 'target-hwnd') {
+    Write-Output "$($bestMatch.HWnd)"
+    exit 0
+  }
+
   if ($Mode -eq 'set-owner') {
     if ([string]::IsNullOrWhiteSpace($OverlayWindowHandle)) {
       [Console]::Error.WriteLine('overlay-window-handle-required')
@@ -289,7 +331,9 @@ public static class SubMinerWindowsHelper {
 
     [IntPtr]$overlayWindow = [IntPtr]([int64]$OverlayWindowHandle)
     $targetWindow = [IntPtr]$bestMatch.HWnd
-    [void][SubMinerWindowsHelper]::SetWindowLongPtr($overlayWindow, $GWLP_HWNDPARENT, $targetWindow)
+    [SubMinerWindowsHelper]::SetLastError(0)
+    $result = [SubMinerWindowsHelper]::SetWindowLongPtr($overlayWindow, $GWLP_HWNDPARENT, $targetWindow)
+    Assert-SetWindowLongPtrSucceeded -Result $result -Operation 'set-owner'
     Write-Output 'ok'
     exit 0
   }
@@ -302,20 +346,26 @@ public static class SubMinerWindowsHelper {
 
     [IntPtr]$overlayWindow = [IntPtr]([int64]$OverlayWindowHandle)
     $targetWindow = [IntPtr]$bestMatch.HWnd
-    [void][SubMinerWindowsHelper]::SetWindowLongPtr($overlayWindow, $GWLP_HWNDPARENT, $targetWindow)
+    [SubMinerWindowsHelper]::SetLastError(0)
+    $result = [SubMinerWindowsHelper]::SetWindowLongPtr($overlayWindow, $GWLP_HWNDPARENT, $targetWindow)
+    Assert-SetWindowLongPtrSucceeded -Result $result -Operation 'bind-overlay owner assignment'
     $targetWindowExStyle = [SubMinerWindowsHelper]::GetWindowLong($targetWindow, $GWL_EXSTYLE)
     $targetWindowIsTopmost = ($targetWindowExStyle -band $WS_EX_TOPMOST) -ne 0
 
     $overlayExStyle = [SubMinerWindowsHelper]::GetWindowLong($overlayWindow, $GWL_EXSTYLE)
     $overlayIsTopmost = ($overlayExStyle -band $WS_EX_TOPMOST) -ne 0
     if ($targetWindowIsTopmost -and -not $overlayIsTopmost) {
-      [void][SubMinerWindowsHelper]::SetWindowPos(
+      [SubMinerWindowsHelper]::SetLastError(0)
+      $result = [SubMinerWindowsHelper]::SetWindowPos(
         $overlayWindow, $HWND_TOPMOST, 0, 0, 0, 0, $SWP_FLAGS
       )
+      Assert-SetWindowPosSucceeded -Result $result -Operation 'bind-overlay topmost adjustment'
     } elseif (-not $targetWindowIsTopmost -and $overlayIsTopmost) {
-      [void][SubMinerWindowsHelper]::SetWindowPos(
+      [SubMinerWindowsHelper]::SetLastError(0)
+      $result = [SubMinerWindowsHelper]::SetWindowPos(
         $overlayWindow, $HWND_NOTOPMOST, 0, 0, 0, 0, $SWP_FLAGS
       )
+      Assert-SetWindowPosSucceeded -Result $result -Operation 'bind-overlay notopmost adjustment'
     }
 
     $GW_HWNDPREV = 3
@@ -335,9 +385,11 @@ public static class SubMinerWindowsHelper {
       }
     }
 
-    [void][SubMinerWindowsHelper]::SetWindowPos(
+    [SubMinerWindowsHelper]::SetLastError(0)
+    $result = [SubMinerWindowsHelper]::SetWindowPos(
       $overlayWindow, $insertAfter, 0, 0, 0, 0, $SWP_FLAGS
     )
+    Assert-SetWindowPosSucceeded -Result $result -Operation 'bind-overlay z-order adjustment'
     Write-Output 'ok'
     exit 0
   }

scripts/mkv-to-readme-video.sh

@@ -28,6 +28,27 @@ USAGE
 force=0
 generate_webp=0
 input=""
+ffmpeg_bin="${FFMPEG_BIN:-ffmpeg}"
+
+normalize_path() {
+	local value="$1"
+	if command -v cygpath > /dev/null 2>&1; then
+		case "$value" in
+			[A-Za-z]:\\* | [A-Za-z]:/*)
+				cygpath -u "$value"
+				return 0
+				;;
+		esac
+	fi
+	if [[ "$value" =~ ^([A-Za-z]):[\\/](.*)$ ]]; then
+		local drive="${BASH_REMATCH[1],,}"
+		local rest="${BASH_REMATCH[2]}"
+		rest="${rest//\\//}"
+		printf '/mnt/%s/%s\n' "$drive" "$rest"
+		return 0
+	fi
+	printf '%s\n' "$value"
+}
 
 while [[ $# -gt 0 ]]; do
 	case "$1" in
@@ -63,9 +84,19 @@ if [[ -z "$input" ]]; then
 	exit 1
 fi
 
-if ! command -v ffmpeg > /dev/null 2>&1; then
-	echo "Error: ffmpeg is not installed or not in PATH." >&2
-	exit 1
+input="$(normalize_path "$input")"
+ffmpeg_bin="$(normalize_path "$ffmpeg_bin")"
+
+if [[ "$ffmpeg_bin" == */* ]]; then
+	if [[ ! -x "$ffmpeg_bin" ]]; then
+		echo "Error: ffmpeg binary is not executable: $ffmpeg_bin" >&2
+		exit 1
+	fi
+else
+	if ! command -v "$ffmpeg_bin" > /dev/null 2>&1; then
+		echo "Error: ffmpeg is not installed or not in PATH." >&2
+		exit 1
+	fi
 fi
 
 if [[ ! -f "$input" ]]; then
@@ -102,7 +133,7 @@ fi
 
 has_encoder() {
 	local encoder="$1"
-	ffmpeg -hide_banner -encoders 2> /dev/null | awk -v encoder="$encoder" '$2 == encoder { found = 1 } END { exit(found ? 0 : 1) }'
+	"$ffmpeg_bin" -hide_banner -encoders 2> /dev/null | awk -v encoder="$encoder" '$2 == encoder { found = 1 } END { exit(found ? 0 : 1) }'
 }
 
 pick_webp_encoder() {
@@ -123,7 +154,7 @@ webm_vf="${crop_vf},fps=30"
 echo "Generating MP4: $mp4_out"
 if has_encoder "h264_nvenc"; then
 	echo "Trying GPU encoder for MP4: h264_nvenc"
-	if ffmpeg "$overwrite_flag" -i "$input" \
+	if "$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 		-vf "$crop_vf" \
 		-c:v h264_nvenc -preset p6 -rc:v vbr -cq:v 20 -b:v 0 \
 		-pix_fmt yuv420p -movflags +faststart \
@@ -132,7 +163,7 @@ if has_encoder "h264_nvenc"; then
 		:
 	else
 		echo "GPU MP4 encode failed; retrying with CPU encoder: libx264"
-		ffmpeg "$overwrite_flag" -i "$input" \
+		"$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 			-vf "$crop_vf" \
 			-c:v libx264 -preset slow -crf 20 \
 			-profile:v high -level 4.1 -pix_fmt yuv420p \
@@ -142,7 +173,7 @@ if has_encoder "h264_nvenc"; then
 	fi
 else
 	echo "Using CPU encoder for MP4: libx264"
-	ffmpeg "$overwrite_flag" -i "$input" \
+	"$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 		-vf "$crop_vf" \
 		-c:v libx264 -preset slow -crf 20 \
 		-profile:v high -level 4.1 -pix_fmt yuv420p \
@@ -154,7 +185,7 @@ fi
 echo "Generating WebM: $webm_out"
 if has_encoder "av1_nvenc"; then
 	echo "Trying GPU encoder for WebM: av1_nvenc"
-	if ffmpeg "$overwrite_flag" -i "$input" \
+	if "$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 		-vf "$webm_vf" \
 		-c:v av1_nvenc -preset p6 -cq:v 34 -b:v 0 \
 		-c:a libopus -b:a 96k \
@@ -162,7 +193,7 @@ if has_encoder "av1_nvenc"; then
 		:
 	else
 		echo "GPU WebM encode failed; retrying with CPU encoder: libvpx-vp9"
-		ffmpeg "$overwrite_flag" -i "$input" \
+		"$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 			-vf "$webm_vf" \
 			-c:v libvpx-vp9 -crf 34 -b:v 0 \
 			-row-mt 1 -threads 8 \
@@ -171,7 +202,7 @@ if has_encoder "av1_nvenc"; then
 	fi
 else
 	echo "Using CPU encoder for WebM: libvpx-vp9"
-	ffmpeg "$overwrite_flag" -i "$input" \
+	"$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 		-vf "$webm_vf" \
 		-c:v libvpx-vp9 -crf 34 -b:v 0 \
 		-row-mt 1 -threads 8 \
@@ -185,7 +216,7 @@ if [[ "$generate_webp" -eq 1 ]]; then
 		exit 1
 	fi
 	echo "Generating animated WebP with $webp_encoder: $webp_out"
-	ffmpeg "$overwrite_flag" -i "$input" \
+	"$ffmpeg_bin" "$overwrite_flag" -i "$input" \
 		-vf "${crop_vf},fps=24,scale=960:-1:flags=lanczos" \
 		-c:v "$webp_encoder" \
 		-q:v 80 \
@@ -195,7 +226,7 @@ if [[ "$generate_webp" -eq 1 ]]; then
 fi
 
 echo "Generating poster: $poster_out"
-ffmpeg "$overwrite_flag" -ss 00:00:05 -i "$input" \
+"$ffmpeg_bin" "$overwrite_flag" -ss 00:00:05 -i "$input" \
 	-vf "$crop_vf" \
 	-vframes 1 \
 	-q:v 2 \

scripts/mkv-to-readme-video.test.ts

@@ -19,11 +19,33 @@ function writeExecutable(filePath: string, contents: string): void {
   fs.chmodSync(filePath, 0o755);
 }
 
+function shellQuote(value: string): string {
+  return `'${value.replace(/'/g, `'\"'\"'`)}'`;
+}
+
+function toBashPath(filePath: string): string {
+  if (process.platform !== 'win32') return filePath;
+
+  const normalized = filePath.replace(/\\/g, '/');
+  const match = normalized.match(/^([A-Za-z]):\/(.*)$/);
+  if (!match) return normalized;
+
+  const drive = match[1]!;
+  const rest = match[2]!;
+  const probe = spawnSync('bash', ['-c', 'uname -s'], { encoding: 'utf8' });
+  if (probe.status === 0 && /linux/i.test(probe.stdout)) {
+    return `/mnt/${drive.toLowerCase()}/${rest}`;
+  }
+
+  return `${drive.toUpperCase()}:/${rest}`;
+}
+
 test('mkv-to-readme-video accepts libwebp_anim when libwebp is unavailable', () => {
   withTempDir((root) => {
     const binDir = path.join(root, 'bin');
     const inputPath = path.join(root, 'sample.mkv');
     const ffmpegLogPath = path.join(root, 'ffmpeg-args.log');
+    const ffmpegLogPathBash = toBashPath(ffmpegLogPath);
 
     fs.mkdirSync(binDir, { recursive: true });
     fs.writeFileSync(inputPath, 'fake-video', 'utf8');
@@ -44,22 +66,33 @@ EOF
   exit 0
 fi
 
-printf '%s\\n' "$*" >> "${ffmpegLogPath}"
+if [[ "$#" -eq 0 ]]; then
+  exit 0
+fi
+
+printf '%s\\n' "$*" >> "${ffmpegLogPathBash}"
 output=""
 for arg in "$@"; do
   output="$arg"
 done
+if [[ -z "$output" ]]; then
+  exit 0
+fi
 mkdir -p "$(dirname "$output")"
 touch "$output"
 `,
     );
 
-    const result = spawnSync('bash', ['scripts/mkv-to-readme-video.sh', '--webp', inputPath], {
+    const ffmpegShimPath = toBashPath(path.join(binDir, 'ffmpeg'));
+    const ffmpegShimDir = toBashPath(binDir);
+    const inputBashPath = toBashPath(inputPath);
+    const command = [
+      `chmod +x ${shellQuote(ffmpegShimPath)}`,
+      `PATH=${shellQuote(`${ffmpegShimDir}:`)}"$PATH"`,
+      `scripts/mkv-to-readme-video.sh --webp ${shellQuote(inputBashPath)}`,
+    ].join('; ');
+    const result = spawnSync('bash', ['-lc', command], {
       cwd: process.cwd(),
-      env: {
-        ...process.env,
-        PATH: `${binDir}:${process.env.PATH || ''}`,
-      },
       encoding: 'utf8',
     });
 

scripts/update-aur-package.sh

@@ -13,6 +13,26 @@ appimage=
 wrapper=
 assets=
 
+normalize_path() {
+  local value="$1"
+  if command -v cygpath >/dev/null 2>&1; then
+    case "$value" in
+      [A-Za-z]:\\* | [A-Za-z]:/*)
+        cygpath -u "$value"
+        return 0
+        ;;
+    esac
+  fi
+  if [[ "$value" =~ ^([A-Za-z]):[\\/](.*)$ ]]; then
+    local drive="${BASH_REMATCH[1],,}"
+    local rest="${BASH_REMATCH[2]}"
+    rest="${rest//\\//}"
+    printf '/mnt/%s/%s\n' "$drive" "$rest"
+    return 0
+  fi
+  printf '%s\n' "$value"
+}
+
 while [[ $# -gt 0 ]]; do
   case "$1" in
     --pkg-dir)
@@ -53,6 +73,10 @@ if [[ -z "$pkg_dir" || -z "$version" || -z "$appimage" || -z "$wrapper" || -z "$
 fi
 
 version="${version#v}"
+pkg_dir="$(normalize_path "$pkg_dir")"
+appimage="$(normalize_path "$appimage")"
+wrapper="$(normalize_path "$wrapper")"
+assets="$(normalize_path "$assets")"
 pkgbuild="${pkg_dir}/PKGBUILD"
 srcinfo="${pkg_dir}/.SRCINFO"
 
@@ -82,6 +106,9 @@ awk \
     found_pkgver = 0
     found_sha_block = 0
   }
+  {
+    sub(/\r$/, "")
+  }
   /^pkgver=/ {
     print "pkgver=" version
     found_pkgver = 1
@@ -140,6 +167,9 @@ awk \
     found_source_wrapper = 0
     found_source_assets = 0
   }
+  {
+    sub(/\r$/, "")
+  }
   /^\tpkgver = / {
     print "\tpkgver = " version
     found_pkgver = 1

scripts/update-aur-package.test.ts

@@ -1,5 +1,6 @@
 import assert from 'node:assert/strict';
-import { execFileSync } from 'node:child_process';
+import { execFileSync, spawnSync } from 'node:child_process';
+import crypto from 'node:crypto';
 import fs from 'node:fs';
 import os from 'node:os';
 import path from 'node:path';
@@ -9,6 +10,23 @@ function createWorkspace(name: string): string {
   return fs.mkdtempSync(path.join(os.tmpdir(), `${name}-`));
 }
 
+function toBashPath(filePath: string): string {
+  if (process.platform !== 'win32') return filePath;
+
+  const normalized = filePath.replace(/\\/g, '/');
+  const match = normalized.match(/^([A-Za-z]):\/(.*)$/);
+  if (!match) return normalized;
+
+  const drive = match[1]!;
+  const rest = match[2]!;
+  const probe = spawnSync('bash', ['-c', 'uname -s'], { encoding: 'utf8' });
+  if (probe.status === 0 && /linux/i.test(probe.stdout)) {
+    return `/mnt/${drive.toLowerCase()}/${rest}`;
+  }
+
+  return `${drive.toUpperCase()}:/${rest}`;
+}
+
 test('update-aur-package updates PKGBUILD and .SRCINFO without makepkg', () => {
   const workspace = createWorkspace('subminer-aur-package');
   const pkgDir = path.join(workspace, 'aur-subminer-bin');
@@ -29,15 +47,15 @@ test('update-aur-package updates PKGBUILD and .SRCINFO without makepkg', () => {
       [
         'scripts/update-aur-package.sh',
         '--pkg-dir',
-        pkgDir,
+        toBashPath(pkgDir),
         '--version',
         'v0.6.3',
         '--appimage',
-        appImagePath,
+        toBashPath(appImagePath),
         '--wrapper',
-        wrapperPath,
+        toBashPath(wrapperPath),
         '--assets',
-        assetsPath,
+        toBashPath(assetsPath),
       ],
       {
         cwd: process.cwd(),
@@ -47,8 +65,8 @@ test('update-aur-package updates PKGBUILD and .SRCINFO without makepkg', () => {
 
     const pkgbuild = fs.readFileSync(path.join(pkgDir, 'PKGBUILD'), 'utf8');
     const srcinfo = fs.readFileSync(path.join(pkgDir, '.SRCINFO'), 'utf8');
-    const expectedSums = [appImagePath, wrapperPath, assetsPath].map(
-      (filePath) => execFileSync('sha256sum', [filePath], { encoding: 'utf8' }).split(/\s+/)[0],
+    const expectedSums = [appImagePath, wrapperPath, assetsPath].map((filePath) =>
+      crypto.createHash('sha256').update(fs.readFileSync(filePath)).digest('hex'),
     );
 
     assert.match(pkgbuild, /^pkgver=0\.6\.3$/m);

src/cli/args.test.ts

@@ -73,6 +73,33 @@ test('parseArgs captures youtube startup forwarding flags', () => {
   assert.equal(shouldStartApp(args), true);
 });
 
+test('parseArgs captures session action forwarding flags', () => {
+  const args = parseArgs([
+    '--open-jimaku',
+    '--open-youtube-picker',
+    '--open-playlist-browser',
+    '--replay-current-subtitle',
+    '--play-next-subtitle',
+    '--shift-sub-delay-prev-line',
+    '--shift-sub-delay-next-line',
+    '--copy-subtitle-count',
+    '3',
+    '--mine-sentence-count=2',
+  ]);
+
+  assert.equal(args.openJimaku, true);
+  assert.equal(args.openYoutubePicker, true);
+  assert.equal(args.openPlaylistBrowser, true);
+  assert.equal(args.replayCurrentSubtitle, true);
+  assert.equal(args.playNextSubtitle, true);
+  assert.equal(args.shiftSubDelayPrevLine, true);
+  assert.equal(args.shiftSubDelayNextLine, true);
+  assert.equal(args.copySubtitleCount, 3);
+  assert.equal(args.mineSentenceCount, 2);
+  assert.equal(hasExplicitCommand(args), true);
+  assert.equal(shouldStartApp(args), true);
+});
+
 test('youtube playback does not use generic overlay-runtime bootstrap classification', () => {
   const args = parseArgs(['--youtube-play', 'https://youtube.com/watch?v=abc']);
 

src/cli/args.ts

@@ -25,6 +25,15 @@ export interface CliArgs {
   triggerSubsync: boolean;
   markAudioCard: boolean;
   openRuntimeOptions: boolean;
+  openJimaku: boolean;
+  openYoutubePicker: boolean;
+  openPlaylistBrowser: boolean;
+  replayCurrentSubtitle: boolean;
+  playNextSubtitle: boolean;
+  shiftSubDelayPrevLine: boolean;
+  shiftSubDelayNextLine: boolean;
+  copySubtitleCount?: number;
+  mineSentenceCount?: number;
   anilistStatus: boolean;
   anilistLogout: boolean;
   anilistSetup: boolean;
@@ -103,6 +112,13 @@ export function parseArgs(argv: string[]): CliArgs {
     triggerSubsync: false,
     markAudioCard: false,
     openRuntimeOptions: false,
+    openJimaku: false,
+    openYoutubePicker: false,
+    openPlaylistBrowser: false,
+    replayCurrentSubtitle: false,
+    playNextSubtitle: false,
+    shiftSubDelayPrevLine: false,
+    shiftSubDelayNextLine: false,
     anilistStatus: false,
     anilistLogout: false,
     anilistSetup: false,
@@ -180,6 +196,26 @@ export function parseArgs(argv: string[]): CliArgs {
     else if (arg === '--trigger-subsync') args.triggerSubsync = true;
     else if (arg === '--mark-audio-card') args.markAudioCard = true;
     else if (arg === '--open-runtime-options') args.openRuntimeOptions = true;
+    else if (arg === '--open-jimaku') args.openJimaku = true;
+    else if (arg === '--open-youtube-picker') args.openYoutubePicker = true;
+    else if (arg === '--open-playlist-browser') args.openPlaylistBrowser = true;
+    else if (arg === '--replay-current-subtitle') args.replayCurrentSubtitle = true;
+    else if (arg === '--play-next-subtitle') args.playNextSubtitle = true;
+    else if (arg === '--shift-sub-delay-prev-line') args.shiftSubDelayPrevLine = true;
+    else if (arg === '--shift-sub-delay-next-line') args.shiftSubDelayNextLine = true;
+    else if (arg.startsWith('--copy-subtitle-count=')) {
+      const value = Number(arg.split('=', 2)[1]);
+      if (Number.isInteger(value)) args.copySubtitleCount = value;
+    } else if (arg === '--copy-subtitle-count') {
+      const value = Number(readValue(argv[i + 1]));
+      if (Number.isInteger(value)) args.copySubtitleCount = value;
+    } else if (arg.startsWith('--mine-sentence-count=')) {
+      const value = Number(arg.split('=', 2)[1]);
+      if (Number.isInteger(value)) args.mineSentenceCount = value;
+    } else if (arg === '--mine-sentence-count') {
+      const value = Number(readValue(argv[i + 1]));
+      if (Number.isInteger(value)) args.mineSentenceCount = value;
+    }
     else if (arg === '--anilist-status') args.anilistStatus = true;
     else if (arg === '--anilist-logout') args.anilistLogout = true;
     else if (arg === '--anilist-setup') args.anilistSetup = true;
@@ -372,6 +408,15 @@ export function hasExplicitCommand(args: CliArgs): boolean {
     args.triggerSubsync ||
     args.markAudioCard ||
     args.openRuntimeOptions ||
+    args.openJimaku ||
+    args.openYoutubePicker ||
+    args.openPlaylistBrowser ||
+    args.replayCurrentSubtitle ||
+    args.playNextSubtitle ||
+    args.shiftSubDelayPrevLine ||
+    args.shiftSubDelayNextLine ||
+    args.copySubtitleCount !== undefined ||
+    args.mineSentenceCount !== undefined ||
     args.anilistStatus ||
     args.anilistLogout ||
     args.anilistSetup ||
@@ -424,6 +469,15 @@ export function isStandaloneTexthookerCommand(args: CliArgs): boolean {
     !args.triggerSubsync &&
     !args.markAudioCard &&
     !args.openRuntimeOptions &&
+    !args.openJimaku &&
+    !args.openYoutubePicker &&
+    !args.openPlaylistBrowser &&
+    !args.replayCurrentSubtitle &&
+    !args.playNextSubtitle &&
+    !args.shiftSubDelayPrevLine &&
+    !args.shiftSubDelayNextLine &&
+    args.copySubtitleCount === undefined &&
+    args.mineSentenceCount === undefined &&
     !args.anilistStatus &&
     !args.anilistLogout &&
     !args.anilistSetup &&
@@ -467,6 +521,15 @@ export function shouldStartApp(args: CliArgs): boolean {
     args.triggerSubsync ||
     args.markAudioCard ||
     args.openRuntimeOptions ||
+    args.openJimaku ||
+    args.openYoutubePicker ||
+    args.openPlaylistBrowser ||
+    args.replayCurrentSubtitle ||
+    args.playNextSubtitle ||
+    args.shiftSubDelayPrevLine ||
+    args.shiftSubDelayNextLine ||
+    args.copySubtitleCount !== undefined ||
+    args.mineSentenceCount !== undefined ||
     args.dictionary ||
     args.stats ||
     args.jellyfin ||
@@ -505,6 +568,15 @@ export function shouldRunSettingsOnlyStartup(args: CliArgs): boolean {
     !args.triggerSubsync &&
     !args.markAudioCard &&
     !args.openRuntimeOptions &&
+    !args.openJimaku &&
+    !args.openYoutubePicker &&
+    !args.openPlaylistBrowser &&
+    !args.replayCurrentSubtitle &&
+    !args.playNextSubtitle &&
+    !args.shiftSubDelayPrevLine &&
+    !args.shiftSubDelayNextLine &&
+    args.copySubtitleCount === undefined &&
+    args.mineSentenceCount === undefined &&
     !args.anilistStatus &&
     !args.anilistLogout &&
     !args.anilistSetup &&
@@ -547,7 +619,16 @@ export function commandNeedsOverlayRuntime(args: CliArgs): boolean {
     args.triggerFieldGrouping ||
     args.triggerSubsync ||
     args.markAudioCard ||
-    args.openRuntimeOptions
+    args.openRuntimeOptions ||
+    args.openJimaku ||
+    args.openYoutubePicker ||
+    args.openPlaylistBrowser ||
+    args.replayCurrentSubtitle ||
+    args.playNextSubtitle ||
+    args.shiftSubDelayPrevLine ||
+    args.shiftSubDelayNextLine ||
+    args.copySubtitleCount !== undefined ||
+    args.mineSentenceCount !== undefined
   );
 }
 

src/core/services/app-lifecycle.test.ts

@@ -29,6 +29,13 @@ function makeArgs(overrides: Partial<CliArgs> = {}): CliArgs {
     triggerSubsync: false,
     markAudioCard: false,
     openRuntimeOptions: false,
+    openJimaku: false,
+    openYoutubePicker: false,
+    openPlaylistBrowser: false,
+    replayCurrentSubtitle: false,
+    playNextSubtitle: false,
+    shiftSubDelayPrevLine: false,
+    shiftSubDelayNextLine: false,
     anilistStatus: false,
     anilistLogout: false,
     anilistSetup: false,

src/core/services/cli-command.test.ts

@@ -31,6 +31,13 @@ function makeArgs(overrides: Partial<CliArgs> = {}): CliArgs {
     markAudioCard: false,
     refreshKnownWords: false,
     openRuntimeOptions: false,
+    openJimaku: false,
+    openYoutubePicker: false,
+    openPlaylistBrowser: false,
+    replayCurrentSubtitle: false,
+    playNextSubtitle: false,
+    shiftSubDelayPrevLine: false,
+    shiftSubDelayNextLine: false,
     anilistStatus: false,
     anilistLogout: false,
     anilistSetup: false,
@@ -143,6 +150,9 @@ function createDeps(overrides: Partial<CliCommandServiceDeps> = {}) {
     openRuntimeOptionsPalette: () => {
       calls.push('openRuntimeOptionsPalette');
     },
+    dispatchSessionAction: async () => {
+      calls.push('dispatchSessionAction');
+    },
     getAnilistStatus: () => ({
       tokenStatus: 'resolved',
       tokenSource: 'stored',

src/core/services/cli-command.ts

@@ -1,4 +1,5 @@
 import { CliArgs, CliCommandSource, commandNeedsOverlayRuntime } from '../../cli/args';
+import type { SessionActionDispatchRequest } from '../../types/runtime';
 
 export interface CliCommandServiceDeps {
   setLogLevel?: (level: NonNullable<CliArgs['logLevel']>) => void;
@@ -32,6 +33,7 @@ export interface CliCommandServiceDeps {
   triggerSubsyncFromConfig: () => Promise<void>;
   markLastCardAsAudioCard: () => Promise<void>;
   openRuntimeOptionsPalette: () => void;
+  dispatchSessionAction: (request: SessionActionDispatchRequest) => Promise<void>;
   getAnilistStatus: () => {
     tokenStatus: 'not_checked' | 'resolved' | 'error';
     tokenSource: 'none' | 'literal' | 'stored';
@@ -168,6 +170,7 @@ export interface CliCommandDepsRuntimeOptions {
   };
   ui: UiCliRuntime;
   app: AppCliRuntime;
+  dispatchSessionAction: (request: SessionActionDispatchRequest) => Promise<void>;
   getMultiCopyTimeoutMs: () => number;
   schedule: (fn: () => void, delayMs: number) => unknown;
   log: (message: string) => void;
@@ -226,6 +229,7 @@ export function createCliCommandDepsRuntime(
     triggerSubsyncFromConfig: options.mining.triggerSubsyncFromConfig,
     markLastCardAsAudioCard: options.mining.markLastCardAsAudioCard,
     openRuntimeOptionsPalette: options.ui.openRuntimeOptionsPalette,
+    dispatchSessionAction: options.dispatchSessionAction,
     getAnilistStatus: options.anilist.getStatus,
     clearAnilistToken: options.anilist.clearToken,
     openAnilistSetup: options.anilist.openSetup,
@@ -268,6 +272,19 @@ export function handleCliCommand(
   source: CliCommandSource = 'initial',
   deps: CliCommandServiceDeps,
 ): void {
+  const dispatchCliSessionAction = (
+    request: SessionActionDispatchRequest,
+    logLabel: string,
+    osdLabel: string,
+  ): void => {
+    runAsyncWithOsd(
+      () => deps.dispatchSessionAction?.(request) ?? Promise.resolve(),
+      deps,
+      logLabel,
+      osdLabel,
+    );
+  };
+
   if (args.logLevel) {
     deps.setLogLevel?.(args.logLevel);
   }
@@ -381,6 +398,56 @@ export function handleCliCommand(
     );
   } else if (args.openRuntimeOptions) {
     deps.openRuntimeOptionsPalette();
+  } else if (args.openJimaku) {
+    dispatchCliSessionAction({ actionId: 'openJimaku' }, 'openJimaku', 'Open jimaku failed');
+  } else if (args.openYoutubePicker) {
+    dispatchCliSessionAction(
+      { actionId: 'openYoutubePicker' },
+      'openYoutubePicker',
+      'Open YouTube picker failed',
+    );
+  } else if (args.openPlaylistBrowser) {
+    dispatchCliSessionAction(
+      { actionId: 'openPlaylistBrowser' },
+      'openPlaylistBrowser',
+      'Open playlist browser failed',
+    );
+  } else if (args.replayCurrentSubtitle) {
+    dispatchCliSessionAction(
+      { actionId: 'replayCurrentSubtitle' },
+      'replayCurrentSubtitle',
+      'Replay subtitle failed',
+    );
+  } else if (args.playNextSubtitle) {
+    dispatchCliSessionAction(
+      { actionId: 'playNextSubtitle' },
+      'playNextSubtitle',
+      'Play next subtitle failed',
+    );
+  } else if (args.shiftSubDelayPrevLine) {
+    dispatchCliSessionAction(
+      { actionId: 'shiftSubDelayPrevLine' },
+      'shiftSubDelayPrevLine',
+      'Shift subtitle delay failed',
+    );
+  } else if (args.shiftSubDelayNextLine) {
+    dispatchCliSessionAction(
+      { actionId: 'shiftSubDelayNextLine' },
+      'shiftSubDelayNextLine',
+      'Shift subtitle delay failed',
+    );
+  } else if (args.copySubtitleCount !== undefined) {
+    dispatchCliSessionAction(
+      { actionId: 'copySubtitleMultiple', payload: { count: args.copySubtitleCount } },
+      'copySubtitleMultiple',
+      'Copy failed',
+    );
+  } else if (args.mineSentenceCount !== undefined) {
+    dispatchCliSessionAction(
+      { actionId: 'mineSentenceMultiple', payload: { count: args.mineSentenceCount } },
+      'mineSentenceMultiple',
+      'Mine sentence failed',
+    );
   } else if (args.anilistStatus) {
     const status = deps.getAnilistStatus();
     deps.log(`AniList token status: ${status.tokenStatus} (source=${status.tokenSource})`);

src/core/services/ipc.test.ts

@@ -127,7 +127,9 @@ function createRegisterIpcDeps(overrides: Partial<IpcServiceDeps> = {}): IpcServ
     setMecabEnabled: () => {},
     handleMpvCommand: () => {},
     getKeybindings: () => [],
+    getSessionBindings: () => [],
     getConfiguredShortcuts: () => ({}),
+    dispatchSessionAction: async () => {},
     getStatsToggleKey: () => 'Backquote',
     getMarkWatchedKey: () => 'KeyW',
     getControllerConfig: () => createControllerConfigFixture(),
@@ -226,7 +228,9 @@ test('createIpcDepsRuntime wires AniList handlers', async () => {
     getMecabTokenizer: () => null,
     handleMpvCommand: () => {},
     getKeybindings: () => [],
+    getSessionBindings: () => [],
     getConfiguredShortcuts: () => ({}),
+    dispatchSessionAction: async () => {},
     getStatsToggleKey: () => 'Backquote',
     getMarkWatchedKey: () => 'KeyW',
     getControllerConfig: () => createControllerConfigFixture(),
@@ -382,7 +386,9 @@ test('registerIpcHandlers rejects malformed runtime-option payloads', async () =
       setMecabEnabled: () => {},
       handleMpvCommand: () => {},
       getKeybindings: () => [],
+      getSessionBindings: () => [],
       getConfiguredShortcuts: () => ({}),
+      dispatchSessionAction: async () => {},
       getStatsToggleKey: () => 'Backquote',
       getMarkWatchedKey: () => 'KeyW',
       getControllerConfig: () => createControllerConfigFixture(),
@@ -707,7 +713,9 @@ test('registerIpcHandlers ignores malformed fire-and-forget payloads', () => {
       setMecabEnabled: () => {},
       handleMpvCommand: () => {},
       getKeybindings: () => [],
+      getSessionBindings: () => [],
       getConfiguredShortcuts: () => ({}),
+      dispatchSessionAction: async () => {},
       getStatsToggleKey: () => 'Backquote',
       getMarkWatchedKey: () => 'KeyW',
       getControllerConfig: () => createControllerConfigFixture(),
@@ -786,7 +794,9 @@ test('registerIpcHandlers awaits saveControllerPreference through request-respon
       setMecabEnabled: () => {},
       handleMpvCommand: () => {},
       getKeybindings: () => [],
+      getSessionBindings: () => [],
       getConfiguredShortcuts: () => ({}),
+      dispatchSessionAction: async () => {},
       getStatsToggleKey: () => 'Backquote',
       getMarkWatchedKey: () => 'KeyW',
       getControllerConfig: () => createControllerConfigFixture(),
@@ -872,7 +882,9 @@ test('registerIpcHandlers rejects malformed controller preference payloads', asy
       setMecabEnabled: () => {},
       handleMpvCommand: () => {},
       getKeybindings: () => [],
+      getSessionBindings: () => [],
       getConfiguredShortcuts: () => ({}),
+      dispatchSessionAction: async () => {},
       getStatsToggleKey: () => 'Backquote',
       getMarkWatchedKey: () => 'KeyW',
       getControllerConfig: () => createControllerConfigFixture(),

src/core/services/ipc.ts

@@ -1,6 +1,7 @@
 import electron from 'electron';
-import type { IpcMainEvent } from 'electron';
+import type { BrowserWindow as ElectronBrowserWindow, IpcMainEvent } from 'electron';
 import type {
+  CompiledSessionBinding,
   ControllerConfigUpdate,
   PlaylistBrowserMutationResult,
   PlaylistBrowserSnapshot,
@@ -12,6 +13,7 @@ import type {
   SubtitlePosition,
   SubsyncManualRunRequest,
   SubsyncResult,
+  SessionActionDispatchRequest,
   YoutubePickerResolveRequest,
   YoutubePickerResolveResult,
 } from '../../types';
@@ -30,11 +32,14 @@ import {
   parseYoutubePickerResolveRequest,
 } from '../../shared/ipc/validators';
 
-const { BrowserWindow, ipcMain } = electron;
+const { ipcMain } = electron;
 
 export interface IpcServiceDeps {
   onOverlayModalClosed: (modal: OverlayHostedModal) => void;
-  onOverlayModalOpened?: (modal: OverlayHostedModal) => void;
+  onOverlayModalOpened?: (
+    modal: OverlayHostedModal,
+    senderWindow: ElectronBrowserWindow | null,
+  ) => void;
   openYomitanSettings: () => void;
   quitApp: () => void;
   toggleDevTools: () => void;
@@ -56,7 +61,9 @@ export interface IpcServiceDeps {
   setMecabEnabled: (enabled: boolean) => void;
   handleMpvCommand: (command: Array<string | number>) => void;
   getKeybindings: () => unknown;
+  getSessionBindings?: () => CompiledSessionBinding[];
   getConfiguredShortcuts: () => unknown;
+  dispatchSessionAction?: (request: SessionActionDispatchRequest) => void | Promise<void>;
   getStatsToggleKey: () => string;
   getMarkWatchedKey: () => string;
   getControllerConfig: () => ResolvedControllerConfig;
@@ -154,7 +161,10 @@ export interface IpcDepsRuntimeOptions {
   getMainWindow: () => WindowLike | null;
   getVisibleOverlayVisibility: () => boolean;
   onOverlayModalClosed: (modal: OverlayHostedModal) => void;
-  onOverlayModalOpened?: (modal: OverlayHostedModal) => void;
+  onOverlayModalOpened?: (
+    modal: OverlayHostedModal,
+    senderWindow: ElectronBrowserWindow | null,
+  ) => void;
   openYomitanSettings: () => void;
   quitApp: () => void;
   toggleVisibleOverlay: () => void;
@@ -169,7 +179,9 @@ export interface IpcDepsRuntimeOptions {
   getMecabTokenizer: () => MecabTokenizerLike | null;
   handleMpvCommand: (command: Array<string | number>) => void;
   getKeybindings: () => unknown;
+  getSessionBindings?: () => CompiledSessionBinding[];
   getConfiguredShortcuts: () => unknown;
+  dispatchSessionAction?: (request: SessionActionDispatchRequest) => void | Promise<void>;
   getStatsToggleKey: () => string;
   getMarkWatchedKey: () => string;
   getControllerConfig: () => ResolvedControllerConfig;
@@ -238,7 +250,9 @@ export function createIpcDepsRuntime(options: IpcDepsRuntimeOptions): IpcService
     },
     handleMpvCommand: options.handleMpvCommand,
     getKeybindings: options.getKeybindings,
+    getSessionBindings: options.getSessionBindings ?? (() => []),
     getConfiguredShortcuts: options.getConfiguredShortcuts,
+    dispatchSessionAction: options.dispatchSessionAction ?? (async () => {}),
     getStatsToggleKey: options.getStatsToggleKey,
     getMarkWatchedKey: options.getMarkWatchedKey,
     getControllerConfig: options.getControllerConfig,
@@ -299,7 +313,8 @@ export function registerIpcHandlers(deps: IpcServiceDeps, ipc: IpcMainRegistrar
     (event: unknown, ignore: unknown, options: unknown = {}) => {
       if (typeof ignore !== 'boolean') return;
       const parsedOptions = parseOptionalForwardingOptions(options);
-      const senderWindow = BrowserWindow.fromWebContents((event as IpcMainEvent).sender);
+      const senderWindow =
+        electron.BrowserWindow?.fromWebContents((event as IpcMainEvent).sender) ?? null;
       if (senderWindow && !senderWindow.isDestroyed()) {
         senderWindow.setIgnoreMouseEvents(ignore, parsedOptions);
       }
@@ -311,11 +326,13 @@ export function registerIpcHandlers(deps: IpcServiceDeps, ipc: IpcMainRegistrar
     if (!parsedModal) return;
     deps.onOverlayModalClosed(parsedModal);
   });
-  ipc.on(IPC_CHANNELS.command.overlayModalOpened, (_event: unknown, modal: unknown) => {
+  ipc.on(IPC_CHANNELS.command.overlayModalOpened, (event: unknown, modal: unknown) => {
     const parsedModal = parseOverlayHostedModal(modal);
     if (!parsedModal) return;
     if (!deps.onOverlayModalOpened) return;
-    deps.onOverlayModalOpened(parsedModal);
+    const senderWindow =
+      electron.BrowserWindow?.fromWebContents((event as IpcMainEvent).sender) ?? null;
+    deps.onOverlayModalOpened(parsedModal, senderWindow);
   });
 
   ipc.handle(
@@ -431,10 +448,36 @@ export function registerIpcHandlers(deps: IpcServiceDeps, ipc: IpcMainRegistrar
     deps.handleMpvCommand(parsedCommand);
   });
 
+  ipc.handle(
+    IPC_CHANNELS.command.dispatchSessionAction,
+    async (_event: unknown, request: unknown) => {
+      if (!request || typeof request !== 'object') {
+        throw new Error('Invalid session action payload');
+      }
+      const actionId =
+        typeof (request as Record<string, unknown>).actionId === 'string'
+          ? ((request as Record<string, unknown>).actionId as SessionActionDispatchRequest['actionId'])
+          : null;
+      if (!actionId) {
+        throw new Error('Invalid session action id');
+      }
+      const payload =
+        (request as Record<string, unknown>).payload &&
+        typeof (request as Record<string, unknown>).payload === 'object'
+          ? ((request as Record<string, unknown>).payload as SessionActionDispatchRequest['payload'])
+          : undefined;
+      await deps.dispatchSessionAction?.({ actionId, payload });
+    },
+  );
+
   ipc.handle(IPC_CHANNELS.request.getKeybindings, () => {
     return deps.getKeybindings();
   });
 
+  ipc.handle(IPC_CHANNELS.request.getSessionBindings, () => {
+    return deps.getSessionBindings?.() ?? [];
+  });
+
   ipc.handle(IPC_CHANNELS.request.getConfigShortcuts, () => {
     return deps.getConfiguredShortcuts();
   });

src/core/services/overlay-runtime-init.test.ts

@@ -2,23 +2,6 @@ import assert from 'node:assert/strict';
 import test from 'node:test';
 import { initializeOverlayAnkiIntegration, initializeOverlayRuntime } from './overlay-runtime-init';
 
-function withPlatform(platform: NodeJS.Platform, run: () => void): void {
-  const originalPlatform = process.platform;
-  Object.defineProperty(process, 'platform', {
-    value: platform,
-    configurable: true,
-  });
-
-  try {
-    run();
-  } finally {
-    Object.defineProperty(process, 'platform', {
-      value: originalPlatform,
-      configurable: true,
-    });
-  }
-}
-
 test('initializeOverlayRuntime skips Anki integration when ankiConnect.enabled is false', () => {
   let createdIntegrations = 0;
   let startedIntegrations = 0;
@@ -564,62 +547,60 @@ test('initializeOverlayRuntime hides overlay windows when tracker loses the targ
   assert.deepEqual(calls, ['hide-visible', 'hide-modal', 'sync-shortcuts']);
 });
 
-test('initializeOverlayRuntime preserves visible overlay on Windows tracker loss when target is not minimized', () => {
-  withPlatform('win32', () => {
-    const calls: string[] = [];
-    const tracker = {
-      onGeometryChange: null as ((...args: unknown[]) => void) | null,
-      onWindowFound: null as ((...args: unknown[]) => void) | null,
-      onWindowLost: null as (() => void) | null,
-      onWindowFocusChange: null as ((focused: boolean) => void) | null,
-      isTargetWindowMinimized: () => false,
-      start: () => {},
-    };
-    const overlayWindows = [
-      {
-        hide: () => calls.push('hide-visible'),
-      },
-    ];
+test('initializeOverlayRuntime hides visible overlay on Windows tracker loss when target is not minimized', () => {
+  const calls: string[] = [];
+  const tracker = {
+    onGeometryChange: null as ((...args: unknown[]) => void) | null,
+    onWindowFound: null as ((...args: unknown[]) => void) | null,
+    onWindowLost: null as (() => void) | null,
+    onWindowFocusChange: null as ((focused: boolean) => void) | null,
+    isTargetWindowMinimized: () => false,
+    start: () => {},
+  };
+  const overlayWindows = [
+    {
+      hide: () => calls.push('hide-visible'),
+    },
+  ];
 
-    initializeOverlayRuntime({
-      backendOverride: null,
-      createMainWindow: () => {},
-      registerGlobalShortcuts: () => {},
-      updateVisibleOverlayBounds: () => {},
-      isVisibleOverlayVisible: () => true,
-      updateVisibleOverlayVisibility: () => {
-        calls.push('update-visible');
-      },
-      refreshCurrentSubtitle: () => {},
-      getOverlayWindows: () => overlayWindows as never,
-      syncOverlayShortcuts: () => {
-        calls.push('sync-shortcuts');
-      },
-      setWindowTracker: () => {},
-      getMpvSocketPath: () => '/tmp/mpv.sock',
-      createWindowTracker: () => tracker as never,
-      getResolvedConfig: () => ({
-        ankiConnect: { enabled: false } as never,
-      }),
-      getSubtitleTimingTracker: () => null,
-      getMpvClient: () => null,
-      getRuntimeOptionsManager: () => null,
-      setAnkiIntegration: () => {},
-      showDesktopNotification: () => {},
-      createFieldGroupingCallback: () => async () => ({
-        keepNoteId: 1,
-        deleteNoteId: 2,
-        deleteDuplicate: false,
-        cancelled: false,
-      }),
-      getKnownWordCacheStatePath: () => '/tmp/known-words-cache.json',
-    });
-
-    calls.length = 0;
-    tracker.onWindowLost?.();
-
-    assert.deepEqual(calls, ['sync-shortcuts']);
+  initializeOverlayRuntime({
+    backendOverride: null,
+    createMainWindow: () => {},
+    registerGlobalShortcuts: () => {},
+    updateVisibleOverlayBounds: () => {},
+    isVisibleOverlayVisible: () => true,
+    updateVisibleOverlayVisibility: () => {
+      calls.push('update-visible');
+    },
+    refreshCurrentSubtitle: () => {},
+    getOverlayWindows: () => overlayWindows as never,
+    syncOverlayShortcuts: () => {
+      calls.push('sync-shortcuts');
+    },
+    setWindowTracker: () => {},
+    getMpvSocketPath: () => '/tmp/mpv.sock',
+    createWindowTracker: () => tracker as never,
+    getResolvedConfig: () => ({
+      ankiConnect: { enabled: false } as never,
+    }),
+    getSubtitleTimingTracker: () => null,
+    getMpvClient: () => null,
+    getRuntimeOptionsManager: () => null,
+    setAnkiIntegration: () => {},
+    showDesktopNotification: () => {},
+    createFieldGroupingCallback: () => async () => ({
+      keepNoteId: 1,
+      deleteNoteId: 2,
+      deleteDuplicate: false,
+      cancelled: false,
+    }),
+    getKnownWordCacheStatePath: () => '/tmp/known-words-cache.json',
   });
+
+  calls.length = 0;
+  tracker.onWindowLost?.();
+
+  assert.deepEqual(calls, ['hide-visible', 'sync-shortcuts']);
 });
 
 test('initializeOverlayRuntime restores overlay bounds and visibility when tracker finds the target window again', () => {

src/core/services/overlay-runtime-init.ts

@@ -105,15 +105,6 @@ export function initializeOverlayRuntime(options: {
     };
     windowTracker.onWindowLost = () => {
       options.releaseOverlayOwner?.();
-      if (
-        process.platform === 'win32' &&
-        typeof windowTracker.isTargetWindowMinimized === 'function' &&
-        !windowTracker.isTargetWindowMinimized()
-      ) {
-        options.syncOverlayShortcuts();
-        return;
-      }
-
       for (const window of options.getOverlayWindows()) {
         window.hide();
       }

src/core/services/overlay-shortcut-handler.test.ts

@@ -6,7 +6,11 @@ import {
   OverlayShortcutRuntimeDeps,
   runOverlayShortcutLocalFallback,
 } from './overlay-shortcut-handler';
-import { shouldActivateOverlayShortcuts } from './overlay-shortcut';
+import {
+  registerOverlayShortcutsRuntime,
+  shouldActivateOverlayShortcuts,
+  unregisterOverlayShortcutsRuntime,
+} from './overlay-shortcut';
 
 function makeShortcuts(overrides: Partial<ConfiguredShortcuts> = {}): ConfiguredShortcuts {
   return {
@@ -313,3 +317,85 @@ test('shouldActivateOverlayShortcuts preserves non-macOS behavior', () => {
     true,
   );
 });
+
+test('registerOverlayShortcutsRuntime reports active shortcuts when configured', () => {
+  const result = registerOverlayShortcutsRuntime({
+    getConfiguredShortcuts: () =>
+      ({
+        toggleVisibleOverlayGlobal: null,
+        copySubtitle: null,
+        copySubtitleMultiple: null,
+        updateLastCardFromClipboard: null,
+        triggerFieldGrouping: null,
+        triggerSubsync: null,
+        mineSentence: null,
+        mineSentenceMultiple: null,
+        multiCopyTimeoutMs: 2500,
+        toggleSecondarySub: null,
+        markAudioCard: null,
+        openRuntimeOptions: null,
+        openJimaku: 'Ctrl+J',
+      }) as never,
+    getOverlayHandlers: () => ({
+      copySubtitle: () => {},
+      copySubtitleMultiple: () => {},
+      updateLastCardFromClipboard: () => {},
+      triggerFieldGrouping: () => {},
+      triggerSubsync: () => {},
+      mineSentence: () => {},
+      mineSentenceMultiple: () => {},
+      toggleSecondarySub: () => {},
+      markAudioCard: () => {},
+      openRuntimeOptions: () => {},
+      openJimaku: () => {},
+    }),
+    cancelPendingMultiCopy: () => {},
+    cancelPendingMineSentenceMultiple: () => {},
+  });
+
+  assert.equal(result, true);
+});
+
+test('unregisterOverlayShortcutsRuntime clears pending shortcut work when active', () => {
+  const calls: string[] = [];
+  const result = unregisterOverlayShortcutsRuntime(true, {
+    getConfiguredShortcuts: () =>
+      ({
+        toggleVisibleOverlayGlobal: null,
+        copySubtitle: null,
+        copySubtitleMultiple: null,
+        updateLastCardFromClipboard: null,
+        triggerFieldGrouping: null,
+        triggerSubsync: null,
+        mineSentence: null,
+        mineSentenceMultiple: null,
+        multiCopyTimeoutMs: 2500,
+        toggleSecondarySub: null,
+        markAudioCard: null,
+        openRuntimeOptions: null,
+        openJimaku: null,
+      }) as never,
+    getOverlayHandlers: () => ({
+      copySubtitle: () => {},
+      copySubtitleMultiple: () => {},
+      updateLastCardFromClipboard: () => {},
+      triggerFieldGrouping: () => {},
+      triggerSubsync: () => {},
+      mineSentence: () => {},
+      mineSentenceMultiple: () => {},
+      toggleSecondarySub: () => {},
+      markAudioCard: () => {},
+      openRuntimeOptions: () => {},
+      openJimaku: () => {},
+    }),
+    cancelPendingMultiCopy: () => {
+      calls.push('cancel-multi-copy');
+    },
+    cancelPendingMineSentenceMultiple: () => {
+      calls.push('cancel-mine-sentence-multiple');
+    },
+  });
+
+  assert.equal(result, false);
+  assert.deepEqual(calls, ['cancel-multi-copy', 'cancel-mine-sentence-multiple']);
+});

src/core/services/overlay-shortcut.test.ts

@@ -0,0 +1,94 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { ConfiguredShortcuts } from '../utils/shortcut-config';
+import {
+  registerOverlayShortcuts,
+  syncOverlayShortcutsRuntime,
+  unregisterOverlayShortcutsRuntime,
+} from './overlay-shortcut';
+
+function createShortcuts(overrides: Partial<ConfiguredShortcuts> = {}): ConfiguredShortcuts {
+  return {
+    toggleVisibleOverlayGlobal: null,
+    copySubtitle: null,
+    copySubtitleMultiple: null,
+    updateLastCardFromClipboard: null,
+    triggerFieldGrouping: null,
+    triggerSubsync: null,
+    mineSentence: null,
+    mineSentenceMultiple: null,
+    multiCopyTimeoutMs: 2500,
+    toggleSecondarySub: null,
+    markAudioCard: null,
+    openRuntimeOptions: null,
+    openJimaku: null,
+    ...overrides,
+  };
+}
+
+test('registerOverlayShortcuts reports active overlay shortcuts when configured', () => {
+  assert.equal(
+    registerOverlayShortcuts(createShortcuts({ openJimaku: 'Ctrl+J' }), {
+      copySubtitle: () => {},
+      copySubtitleMultiple: () => {},
+      updateLastCardFromClipboard: () => {},
+      triggerFieldGrouping: () => {},
+      triggerSubsync: () => {},
+      mineSentence: () => {},
+      mineSentenceMultiple: () => {},
+      toggleSecondarySub: () => {},
+      markAudioCard: () => {},
+      openRuntimeOptions: () => {},
+      openJimaku: () => {},
+    }),
+    true,
+  );
+});
+
+test('registerOverlayShortcuts stays inactive when overlay shortcuts are absent', () => {
+  assert.equal(
+    registerOverlayShortcuts(createShortcuts(), {
+      copySubtitle: () => {},
+      copySubtitleMultiple: () => {},
+      updateLastCardFromClipboard: () => {},
+      triggerFieldGrouping: () => {},
+      triggerSubsync: () => {},
+      mineSentence: () => {},
+      mineSentenceMultiple: () => {},
+      toggleSecondarySub: () => {},
+      markAudioCard: () => {},
+      openRuntimeOptions: () => {},
+      openJimaku: () => {},
+    }),
+    false,
+  );
+});
+
+test('syncOverlayShortcutsRuntime deactivates cleanly when shortcuts were active', () => {
+  const calls: string[] = [];
+  const result = syncOverlayShortcutsRuntime(false, true, {
+    getConfiguredShortcuts: () => createShortcuts(),
+    getOverlayHandlers: () => ({
+      copySubtitle: () => {},
+      copySubtitleMultiple: () => {},
+      updateLastCardFromClipboard: () => {},
+      triggerFieldGrouping: () => {},
+      triggerSubsync: () => {},
+      mineSentence: () => {},
+      mineSentenceMultiple: () => {},
+      toggleSecondarySub: () => {},
+      markAudioCard: () => {},
+      openRuntimeOptions: () => {},
+      openJimaku: () => {},
+    }),
+    cancelPendingMultiCopy: () => {
+      calls.push('cancel-multi-copy');
+    },
+    cancelPendingMineSentenceMultiple: () => {
+      calls.push('cancel-mine-sentence-multiple');
+    },
+  });
+
+  assert.equal(result, false);
+  assert.deepEqual(calls, ['cancel-multi-copy', 'cancel-mine-sentence-multiple']);
+});

src/core/services/overlay-shortcut.ts

@@ -1,10 +1,4 @@
-import electron from 'electron';
 import { ConfiguredShortcuts } from '../utils/shortcut-config';
-import { isGlobalShortcutRegisteredSafe } from './shortcut-fallback';
-import { createLogger } from '../../logger';
-
-const { globalShortcut } = electron;
-const logger = createLogger('main:overlay-shortcut-service');
 
 export interface OverlayShortcutHandlers {
   copySubtitle: () => void;
@@ -27,6 +21,27 @@ export interface OverlayShortcutLifecycleDeps {
   cancelPendingMineSentenceMultiple: () => void;
 }
 
+const OVERLAY_SHORTCUT_KEYS: Array<keyof Omit<ConfiguredShortcuts, 'multiCopyTimeoutMs'>> = [
+  'copySubtitle',
+  'copySubtitleMultiple',
+  'updateLastCardFromClipboard',
+  'triggerFieldGrouping',
+  'triggerSubsync',
+  'mineSentence',
+  'mineSentenceMultiple',
+  'toggleSecondarySub',
+  'markAudioCard',
+  'openRuntimeOptions',
+  'openJimaku',
+];
+
+function hasConfiguredOverlayShortcuts(shortcuts: ConfiguredShortcuts): boolean {
+  return OVERLAY_SHORTCUT_KEYS.some((key) => {
+    const shortcut = shortcuts[key];
+    return typeof shortcut === 'string' && shortcut.trim().length > 0;
+  });
+}
+
 export function shouldActivateOverlayShortcuts(args: {
   overlayRuntimeInitialized: boolean;
   isMacOSPlatform: boolean;
@@ -43,139 +58,12 @@ export function shouldActivateOverlayShortcuts(args: {
 
 export function registerOverlayShortcuts(
   shortcuts: ConfiguredShortcuts,
-  handlers: OverlayShortcutHandlers,
+  _handlers: OverlayShortcutHandlers,
 ): boolean {
-  let registeredAny = false;
-  const registerOverlayShortcut = (
-    accelerator: string,
-    handler: () => void,
-    label: string,
-  ): void => {
-    if (isGlobalShortcutRegisteredSafe(accelerator)) {
-      registeredAny = true;
-      return;
-    }
-    const ok = globalShortcut.register(accelerator, handler);
-    if (!ok) {
-      logger.warn(`Failed to register overlay shortcut ${label}: ${accelerator}`);
-      return;
-    }
-    registeredAny = true;
-  };
-
-  if (shortcuts.copySubtitleMultiple) {
-    registerOverlayShortcut(
-      shortcuts.copySubtitleMultiple,
-      () => handlers.copySubtitleMultiple(shortcuts.multiCopyTimeoutMs),
-      'copySubtitleMultiple',
-    );
-  }
-
-  if (shortcuts.copySubtitle) {
-    registerOverlayShortcut(shortcuts.copySubtitle, () => handlers.copySubtitle(), 'copySubtitle');
-  }
-
-  if (shortcuts.triggerFieldGrouping) {
-    registerOverlayShortcut(
-      shortcuts.triggerFieldGrouping,
-      () => handlers.triggerFieldGrouping(),
-      'triggerFieldGrouping',
-    );
-  }
-
-  if (shortcuts.triggerSubsync) {
-    registerOverlayShortcut(
-      shortcuts.triggerSubsync,
-      () => handlers.triggerSubsync(),
-      'triggerSubsync',
-    );
-  }
-
-  if (shortcuts.mineSentence) {
-    registerOverlayShortcut(shortcuts.mineSentence, () => handlers.mineSentence(), 'mineSentence');
-  }
-
-  if (shortcuts.mineSentenceMultiple) {
-    registerOverlayShortcut(
-      shortcuts.mineSentenceMultiple,
-      () => handlers.mineSentenceMultiple(shortcuts.multiCopyTimeoutMs),
-      'mineSentenceMultiple',
-    );
-  }
-
-  if (shortcuts.toggleSecondarySub) {
-    registerOverlayShortcut(
-      shortcuts.toggleSecondarySub,
-      () => handlers.toggleSecondarySub(),
-      'toggleSecondarySub',
-    );
-  }
-
-  if (shortcuts.updateLastCardFromClipboard) {
-    registerOverlayShortcut(
-      shortcuts.updateLastCardFromClipboard,
-      () => handlers.updateLastCardFromClipboard(),
-      'updateLastCardFromClipboard',
-    );
-  }
-
-  if (shortcuts.markAudioCard) {
-    registerOverlayShortcut(
-      shortcuts.markAudioCard,
-      () => handlers.markAudioCard(),
-      'markAudioCard',
-    );
-  }
-
-  if (shortcuts.openRuntimeOptions) {
-    registerOverlayShortcut(
-      shortcuts.openRuntimeOptions,
-      () => handlers.openRuntimeOptions(),
-      'openRuntimeOptions',
-    );
-  }
-  if (shortcuts.openJimaku) {
-    registerOverlayShortcut(shortcuts.openJimaku, () => handlers.openJimaku(), 'openJimaku');
-  }
-
-  return registeredAny;
+  return hasConfiguredOverlayShortcuts(shortcuts);
 }
 
-export function unregisterOverlayShortcuts(shortcuts: ConfiguredShortcuts): void {
-  if (shortcuts.copySubtitle) {
-    globalShortcut.unregister(shortcuts.copySubtitle);
-  }
-  if (shortcuts.copySubtitleMultiple) {
-    globalShortcut.unregister(shortcuts.copySubtitleMultiple);
-  }
-  if (shortcuts.updateLastCardFromClipboard) {
-    globalShortcut.unregister(shortcuts.updateLastCardFromClipboard);
-  }
-  if (shortcuts.triggerFieldGrouping) {
-    globalShortcut.unregister(shortcuts.triggerFieldGrouping);
-  }
-  if (shortcuts.triggerSubsync) {
-    globalShortcut.unregister(shortcuts.triggerSubsync);
-  }
-  if (shortcuts.mineSentence) {
-    globalShortcut.unregister(shortcuts.mineSentence);
-  }
-  if (shortcuts.mineSentenceMultiple) {
-    globalShortcut.unregister(shortcuts.mineSentenceMultiple);
-  }
-  if (shortcuts.toggleSecondarySub) {
-    globalShortcut.unregister(shortcuts.toggleSecondarySub);
-  }
-  if (shortcuts.markAudioCard) {
-    globalShortcut.unregister(shortcuts.markAudioCard);
-  }
-  if (shortcuts.openRuntimeOptions) {
-    globalShortcut.unregister(shortcuts.openRuntimeOptions);
-  }
-  if (shortcuts.openJimaku) {
-    globalShortcut.unregister(shortcuts.openJimaku);
-  }
-}
+export function unregisterOverlayShortcuts(_shortcuts: ConfiguredShortcuts): void {}
 
 export function registerOverlayShortcutsRuntime(deps: OverlayShortcutLifecycleDeps): boolean {
   return registerOverlayShortcuts(deps.getConfiguredShortcuts(), deps.getOverlayHandlers());

src/core/services/overlay-window-config.test.ts

@@ -14,7 +14,7 @@ test('overlay window config explicitly disables renderer sandbox for preload com
 });
 
 test('Windows visible overlay window config does not start as always-on-top', () => {
-  const originalPlatform = process.platform;
+  const originalPlatformDescriptor = Object.getOwnPropertyDescriptor(process, 'platform');
 
   Object.defineProperty(process, 'platform', {
     configurable: true,
@@ -29,10 +29,9 @@ test('Windows visible overlay window config does not start as always-on-top', ()
 
     assert.equal(options.alwaysOnTop, false);
   } finally {
-    Object.defineProperty(process, 'platform', {
-      configurable: true,
-      value: originalPlatform,
-    });
+    if (originalPlatformDescriptor) {
+      Object.defineProperty(process, 'platform', originalPlatformDescriptor);
+    }
   }
 });
 

src/core/services/overlay-window.ts

@@ -17,6 +17,9 @@ const overlayWindowContentReady = new WeakSet<BrowserWindow>();
 const OVERLAY_WINDOW_CONTENT_READY_FLAG = '__subminerOverlayContentReady';
 
 export function isOverlayWindowContentReady(window: BrowserWindow): boolean {
+  if (window.isDestroyed()) {
+    return false;
+  }
   return (
     overlayWindowContentReady.has(window) ||
     (window as BrowserWindow & { [OVERLAY_WINDOW_CONTENT_READY_FLAG]?: boolean })[

src/core/services/session-actions.ts

@@ -0,0 +1,109 @@
+import type { RuntimeOptionApplyResult, RuntimeOptionId } from '../../types';
+import type { SessionActionId } from '../../types/session-bindings';
+import type { SessionActionDispatchRequest } from '../../types/runtime';
+
+export interface SessionActionExecutorDeps {
+  toggleStatsOverlay: () => void;
+  toggleVisibleOverlay: () => void;
+  copyCurrentSubtitle: () => void;
+  copySubtitleCount: (count: number) => void;
+  updateLastCardFromClipboard: () => Promise<void>;
+  triggerFieldGrouping: () => Promise<void>;
+  triggerSubsyncFromConfig: () => Promise<void>;
+  mineSentenceCard: () => Promise<void>;
+  mineSentenceCount: (count: number) => void;
+  toggleSecondarySub: () => void;
+  markLastCardAsAudioCard: () => Promise<void>;
+  openRuntimeOptionsPalette: () => void;
+  openJimaku: () => void;
+  openYoutubeTrackPicker: () => void | Promise<void>;
+  openPlaylistBrowser: () => boolean | void | Promise<boolean | void>;
+  replayCurrentSubtitle: () => void;
+  playNextSubtitle: () => void;
+  shiftSubDelayToAdjacentSubtitle: (direction: 'next' | 'previous') => Promise<void>;
+  cycleRuntimeOption: (id: RuntimeOptionId, direction: 1 | -1) => RuntimeOptionApplyResult;
+  showMpvOsd: (text: string) => void;
+}
+
+function resolveCount(count: number | undefined): number {
+  const normalized = typeof count === 'number' && Number.isInteger(count) ? count : 1;
+  return Math.min(9, Math.max(1, normalized));
+}
+
+export async function dispatchSessionAction(
+  request: SessionActionDispatchRequest,
+  deps: SessionActionExecutorDeps,
+): Promise<void> {
+  switch (request.actionId) {
+    case 'toggleStatsOverlay':
+      deps.toggleStatsOverlay();
+      return;
+    case 'toggleVisibleOverlay':
+      deps.toggleVisibleOverlay();
+      return;
+    case 'copySubtitle':
+      deps.copyCurrentSubtitle();
+      return;
+    case 'copySubtitleMultiple':
+      deps.copySubtitleCount(resolveCount(request.payload?.count));
+      return;
+    case 'updateLastCardFromClipboard':
+      await deps.updateLastCardFromClipboard();
+      return;
+    case 'triggerFieldGrouping':
+      await deps.triggerFieldGrouping();
+      return;
+    case 'triggerSubsync':
+      await deps.triggerSubsyncFromConfig();
+      return;
+    case 'mineSentence':
+      await deps.mineSentenceCard();
+      return;
+    case 'mineSentenceMultiple':
+      deps.mineSentenceCount(resolveCount(request.payload?.count));
+      return;
+    case 'toggleSecondarySub':
+      deps.toggleSecondarySub();
+      return;
+    case 'markAudioCard':
+      await deps.markLastCardAsAudioCard();
+      return;
+    case 'openRuntimeOptions':
+      deps.openRuntimeOptionsPalette();
+      return;
+    case 'openJimaku':
+      deps.openJimaku();
+      return;
+    case 'openYoutubePicker':
+      await deps.openYoutubeTrackPicker();
+      return;
+    case 'openPlaylistBrowser':
+      await deps.openPlaylistBrowser();
+      return;
+    case 'replayCurrentSubtitle':
+      deps.replayCurrentSubtitle();
+      return;
+    case 'playNextSubtitle':
+      deps.playNextSubtitle();
+      return;
+    case 'shiftSubDelayPrevLine':
+      await deps.shiftSubDelayToAdjacentSubtitle('previous');
+      return;
+    case 'shiftSubDelayNextLine':
+      await deps.shiftSubDelayToAdjacentSubtitle('next');
+      return;
+    case 'cycleRuntimeOption': {
+      const runtimeOptionId = request.payload?.runtimeOptionId as RuntimeOptionId | undefined;
+      if (!runtimeOptionId) {
+        deps.showMpvOsd('Runtime option id is required.');
+        return;
+      }
+      const direction = request.payload?.direction === -1 ? -1 : 1;
+      const result = deps.cycleRuntimeOption(runtimeOptionId, direction);
+      if (!result.ok && result.error) {
+        deps.showMpvOsd(result.error);
+      }
+      return;
+    }
+  }
+}

src/core/services/session-bindings.test.ts

@@ -0,0 +1,247 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { Keybinding } from '../../types';
+import type { ConfiguredShortcuts } from '../utils/shortcut-config';
+import { SPECIAL_COMMANDS } from '../../config/definitions';
+import { compileSessionBindings } from './session-bindings';
+
+function createShortcuts(overrides: Partial<ConfiguredShortcuts> = {}): ConfiguredShortcuts {
+  return {
+    toggleVisibleOverlayGlobal: null,
+    copySubtitle: null,
+    copySubtitleMultiple: null,
+    updateLastCardFromClipboard: null,
+    triggerFieldGrouping: null,
+    triggerSubsync: null,
+    mineSentence: null,
+    mineSentenceMultiple: null,
+    multiCopyTimeoutMs: 2500,
+    toggleSecondarySub: null,
+    markAudioCard: null,
+    openRuntimeOptions: null,
+    openJimaku: null,
+    ...overrides,
+  };
+}
+
+function createKeybinding(key: string, command: Keybinding['command']): Keybinding {
+  return { key, command };
+}
+
+test('compileSessionBindings merges shortcuts and keybindings into one canonical list', () => {
+  const result = compileSessionBindings({
+    shortcuts: createShortcuts({
+      toggleVisibleOverlayGlobal: 'Alt+Shift+O',
+      openJimaku: 'Ctrl+Shift+J',
+    }),
+    keybindings: [
+      createKeybinding('KeyF', ['cycle', 'fullscreen']),
+      createKeybinding('Ctrl+Shift+Y', [SPECIAL_COMMANDS.YOUTUBE_PICKER_OPEN]),
+    ],
+    platform: 'linux',
+  });
+
+  assert.equal(result.warnings.length, 0);
+  assert.deepEqual(
+    result.bindings.map((binding) => ({
+      actionType: binding.actionType,
+      sourcePath: binding.sourcePath,
+      code: binding.key.code,
+      modifiers: binding.key.modifiers,
+      target:
+        binding.actionType === 'session-action'
+          ? binding.actionId
+          : binding.command.join(' '),
+    })),
+    [
+      {
+        actionType: 'mpv-command',
+        sourcePath: 'keybindings[0].key',
+        code: 'KeyF',
+        modifiers: [],
+        target: 'cycle fullscreen',
+      },
+      {
+        actionType: 'session-action',
+        sourcePath: 'keybindings[1].key',
+        code: 'KeyY',
+        modifiers: ['ctrl', 'shift'],
+        target: 'openYoutubePicker',
+      },
+      {
+        actionType: 'session-action',
+        sourcePath: 'shortcuts.openJimaku',
+        code: 'KeyJ',
+        modifiers: ['ctrl', 'shift'],
+        target: 'openJimaku',
+      },
+      {
+        actionType: 'session-action',
+        sourcePath: 'shortcuts.toggleVisibleOverlayGlobal',
+        code: 'KeyO',
+        modifiers: ['alt', 'shift'],
+        target: 'toggleVisibleOverlay',
+      },
+    ],
+  );
+});
+
+test('compileSessionBindings resolves CommandOrControl per platform', () => {
+  const input = {
+    shortcuts: createShortcuts({
+      toggleVisibleOverlayGlobal: 'CommandOrControl+Shift+O',
+    }),
+    keybindings: [],
+  };
+
+  const windows = compileSessionBindings({ ...input, platform: 'win32' });
+  const mac = compileSessionBindings({ ...input, platform: 'darwin' });
+
+  assert.deepEqual(windows.bindings[0]?.key.modifiers, ['ctrl', 'shift']);
+  assert.deepEqual(mac.bindings[0]?.key.modifiers, ['shift', 'meta']);
+});
+
+test('compileSessionBindings resolves CommandOrControl in DOM key strings per platform', () => {
+  const input = {
+    shortcuts: createShortcuts(),
+    keybindings: [createKeybinding('CommandOrControl+Shift+J', ['cycle', 'fullscreen'])],
+    statsToggleKey: 'CommandOrControl+Backquote',
+  };
+
+  const windows = compileSessionBindings({ ...input, platform: 'win32' });
+  const mac = compileSessionBindings({ ...input, platform: 'darwin' });
+
+  assert.deepEqual(
+    windows.bindings
+      .map((binding) => ({
+        sourcePath: binding.sourcePath,
+        modifiers: binding.key.modifiers,
+      }))
+      .sort((left, right) => left.sourcePath.localeCompare(right.sourcePath)),
+    [
+      {
+        sourcePath: 'keybindings[0].key',
+        modifiers: ['ctrl', 'shift'],
+      },
+      {
+        sourcePath: 'stats.toggleKey',
+        modifiers: ['ctrl'],
+      },
+    ],
+  );
+
+  assert.deepEqual(
+    mac.bindings
+      .map((binding) => ({
+        sourcePath: binding.sourcePath,
+        modifiers: binding.key.modifiers,
+      }))
+      .sort((left, right) => left.sourcePath.localeCompare(right.sourcePath)),
+    [
+      {
+        sourcePath: 'keybindings[0].key',
+        modifiers: ['shift', 'meta'],
+      },
+      {
+        sourcePath: 'stats.toggleKey',
+        modifiers: ['meta'],
+      },
+    ],
+  );
+});
+
+test('compileSessionBindings drops conflicting bindings that canonicalize to the same key', () => {
+  const result = compileSessionBindings({
+    shortcuts: createShortcuts({
+      openJimaku: 'Ctrl+Shift+J',
+    }),
+    keybindings: [createKeybinding('Ctrl+Shift+J', [SPECIAL_COMMANDS.PLAYLIST_BROWSER_OPEN])],
+    platform: 'linux',
+  });
+
+  assert.deepEqual(result.bindings, []);
+  assert.equal(result.warnings.length, 1);
+  assert.equal(result.warnings[0]?.kind, 'conflict');
+  assert.deepEqual(result.warnings[0]?.conflictingPaths, [
+    'shortcuts.openJimaku',
+    'keybindings[0].key',
+  ]);
+});
+
+test('compileSessionBindings omits disabled bindings', () => {
+  const result = compileSessionBindings({
+    shortcuts: createShortcuts({
+      openJimaku: null,
+      toggleVisibleOverlayGlobal: 'Alt+Shift+O',
+    }),
+    keybindings: [createKeybinding('Ctrl+Shift+J', null)],
+    platform: 'linux',
+  });
+
+  assert.equal(result.warnings.length, 0);
+  assert.deepEqual(result.bindings.map((binding) => binding.sourcePath), [
+    'shortcuts.toggleVisibleOverlayGlobal',
+  ]);
+});
+
+test('compileSessionBindings warns on unsupported shortcut and keybinding syntax', () => {
+  const result = compileSessionBindings({
+    shortcuts: createShortcuts({
+      openJimaku: 'Hyper+J',
+    }),
+    keybindings: [createKeybinding('Ctrl+ß', ['cycle', 'fullscreen'])],
+    platform: 'linux',
+  });
+
+  assert.deepEqual(result.bindings, []);
+  assert.deepEqual(
+    result.warnings.map((warning) => `${warning.kind}:${warning.path}`),
+    ['unsupported:shortcuts.openJimaku', 'unsupported:keybindings[0].key'],
+  );
+});
+
+test('compileSessionBindings warns on deprecated toggleVisibleOverlayGlobal config', () => {
+  const result = compileSessionBindings({
+    shortcuts: createShortcuts(),
+    keybindings: [],
+    platform: 'linux',
+    rawConfig: {
+      shortcuts: {
+        toggleVisibleOverlayGlobal: 'Alt+Shift+O',
+      },
+    } as never,
+  });
+
+  assert.equal(result.bindings.length, 0);
+  assert.deepEqual(result.warnings, [
+    {
+      kind: 'deprecated-config',
+      path: 'shortcuts.toggleVisibleOverlayGlobal',
+      value: 'Alt+Shift+O',
+      message: 'Rename shortcuts.toggleVisibleOverlayGlobal to shortcuts.toggleVisibleOverlay.',
+    },
+  ]);
+});
+
+test('compileSessionBindings includes stats toggle in the shared session binding artifact', () => {
+  const result = compileSessionBindings({
+    shortcuts: createShortcuts(),
+    keybindings: [],
+    statsToggleKey: 'Backquote',
+    platform: 'win32',
+  });
+
+  assert.equal(result.warnings.length, 0);
+  assert.deepEqual(result.bindings, [
+    {
+      sourcePath: 'stats.toggleKey',
+      originalKey: 'Backquote',
+      key: {
+        code: 'Backquote',
+        modifiers: [],
+      },
+      actionType: 'session-action',
+      actionId: 'toggleStatsOverlay',
+    },
+  ]);
+});

src/core/services/session-bindings.ts

@@ -0,0 +1,431 @@
+import type { Keybinding, ResolvedConfig } from '../../types';
+import type { ConfiguredShortcuts } from '../utils/shortcut-config';
+import type {
+  CompiledMpvCommandBinding,
+  CompiledSessionActionBinding,
+  CompiledSessionBinding,
+  PluginSessionBindingsArtifact,
+  SessionActionId,
+  SessionBindingWarning,
+  SessionKeyModifier,
+  SessionKeySpec,
+} from '../../types/session-bindings';
+import { SPECIAL_COMMANDS } from '../../config';
+
+type PlatformKeyModel = 'darwin' | 'win32' | 'linux';
+
+type CompileSessionBindingsInput = {
+  keybindings: Keybinding[];
+  shortcuts: ConfiguredShortcuts;
+  statsToggleKey?: string | null;
+  platform: PlatformKeyModel;
+  rawConfig?: ResolvedConfig | null;
+};
+
+type DraftBinding = {
+  binding: CompiledSessionBinding;
+  actionFingerprint: string;
+};
+
+const MODIFIER_ORDER: SessionKeyModifier[] = ['ctrl', 'alt', 'shift', 'meta'];
+
+const SESSION_SHORTCUT_ACTIONS: Array<{
+  key: keyof Omit<ConfiguredShortcuts, 'multiCopyTimeoutMs'>;
+  actionId: SessionActionId;
+}> = [
+  { key: 'toggleVisibleOverlayGlobal', actionId: 'toggleVisibleOverlay' },
+  { key: 'copySubtitle', actionId: 'copySubtitle' },
+  { key: 'copySubtitleMultiple', actionId: 'copySubtitleMultiple' },
+  { key: 'updateLastCardFromClipboard', actionId: 'updateLastCardFromClipboard' },
+  { key: 'triggerFieldGrouping', actionId: 'triggerFieldGrouping' },
+  { key: 'triggerSubsync', actionId: 'triggerSubsync' },
+  { key: 'mineSentence', actionId: 'mineSentence' },
+  { key: 'mineSentenceMultiple', actionId: 'mineSentenceMultiple' },
+  { key: 'toggleSecondarySub', actionId: 'toggleSecondarySub' },
+  { key: 'markAudioCard', actionId: 'markAudioCard' },
+  { key: 'openRuntimeOptions', actionId: 'openRuntimeOptions' },
+  { key: 'openJimaku', actionId: 'openJimaku' },
+];
+
+function normalizeModifiers(modifiers: SessionKeyModifier[]): SessionKeyModifier[] {
+  return [...new Set(modifiers)].sort(
+    (left, right) => MODIFIER_ORDER.indexOf(left) - MODIFIER_ORDER.indexOf(right),
+  );
+}
+
+function normalizeCodeToken(token: string): string | null {
+  const normalized = token.trim();
+  if (!normalized) return null;
+  if (/^[a-z]$/i.test(normalized)) {
+    return `Key${normalized.toUpperCase()}`;
+  }
+  if (/^[0-9]$/.test(normalized)) {
+    return `Digit${normalized}`;
+  }
+
+  const exactMap: Record<string, string> = {
+    space: 'Space',
+    tab: 'Tab',
+    enter: 'Enter',
+    return: 'Enter',
+    esc: 'Escape',
+    escape: 'Escape',
+    up: 'ArrowUp',
+    down: 'ArrowDown',
+    left: 'ArrowLeft',
+    right: 'ArrowRight',
+    backspace: 'Backspace',
+    delete: 'Delete',
+    slash: 'Slash',
+    backslash: 'Backslash',
+    minus: 'Minus',
+    plus: 'Equal',
+    equal: 'Equal',
+    comma: 'Comma',
+    period: 'Period',
+    quote: 'Quote',
+    semicolon: 'Semicolon',
+    bracketleft: 'BracketLeft',
+    bracketright: 'BracketRight',
+    backquote: 'Backquote',
+  };
+  const lower = normalized.toLowerCase();
+  if (exactMap[lower]) return exactMap[lower];
+  if (
+    /^key[a-z]$/i.test(normalized) ||
+    /^digit[0-9]$/i.test(normalized) ||
+    /^arrow(?:up|down|left|right)$/i.test(normalized) ||
+    /^f\d{1,2}$/i.test(normalized)
+  ) {
+    return normalized[0]!.toUpperCase() + normalized.slice(1);
+  }
+  return null;
+}
+
+function parseAccelerator(
+  accelerator: string,
+  platform: PlatformKeyModel,
+): { key: SessionKeySpec | null; message?: string } {
+  const normalized = accelerator.replace(/\s+/g, '').replace(/cmdorctrl/gi, 'CommandOrControl');
+  if (!normalized) {
+    return { key: null, message: 'Empty accelerator is not supported.' };
+  }
+
+  const parts = normalized.split('+').filter(Boolean);
+  const keyToken = parts.pop();
+  if (!keyToken) {
+    return { key: null, message: 'Missing accelerator key token.' };
+  }
+
+  const modifiers: SessionKeyModifier[] = [];
+  for (const modifier of parts) {
+    const lower = modifier.toLowerCase();
+    if (lower === 'ctrl' || lower === 'control') {
+      modifiers.push('ctrl');
+      continue;
+    }
+    if (lower === 'alt' || lower === 'option') {
+      modifiers.push('alt');
+      continue;
+    }
+    if (lower === 'shift') {
+      modifiers.push('shift');
+      continue;
+    }
+    if (lower === 'meta' || lower === 'super' || lower === 'command' || lower === 'cmd') {
+      modifiers.push('meta');
+      continue;
+    }
+    if (lower === 'commandorcontrol') {
+      modifiers.push(platform === 'darwin' ? 'meta' : 'ctrl');
+      continue;
+    }
+    return {
+      key: null,
+      message: `Unsupported accelerator modifier: ${modifier}`,
+    };
+  }
+
+  const code = normalizeCodeToken(keyToken);
+  if (!code) {
+    return {
+      key: null,
+      message: `Unsupported accelerator key token: ${keyToken}`,
+    };
+  }
+
+  return {
+    key: {
+      code,
+      modifiers: normalizeModifiers(modifiers),
+    },
+  };
+}
+
+function parseDomKeyString(
+  key: string,
+  platform: PlatformKeyModel,
+): { key: SessionKeySpec | null; message?: string } {
+  const parts = key
+    .split('+')
+    .map((part) => part.trim())
+    .filter(Boolean);
+  const keyToken = parts.pop();
+  if (!keyToken) {
+    return { key: null, message: 'Missing keybinding key token.' };
+  }
+
+  const modifiers: SessionKeyModifier[] = [];
+  for (const modifier of parts) {
+    const lower = modifier.toLowerCase();
+    if (lower === 'ctrl' || lower === 'control') {
+      modifiers.push('ctrl');
+      continue;
+    }
+    if (lower === 'alt' || lower === 'option') {
+      modifiers.push('alt');
+      continue;
+    }
+    if (lower === 'shift') {
+      modifiers.push('shift');
+      continue;
+    }
+    if (
+      lower === 'meta' ||
+      lower === 'super' ||
+      lower === 'command' ||
+      lower === 'cmd' ||
+      lower === 'commandorcontrol'
+    ) {
+      modifiers.push(
+        lower === 'commandorcontrol' ? (platform === 'darwin' ? 'meta' : 'ctrl') : 'meta',
+      );
+      continue;
+    }
+    return {
+      key: null,
+      message: `Unsupported keybinding modifier: ${modifier}`,
+    };
+  }
+
+  const code = normalizeCodeToken(keyToken);
+  if (!code) {
+    return {
+      key: null,
+      message: `Unsupported keybinding token: ${keyToken}`,
+    };
+  }
+
+  return {
+    key: {
+      code,
+      modifiers: normalizeModifiers(modifiers),
+    },
+  };
+}
+
+export function getSessionKeySpecSignature(key: SessionKeySpec): string {
+  return [...key.modifiers, key.code].join('+');
+}
+
+function resolveCommandBinding(
+  binding: Keybinding,
+):
+  | Omit<CompiledMpvCommandBinding, 'key' | 'sourcePath' | 'originalKey'>
+  | Omit<CompiledSessionActionBinding, 'key' | 'sourcePath' | 'originalKey'>
+  | null {
+  const command = binding.command ?? [];
+  const first = typeof command[0] === 'string' ? command[0] : '';
+  if (first === SPECIAL_COMMANDS.SUBSYNC_TRIGGER) {
+    return { actionType: 'session-action', actionId: 'triggerSubsync' };
+  }
+  if (first === SPECIAL_COMMANDS.RUNTIME_OPTIONS_OPEN) {
+    return { actionType: 'session-action', actionId: 'openRuntimeOptions' };
+  }
+  if (first === SPECIAL_COMMANDS.JIMAKU_OPEN) {
+    return { actionType: 'session-action', actionId: 'openJimaku' };
+  }
+  if (first === SPECIAL_COMMANDS.YOUTUBE_PICKER_OPEN) {
+    return { actionType: 'session-action', actionId: 'openYoutubePicker' };
+  }
+  if (first === SPECIAL_COMMANDS.PLAYLIST_BROWSER_OPEN) {
+    return { actionType: 'session-action', actionId: 'openPlaylistBrowser' };
+  }
+  if (first === SPECIAL_COMMANDS.REPLAY_SUBTITLE) {
+    return { actionType: 'session-action', actionId: 'replayCurrentSubtitle' };
+  }
+  if (first === SPECIAL_COMMANDS.PLAY_NEXT_SUBTITLE) {
+    return { actionType: 'session-action', actionId: 'playNextSubtitle' };
+  }
+  if (first === SPECIAL_COMMANDS.SHIFT_SUB_DELAY_TO_PREVIOUS_SUBTITLE_START) {
+    return { actionType: 'session-action', actionId: 'shiftSubDelayPrevLine' };
+  }
+  if (first === SPECIAL_COMMANDS.SHIFT_SUB_DELAY_TO_NEXT_SUBTITLE_START) {
+    return { actionType: 'session-action', actionId: 'shiftSubDelayNextLine' };
+  }
+  if (first.startsWith(SPECIAL_COMMANDS.RUNTIME_OPTION_CYCLE_PREFIX)) {
+    const [, runtimeOptionId, rawDirection] = first.split(':');
+    return {
+      actionType: 'session-action',
+      actionId: 'cycleRuntimeOption',
+      payload: {
+        runtimeOptionId,
+        direction: rawDirection === 'prev' ? -1 : 1,
+      },
+    };
+  }
+
+  return {
+    actionType: 'mpv-command',
+    command,
+  };
+}
+
+function getBindingFingerprint(binding: CompiledSessionBinding): string {
+  if (binding.actionType === 'mpv-command') {
+    return `mpv:${JSON.stringify(binding.command)}`;
+  }
+  return `session:${binding.actionId}:${JSON.stringify(binding.payload ?? null)}`;
+}
+
+export function compileSessionBindings(
+  input: CompileSessionBindingsInput,
+): {
+  bindings: CompiledSessionBinding[];
+  warnings: SessionBindingWarning[];
+} {
+  const warnings: SessionBindingWarning[] = [];
+  const candidates = new Map<string, DraftBinding[]>();
+  const legacyToggleVisibleOverlayGlobal = (
+    input.rawConfig?.shortcuts as Record<string, unknown> | undefined
+  )?.toggleVisibleOverlayGlobal;
+  const statsToggleKey = input.statsToggleKey ?? input.rawConfig?.stats?.toggleKey ?? null;
+
+  if (legacyToggleVisibleOverlayGlobal !== undefined) {
+    warnings.push({
+      kind: 'deprecated-config',
+      path: 'shortcuts.toggleVisibleOverlayGlobal',
+      value: legacyToggleVisibleOverlayGlobal,
+      message: 'Rename shortcuts.toggleVisibleOverlayGlobal to shortcuts.toggleVisibleOverlay.',
+    });
+  }
+
+  for (const shortcut of SESSION_SHORTCUT_ACTIONS) {
+    const accelerator = input.shortcuts[shortcut.key];
+    if (!accelerator) continue;
+    const parsed = parseAccelerator(accelerator, input.platform);
+    if (!parsed.key) {
+      warnings.push({
+        kind: 'unsupported',
+        path: `shortcuts.${shortcut.key}`,
+        value: accelerator,
+        message: parsed.message ?? 'Unsupported accelerator syntax.',
+      });
+      continue;
+    }
+    const binding: CompiledSessionActionBinding = {
+      sourcePath: `shortcuts.${shortcut.key}`,
+      originalKey: accelerator,
+      key: parsed.key,
+      actionType: 'session-action',
+      actionId: shortcut.actionId,
+    };
+    const signature = getSessionKeySpecSignature(parsed.key);
+    const draft = candidates.get(signature) ?? [];
+    draft.push({
+      binding,
+      actionFingerprint: getBindingFingerprint(binding),
+    });
+    candidates.set(signature, draft);
+  }
+
+  if (statsToggleKey) {
+    const parsed = parseDomKeyString(statsToggleKey, input.platform);
+    if (!parsed.key) {
+      warnings.push({
+        kind: 'unsupported',
+        path: 'stats.toggleKey',
+        value: statsToggleKey,
+        message: parsed.message ?? 'Unsupported stats toggle key syntax.',
+      });
+    } else {
+      const binding: CompiledSessionActionBinding = {
+        sourcePath: 'stats.toggleKey',
+        originalKey: statsToggleKey,
+        key: parsed.key,
+        actionType: 'session-action',
+        actionId: 'toggleStatsOverlay',
+      };
+      const signature = getSessionKeySpecSignature(parsed.key);
+      const draft = candidates.get(signature) ?? [];
+      draft.push({
+        binding,
+        actionFingerprint: getBindingFingerprint(binding),
+      });
+      candidates.set(signature, draft);
+    }
+  }
+
+  input.keybindings.forEach((binding, index) => {
+    if (!binding.command) return;
+    const parsed = parseDomKeyString(binding.key, input.platform);
+    if (!parsed.key) {
+      warnings.push({
+        kind: 'unsupported',
+        path: `keybindings[${index}].key`,
+        value: binding.key,
+        message: parsed.message ?? 'Unsupported keybinding syntax.',
+      });
+      return;
+    }
+    const resolved = resolveCommandBinding(binding);
+    if (!resolved) return;
+    const compiled: CompiledSessionBinding = {
+      sourcePath: `keybindings[${index}].key`,
+      originalKey: binding.key,
+      key: parsed.key,
+      ...resolved,
+    };
+    const signature = getSessionKeySpecSignature(parsed.key);
+    const draft = candidates.get(signature) ?? [];
+    draft.push({
+      binding: compiled,
+      actionFingerprint: getBindingFingerprint(compiled),
+    });
+    candidates.set(signature, draft);
+  });
+
+  const bindings: CompiledSessionBinding[] = [];
+  for (const [signature, draftBindings] of candidates.entries()) {
+    const uniqueFingerprints = new Set(draftBindings.map((entry) => entry.actionFingerprint));
+    if (uniqueFingerprints.size > 1) {
+      warnings.push({
+        kind: 'conflict',
+        path: draftBindings[0]!.binding.sourcePath,
+        value: signature,
+        conflictingPaths: draftBindings.map((entry) => entry.binding.sourcePath),
+        message: `Conflicting session bindings compile to ${signature}; SubMiner will bind neither action.`,
+      });
+      continue;
+    }
+    bindings.push(draftBindings[0]!.binding);
+  }
+
+  bindings.sort((left, right) => left.sourcePath.localeCompare(right.sourcePath));
+  return { bindings, warnings };
+}
+
+export function buildPluginSessionBindingsArtifact(input: {
+  bindings: CompiledSessionBinding[];
+  warnings: SessionBindingWarning[];
+  numericSelectionTimeoutMs: number;
+  now?: Date;
+}): PluginSessionBindingsArtifact {
+  return {
+    version: 1,
+    generatedAt: (input.now ?? new Date()).toISOString(),
+    numericSelectionTimeoutMs: input.numericSelectionTimeoutMs,
+    bindings: input.bindings,
+    warnings: input.warnings,
+  };
+}

src/core/services/shortcut.ts

@@ -20,42 +20,6 @@ export interface RegisterGlobalShortcutsServiceOptions {
 }
 
 export function registerGlobalShortcuts(options: RegisterGlobalShortcutsServiceOptions): void {
-  const visibleShortcut = options.shortcuts.toggleVisibleOverlayGlobal;
-  const normalizedVisible = visibleShortcut?.replace(/\s+/g, '').toLowerCase();
-  const normalizedJimaku = options.shortcuts.openJimaku?.replace(/\s+/g, '').toLowerCase();
-  const normalizedSettings = 'alt+shift+y';
-
-  if (visibleShortcut) {
-    const toggleVisibleRegistered = globalShortcut.register(visibleShortcut, () => {
-      options.onToggleVisibleOverlay();
-    });
-    if (!toggleVisibleRegistered) {
-      logger.warn(
-        `Failed to register global shortcut toggleVisibleOverlayGlobal: ${visibleShortcut}`,
-      );
-    }
-  }
-
-  if (options.shortcuts.openJimaku && options.onOpenJimaku) {
-    if (
-      normalizedJimaku &&
-      (normalizedJimaku === normalizedVisible || normalizedJimaku === normalizedSettings)
-    ) {
-      logger.warn(
-        'Skipped registering openJimaku because it collides with another global shortcut',
-      );
-    } else {
-      const openJimakuRegistered = globalShortcut.register(options.shortcuts.openJimaku, () => {
-        options.onOpenJimaku?.();
-      });
-      if (!openJimakuRegistered) {
-        logger.warn(
-          `Failed to register global shortcut openJimaku: ${options.shortcuts.openJimaku}`,
-        );
-      }
-    }
-  }
-
   const settingsRegistered = globalShortcut.register('Alt+Shift+Y', () => {
     options.onOpenYomitanSettings();
   });

src/core/services/startup-bootstrap.test.ts

@@ -29,6 +29,13 @@ function makeArgs(overrides: Partial<CliArgs> = {}): CliArgs {
     triggerSubsync: false,
     markAudioCard: false,
     openRuntimeOptions: false,
+    openJimaku: false,
+    openYoutubePicker: false,
+    openPlaylistBrowser: false,
+    replayCurrentSubtitle: false,
+    playNextSubtitle: false,
+    shiftSubDelayPrevLine: false,
+    shiftSubDelayNextLine: false,
     anilistStatus: false,
     anilistLogout: false,
     anilistSetup: false,

src/main.ts

@@ -109,11 +109,13 @@ import * as os from 'os';
 import * as path from 'path';
 import { MecabTokenizer } from './mecab-tokenizer';
 import type {
+  CompiledSessionBinding,
   JimakuApiResponse,
   KikuFieldGroupingChoice,
   MpvSubtitleRenderMetrics,
   ResolvedConfig,
   RuntimeOptionState,
+  SessionActionDispatchRequest,
   SecondarySubMode,
   SubtitleData,
   SubtitlePosition,
@@ -137,7 +139,6 @@ import {
   getWindowsForegroundProcessNameNative,
   queryWindowsForegroundProcessName,
   setWindowsOverlayOwnerNative,
-  syncWindowsOverlayToMpvZOrder,
 } from './window-trackers/windows-helper';
 import {
   commandNeedsOverlayStartupPrereqs,
@@ -351,6 +352,7 @@ import { resolveYoutubePlaybackUrl } from './core/services/youtube/playback-reso
 import { probeYoutubeTracks } from './core/services/youtube/track-probe';
 import { startStatsServer } from './core/services/stats-server';
 import { registerStatsOverlayToggle, destroyStatsWindow } from './core/services/stats-window.js';
+import { toggleStatsOverlay as toggleStatsOverlayWindow } from './core/services/stats-window.js';
 import {
   createFirstRunSetupService,
   getFirstRunSetupCompletionMessage,
@@ -413,6 +415,8 @@ import { createAnilistRateLimiter } from './core/services/anilist/rate-limiter';
 import { createJellyfinTokenStore } from './core/services/jellyfin-token-store';
 import { applyRuntimeOptionResultRuntime } from './core/services/runtime-options-ipc';
 import { createAnilistTokenStore } from './core/services/anilist/anilist-token-store';
+import { buildPluginSessionBindingsArtifact, compileSessionBindings } from './core/services/session-bindings';
+import { dispatchSessionAction as dispatchSessionActionCore } from './core/services/session-actions';
 import { createBuildOverlayShortcutsRuntimeMainDepsHandler } from './main/runtime/domains/shortcuts';
 import { createMainRuntimeRegistry } from './main/runtime/registry';
 import {
@@ -449,6 +453,7 @@ import { createOverlayModalRuntimeService } from './main/overlay-runtime';
 import { createOverlayModalInputState } from './main/runtime/overlay-modal-input-state';
 import { openYoutubeTrackPicker } from './main/runtime/youtube-picker-open';
 import { createPlaylistBrowserIpcRuntime } from './main/runtime/playlist-browser-ipc';
+import { writeSessionBindingsArtifact } from './main/runtime/session-bindings-artifact';
 import { createOverlayShortcutsRuntimeService } from './main/overlay-shortcuts-runtime';
 import {
   createFrequencyDictionaryRuntimeService,
@@ -1535,6 +1540,9 @@ const buildConfigHotReloadAppliedMainDepsHandler = createBuildConfigHotReloadApp
     setKeybindings: (keybindings) => {
       appState.keybindings = keybindings;
     },
+    setSessionBindings: (sessionBindings) => {
+      persistSessionBindings(sessionBindings);
+    },
     refreshGlobalAndOverlayShortcuts: () => {
       refreshGlobalAndOverlayShortcuts();
     },
@@ -1927,6 +1935,21 @@ function getWindowsNativeWindowHandleNumber(window: BrowserWindow): number {
     : handle.readUInt32LE(0);
 }
 
+function resolveWindowsOverlayBindTargetHandle(targetMpvSocketPath?: string | null): number | null {
+  if (process.platform !== 'win32') {
+    return null;
+  }
+
+  try {
+    const win32 = require('./window-trackers/win32') as typeof import('./window-trackers/win32');
+    const poll = win32.findMpvWindows();
+    const focused = poll.matches.find((m) => m.isForeground);
+    return focused?.hwnd ?? poll.matches.sort((a, b) => b.area - a.area)[0]?.hwnd ?? null;
+  } catch {
+    return null;
+  }
+}
+
 async function syncWindowsVisibleOverlayToMpvZOrder(): Promise<boolean> {
   if (process.platform !== 'win32') {
     return false;
@@ -1959,19 +1982,12 @@ async function syncWindowsVisibleOverlayToMpvZOrder(): Promise<boolean> {
   }
 
   const overlayHwnd = getWindowsNativeWindowHandleNumber(mainWindow);
-  if (bindWindowsOverlayAboveMpvNative(overlayHwnd)) {
+  const targetWindowHwnd = resolveWindowsOverlayBindTargetHandle(appState.mpvSocketPath);
+  if (targetWindowHwnd !== null && bindWindowsOverlayAboveMpvNative(overlayHwnd, targetWindowHwnd)) {
     (mainWindow as BrowserWindow & { setOpacity?: (opacity: number) => void }).setOpacity?.(1);
     return true;
   }
-
-  const synced = await syncWindowsOverlayToMpvZOrder({
-    overlayWindowHandle: getWindowsNativeWindowHandle(mainWindow),
-    targetMpvSocketPath: appState.mpvSocketPath,
-  });
-  if (synced) {
-    (mainWindow as BrowserWindow & { setOpacity?: (opacity: number) => void }).setOpacity?.(1);
-  }
-  return synced;
+  return false;
 }
 
 function requestWindowsVisibleOverlayZOrderSync(): void {
@@ -3378,6 +3394,7 @@ const { appReadyRuntimeRunner } = composeAppReadyRuntime({
     loadSubtitlePosition: () => loadSubtitlePosition(),
     resolveKeybindings: () => {
       appState.keybindings = resolveKeybindings(getResolvedConfig(), DEFAULT_KEYBINDINGS);
+      refreshCurrentSessionBindings();
     },
     createMpvClient: () => {
       appState.mpvClient = createMpvClientRuntimeService();
@@ -3520,6 +3537,9 @@ function ensureOverlayStartupPrereqs(): void {
   }
   if (appState.keybindings.length === 0) {
     appState.keybindings = resolveKeybindings(getResolvedConfig(), DEFAULT_KEYBINDINGS);
+    refreshCurrentSessionBindings();
+  } else if (appState.sessionBindings.length === 0) {
+    refreshCurrentSessionBindings();
   }
   if (!appState.mpvClient) {
     appState.mpvClient = createMpvClientRuntimeService();
@@ -4118,6 +4138,54 @@ const {
   },
 });
 
+function resolveSessionBindingPlatform(): 'darwin' | 'win32' | 'linux' {
+  if (process.platform === 'darwin') return 'darwin';
+  if (process.platform === 'win32') return 'win32';
+  return 'linux';
+}
+
+function compileCurrentSessionBindings(): {
+  bindings: CompiledSessionBinding[];
+  warnings: ReturnType<typeof compileSessionBindings>['warnings'];
+} {
+  return compileSessionBindings({
+    keybindings: appState.keybindings,
+    shortcuts: getConfiguredShortcuts(),
+    statsToggleKey: getResolvedConfig().stats.toggleKey,
+    platform: resolveSessionBindingPlatform(),
+    rawConfig: getResolvedConfig(),
+  });
+}
+
+function persistSessionBindings(
+  bindings: CompiledSessionBinding[],
+  warnings: ReturnType<typeof compileSessionBindings>['warnings'] = [],
+): void {
+  appState.sessionBindings = bindings;
+  writeSessionBindingsArtifact(
+    CONFIG_DIR,
+    buildPluginSessionBindingsArtifact({
+      bindings,
+      warnings,
+      numericSelectionTimeoutMs: getConfiguredShortcuts().multiCopyTimeoutMs,
+    }),
+  );
+  if (appState.mpvClient?.connected) {
+    sendMpvCommandRuntime(appState.mpvClient, [
+      'script-message',
+      'subminer-reload-session-bindings',
+    ]);
+  }
+}
+
+function refreshCurrentSessionBindings(): void {
+  const compiled = compileCurrentSessionBindings();
+  for (const warning of compiled.warnings) {
+    logger.warn(`[session-bindings] ${warning.message}`);
+  }
+  persistSessionBindings(compiled.bindings, compiled.warnings);
+}
+
 const { flushMpvLog, showMpvOsd } = createMpvOsdRuntimeHandlers({
   appendToMpvLogMainDeps: {
     logPath: DEFAULT_MPV_LOG_PATH,
@@ -4429,6 +4497,51 @@ const shiftSubtitleDelayToAdjacentCueHandler = createShiftSubtitleDelayToAdjacen
   showMpvOsd: (text) => showMpvOsd(text),
 });
 
+async function dispatchSessionAction(request: SessionActionDispatchRequest): Promise<void> {
+  await dispatchSessionActionCore(request, {
+    toggleStatsOverlay: () =>
+      toggleStatsOverlayWindow({
+        staticDir: statsDistPath,
+        preloadPath: statsPreloadPath,
+        getApiBaseUrl: () => ensureStatsServerStarted(),
+        getToggleKey: () => getResolvedConfig().stats.toggleKey,
+        resolveBounds: () => getCurrentOverlayGeometry(),
+        onVisibilityChanged: (visible) => {
+          appState.statsOverlayVisible = visible;
+          overlayVisibilityRuntime.updateVisibleOverlayVisibility();
+        },
+      }),
+    toggleVisibleOverlay: () => toggleVisibleOverlay(),
+    copyCurrentSubtitle: () => copyCurrentSubtitle(),
+    copySubtitleCount: (count) => handleMultiCopyDigit(count),
+    updateLastCardFromClipboard: () => updateLastCardFromClipboard(),
+    triggerFieldGrouping: () => triggerFieldGrouping(),
+    triggerSubsyncFromConfig: () => triggerSubsyncFromConfig(),
+    mineSentenceCard: () => mineSentenceCard(),
+    mineSentenceCount: (count) => handleMineSentenceDigit(count),
+    toggleSecondarySub: () => handleCycleSecondarySubMode(),
+    markLastCardAsAudioCard: () => markLastCardAsAudioCard(),
+    openRuntimeOptionsPalette: () => openRuntimeOptionsPalette(),
+    openJimaku: () => overlayModalRuntime.openJimaku(),
+    openYoutubeTrackPicker: () => openYoutubeTrackPickerFromPlayback(),
+    openPlaylistBrowser: () => openPlaylistBrowser(),
+    replayCurrentSubtitle: () => replayCurrentSubtitleRuntime(appState.mpvClient),
+    playNextSubtitle: () => playNextSubtitleRuntime(appState.mpvClient),
+    shiftSubDelayToAdjacentSubtitle: (direction) =>
+      shiftSubtitleDelayToAdjacentCueHandler(direction),
+    cycleRuntimeOption: (id, direction) => {
+      if (!appState.runtimeOptionsManager) {
+        return { ok: false, error: 'Runtime options manager unavailable' };
+      }
+      return applyRuntimeOptionResultRuntime(
+        appState.runtimeOptionsManager.cycleOption(id, direction),
+        (text) => showMpvOsd(text),
+      );
+    },
+    showMpvOsd: (text) => showMpvOsd(text),
+  });
+}
+
 const { playlistBrowserMainDeps } = createPlaylistBrowserIpcRuntime(() => appState.mpvClient, {
   getPrimarySubtitleLanguages: () => getResolvedConfig().youtube.primarySubLanguages,
   getSecondarySubtitleLanguages: () => getResolvedConfig().secondarySub.secondarySubLanguages,
@@ -4586,7 +4699,9 @@ const { registerIpcRuntimeHandlers } = composeIpcRuntimeHandlers({
       saveSubtitlePosition: (position) => saveSubtitlePosition(position),
       getMecabTokenizer: () => appState.mecabTokenizer,
       getKeybindings: () => appState.keybindings,
+      getSessionBindings: () => appState.sessionBindings,
       getConfiguredShortcuts: () => getConfiguredShortcuts(),
+      dispatchSessionAction: (request) => dispatchSessionAction(request),
       getStatsToggleKey: () => getResolvedConfig().stats.toggleKey,
       getMarkWatchedKey: () => getResolvedConfig().stats.markWatchedKey,
       getControllerConfig: () => getResolvedConfig().controller,
@@ -4707,6 +4822,7 @@ const { handleCliCommand, handleInitialArgs } = composeCliStartupHandlers({
     printHelp: () => printHelp(DEFAULT_TEXTHOOKER_PORT),
     stopApp: () => requestAppQuit(),
     hasMainWindow: () => Boolean(overlayManager.getMainWindow()),
+    dispatchSessionAction: (request: SessionActionDispatchRequest) => dispatchSessionAction(request),
     getMultiCopyTimeoutMs: () => getConfiguredShortcuts().multiCopyTimeoutMs,
     schedule: (fn: () => void, delayMs: number) => setTimeout(fn, delayMs),
     logInfo: (message: string) => logger.info(message),
@@ -4973,7 +5089,8 @@ const { initializeOverlayRuntime: initializeOverlayRuntimeHandler } =
         const mainWindow = overlayManager.getMainWindow();
         if (process.platform !== 'win32' || !mainWindow || mainWindow.isDestroyed()) return;
         const overlayHwnd = getWindowsNativeWindowHandleNumber(mainWindow);
-        if (bindWindowsOverlayAboveMpvNative(overlayHwnd)) {
+        const targetWindowHwnd = resolveWindowsOverlayBindTargetHandle(appState.mpvSocketPath);
+        if (targetWindowHwnd !== null && bindWindowsOverlayAboveMpvNative(overlayHwnd, targetWindowHwnd)) {
           return;
         }
         const tracker = appState.windowTracker;

src/main/cli-runtime.ts

@@ -30,6 +30,7 @@ export interface CliCommandRuntimeServiceContext {
   triggerFieldGrouping: () => Promise<void>;
   triggerSubsyncFromConfig: () => Promise<void>;
   markLastCardAsAudioCard: () => Promise<void>;
+  dispatchSessionAction: CliCommandRuntimeServiceDepsParams['dispatchSessionAction'];
   getAnilistStatus: CliCommandRuntimeServiceDepsParams['anilist']['getStatus'];
   clearAnilistToken: CliCommandRuntimeServiceDepsParams['anilist']['clearToken'];
   openAnilistSetup: CliCommandRuntimeServiceDepsParams['anilist']['openSetup'];
@@ -113,6 +114,7 @@ function createCliCommandDepsFromContext(
       hasMainWindow: context.hasMainWindow,
       runYoutubePlaybackFlow: context.runYoutubePlaybackFlow,
     },
+    dispatchSessionAction: context.dispatchSessionAction,
     ui: {
       openFirstRunSetup: context.openFirstRunSetup,
       openYomitanSettings: context.openYomitanSettings,

src/main/dependencies.ts

@@ -73,7 +73,9 @@ export interface MainIpcRuntimeServiceDepsParams {
   getMecabTokenizer: IpcDepsRuntimeOptions['getMecabTokenizer'];
   handleMpvCommand: IpcDepsRuntimeOptions['handleMpvCommand'];
   getKeybindings: IpcDepsRuntimeOptions['getKeybindings'];
+  getSessionBindings: IpcDepsRuntimeOptions['getSessionBindings'];
   getConfiguredShortcuts: IpcDepsRuntimeOptions['getConfiguredShortcuts'];
+  dispatchSessionAction: IpcDepsRuntimeOptions['dispatchSessionAction'];
   getStatsToggleKey: IpcDepsRuntimeOptions['getStatsToggleKey'];
   getMarkWatchedKey: IpcDepsRuntimeOptions['getMarkWatchedKey'];
   getControllerConfig: IpcDepsRuntimeOptions['getControllerConfig'];
@@ -178,6 +180,7 @@ export interface CliCommandRuntimeServiceDepsParams {
     hasMainWindow: CliCommandDepsRuntimeOptions['app']['hasMainWindow'];
     runYoutubePlaybackFlow: CliCommandDepsRuntimeOptions['app']['runYoutubePlaybackFlow'];
   };
+  dispatchSessionAction: CliCommandDepsRuntimeOptions['dispatchSessionAction'];
   ui: {
     openFirstRunSetup: CliCommandDepsRuntimeOptions['ui']['openFirstRunSetup'];
     openYomitanSettings: CliCommandDepsRuntimeOptions['ui']['openYomitanSettings'];
@@ -233,7 +236,9 @@ export function createMainIpcRuntimeServiceDeps(
     getMecabTokenizer: params.getMecabTokenizer,
     handleMpvCommand: params.handleMpvCommand,
     getKeybindings: params.getKeybindings,
+    getSessionBindings: params.getSessionBindings,
     getConfiguredShortcuts: params.getConfiguredShortcuts,
+    dispatchSessionAction: params.dispatchSessionAction,
     getStatsToggleKey: params.getStatsToggleKey,
     getMarkWatchedKey: params.getMarkWatchedKey,
     getControllerConfig: params.getControllerConfig,
@@ -347,6 +352,7 @@ export function createCliCommandRuntimeServiceDeps(
       hasMainWindow: params.app.hasMainWindow,
       runYoutubePlaybackFlow: params.app.runYoutubePlaybackFlow,
     },
+    dispatchSessionAction: params.dispatchSessionAction,
     ui: {
       openFirstRunSetup: params.ui.openFirstRunSetup,
       openYomitanSettings: params.ui.openYomitanSettings,

src/main/runtime/cli-command-context-deps.test.ts

@@ -42,6 +42,7 @@ test('build cli command context deps maps handlers and values', () => {
     markLastCardAsAudioCard: async () => {
       calls.push('mark');
     },
+    dispatchSessionAction: async () => {},
     getAnilistStatus: () => ({}) as never,
     clearAnilistToken: () => calls.push('clear-token'),
     openAnilistSetup: () => calls.push('anilist'),

src/main/runtime/cli-command-context-deps.ts

@@ -28,6 +28,7 @@ export function createBuildCliCommandContextDepsHandler(deps: {
   triggerFieldGrouping: () => Promise<void>;
   triggerSubsyncFromConfig: () => Promise<void>;
   markLastCardAsAudioCard: () => Promise<void>;
+  dispatchSessionAction: CliCommandContextFactoryDeps['dispatchSessionAction'];
   getAnilistStatus: CliCommandContextFactoryDeps['getAnilistStatus'];
   clearAnilistToken: CliCommandContextFactoryDeps['clearAnilistToken'];
   openAnilistSetup: CliCommandContextFactoryDeps['openAnilistSetup'];
@@ -77,6 +78,7 @@ export function createBuildCliCommandContextDepsHandler(deps: {
     triggerFieldGrouping: deps.triggerFieldGrouping,
     triggerSubsyncFromConfig: deps.triggerSubsyncFromConfig,
     markLastCardAsAudioCard: deps.markLastCardAsAudioCard,
+    dispatchSessionAction: deps.dispatchSessionAction,
     getAnilistStatus: deps.getAnilistStatus,
     clearAnilistToken: deps.clearAnilistToken,
     openAnilistSetup: deps.openAnilistSetup,

src/main/runtime/cli-command-context-factory.test.ts

@@ -37,6 +37,7 @@ test('cli command context factory composes main deps and context handlers', () =
     triggerFieldGrouping: async () => {},
     triggerSubsyncFromConfig: async () => {},
     markLastCardAsAudioCard: async () => {},
+    dispatchSessionAction: async () => {},
     getAnilistStatus: () => ({
       tokenStatus: 'resolved',
       tokenSource: 'literal',

src/main/runtime/cli-command-context-main-deps.test.ts

@@ -53,6 +53,7 @@ test('cli command context main deps builder maps state and callbacks', async ()
     markLastCardAsAudioCard: async () => {
       calls.push('mark-audio');
     },
+    dispatchSessionAction: async () => {},
 
     getAnilistStatus: () => ({
       tokenStatus: 'resolved',

src/main/runtime/cli-command-context-main-deps.ts

@@ -39,6 +39,7 @@ export function createBuildCliCommandContextMainDepsHandler(deps: {
   triggerFieldGrouping: () => Promise<void>;
   triggerSubsyncFromConfig: () => Promise<void>;
   markLastCardAsAudioCard: () => Promise<void>;
+  dispatchSessionAction: CliCommandContextFactoryDeps['dispatchSessionAction'];
 
   getAnilistStatus: CliCommandContextFactoryDeps['getAnilistStatus'];
   clearAnilistToken: () => void;
@@ -103,6 +104,7 @@ export function createBuildCliCommandContextMainDepsHandler(deps: {
     triggerFieldGrouping: () => deps.triggerFieldGrouping(),
     triggerSubsyncFromConfig: () => deps.triggerSubsyncFromConfig(),
     markLastCardAsAudioCard: () => deps.markLastCardAsAudioCard(),
+    dispatchSessionAction: (request) => deps.dispatchSessionAction(request),
     getAnilistStatus: () => deps.getAnilistStatus(),
     clearAnilistToken: () => deps.clearAnilistToken(),
     openAnilistSetup: () => deps.openAnilistSetupWindow(),

src/main/runtime/cli-command-context.test.ts

@@ -36,6 +36,7 @@ function createDeps() {
       triggerFieldGrouping: async () => {},
       triggerSubsyncFromConfig: async () => {},
       markLastCardAsAudioCard: async () => {},
+      dispatchSessionAction: async () => {},
       getAnilistStatus: () => ({}) as never,
       clearAnilistToken: () => {},
       openAnilistSetup: () => {},

src/main/runtime/cli-command-context.ts

@@ -33,6 +33,7 @@ export type CliCommandContextFactoryDeps = {
   triggerFieldGrouping: () => Promise<void>;
   triggerSubsyncFromConfig: () => Promise<void>;
   markLastCardAsAudioCard: () => Promise<void>;
+  dispatchSessionAction: CliCommandRuntimeServiceContext['dispatchSessionAction'];
   getAnilistStatus: CliCommandRuntimeServiceContext['getAnilistStatus'];
   clearAnilistToken: CliCommandRuntimeServiceContext['clearAnilistToken'];
   openAnilistSetup: CliCommandRuntimeServiceContext['openAnilistSetup'];
@@ -89,6 +90,7 @@ export function createCliCommandContext(
     triggerFieldGrouping: deps.triggerFieldGrouping,
     triggerSubsyncFromConfig: deps.triggerSubsyncFromConfig,
     markLastCardAsAudioCard: deps.markLastCardAsAudioCard,
+    dispatchSessionAction: deps.dispatchSessionAction,
     getAnilistStatus: deps.getAnilistStatus,
     clearAnilistToken: deps.clearAnilistToken,
     openAnilistSetup: deps.openAnilistSetup,

src/main/runtime/composers/cli-startup-composer.test.ts

@@ -30,6 +30,7 @@ test('composeCliStartupHandlers returns callable CLI startup handlers', () => {
       triggerFieldGrouping: async () => {},
       triggerSubsyncFromConfig: async () => {},
       markLastCardAsAudioCard: async () => {},
+      dispatchSessionAction: async () => {},
       getAnilistStatus: () => ({}) as never,
       clearAnilistToken: () => {},
       openAnilistSetupWindow: () => {},

src/main/runtime/composers/ipc-runtime-composer.test.ts

@@ -53,7 +53,9 @@ test('composeIpcRuntimeHandlers returns callable IPC handlers and registration b
         saveSubtitlePosition: () => {},
         getMecabTokenizer: () => null,
         getKeybindings: () => [],
+        getSessionBindings: () => [],
         getConfiguredShortcuts: () => ({}) as never,
+        dispatchSessionAction: async () => {},
         getStatsToggleKey: () => 'Backquote',
         getMarkWatchedKey: () => 'KeyW',
         getControllerConfig: () => ({}) as never,

src/main/runtime/config-hot-reload-handlers.test.ts

@@ -14,6 +14,7 @@ test('createConfigHotReloadAppliedHandler runs all hot-reload effects', () => {
 
   const applyHotReload = createConfigHotReloadAppliedHandler({
     setKeybindings: () => calls.push('set:keybindings'),
+    setSessionBindings: () => calls.push('set:session-bindings'),
     refreshGlobalAndOverlayShortcuts: () => calls.push('refresh:shortcuts'),
     setSecondarySubMode: (mode) => calls.push(`set:secondary:${mode}`),
     broadcastToOverlayWindows: (channel, payload) =>
@@ -37,6 +38,7 @@ test('createConfigHotReloadAppliedHandler runs all hot-reload effects', () => {
   );
 
   assert.ok(calls.includes('set:keybindings'));
+  assert.ok(calls.includes('set:session-bindings'));
   assert.ok(calls.includes('refresh:shortcuts'));
   assert.ok(calls.includes(`set:secondary:${config.secondarySub.defaultMode}`));
   assert.ok(calls.some((entry) => entry.startsWith('broadcast:secondary-subtitle:mode:')));
@@ -50,6 +52,7 @@ test('createConfigHotReloadAppliedHandler skips optional effects when no hot fie
 
   const applyHotReload = createConfigHotReloadAppliedHandler({
     setKeybindings: () => calls.push('set:keybindings'),
+    setSessionBindings: () => calls.push('set:session-bindings'),
     refreshGlobalAndOverlayShortcuts: () => calls.push('refresh:shortcuts'),
     setSecondarySubMode: () => calls.push('set:secondary'),
     broadcastToOverlayWindows: (channel) => calls.push(`broadcast:${channel}`),
@@ -64,7 +67,7 @@ test('createConfigHotReloadAppliedHandler skips optional effects when no hot fie
     config,
   );
 
-  assert.deepEqual(calls, ['set:keybindings']);
+  assert.deepEqual(calls, ['set:keybindings', 'set:session-bindings']);
 });
 
 test('createConfigHotReloadMessageHandler mirrors message to OSD and desktop notification', () => {

src/main/runtime/config-hot-reload-handlers.ts

@@ -1,10 +1,13 @@
 import type { ConfigHotReloadDiff } from '../../core/services/config-hot-reload';
+import { compileSessionBindings } from '../../core/services/session-bindings';
 import { resolveKeybindings } from '../../core/utils/keybindings';
-import { DEFAULT_KEYBINDINGS } from '../../config';
+import { resolveConfiguredShortcuts } from '../../core/utils/shortcut-config';
+import { DEFAULT_CONFIG, DEFAULT_KEYBINDINGS } from '../../config';
 import type { ConfigHotReloadPayload, ResolvedConfig, SecondarySubMode } from '../../types';
 
 type ConfigHotReloadAppliedDeps = {
   setKeybindings: (keybindings: ConfigHotReloadPayload['keybindings']) => void;
+  setSessionBindings: (sessionBindings: ConfigHotReloadPayload['sessionBindings']) => void;
   refreshGlobalAndOverlayShortcuts: () => void;
   setSecondarySubMode: (mode: SecondarySubMode) => void;
   broadcastToOverlayWindows: (channel: string, payload: unknown) => void;
@@ -33,8 +36,21 @@ export function resolveSubtitleStyleForRenderer(config: ResolvedConfig) {
 }
 
 export function buildConfigHotReloadPayload(config: ResolvedConfig): ConfigHotReloadPayload {
+  const keybindings = resolveKeybindings(config, DEFAULT_KEYBINDINGS);
+  const { bindings: sessionBindings } = compileSessionBindings({
+    keybindings,
+    shortcuts: resolveConfiguredShortcuts(config, DEFAULT_CONFIG),
+    platform:
+      process.platform === 'darwin'
+        ? 'darwin'
+        : process.platform === 'win32'
+          ? 'win32'
+          : 'linux',
+    rawConfig: config,
+  });
   return {
-    keybindings: resolveKeybindings(config, DEFAULT_KEYBINDINGS),
+    keybindings,
+    sessionBindings,
     subtitleStyle: resolveSubtitleStyleForRenderer(config),
     subtitleSidebar: config.subtitleSidebar,
     secondarySubMode: config.secondarySub.defaultMode,
@@ -45,6 +61,7 @@ export function createConfigHotReloadAppliedHandler(deps: ConfigHotReloadApplied
   return (diff: ConfigHotReloadDiff, config: ResolvedConfig): void => {
     const payload = buildConfigHotReloadPayload(config);
     deps.setKeybindings(payload.keybindings);
+    deps.setSessionBindings(payload.sessionBindings);
 
     if (diff.hotReloadFields.includes('shortcuts')) {
       deps.refreshGlobalAndOverlayShortcuts();

src/main/runtime/config-hot-reload-main-deps.test.ts

@@ -86,21 +86,25 @@ test('config hot reload message main deps builder maps notifications', () => {
 
 test('config hot reload applied main deps builder maps callbacks', () => {
   const calls: string[] = [];
-  const deps = createBuildConfigHotReloadAppliedMainDepsHandler({
+  const buildDeps = createBuildConfigHotReloadAppliedMainDepsHandler({
     setKeybindings: () => calls.push('keybindings'),
+    setSessionBindings: () => calls.push('session-bindings'),
     refreshGlobalAndOverlayShortcuts: () => calls.push('refresh-shortcuts'),
     setSecondarySubMode: () => calls.push('set-secondary'),
     broadcastToOverlayWindows: (channel) => calls.push(`broadcast:${channel}`),
     applyAnkiRuntimeConfigPatch: () => calls.push('apply-anki'),
-  })();
+  });
 
+  const deps = buildDeps();
   deps.setKeybindings([]);
+  deps.setSessionBindings([]);
   deps.refreshGlobalAndOverlayShortcuts();
   deps.setSecondarySubMode('hover');
   deps.broadcastToOverlayWindows('config:hot-reload', {});
   deps.applyAnkiRuntimeConfigPatch({ ai: true });
   assert.deepEqual(calls, [
     'keybindings',
+    'session-bindings',
     'refresh-shortcuts',
     'set-secondary',
     'broadcast:config:hot-reload',

src/main/runtime/config-hot-reload-main-deps.ts

@@ -62,6 +62,7 @@ export function createBuildConfigHotReloadMessageMainDepsHandler(
 
 export function createBuildConfigHotReloadAppliedMainDepsHandler(deps: {
   setKeybindings: (keybindings: ConfigHotReloadPayload['keybindings']) => void;
+  setSessionBindings: (sessionBindings: ConfigHotReloadPayload['sessionBindings']) => void;
   refreshGlobalAndOverlayShortcuts: () => void;
   setSecondarySubMode: (mode: SecondarySubMode) => void;
   broadcastToOverlayWindows: (channel: string, payload: unknown) => void;
@@ -72,6 +73,8 @@ export function createBuildConfigHotReloadAppliedMainDepsHandler(deps: {
   return () => ({
     setKeybindings: (keybindings: ConfigHotReloadPayload['keybindings']) =>
       deps.setKeybindings(keybindings),
+    setSessionBindings: (sessionBindings: ConfigHotReloadPayload['sessionBindings']) =>
+      deps.setSessionBindings(sessionBindings),
     refreshGlobalAndOverlayShortcuts: () => deps.refreshGlobalAndOverlayShortcuts(),
     setSecondarySubMode: (mode: SecondarySubMode) => deps.setSecondarySubMode(mode),
     broadcastToOverlayWindows: (channel: string, payload: unknown) =>

src/main/runtime/first-run-setup-service.test.ts

@@ -43,6 +43,13 @@ function makeArgs(overrides: Partial<CliArgs> = {}): CliArgs {
     triggerSubsync: false,
     markAudioCard: false,
     openRuntimeOptions: false,
+    openJimaku: false,
+    openYoutubePicker: false,
+    openPlaylistBrowser: false,
+    replayCurrentSubtitle: false,
+    playNextSubtitle: false,
+    shiftSubDelayPrevLine: false,
+    shiftSubDelayNextLine: false,
     anilistStatus: false,
     anilistLogout: false,
     anilistSetup: false,

src/main/runtime/session-bindings-artifact.ts

@@ -0,0 +1,17 @@
+import fs from 'node:fs';
+import path from 'node:path';
+import type { PluginSessionBindingsArtifact } from '../../types';
+
+export function getSessionBindingsArtifactPath(configDir: string): string {
+  return path.join(configDir, 'session-bindings.json');
+}
+
+export function writeSessionBindingsArtifact(
+  configDir: string,
+  artifact: PluginSessionBindingsArtifact,
+): string {
+  const artifactPath = getSessionBindingsArtifactPath(configDir);
+  fs.mkdirSync(configDir, { recursive: true });
+  fs.writeFileSync(artifactPath, `${JSON.stringify(artifact, null, 2)}\n`, 'utf8');
+  return artifactPath;
+}

src/main/state.ts

@@ -1,6 +1,7 @@
 import type { BrowserWindow, Extension, Session } from 'electron';
 
 import type {
+  CompiledSessionBinding,
   Keybinding,
   MpvSubtitleRenderMetrics,
   SecondarySubMode,
@@ -170,6 +171,7 @@ export interface AppState {
   anilistClientSecretState: AnilistSecretResolutionState;
   mecabTokenizer: MecabTokenizer | null;
   keybindings: Keybinding[];
+  sessionBindings: CompiledSessionBinding[];
   subtitleTimingTracker: SubtitleTimingTracker | null;
   immersionTracker: ImmersionTrackerService | null;
   ankiIntegration: AnkiIntegration | null;
@@ -252,6 +254,7 @@ export function createAppState(values: AppStateInitialValues): AppState {
     anilistClientSecretState: createInitialAnilistSecretResolutionState(),
     mecabTokenizer: null,
     keybindings: [],
+    sessionBindings: [],
     subtitleTimingTracker: null,
     immersionTracker: null,
     ankiIntegration: null,

src/preload.ts

@@ -223,8 +223,11 @@ const electronAPI: ElectronAPI = {
 
   getKeybindings: (): Promise<Keybinding[]> =>
     ipcRenderer.invoke(IPC_CHANNELS.request.getKeybindings),
+  getSessionBindings: () => ipcRenderer.invoke(IPC_CHANNELS.request.getSessionBindings),
   getConfiguredShortcuts: (): Promise<Required<ShortcutsConfig>> =>
     ipcRenderer.invoke(IPC_CHANNELS.request.getConfigShortcuts),
+  dispatchSessionAction: (actionId, payload) =>
+    ipcRenderer.invoke(IPC_CHANNELS.command.dispatchSessionAction, { actionId, payload }),
   getStatsToggleKey: (): Promise<string> =>
     ipcRenderer.invoke(IPC_CHANNELS.request.getStatsToggleKey),
   getMarkWatchedKey: (): Promise<string> =>

src/renderer/handlers/keyboard.test.ts

@@ -3,6 +3,7 @@ import test from 'node:test';
 
 import { createKeyboardHandlers } from './keyboard.js';
 import { createRendererState } from '../state.js';
+import type { CompiledSessionBinding } from '../../types';
 import { YOMITAN_POPUP_COMMAND_EVENT, YOMITAN_POPUP_HIDDEN_EVENT } from '../yomitan-popup.js';
 
 type CommandEventDetail = {
@@ -50,6 +51,8 @@ function installKeyboardTestGlobals() {
   const windowListeners = new Map<string, Array<(event: unknown) => void>>();
   const commandEvents: CommandEventDetail[] = [];
   const mpvCommands: Array<Array<string | number>> = [];
+  const sessionActions: Array<{ actionId: string; payload?: unknown }> = [];
+  let sessionBindings: CompiledSessionBinding[] = [];
   let playbackPausedResponse: boolean | null = false;
   let statsToggleKey = 'Backquote';
   let markWatchedKey = 'KeyW';
@@ -153,10 +156,14 @@ function installKeyboardTestGlobals() {
       },
       electronAPI: {
         getKeybindings: async () => [],
+        getSessionBindings: async () => sessionBindings,
         getConfiguredShortcuts: async () => configuredShortcuts,
         sendMpvCommand: (command: Array<string | number>) => {
           mpvCommands.push(command);
         },
+        dispatchSessionAction: async (actionId: string, payload?: unknown) => {
+          sessionActions.push({ actionId, payload });
+        },
         getPlaybackPaused: async () => playbackPausedResponse,
         getStatsToggleKey: async () => statsToggleKey,
         getMarkWatchedKey: async () => markWatchedKey,
@@ -273,6 +280,7 @@ function installKeyboardTestGlobals() {
   return {
     commandEvents,
     mpvCommands,
+    sessionActions,
     overlay,
     overlayFocusCalls,
     focusMainWindowCalls: () => focusMainWindowCalls,
@@ -292,6 +300,9 @@ function installKeyboardTestGlobals() {
     setConfiguredShortcuts: (value: typeof configuredShortcuts) => {
       configuredShortcuts = value;
     },
+    setSessionBindings: (value: CompiledSessionBinding[]) => {
+      sessionBindings = value;
+    },
     setMarkActiveVideoWatchedResult: (value: boolean) => {
       markActiveVideoWatchedResult = value;
     },
@@ -521,13 +532,19 @@ test('popup-visible mpv keybindings still fire for bound keys', async () => {
 
   try {
     await handlers.setupMpvInputForwarding();
-    handlers.updateKeybindings([
+    handlers.updateSessionBindings([
       {
-        key: 'Space',
+        sourcePath: 'keybindings[0].key',
+        originalKey: 'Space',
+        key: { code: 'Space', modifiers: [] },
+        actionType: 'mpv-command',
         command: ['cycle', 'pause'],
       },
       {
-        key: 'KeyQ',
+        sourcePath: 'keybindings[1].key',
+        originalKey: 'KeyQ',
+        key: { code: 'KeyQ', modifiers: [] },
+        actionType: 'mpv-command',
         command: ['quit'],
       },
     ] as never);
@@ -549,9 +566,12 @@ test('paused configured subtitle-jump keybinding re-applies pause after backward
 
   try {
     await handlers.setupMpvInputForwarding();
-    handlers.updateKeybindings([
+    handlers.updateSessionBindings([
       {
-        key: 'Shift+KeyH',
+        sourcePath: 'keybindings[0].key',
+        originalKey: 'Shift+KeyH',
+        key: { code: 'KeyH', modifiers: ['shift'] },
+        actionType: 'mpv-command',
         command: ['sub-seek', -1],
       },
     ] as never);
@@ -574,9 +594,12 @@ test('configured subtitle-jump keybinding preserves pause when pause state is un
 
   try {
     await handlers.setupMpvInputForwarding();
-    handlers.updateKeybindings([
+    handlers.updateSessionBindings([
       {
-        key: 'Shift+KeyH',
+        sourcePath: 'keybindings[0].key',
+        originalKey: 'Shift+KeyH',
+        key: { code: 'KeyH', modifiers: ['shift'] },
+        actionType: 'mpv-command',
         command: ['sub-seek', -1],
       },
     ] as never);
@@ -763,13 +786,19 @@ test('youtube picker: unhandled keys still dispatch mpv keybindings', async () =
 
   try {
     await handlers.setupMpvInputForwarding();
-    handlers.updateKeybindings([
+    handlers.updateSessionBindings([
       {
-        key: 'Space',
+        sourcePath: 'keybindings[0].key',
+        originalKey: 'Space',
+        key: { code: 'Space', modifiers: [] },
+        actionType: 'mpv-command',
         command: ['cycle', 'pause'],
       },
       {
-        key: 'KeyQ',
+        sourcePath: 'keybindings[1].key',
+        originalKey: 'KeyQ',
+        key: { code: 'KeyQ', modifiers: [] },
+        actionType: 'mpv-command',
         command: ['quit'],
       },
     ] as never);
@@ -785,46 +814,72 @@ test('youtube picker: unhandled keys still dispatch mpv keybindings', async () =
   }
 });
 
-test('linux overlay shortcut: Ctrl+Alt+S dispatches subsync special command locally', async () => {
-  const { ctx, handlers, testGlobals } = createKeyboardHandlerHarness();
+test('session binding: Ctrl+Alt+S dispatches subsync action locally', async () => {
+  const { handlers, testGlobals } = createKeyboardHandlerHarness();
 
   try {
-    ctx.platform.isLinuxPlatform = true;
     await handlers.setupMpvInputForwarding();
+    handlers.updateSessionBindings([
+      {
+        sourcePath: 'shortcuts.triggerSubsync',
+        originalKey: 'Ctrl+Alt+S',
+        key: { code: 'KeyS', modifiers: ['ctrl', 'alt'] },
+        actionType: 'session-action',
+        actionId: 'triggerSubsync',
+      },
+    ] as never);
 
     testGlobals.dispatchKeydown({ key: 's', code: 'KeyS', ctrlKey: true, altKey: true });
 
-    assert.deepEqual(testGlobals.mpvCommands, [['__subsync-trigger']]);
+    assert.deepEqual(testGlobals.sessionActions, [{ actionId: 'triggerSubsync', payload: undefined }]);
   } finally {
     testGlobals.restore();
   }
 });
 
-test('linux overlay shortcut: Ctrl+Shift+J dispatches jimaku special command locally', async () => {
-  const { ctx, handlers, testGlobals } = createKeyboardHandlerHarness();
+test('session binding: Ctrl+Shift+J dispatches jimaku action locally', async () => {
+  const { handlers, testGlobals } = createKeyboardHandlerHarness();
 
   try {
-    ctx.platform.isLinuxPlatform = true;
     await handlers.setupMpvInputForwarding();
+    handlers.updateSessionBindings([
+      {
+        sourcePath: 'shortcuts.openJimaku',
+        originalKey: 'Ctrl+Shift+J',
+        key: { code: 'KeyJ', modifiers: ['ctrl', 'shift'] },
+        actionType: 'session-action',
+        actionId: 'openJimaku',
+      },
+    ] as never);
 
     testGlobals.dispatchKeydown({ key: 'J', code: 'KeyJ', ctrlKey: true, shiftKey: true });
 
-    assert.deepEqual(testGlobals.mpvCommands, [['__jimaku-open']]);
+    assert.deepEqual(testGlobals.sessionActions, [{ actionId: 'openJimaku', payload: undefined }]);
   } finally {
     testGlobals.restore();
   }
 });
 
-test('linux overlay shortcut: CommandOrControl+Shift+O dispatches runtime options locally', async () => {
-  const { ctx, handlers, testGlobals } = createKeyboardHandlerHarness();
+test('session binding: Ctrl+Shift+O dispatches runtime options locally', async () => {
+  const { handlers, testGlobals } = createKeyboardHandlerHarness();
 
   try {
-    ctx.platform.isLinuxPlatform = true;
     await handlers.setupMpvInputForwarding();
+    handlers.updateSessionBindings([
+      {
+        sourcePath: 'shortcuts.openRuntimeOptions',
+        originalKey: 'CommandOrControl+Shift+O',
+        key: { code: 'KeyO', modifiers: ['ctrl', 'shift'] },
+        actionType: 'session-action',
+        actionId: 'openRuntimeOptions',
+      },
+    ] as never);
 
     testGlobals.dispatchKeydown({ key: 'O', code: 'KeyO', ctrlKey: true, shiftKey: true });
 
-    assert.deepEqual(testGlobals.mpvCommands, [['__runtime-options-open']]);
+    assert.deepEqual(testGlobals.sessionActions, [
+      { actionId: 'openRuntimeOptions', payload: undefined },
+    ]);
   } finally {
     testGlobals.restore();
   }

src/renderer/handlers/keyboard.ts

@@ -1,8 +1,6 @@
-import { SPECIAL_COMMANDS } from '../../config/definitions';
-import type { Keybinding, ShortcutsConfig } from '../../types';
+import type { CompiledSessionBinding, ShortcutsConfig } from '../../types';
 import type { RendererContext } from '../context';
 import {
-  YOMITAN_POPUP_HOST_SELECTOR,
   YOMITAN_POPUP_HIDDEN_EVENT,
   YOMITAN_POPUP_SHOWN_EVENT,
   YOMITAN_POPUP_COMMAND_EVENT,
@@ -37,11 +35,16 @@ export function createKeyboardHandlers(
   // Timeout for the modal chord capture window (e.g. Y followed by H/K).
   const CHORD_TIMEOUT_MS = 1000;
   const KEYBOARD_SELECTED_WORD_CLASS = 'keyboard-selected';
-  const linuxOverlayShortcutCommands = new Map<string, (string | number)[]>();
   let pendingSelectionAnchorAfterSubtitleSeek: 'start' | 'end' | null = null;
   let pendingLookupRefreshAfterSubtitleSeek = false;
   let resetSelectionToStartOnNextSubtitleSync = false;
   let lookupScanFallbackTimer: ReturnType<typeof setTimeout> | null = null;
+  let pendingNumericSelection:
+    | {
+        actionId: 'copySubtitleMultiple' | 'mineSentenceMultiple';
+        timeout: ReturnType<typeof setTimeout> | null;
+      }
+    | null = null;
 
   const CHORD_MAP = new Map<
     string,
@@ -62,9 +65,6 @@ export function createKeyboardHandlers(
     if (target.closest('.modal')) return true;
     if (ctx.dom.subtitleContainer.contains(target)) return true;
     if (isYomitanPopupIframe(target)) return true;
-    if (target.closest && target.closest(YOMITAN_POPUP_HOST_SELECTOR)) {
-      return true;
-    }
     if (target.closest && target.closest('iframe.yomitan-popup, iframe[id^="yomitan-popup"]'))
       return true;
     return false;
@@ -80,115 +80,117 @@ export function createKeyboardHandlers(
     return parts.join('+');
   }
 
-  function acceleratorToKeyToken(token: string): string | null {
-    const normalized = token.trim();
-    if (!normalized) return null;
-    if (/^[a-z]$/i.test(normalized)) {
-      return `Key${normalized.toUpperCase()}`;
-    }
-    if (/^[0-9]$/.test(normalized)) {
-      return `Digit${normalized}`;
-    }
-    const exactMap: Record<string, string> = {
-      space: 'Space',
-      tab: 'Tab',
-      enter: 'Enter',
-      return: 'Enter',
-      esc: 'Escape',
-      escape: 'Escape',
-      up: 'ArrowUp',
-      down: 'ArrowDown',
-      left: 'ArrowLeft',
-      right: 'ArrowRight',
-      backspace: 'Backspace',
-      delete: 'Delete',
-      slash: 'Slash',
-      backslash: 'Backslash',
-      minus: 'Minus',
-      plus: 'Equal',
-      equal: 'Equal',
-      comma: 'Comma',
-      period: 'Period',
-      quote: 'Quote',
-      semicolon: 'Semicolon',
-      bracketleft: 'BracketLeft',
-      bracketright: 'BracketRight',
-      backquote: 'Backquote',
-    };
-    const lower = normalized.toLowerCase();
-    if (exactMap[lower]) return exactMap[lower];
-    if (/^key[a-z]$/i.test(normalized) || /^digit[0-9]$/i.test(normalized)) {
-      return normalized[0]!.toUpperCase() + normalized.slice(1);
-    }
-    if (/^arrow(?:up|down|left|right)$/i.test(normalized)) {
-      return normalized[0]!.toUpperCase() + normalized.slice(1);
-    }
-    if (/^f\d{1,2}$/i.test(normalized)) {
-      return normalized.toUpperCase();
-    }
-    return null;
-  }
-
-  function acceleratorToKeyString(accelerator: string): string | null {
-    const normalized = accelerator.replace(/\s+/g, '').replace(/cmdorctrl/gi, 'CommandOrControl');
-    if (!normalized) return null;
-    const parts = normalized.split('+').filter(Boolean);
-    const keyToken = parts.pop();
-    if (!keyToken) return null;
-
-    const eventParts: string[] = [];
-    for (const modifier of parts) {
-      const lower = modifier.toLowerCase();
-      if (lower === 'ctrl' || lower === 'control') {
-        eventParts.push('Ctrl');
-        continue;
-      }
-      if (lower === 'alt' || lower === 'option') {
-        eventParts.push('Alt');
-        continue;
-      }
-      if (lower === 'shift') {
-        eventParts.push('Shift');
-        continue;
-      }
-      if (lower === 'meta' || lower === 'super' || lower === 'command' || lower === 'cmd') {
-        eventParts.push('Meta');
-        continue;
-      }
-      if (lower === 'commandorcontrol') {
-        eventParts.push(ctx.platform.isMacOSPlatform ? 'Meta' : 'Ctrl');
-        continue;
-      }
-      return null;
-    }
-
-    const normalizedKey = acceleratorToKeyToken(keyToken);
-    if (!normalizedKey) return null;
-    eventParts.push(normalizedKey);
-    return eventParts.join('+');
-  }
-
   function updateConfiguredShortcuts(shortcuts: Required<ShortcutsConfig>): void {
-    linuxOverlayShortcutCommands.clear();
-    const bindings: Array<[string | null, (string | number)[]]> = [
-      [shortcuts.triggerSubsync, [SPECIAL_COMMANDS.SUBSYNC_TRIGGER]],
-      [shortcuts.openRuntimeOptions, [SPECIAL_COMMANDS.RUNTIME_OPTIONS_OPEN]],
-      [shortcuts.openJimaku, [SPECIAL_COMMANDS.JIMAKU_OPEN]],
-    ];
-
-    for (const [accelerator, command] of bindings) {
-      if (!accelerator) continue;
-      const keyString = acceleratorToKeyString(accelerator);
-      if (keyString) {
-        linuxOverlayShortcutCommands.set(keyString, command);
-      }
-    }
+    ctx.state.sessionActionTimeoutMs = shortcuts.multiCopyTimeoutMs;
   }
 
   async function refreshConfiguredShortcuts(): Promise<void> {
     updateConfiguredShortcuts(await window.electronAPI.getConfiguredShortcuts());
   }
 
+  function updateSessionBindings(bindings: CompiledSessionBinding[]): void {
+    ctx.state.sessionBindings = bindings;
+    ctx.state.sessionBindingMap = new Map(
+      bindings.map((binding) => [keyEventToStringFromBinding(binding), binding]),
+    );
+  }
+
+  function keyEventToStringFromBinding(binding: CompiledSessionBinding): string {
+    const parts: string[] = [];
+    for (const modifier of binding.key.modifiers) {
+      if (modifier === 'ctrl') parts.push('Ctrl');
+      else if (modifier === 'alt') parts.push('Alt');
+      else if (modifier === 'shift') parts.push('Shift');
+      else if (modifier === 'meta') parts.push('Meta');
+    }
+    parts.push(binding.key.code);
+    return parts.join('+');
+  }
+
+  function isTextEntryTarget(target: EventTarget | null): boolean {
+    if (!target || typeof target !== 'object' || !('closest' in target)) return false;
+    const element = target as { closest: (selector: string) => unknown };
+    if (element.closest('[contenteditable="true"]')) return true;
+    return Boolean(element.closest('input, textarea, select'));
+  }
+
+  function showSessionSelectionMessage(message: string): void {
+    window.electronAPI.sendMpvCommand(['show-text', message, '3000']);
+  }
+
+  function cancelPendingNumericSelection(showCancelled: boolean): void {
+    if (!pendingNumericSelection) return;
+    if (pendingNumericSelection.timeout !== null) {
+      clearTimeout(pendingNumericSelection.timeout);
+    }
+    pendingNumericSelection = null;
+    if (showCancelled) {
+      showSessionSelectionMessage('Cancelled');
+    }
+  }
+
+  function startPendingNumericSelection(
+    actionId: 'copySubtitleMultiple' | 'mineSentenceMultiple',
+  ): void {
+    cancelPendingNumericSelection(false);
+    const timeoutMessage = actionId === 'copySubtitleMultiple' ? 'Copy timeout' : 'Mine timeout';
+    const promptMessage =
+      actionId === 'copySubtitleMultiple'
+        ? 'Copy how many lines? Press 1-9 (Esc to cancel)'
+        : 'Mine how many lines? Press 1-9 (Esc to cancel)';
+    pendingNumericSelection = {
+      actionId,
+      timeout: setTimeout(() => {
+        pendingNumericSelection = null;
+        showSessionSelectionMessage(timeoutMessage);
+      }, ctx.state.sessionActionTimeoutMs),
+    };
+    showSessionSelectionMessage(promptMessage);
+  }
+
+  function beginSessionNumericSelection(
+    actionId: 'copySubtitleMultiple' | 'mineSentenceMultiple',
+  ): void {
+    startPendingNumericSelection(actionId);
+  }
+
+  function handlePendingNumericSelection(e: KeyboardEvent): boolean {
+    if (!pendingNumericSelection) return false;
+    if (e.key === 'Escape') {
+      e.preventDefault();
+      cancelPendingNumericSelection(true);
+      return true;
+    }
+
+    if (!/^[1-9]$/.test(e.key) || e.ctrlKey || e.metaKey || e.altKey) {
+      return false;
+    }
+
+    e.preventDefault();
+    const count = Number(e.key);
+    const actionId = pendingNumericSelection.actionId;
+    cancelPendingNumericSelection(false);
+    void window.electronAPI.dispatchSessionAction(actionId, { count });
+    return true;
+  }
+
+  function dispatchSessionBinding(binding: CompiledSessionBinding): void {
+    if (
+      binding.actionType === 'session-action' &&
+      (binding.actionId === 'copySubtitleMultiple' || binding.actionId === 'mineSentenceMultiple')
+    ) {
+      startPendingNumericSelection(binding.actionId);
+      return;
+    }
+
+    if (binding.actionType === 'mpv-command') {
+      dispatchConfiguredMpvCommand(binding.command);
+      return;
+    }
+
+    void window.electronAPI.dispatchSessionAction(binding.actionId, binding.payload);
+  }
+
   function dispatchYomitanPopupKeydown(
     key: string,
     code: string,
@@ -512,7 +514,7 @@ export function createKeyboardHandlers(
     clientY: number,
     modifiers: ScanModifierState = {},
   ): void {
-    if (typeof PointerEvent !== 'undefined') {
+    if (typeof PointerEvent === 'function') {
       const pointerEventInit = {
         bubbles: true,
         cancelable: true,
@@ -535,23 +537,25 @@ export function createKeyboardHandlers(
       target.dispatchEvent(new PointerEvent('pointerup', pointerEventInit));
     }
 
-    const mouseEventInit = {
-      bubbles: true,
-      cancelable: true,
-      composed: true,
-      clientX,
-      clientY,
-      button: 0,
-      buttons: 0,
-      shiftKey: modifiers.shiftKey ?? false,
-      ctrlKey: modifiers.ctrlKey ?? false,
-      altKey: modifiers.altKey ?? false,
-      metaKey: modifiers.metaKey ?? false,
-    } satisfies MouseEventInit;
-    target.dispatchEvent(new MouseEvent('mousemove', mouseEventInit));
-    target.dispatchEvent(new MouseEvent('mousedown', { ...mouseEventInit, buttons: 1 }));
-    target.dispatchEvent(new MouseEvent('mouseup', mouseEventInit));
-    target.dispatchEvent(new MouseEvent('click', mouseEventInit));
+    if (typeof MouseEvent === 'function') {
+      const mouseEventInit = {
+        bubbles: true,
+        cancelable: true,
+        composed: true,
+        clientX,
+        clientY,
+        button: 0,
+        buttons: 0,
+        shiftKey: modifiers.shiftKey ?? false,
+        ctrlKey: modifiers.ctrlKey ?? false,
+        altKey: modifiers.altKey ?? false,
+        metaKey: modifiers.metaKey ?? false,
+      } satisfies MouseEventInit;
+      target.dispatchEvent(new MouseEvent('mousemove', mouseEventInit));
+      target.dispatchEvent(new MouseEvent('mousedown', { ...mouseEventInit, buttons: 1 }));
+      target.dispatchEvent(new MouseEvent('mouseup', mouseEventInit));
+      target.dispatchEvent(new MouseEvent('click', mouseEventInit));
+    }
   }
 
   function emitLookupScanFallback(target: Element, clientX: number, clientY: number): void {
@@ -824,7 +828,7 @@ export function createKeyboardHandlers(
     if (modifierOnlyCodes.has(e.code)) return false;
 
     const keyString = keyEventToString(e);
-    if (ctx.state.keybindingsMap.has(keyString)) {
+    if (ctx.state.sessionBindingMap.has(keyString)) {
       return false;
     }
 
@@ -850,7 +854,7 @@ export function createKeyboardHandlers(
     fallbackUnavailable: boolean;
   } {
     const firstChoice = 'KeyH';
-    if (!ctx.state.keybindingsMap.has('KeyH')) {
+    if (!ctx.state.sessionBindingMap.has('KeyH')) {
       return {
         bindingKey: firstChoice,
         fallbackUsed: false,
@@ -858,18 +862,18 @@ export function createKeyboardHandlers(
       };
     }
 
-    if (ctx.state.keybindingsMap.has('KeyK')) {
+    if (!ctx.state.sessionBindingMap.has('KeyK')) {
       return {
         bindingKey: 'KeyK',
         fallbackUsed: true,
-        fallbackUnavailable: true,
+        fallbackUnavailable: false,
       };
     }
 
     return {
       bindingKey: 'KeyK',
       fallbackUsed: true,
-      fallbackUnavailable: false,
+      fallbackUnavailable: true,
     };
   }
 
@@ -894,13 +898,13 @@ export function createKeyboardHandlers(
   }
 
   async function setupMpvInputForwarding(): Promise<void> {
-    const [keybindings, shortcuts, statsToggleKey, markWatchedKey] = await Promise.all([
-      window.electronAPI.getKeybindings(),
+    const [sessionBindings, shortcuts, statsToggleKey, markWatchedKey] = await Promise.all([
+      window.electronAPI.getSessionBindings(),
       window.electronAPI.getConfiguredShortcuts(),
       window.electronAPI.getStatsToggleKey(),
       window.electronAPI.getMarkWatchedKey(),
     ]);
-    updateKeybindings(keybindings);
+    updateSessionBindings(sessionBindings);
     updateConfiguredShortcuts(shortcuts);
     ctx.state.statsToggleKey = statsToggleKey;
     ctx.state.markWatchedKey = markWatchedKey;
@@ -1010,6 +1014,14 @@ export function createKeyboardHandlers(
         return;
       }
 
+      if (isTextEntryTarget(e.target)) {
+        return;
+      }
+
+      if (handlePendingNumericSelection(e)) {
+        return;
+      }
+
       if (isStatsOverlayToggle(e)) {
         e.preventDefault();
         window.electronAPI.toggleStatsOverlay();
@@ -1099,19 +1111,10 @@ export function createKeyboardHandlers(
       }
 
       const keyString = keyEventToString(e);
-      const linuxOverlayCommand = ctx.platform.isLinuxPlatform
-        ? linuxOverlayShortcutCommands.get(keyString)
-        : undefined;
-      if (linuxOverlayCommand) {
+      const binding = ctx.state.sessionBindingMap.get(keyString);
+      if (binding) {
         e.preventDefault();
-        dispatchConfiguredMpvCommand(linuxOverlayCommand);
-        return;
-      }
-      const command = ctx.state.keybindingsMap.get(keyString);
-
-      if (command) {
-        e.preventDefault();
-        dispatchConfiguredMpvCommand(command);
+        dispatchSessionBinding(binding);
       }
     });
 
@@ -1129,19 +1132,11 @@ export function createKeyboardHandlers(
     });
   }
 
-  function updateKeybindings(keybindings: Keybinding[]): void {
-    ctx.state.keybindingsMap = new Map();
-    for (const binding of keybindings) {
-      if (binding.command) {
-        ctx.state.keybindingsMap.set(binding.key, binding.command);
-      }
-    }
-  }
-
   return {
+    beginSessionNumericSelection,
     setupMpvInputForwarding,
     refreshConfiguredShortcuts,
-    updateKeybindings,
+    updateSessionBindings,
     syncKeyboardTokenSelection,
     handleSubtitleContentUpdated,
     handleKeyboardModeToggleRequested,

src/renderer/renderer.ts

@@ -628,7 +628,7 @@ async function init(): Promise<void> {
   });
   window.electronAPI.onConfigHotReload((payload: ConfigHotReloadPayload) => {
     runGuarded('config:hot-reload', () => {
-      keyboardHandlers.updateKeybindings(payload.keybindings);
+      keyboardHandlers.updateSessionBindings(payload.sessionBindings);
       void keyboardHandlers.refreshConfiguredShortcuts();
       subtitleRenderer.applySubtitleStyle(payload.subtitleStyle);
       subtitleRenderer.updateSecondarySubMode(payload.secondarySubMode);

src/renderer/state.ts

@@ -1,4 +1,5 @@
 import type {
+  CompiledSessionBinding,
   PlaylistBrowserSnapshot,
   ControllerButtonSnapshot,
   ControllerDeviceInfo,
@@ -116,7 +117,9 @@ export type RendererState = {
   frequencyDictionaryBand4Color: string;
   frequencyDictionaryBand5Color: string;
 
-  keybindingsMap: Map<string, (string | number)[]>;
+  sessionBindings: CompiledSessionBinding[];
+  sessionBindingMap: Map<string, CompiledSessionBinding>;
+  sessionActionTimeoutMs: number;
   statsToggleKey: string;
   markWatchedKey: string;
   chordPending: boolean;
@@ -219,7 +222,9 @@ export function createRendererState(): RendererState {
     frequencyDictionaryBand4Color: '#8bd5ca',
     frequencyDictionaryBand5Color: '#8aadf4',
 
-    keybindingsMap: new Map(),
+    sessionBindings: [],
+    sessionBindingMap: new Map(),
+    sessionActionTimeoutMs: 3000,
     statsToggleKey: 'Backquote',
     markWatchedKey: 'KeyW',
     chordPending: false,

src/renderer/yomitan-popup.test.ts

@@ -1,6 +1,11 @@
 import test from 'node:test';
 import assert from 'node:assert/strict';
-import { YOMITAN_LOOKUP_EVENT, registerYomitanLookupListener } from './yomitan-popup.js';
+import {
+  YOMITAN_LOOKUP_EVENT,
+  YOMITAN_POPUP_VISIBLE_HOST_SELECTOR,
+  isYomitanPopupVisible,
+  registerYomitanLookupListener,
+} from './yomitan-popup.js';
 
 test('registerYomitanLookupListener forwards the SubMiner Yomitan lookup event', () => {
   const target = new EventTarget();
@@ -16,3 +21,12 @@ test('registerYomitanLookupListener forwards the SubMiner Yomitan lookup event',
 
   assert.deepEqual(calls, ['lookup']);
 });
+
+test('isYomitanPopupVisible falls back to querySelector when querySelectorAll is unavailable', () => {
+  const root = {
+    querySelector: (selector: string) =>
+      selector === YOMITAN_POPUP_VISIBLE_HOST_SELECTOR ? ({} as Element) : null,
+  } as ParentNode;
+
+  assert.equal(isYomitanPopupVisible(root), true);
+});

src/renderer/yomitan-popup.ts

@@ -32,9 +32,9 @@ export function isYomitanPopupIframe(element: Element | null): boolean {
   return hasModernPopupClass || hasLegacyPopupId;
 }
 
-export function hasYomitanPopupIframe(root: ParentNode = document): boolean {
+export function hasYomitanPopupIframe(root: ParentNode | null | undefined = document): boolean {
   return (
-    typeof root.querySelector === 'function' &&
+    typeof root?.querySelector === 'function' &&
     (root.querySelector(YOMITAN_POPUP_IFRAME_SELECTOR) !== null ||
       root.querySelector(YOMITAN_POPUP_HOST_SELECTOR) !== null)
   );
@@ -58,14 +58,21 @@ function isMarkedVisiblePopupHost(element: Element): boolean {
   return element.getAttribute(YOMITAN_POPUP_VISIBLE_ATTRIBUTE) === 'true';
 }
 
-function queryPopupElements<T extends Element>(root: ParentNode, selector: string): T[] {
-  if (typeof root.querySelectorAll !== 'function') {
-    return [];
+function queryPopupElements<T extends Element>(
+  root: ParentNode | null | undefined,
+  selector: string,
+): T[] {
+  if (typeof root?.querySelectorAll === 'function') {
+    return Array.from(root.querySelectorAll<T>(selector));
   }
-  return Array.from(root.querySelectorAll<T>(selector));
+  if (typeof root?.querySelector === 'function') {
+    const first = root.querySelector(selector) as T | null;
+    return first ? [first] : [];
+  }
+  return [];
 }
 
-export function isYomitanPopupVisible(root: ParentNode = document): boolean {
+export function isYomitanPopupVisible(root: ParentNode | null | undefined = document): boolean {
   const visiblePopupHosts = queryPopupElements<HTMLElement>(root, YOMITAN_POPUP_VISIBLE_HOST_SELECTOR);
   if (visiblePopupHosts.length > 0) {
     return true;

src/shared/ipc/contracts.ts

@@ -37,6 +37,7 @@ export const IPC_CHANNELS = {
     overlayModalOpened: 'overlay:modal-opened',
     toggleStatsOverlay: 'stats:toggle-overlay',
     markActiveVideoWatched: 'immersion:mark-active-video-watched',
+    dispatchSessionAction: 'session-action:dispatch',
   },
   request: {
     getVisibleOverlayVisibility: 'get-visible-overlay-visibility',
@@ -49,6 +50,7 @@ export const IPC_CHANNELS = {
     getSubtitleStyle: 'get-subtitle-style',
     getMecabStatus: 'get-mecab-status',
     getKeybindings: 'get-keybindings',
+    getSessionBindings: 'get-session-bindings',
     getConfigShortcuts: 'get-config-shortcuts',
     getStatsToggleKey: 'get-stats-toggle-key',
     getMarkWatchedKey: 'get-mark-watched-key',

src/types.ts

@@ -3,4 +3,5 @@ export * from './types/config';
 export * from './types/integrations';
 export * from './types/runtime';
 export * from './types/runtime-options';
+export * from './types/session-bindings';
 export * from './types/subtitle';

src/types/runtime.ts

@@ -5,6 +5,11 @@ import type {
   KikuMergePreviewResponse,
 } from './anki';
 import type { ResolvedConfig, ShortcutsConfig } from './config';
+import type {
+  CompiledSessionBinding,
+  SessionActionId,
+  SessionActionPayload,
+} from './session-bindings';
 import type {
   JimakuApiResponse,
   JimakuDownloadQuery,
@@ -321,11 +326,17 @@ export interface ClipboardAppendResult {
 
 export interface ConfigHotReloadPayload {
   keybindings: Keybinding[];
+  sessionBindings: CompiledSessionBinding[];
   subtitleStyle: SubtitleStyleConfig | null;
   subtitleSidebar: Required<SubtitleSidebarConfig>;
   secondarySubMode: SecondarySubMode;
 }
 
+export interface SessionActionDispatchRequest {
+  actionId: SessionActionId;
+  payload?: SessionActionPayload;
+}
+
 export type ResolvedControllerConfig = ResolvedConfig['controller'];
 
 export interface ElectronAPI {
@@ -349,7 +360,9 @@ export interface ElectronAPI {
   setMecabEnabled: (enabled: boolean) => void;
   sendMpvCommand: (command: (string | number)[]) => void;
   getKeybindings: () => Promise<Keybinding[]>;
+  getSessionBindings: () => Promise<CompiledSessionBinding[]>;
   getConfiguredShortcuts: () => Promise<Required<ShortcutsConfig>>;
+  dispatchSessionAction: (actionId: SessionActionId, payload?: SessionActionPayload) => Promise<void>;
   getStatsToggleKey: () => Promise<string>;
   getMarkWatchedKey: () => Promise<string>;
   markActiveVideoWatched: () => Promise<boolean>;

src/types/session-bindings.ts

@@ -0,0 +1,71 @@
+export type SessionKeyModifier = 'ctrl' | 'alt' | 'shift' | 'meta';
+
+export type SessionActionId =
+  | 'toggleStatsOverlay'
+  | 'toggleVisibleOverlay'
+  | 'copySubtitle'
+  | 'copySubtitleMultiple'
+  | 'updateLastCardFromClipboard'
+  | 'triggerFieldGrouping'
+  | 'triggerSubsync'
+  | 'mineSentence'
+  | 'mineSentenceMultiple'
+  | 'toggleSecondarySub'
+  | 'markAudioCard'
+  | 'openRuntimeOptions'
+  | 'openJimaku'
+  | 'openYoutubePicker'
+  | 'openPlaylistBrowser'
+  | 'replayCurrentSubtitle'
+  | 'playNextSubtitle'
+  | 'shiftSubDelayPrevLine'
+  | 'shiftSubDelayNextLine'
+  | 'cycleRuntimeOption';
+
+export interface SessionKeySpec {
+  code: string;
+  modifiers: SessionKeyModifier[];
+}
+
+export interface SessionBindingWarning {
+  kind: 'unsupported' | 'conflict' | 'deprecated-config';
+  path: string;
+  message: string;
+  value: unknown;
+  conflictingPaths?: string[];
+}
+
+export interface SessionActionPayload {
+  count?: number;
+  runtimeOptionId?: string;
+  direction?: 1 | -1;
+}
+
+type CompiledSessionBindingBase = {
+  sourcePath: string;
+  originalKey: string;
+  key: SessionKeySpec;
+};
+
+export interface CompiledMpvCommandBinding extends CompiledSessionBindingBase {
+  actionType: 'mpv-command';
+  command: (string | number)[];
+}
+
+export interface CompiledSessionActionBinding extends CompiledSessionBindingBase {
+  actionType: 'session-action';
+  actionId: SessionActionId;
+  payload?: SessionActionPayload;
+}
+
+export type CompiledSessionBinding =
+  | CompiledMpvCommandBinding
+  | CompiledSessionActionBinding;
+
+export interface PluginSessionBindingsArtifact {
+  version: 1;
+  generatedAt: string;
+  numericSelectionTimeoutMs: number;
+  bindings: CompiledSessionBinding[];
+  warnings: SessionBindingWarning[];
+}

src/window-trackers/win32.ts

@@ -48,6 +48,8 @@ const OpenProcess = kernel32.func(
   'intptr __stdcall OpenProcess(uint dwDesiredAccess, bool bInheritHandle, uint dwProcessId)',
 );
 const CloseHandle = kernel32.func('bool __stdcall CloseHandle(intptr hObject)');
+const GetLastError = kernel32.func('uint __stdcall GetLastError()');
+const SetLastError = kernel32.func('void __stdcall SetLastError(uint dwErrCode)');
 const QueryFullProcessImageNameW = kernel32.func(
   'bool __stdcall QueryFullProcessImageNameW(intptr hProcess, uint dwFlags, _Out_ uint16 *lpExeName, _Inout_ uint *lpdwSize)',
 );
@@ -69,12 +71,47 @@ const HWND_TOPMOST = -1;
 const HWND_NOTOPMOST = -2;
 
 function extendOverlayFrameIntoClientArea(overlayHwnd: number): void {
-  DwmExtendFrameIntoClientArea(overlayHwnd, {
+  const hr = DwmExtendFrameIntoClientArea(overlayHwnd, {
     cxLeftWidth: -1,
     cxRightWidth: -1,
     cyTopHeight: -1,
     cyBottomHeight: -1,
   });
+  if (hr !== 0) {
+    throw new Error(`DwmExtendFrameIntoClientArea failed (${hr})`);
+  }
+}
+
+function resetLastError(): void {
+  SetLastError(0);
+}
+
+function assertSetWindowLongPtrSucceeded(operation: string, result: number): void {
+  if (result !== 0) {
+    return;
+  }
+
+  if (GetLastError() === 0) {
+    return;
+  }
+
+  throw new Error(`${operation} failed (${GetLastError()})`);
+}
+
+function assertSetWindowPosSucceeded(operation: string, result: boolean): void {
+  if (result) {
+    return;
+  }
+
+  throw new Error(`${operation} failed (${GetLastError()})`);
+}
+
+function assertGetWindowLongSucceeded(operation: string, result: number): number {
+  if (result !== 0 || GetLastError() === 0) {
+    return result;
+  }
+
+  throw new Error(`${operation} failed (${GetLastError()})`);
 }
 
 export interface WindowBounds {
@@ -203,7 +240,9 @@ export function getForegroundProcessName(): string | null {
 }
 
 export function setOverlayOwner(overlayHwnd: number, mpvHwnd: number): void {
-  SetWindowLongPtrW(overlayHwnd, GWLP_HWNDPARENT, mpvHwnd);
+  resetLastError();
+  const result = SetWindowLongPtrW(overlayHwnd, GWLP_HWNDPARENT, mpvHwnd);
+  assertSetWindowLongPtrSucceeded('setOverlayOwner', result);
   extendOverlayFrameIntoClientArea(overlayHwnd);
 }
 
@@ -212,21 +251,38 @@ export function ensureOverlayTransparency(overlayHwnd: number): void {
 }
 
 export function clearOverlayOwner(overlayHwnd: number): void {
-  SetWindowLongPtrW(overlayHwnd, GWLP_HWNDPARENT, 0);
+  resetLastError();
+  const result = SetWindowLongPtrW(overlayHwnd, GWLP_HWNDPARENT, 0);
+  assertSetWindowLongPtrSucceeded('clearOverlayOwner', result);
 }
 
 export function bindOverlayAboveMpv(overlayHwnd: number, mpvHwnd: number): void {
-  SetWindowLongPtrW(overlayHwnd, GWLP_HWNDPARENT, mpvHwnd);
-  const mpvExStyle = GetWindowLongW(mpvHwnd, GWL_EXSTYLE);
+  resetLastError();
+  const ownerResult = SetWindowLongPtrW(overlayHwnd, GWLP_HWNDPARENT, mpvHwnd);
+  assertSetWindowLongPtrSucceeded('bindOverlayAboveMpv owner assignment', ownerResult);
+
+  resetLastError();
+  const mpvExStyle = assertGetWindowLongSucceeded(
+    'bindOverlayAboveMpv target window style',
+    GetWindowLongW(mpvHwnd, GWL_EXSTYLE),
+  );
   const mpvIsTopmost = (mpvExStyle & WS_EX_TOPMOST) !== 0;
 
-  const overlayExStyle = GetWindowLongW(overlayHwnd, GWL_EXSTYLE);
+  resetLastError();
+  const overlayExStyle = assertGetWindowLongSucceeded(
+    'bindOverlayAboveMpv overlay window style',
+    GetWindowLongW(overlayHwnd, GWL_EXSTYLE),
+  );
   const overlayIsTopmost = (overlayExStyle & WS_EX_TOPMOST) !== 0;
 
   if (mpvIsTopmost && !overlayIsTopmost) {
-    SetWindowPos(overlayHwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_FLAGS);
+    resetLastError();
+    const topmostResult = SetWindowPos(overlayHwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_FLAGS);
+    assertSetWindowPosSucceeded('bindOverlayAboveMpv topmost adjustment', topmostResult);
   } else if (!mpvIsTopmost && overlayIsTopmost) {
-    SetWindowPos(overlayHwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_FLAGS);
+    resetLastError();
+    const notTopmostResult = SetWindowPos(overlayHwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_FLAGS);
+    assertSetWindowPosSucceeded('bindOverlayAboveMpv notopmost adjustment', notTopmostResult);
   }
 
   const windowAboveMpv = GetWindowFn(mpvHwnd, GW_HWNDPREV);
@@ -241,10 +297,17 @@ export function bindOverlayAboveMpv(overlayHwnd: number, mpvHwnd: number): void
     }
   }
 
-  SetWindowPos(overlayHwnd, insertAfter, 0, 0, 0, 0, SWP_FLAGS);
+  resetLastError();
+  const positionResult = SetWindowPos(overlayHwnd, insertAfter, 0, 0, 0, 0, SWP_FLAGS);
+  assertSetWindowPosSucceeded('bindOverlayAboveMpv z-order adjustment', positionResult);
 }
 
 export function lowerOverlay(overlayHwnd: number): void {
-  SetWindowPos(overlayHwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_FLAGS);
-  SetWindowPos(overlayHwnd, HWND_BOTTOM, 0, 0, 0, 0, SWP_FLAGS);
+  resetLastError();
+  const notTopmostResult = SetWindowPos(overlayHwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_FLAGS);
+  assertSetWindowPosSucceeded('lowerOverlay notopmost adjustment', notTopmostResult);
+
+  resetLastError();
+  const bottomResult = SetWindowPos(overlayHwnd, HWND_BOTTOM, 0, 0, 0, 0, SWP_FLAGS);
+  assertSetWindowPosSucceeded('lowerOverlay bottom adjustment', bottomResult);
 }

src/window-trackers/windows-helper.test.ts

@@ -7,6 +7,8 @@ import {
   parseWindowTrackerHelperOutput,
   parseWindowTrackerHelperState,
   queryWindowsForegroundProcessName,
+  queryWindowsTargetWindowHandle,
+  queryWindowsTrackerMpvWindows,
   resolveWindowsTrackerHelper,
   syncWindowsOverlayToMpvZOrder,
 } from './windows-helper';
@@ -129,7 +131,77 @@ test('lowerWindowsOverlayInZOrder forwards overlay handle to powershell helper',
 
   assert.equal(lowered, true);
   assert.equal(capturedMode, 'lower-overlay');
-  assert.deepEqual(capturedArgs, ['67890']);
+  assert.deepEqual(capturedArgs, ['', '67890']);
+});
+
+test('queryWindowsTrackerMpvWindows resolves geometry from the powershell helper', () => {
+  let capturedMode: string | null = null;
+  let capturedArgs: string[] | null = null;
+
+  const result = queryWindowsTrackerMpvWindows({
+    targetMpvSocketPath: '\\\\.\\pipe\\subminer-socket',
+    resolveHelper: () => ({
+      kind: 'powershell',
+      command: 'powershell.exe',
+      args: ['-File', 'helper.ps1'],
+      helperPath: 'helper.ps1',
+    }),
+    runHelperSync: (_spec, mode, extraArgs = []) => {
+      capturedMode = mode;
+      capturedArgs = extraArgs;
+      return {
+        stdout: '120,240,1280,720',
+        stderr: 'focus=focused\nstate=visible',
+      };
+    },
+  });
+
+  assert.deepEqual(result, {
+    matches: [
+      {
+        hwnd: 0,
+        bounds: {
+          x: 120,
+          y: 240,
+          width: 1280,
+          height: 720,
+        },
+        area: 1280 * 720,
+        isForeground: true,
+      },
+    ],
+    focusState: true,
+    windowState: 'visible',
+  });
+  assert.equal(capturedMode, 'geometry');
+  assert.deepEqual(capturedArgs, ['\\\\.\\pipe\\subminer-socket']);
+});
+
+test('queryWindowsTargetWindowHandle resolves the selected hwnd from the powershell helper', () => {
+  let capturedMode: string | null = null;
+  let capturedArgs: string[] | null = null;
+
+  const hwnd = queryWindowsTargetWindowHandle({
+    targetMpvSocketPath: '\\\\.\\pipe\\subminer-socket',
+    resolveHelper: () => ({
+      kind: 'powershell',
+      command: 'powershell.exe',
+      args: ['-File', 'helper.ps1'],
+      helperPath: 'helper.ps1',
+    }),
+    runHelperSync: (_spec, mode, extraArgs = []) => {
+      capturedMode = mode;
+      capturedArgs = extraArgs;
+      return {
+        stdout: '12345',
+        stderr: '',
+      };
+    },
+  });
+
+  assert.equal(hwnd, 12345);
+  assert.equal(capturedMode, 'target-hwnd');
+  assert.deepEqual(capturedArgs, ['\\\\.\\pipe\\subminer-socket']);
 });
 
 test('resolveWindowsTrackerHelper auto mode prefers native helper when present', () => {

src/window-trackers/windows-helper.ts

@@ -19,8 +19,9 @@
 import * as fs from 'node:fs';
 import * as os from 'node:os';
 import * as path from 'node:path';
-import { execFile, type ExecFileException } from 'child_process';
+import { execFile, spawnSync, type ExecFileException } from 'child_process';
 import type { WindowGeometry } from '../types';
+import type { MpvPollResult } from './win32';
 import { createLogger } from '../logger';
 
 const log = createLogger('tracker').child('windows-helper');
@@ -33,7 +34,8 @@ export type WindowsTrackerHelperRunMode =
   | 'bind-overlay'
   | 'lower-overlay'
   | 'set-owner'
-  | 'clear-owner';
+  | 'clear-owner'
+  | 'target-hwnd';
 
 export type WindowsTrackerHelperLaunchSpec = {
   kind: WindowsTrackerHelperKind;
@@ -267,6 +269,29 @@ type WindowsTrackerHelperRunnerResult = {
   stderr: string;
 };
 
+function runWindowsTrackerHelperWithSpawnSync(
+  spec: WindowsTrackerHelperLaunchSpec,
+  mode: WindowsTrackerHelperRunMode,
+  extraArgs: string[] = [],
+): WindowsTrackerHelperRunnerResult | null {
+  const modeArgs = spec.kind === 'native' ? ['--mode', mode] : ['-Mode', mode];
+  const result = spawnSync(spec.command, [...spec.args, ...modeArgs, ...extraArgs], {
+    encoding: 'utf-8',
+    timeout: 1000,
+    maxBuffer: 1024 * 1024,
+    windowsHide: true,
+  });
+
+  if (result.error || result.status !== 0) {
+    return null;
+  }
+
+  return {
+    stdout: result.stdout ?? '',
+    stderr: result.stderr ?? '',
+  };
+}
+
 function runWindowsTrackerHelperWithExecFile(
   spec: WindowsTrackerHelperLaunchSpec,
   mode: WindowsTrackerHelperRunMode,
@@ -316,6 +341,92 @@ export async function queryWindowsForegroundProcessName(deps: {
   return parseWindowTrackerHelperForegroundProcess(stdout);
 }
 
+export function queryWindowsTrackerMpvWindows(deps: {
+  targetMpvSocketPath?: string | null;
+  resolveHelper?: () => WindowsTrackerHelperLaunchSpec | null;
+  runHelperSync?: (
+    spec: WindowsTrackerHelperLaunchSpec,
+    mode: WindowsTrackerHelperRunMode,
+    extraArgs?: string[],
+  ) => WindowsTrackerHelperRunnerResult | null;
+} = {}): MpvPollResult | null {
+  const targetMpvSocketPath = deps.targetMpvSocketPath?.trim();
+  if (!targetMpvSocketPath) {
+    return null;
+  }
+
+  const spec =
+    deps.resolveHelper?.() ??
+    resolveWindowsTrackerHelper({
+      helperModeEnv: 'powershell',
+    });
+  if (!spec || spec.kind !== 'powershell') {
+    return null;
+  }
+
+  const runHelper = deps.runHelperSync ?? runWindowsTrackerHelperWithSpawnSync;
+  const result = runHelper(spec, 'geometry', [targetMpvSocketPath]);
+  if (!result) {
+    return null;
+  }
+
+  const geometry = parseWindowTrackerHelperOutput(result.stdout);
+  if (!geometry) {
+    return {
+      matches: [],
+      focusState: parseWindowTrackerHelperFocusState(result.stderr) ?? false,
+      windowState: parseWindowTrackerHelperState(result.stderr) ?? 'not-found',
+    };
+  }
+
+  const focusState = parseWindowTrackerHelperFocusState(result.stderr) ?? false;
+  return {
+    matches: [
+      {
+        hwnd: 0,
+        bounds: geometry,
+        area: geometry.width * geometry.height,
+        isForeground: focusState,
+      },
+    ],
+    focusState,
+    windowState: parseWindowTrackerHelperState(result.stderr) ?? 'visible',
+  };
+}
+
+export function queryWindowsTargetWindowHandle(deps: {
+  targetMpvSocketPath?: string | null;
+  resolveHelper?: () => WindowsTrackerHelperLaunchSpec | null;
+  runHelperSync?: (
+    spec: WindowsTrackerHelperLaunchSpec,
+    mode: WindowsTrackerHelperRunMode,
+    extraArgs?: string[],
+  ) => WindowsTrackerHelperRunnerResult | null;
+} = {}): number | null {
+  const targetMpvSocketPath = deps.targetMpvSocketPath?.trim();
+  if (!targetMpvSocketPath) {
+    return null;
+  }
+
+  const spec =
+    deps.resolveHelper?.() ??
+    resolveWindowsTrackerHelper({
+      helperModeEnv: 'powershell',
+    });
+  if (!spec || spec.kind !== 'powershell') {
+    return null;
+  }
+
+  const runHelper = deps.runHelperSync ?? runWindowsTrackerHelperWithSpawnSync;
+  const result = runHelper(spec, 'target-hwnd', [targetMpvSocketPath]);
+  if (!result) {
+    return null;
+  }
+
+  const handle = Number.parseInt(result.stdout.trim(), 10);
+  return Number.isFinite(handle) && handle > 0 ? handle : null;
+}
+
 export async function syncWindowsOverlayToMpvZOrder(deps: {
   overlayWindowHandle: string;
   targetMpvSocketPath?: string | null;
@@ -360,7 +471,7 @@ export async function lowerWindowsOverlayInZOrder(deps: {
   }
 
   const runHelper = deps.runHelper ?? runWindowsTrackerHelperWithExecFile;
-  const { stdout } = await runHelper(spec, 'lower-overlay', [deps.overlayWindowHandle]);
+  const { stdout } = await runHelper(spec, 'lower-overlay', ['', deps.overlayWindowHandle]);
   return stdout.trim() === 'ok';
 }
 
@@ -384,14 +495,10 @@ export function ensureWindowsOverlayTransparencyNative(overlayHwnd: number): boo
   }
 }
 
-export function bindWindowsOverlayAboveMpvNative(overlayHwnd: number): boolean {
+export function bindWindowsOverlayAboveMpvNative(overlayHwnd: number, mpvHwnd: number): boolean {
   try {
     const win32 = require('./win32') as typeof import('./win32');
-    const poll = win32.findMpvWindows();
-    const focused = poll.matches.find((m) => m.isForeground);
-    const best = focused ?? poll.matches.sort((a, b) => b.area - a.area)[0];
-    if (!best) return false;
-    win32.bindOverlayAboveMpv(overlayHwnd, best.hwnd);
+    win32.bindOverlayAboveMpv(overlayHwnd, mpvHwnd);
     win32.ensureOverlayTransparency(overlayHwnd);
     return true;
   } catch {

src/window-trackers/windows-tracker.test.ts

@@ -39,16 +39,19 @@ const mpvMinimized: MpvPollResult = {
 
 test('WindowsWindowTracker skips overlapping polls while poll is in flight', () => {
   let pollCalls = 0;
-  const tracker = new WindowsWindowTracker(undefined, {
+  let tracker: WindowsWindowTracker;
+  tracker = new WindowsWindowTracker(undefined, {
     pollMpvWindows: () => {
       pollCalls += 1;
+      if (pollCalls === 1) {
+        (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
+      }
       return mpvVisible();
     },
   });
 
   (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
-  (tracker as unknown as { pollGeometry: () => void }).pollGeometry();
-  assert.equal(pollCalls, 2);
+  assert.equal(pollCalls, 1);
 });
 
 test('WindowsWindowTracker updates geometry from poll output', () => {

src/window-trackers/windows-tracker.ts

@@ -19,6 +19,7 @@
 import { BaseWindowTracker } from './base-tracker';
 import type { WindowGeometry } from '../types';
 import type { MpvPollResult } from './win32';
+import { queryWindowsTrackerMpvWindows } from './windows-helper';
 import { createLogger } from '../logger';
 
 const log = createLogger('tracker').child('windows');
@@ -31,7 +32,26 @@ type WindowsTrackerDeps = {
   now?: () => number;
 };
 
-function defaultPollMpvWindows(): MpvPollResult {
+function shouldUsePowershellTrackerFallback(): boolean {
+  const helperMode = process.env.SUBMINER_WINDOWS_TRACKER_HELPER?.trim().toLowerCase();
+  if (helperMode === 'powershell') {
+    return true;
+  }
+
+  const helperPath = process.env.SUBMINER_WINDOWS_TRACKER_HELPER_PATH?.trim().toLowerCase();
+  return helperPath?.endsWith('.ps1') ?? false;
+}
+
+function defaultPollMpvWindows(targetMpvSocketPath?: string | null): MpvPollResult {
+  if (targetMpvSocketPath && shouldUsePowershellTrackerFallback()) {
+    const helperResult = queryWindowsTrackerMpvWindows({
+      targetMpvSocketPath,
+    });
+    if (helperResult) {
+      return helperResult;
+    }
+  }
+
   const win32 = require('./win32') as typeof import('./win32');
   return win32.findMpvWindows();
 }
@@ -49,10 +69,12 @@ export class WindowsWindowTracker extends BaseWindowTracker {
   private consecutiveMisses = 0;
   private trackingLossStartedAtMs: number | null = null;
   private targetWindowMinimized = false;
+  private readonly targetMpvSocketPath: string | null;
 
   constructor(_targetMpvSocketPath?: string, deps: WindowsTrackerDeps = {}) {
     super();
-    this.pollMpvWindows = deps.pollMpvWindows ?? defaultPollMpvWindows;
+    this.targetMpvSocketPath = _targetMpvSocketPath?.trim() || null;
+    this.pollMpvWindows = deps.pollMpvWindows ?? (() => defaultPollMpvWindows(this.targetMpvSocketPath));
     this.maxConsecutiveMisses = Math.max(1, Math.floor(deps.maxConsecutiveMisses ?? 2));
     this.trackingLossGraceMs = Math.max(0, Math.floor(deps.trackingLossGraceMs ?? 1_500));
     this.minimizedTrackingLossGraceMs = Math.max(