fix: suppress N+1 for kana-only candidates and fix minSentenceWords coun

- Treat kana-only tokens with surrounding subtitle punctuation (…, ―, etc.) as kana-only so they are not promoted to N+1 targets
- Exclude unknown tokens filtered from N+1 targeting from the minSentenceWords count so filtered kana-only unknowns cannot satisfy sentence length threshold
- Add regression tests for kana-only candidate suppression and filtered-unknown padding cases

backlog/tasks/task-309 - Accept-modified-follow-up-digits-for-multi-line-sentence-mining.md

@@ -0,0 +1,57 @@
+---
+id: TASK-309
+title: Accept modified follow-up digits for multi-line sentence mining
+status: Done
+assignee:
+  - '@codex'
+created_date: '2026-04-27 20:06'
+updated_date: '2026-04-27 20:15'
+labels:
+  - bug
+  - linux
+  - shortcuts
+dependencies: []
+priority: high
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+
+On Linux, `Ctrl+Shift+S` starts multi-line sentence-card mining, but the follow-up digit is not accepted and the prompt times out. Restore reliable digit capture for the multi-mine flow, including the common case where the original shortcut modifiers are still held briefly while pressing the digit.
+
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+
+<!-- AC:BEGIN -->
+
+- [x] #1 `Ctrl+Shift+S` followed by a number-row digit creates a counted `mineSentenceMultiple` request instead of timing out.
+- [x] #2 Follow-up digit capture works when the user has not fully released `Ctrl`/`Shift` after the starter shortcut.
+- [x] #3 Regression coverage includes renderer session bindings and mpv plugin numeric selection.
+<!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+
+Backlog MCP unavailable in this session, so this task is tracked via repo-local backlog files.
+
+Implemented renderer digit extraction from `KeyboardEvent.code` for pending numeric selection, so shifted number-row events such as `Ctrl+Shift+Digit3` still dispatch count `3`. Updated the mpv plugin session-binding numeric selector to register bare digits plus the starter shortcut modifier combinations, so plugin-owned `Ctrl+Shift+S` can accept a follow-up digit before the modifiers are fully released.
+
+Verification:
+
+- `bun test src/renderer/handlers/keyboard.test.ts src/core/services/overlay-shortcut-handler.test.ts src/core/services/overlay-window.test.ts`
+- `bun run test:plugin:src`
+- `bun run changelog:lint`
+- `bun x prettier --check src/renderer/handlers/keyboard.ts src/renderer/handlers/keyboard.test.ts package.json 'changes/309-multi-mine-modified-digits.md' 'backlog/tasks/task-309 - Accept-modified-follow-up-digits-for-multi-line-sentence-mining.md'`
+
+<!-- SECTION:NOTES:END -->
+
+## Final Summary
+
+<!-- SECTION:FINAL_SUMMARY:BEGIN -->
+
+Restored multi-line sentence-card digit capture for the case where `Ctrl`/`Shift` are still held after `Ctrl+Shift+S`. The renderer now accepts digits by physical `Digit1`-`Digit9`/`Numpad1`-`Numpad9` code during pending numeric selection, and the mpv plugin registers the matching modified digit bindings for session-binding numeric prompts.
+
+<!-- SECTION:FINAL_SUMMARY:END -->

backlog/tasks/task-310 - Suppress-N1-highlight-for-kana-only-candidate-sentences.md

@@ -0,0 +1,58 @@
+---
+id: TASK-310
+title: Suppress N+1 highlight for kana-only candidate sentences
+status: Done
+assignee:
+  - Codex
+created_date: '2026-04-28 06:55'
+updated_date: '2026-04-28 07:04'
+labels:
+  - tokenizer
+  - n+1
+dependencies: []
+priority: medium
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Reduce noisy N+1 subtitle annotations when the only unknown candidates in a sentence are kana-only hiragana or katakana words, such as mostly-kana subtitle lines where highlighting a particle/helper-like token is low value.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [x] #1 N+1 annotation does not mark a kana-only unknown target when all N+1 candidates in the sentence are kana-only.
+- [x] #2 N+1 annotation continues to mark kanji or mixed-script unknown targets in otherwise eligible sentences.
+- [x] #3 A focused regression test covers the kana-only candidate case.
+- [x] #4 N+1 minimum sentence word count excludes tokens stripped by the subtitle annotation filter, so filtered grammar/noise tokens cannot satisfy minSentenceWords.
+<!-- AC:END -->
+
+## Implementation Plan
+
+<!-- SECTION:PLAN:BEGIN -->
+1. Keep the existing N+1 target eligibility guard: kana-only subtitle surfaces do not become N+1 targets.
+2. Add a focused regression in src/core/services/tokenizer/annotation-stage.test.ts proving annotation-filtered tokens do not count toward ankiConnect.nPlusOne.minSentenceWords.
+3. Verify the new regression fails before code changes.
+4. Patch src/token-merger.ts so the N+1 minimum sentence word count uses the same subtitle-annotation eligibility filter as annotation rendering, excluding filtered particles/auxiliaries/noise from the count.
+5. Re-run focused tokenizer tests, then update TASK-310 acceptance criteria and final notes.
+<!-- SECTION:PLAN:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Initial context: current token-merger has an existing surface-level kana-only guard in isNPlusOneCandidateToken, added in commit 9e4ad907. Need decide whether to broaden behavior to lookup/headword forms or verify current behavior only.
+
+Implemented by treating kana-only N+1 candidates as kana-only even when their token surface includes surrounding subtitle punctuation such as ellipsis or dashes. Focused regression was red before the token-merger change: スイッチ… was marked true, then passed after the guard update. test:env initially hit an unrelated immersion-tracker active_days timing/order failure and Bun follow-on loader error; the failing test passed in isolation and the full test:env rerun passed.
+
+Reopened for follow-up scope: minSentenceWords must count annotation-eligible tokens only, not tokens stripped from annotation metadata.
+
+Implemented follow-up minSentenceWords behavior: unknown tokens filtered from N+1 targeting no longer contribute to sentence length; known eligible tokens and true N+1 candidates still count.
+<!-- SECTION:NOTES:END -->
+
+## Final Summary
+
+<!-- SECTION:FINAL_SUMMARY:BEGIN -->
+Changed N+1 sentence-length counting so minSentenceWords only counts known eligible words and actual N+1 target candidates. Unknown tokens filtered from N+1 targeting, including kana-only unknowns, no longer pad a sentence into eligibility. Existing annotation-filtered particles/auxiliaries remain excluded. Added regression coverage for the filtered unknown padding case while preserving kanji/mixed-script target behavior.
+
+Verification: new regression failed before implementation; `bun test src/core/services/tokenizer/annotation-stage.test.ts -t "N\\+1"` pass; full `bun test src/core/services/tokenizer/annotation-stage.test.ts` pass; `bun test src/core/services/tokenizer.test.ts -t "N\\+1"` pass; `bun run typecheck` pass.
+<!-- SECTION:FINAL_SUMMARY:END -->

changes/309-multi-mine-modified-digits.md

@@ -0,0 +1,4 @@
+type: fixed
+area: shortcuts
+
+- Accept follow-up number-row digits for multi-line subtitle mining even when the original shortcut modifiers are still held.

package.json

@@ -45,7 +45,7 @@
     "test:config:src": "bun test src/config/config.test.ts src/config/path-resolution.test.ts src/config/resolve/anki-connect.test.ts src/config/resolve/integrations.test.ts src/config/resolve/subtitle-style.test.ts src/config/resolve/jellyfin.test.ts src/config/definitions/domain-registry.test.ts src/generate-config-example.test.ts src/verify-config-example.test.ts",
     "test:config:dist": "bun test dist/config/config.test.js dist/config/path-resolution.test.js dist/config/resolve/anki-connect.test.js dist/config/resolve/integrations.test.js dist/config/resolve/subtitle-style.test.js dist/config/resolve/jellyfin.test.js dist/config/definitions/domain-registry.test.js dist/generate-config-example.test.js dist/verify-config-example.test.js",
     "test:config:smoke:dist": "bun test dist/config/path-resolution.test.js",
-    "test:plugin:src": "lua scripts/test-plugin-lua-compat.lua && lua scripts/test-plugin-start-gate.lua && lua scripts/test-plugin-binary-windows.lua",
+    "test:plugin:src": "lua scripts/test-plugin-lua-compat.lua && lua scripts/test-plugin-start-gate.lua && lua scripts/test-plugin-session-bindings.lua && lua scripts/test-plugin-binary-windows.lua",
     "test:launcher:smoke:src": "bun test launcher/smoke.e2e.test.ts",
     "test:launcher:src": "bun test launcher/config.test.ts launcher/config-domain-parsers.test.ts launcher/config/cli-parser-builder.test.ts launcher/config/args-normalizer.test.ts launcher/mpv.test.ts launcher/picker.test.ts launcher/parse-args.test.ts launcher/main.test.ts launcher/commands/command-modules.test.ts launcher/smoke.e2e.test.ts && bun run test:plugin:src",
     "test:core:src": "bun test src/cli/args.test.ts src/cli/help.test.ts src/shared/setup-state.test.ts src/core/services/cli-command.test.ts src/core/services/field-grouping-overlay.test.ts src/core/services/numeric-shortcut-session.test.ts src/core/services/secondary-subtitle.test.ts src/core/services/mpv-render-metrics.test.ts src/core/services/overlay-content-measurement.test.ts src/core/services/mpv-control.test.ts src/core/services/mpv.test.ts src/core/services/runtime-options-ipc.test.ts src/core/services/runtime-config.test.ts src/core/services/yomitan-extension-paths.test.ts src/core/services/config-hot-reload.test.ts src/core/services/discord-presence.test.ts src/core/services/tokenizer.test.ts src/core/services/tokenizer/annotation-stage.test.ts src/core/services/tokenizer/parser-selection-stage.test.ts src/core/services/tokenizer/parser-enrichment-stage.test.ts src/core/services/subsync.test.ts src/core/services/overlay-bridge.test.ts src/core/services/overlay-shortcut-handler.test.ts src/core/services/stats-window.test.ts src/main/runtime/stats-server-routing.test.ts src/core/services/mining.test.ts src/core/services/anki-jimaku.test.ts src/core/services/jimaku-download-path.test.ts src/core/services/jellyfin.test.ts src/core/services/jellyfin-remote.test.ts src/core/services/immersion-tracker-service.test.ts src/core/services/overlay-runtime-init.test.ts src/core/services/app-ready.test.ts src/core/services/startup-bootstrap.test.ts src/core/services/subtitle-processing-controller.test.ts src/core/services/anilist/anilist-update-queue.test.ts src/core/services/anilist/rate-limiter.test.ts src/core/services/jlpt-token-filter.test.ts src/core/services/subtitle-position.test.ts src/core/utils/shortcut-config.test.ts src/main/runtime/first-run-setup-plugin.test.ts src/main/runtime/first-run-setup-service.test.ts src/main/runtime/first-run-setup-window.test.ts src/main/runtime/tray-runtime.test.ts src/main/runtime/tray-main-actions.test.ts src/main/runtime/tray-main-deps.test.ts src/main/runtime/tray-runtime-handlers.test.ts src/main/runtime/cli-command-context-main-deps.test.ts src/main/runtime/app-ready-main-deps.test.ts src/renderer/error-recovery.test.ts src/renderer/subtitle-render.test.ts src/renderer/handlers/mouse.test.ts src/renderer/handlers/keyboard.test.ts src/renderer/modals/jimaku.test.ts src/subsync/utils.test.ts src/main/anilist-url-guard.test.ts src/window-trackers/hyprland-tracker.test.ts src/window-trackers/x11-tracker.test.ts src/window-trackers/windows-helper.test.ts src/window-trackers/windows-tracker.test.ts launcher/config.test.ts launcher/config-domain-parsers.test.ts launcher/config/cli-parser-builder.test.ts launcher/config/args-normalizer.test.ts launcher/parse-args.test.ts launcher/main.test.ts launcher/commands/command-modules.test.ts launcher/setup-gate.test.ts stats/src/lib/api-client.test.ts",

plugin/subminer/session_bindings.lua

@@ -225,16 +225,39 @@ function M.create(ctx)
 		end
 	end
 
-	local function start_numeric_selection(action_id, timeout_ms)
+	local function build_modifier_prefixes(modifiers)
+		local prefixes = { "" }
+		if type(modifiers) ~= "table" then
+			return prefixes
+		end
+
+		for _, modifier in ipairs(modifiers) do
+			local mapped = MODIFIER_MAP[modifier]
+			if mapped then
+				local existing_count = #prefixes
+				for index = 1, existing_count do
+					prefixes[#prefixes + 1] = prefixes[index] .. mapped .. "+"
+				end
+			end
+		end
+		return prefixes
+	end
+
+	local function start_numeric_selection(action_id, timeout_ms, starter_modifiers)
 		clear_numeric_selection(false)
+		local modifier_prefixes = build_modifier_prefixes(starter_modifiers)
 		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)
+			for _, prefix in ipairs(modifier_prefixes) do
+				local key_name = prefix .. digit_string
+				local modifier_name = prefix:gsub("[^%w]", "-")
+				local name = "subminer-session-digit-" .. modifier_name .. digit_string
+				state.session_numeric_binding_names[#state.session_numeric_binding_names + 1] = name
+				mp.add_forced_key_binding(key_name, name, function()
+					clear_numeric_selection(false)
+					invoke_cli_action(action_id, { count = digit })
+				end)
+			end
 		end
 
 		state.session_numeric_binding_names[#state.session_numeric_binding_names + 1] =
@@ -272,7 +295,7 @@ function M.create(ctx)
 		end
 
 		if binding.actionId == "copySubtitleMultiple" or binding.actionId == "mineSentenceMultiple" then
-			start_numeric_selection(binding.actionId, numeric_selection_timeout_ms)
+			start_numeric_selection(binding.actionId, numeric_selection_timeout_ms, binding.key.modifiers)
 			return
 		end
 

scripts/test-plugin-session-bindings.lua

@@ -0,0 +1,134 @@
+package.path = "plugin/subminer/?.lua;" .. package.path
+
+local session_bindings = require("session_bindings")
+
+local function assert_true(condition, message)
+	if condition then
+		return
+	end
+	error(message)
+end
+
+local artifact_path = ".tmp/test-plugin-session-bindings.json"
+os.execute("mkdir -p .tmp")
+local handle = assert(io.open(artifact_path, "w"))
+handle:write("__SESSION_BINDINGS__")
+handle:close()
+
+local recorded = {
+	bindings = {},
+	removed = {},
+	async_calls = {},
+	osd = {},
+}
+
+local mp = {}
+
+function mp.add_forced_key_binding(keys, name, fn)
+	recorded.bindings[#recorded.bindings + 1] = {
+		keys = keys,
+		name = name,
+		fn = fn,
+	}
+end
+
+function mp.remove_key_binding(name)
+	recorded.removed[#recorded.removed + 1] = name
+end
+
+function mp.add_timeout(seconds, callback)
+	return {
+		seconds = seconds,
+		callback = callback,
+		killed = false,
+		kill = function(self)
+			self.killed = true
+		end,
+	}
+end
+
+function mp.osd_message(message)
+	recorded.osd[#recorded.osd + 1] = message
+end
+
+local ctx = {
+	mp = mp,
+	utils = {
+		parse_json = function(raw)
+			if raw ~= "__SESSION_BINDINGS__" then
+				return nil, "unexpected artifact"
+			end
+			return {
+				numericSelectionTimeoutMs = 3000,
+				bindings = {
+					{
+						key = {
+							code = "KeyS",
+							modifiers = { "ctrl", "shift" },
+						},
+						actionType = "session-action",
+						actionId = "mineSentenceMultiple",
+					},
+				},
+			}, nil
+		end,
+	},
+	state = {
+		binary_path = "/tmp/subminer",
+		session_binding_names = {},
+		session_numeric_binding_names = {},
+		session_numeric_selection = nil,
+	},
+	process = {
+		check_binary_available = function()
+			return true
+		end,
+		run_binary_command_async = function(args)
+			recorded.async_calls[#recorded.async_calls + 1] = args
+		end,
+	},
+	environment = {
+		resolve_session_bindings_artifact_path = function()
+			return artifact_path
+		end,
+	},
+	log = {
+		subminer_log = function() end,
+		show_osd = function(message)
+			recorded.osd[#recorded.osd + 1] = message
+		end,
+	},
+}
+
+local bindings = session_bindings.create(ctx)
+assert_true(bindings.register_bindings(), "session bindings should register")
+
+local starter = nil
+for _, binding in ipairs(recorded.bindings) do
+	if binding.keys == "Ctrl+Shift+s" then
+		starter = binding
+		break
+	end
+end
+assert_true(starter ~= nil, "multi-mine starter binding should be registered")
+
+starter.fn()
+
+local modified_digit = nil
+for _, binding in ipairs(recorded.bindings) do
+	if binding.keys == "Ctrl+Shift+3" then
+		modified_digit = binding
+		break
+	end
+end
+assert_true(modified_digit ~= nil, "numeric selection should bind Ctrl+Shift+3")
+
+modified_digit.fn()
+
+local call = recorded.async_calls[#recorded.async_calls]
+assert_true(call ~= nil, "modified digit should invoke CLI action")
+assert_true(call[1] == "/tmp/subminer", "CLI action should use configured binary")
+assert_true(call[2] == "--mine-sentence-count", "CLI action should mine sentence count")
+assert_true(call[3] == "3", "CLI action should pass selected count")
+
+print("plugin session binding regression tests: OK")

src/core/services/tokenizer.test.ts

@@ -3086,6 +3086,27 @@ test('tokenizeSubtitle uses Yomitan word classes to classify standalone particle
   assert.equal(result.tokens?.[0]?.jlptLevel, undefined);
 });
 
+test('tokenizeSubtitle uses Yomitan word classes to classify auxiliary subclasses', async () => {
+  const result = await tokenizeSubtitle(
+    'です',
+    makeDepsFromYomitanTokens(
+      [{ surface: 'です', reading: 'です', headword: 'です', wordClasses: ['aux-v'] }],
+      {
+        getFrequencyDictionaryEnabled: () => true,
+        getFrequencyRank: () => 10,
+        getJlptLevel: () => 'N5',
+        tokenizeWithMecab: async () => null,
+      },
+    ),
+  );
+
+  assert.equal(result.tokens?.length, 1);
+  assert.equal(result.tokens?.[0]?.partOfSpeech, PartOfSpeech.bound_auxiliary);
+  assert.equal(result.tokens?.[0]?.pos1, '助動詞');
+  assert.equal(result.tokens?.[0]?.frequencyRank, undefined);
+  assert.equal(result.tokens?.[0]?.jlptLevel, undefined);
+});
+
 test('tokenizeSubtitle fills detailed MeCab POS when Yomitan word class supplies coarse POS', async () => {
   const result = await tokenizeSubtitle(
     'は',

src/core/services/tokenizer.ts

@@ -359,7 +359,7 @@ function resolvePartOfSpeechFromYomitanWordClasses(wordClasses: string[]): {
   if (wordClasses.includes('prt')) {
     return { partOfSpeech: PartOfSpeech.particle, pos1: '助詞' };
   }
-  if (wordClasses.includes('aux')) {
+  if (wordClasses.some((wordClass) => wordClass === 'aux' || wordClass.startsWith('aux-'))) {
     return { partOfSpeech: PartOfSpeech.bound_auxiliary, pos1: '助動詞' };
   }
   if (wordClasses.some((wordClass) => wordClass.startsWith('v'))) {

src/core/services/tokenizer/annotation-stage.test.ts

@@ -627,6 +627,63 @@ test('annotateTokens N+1 handoff marks expected target when threshold is satisfi
   assert.equal(result[2]?.isNPlusOneTarget, false);
 });
 
+test('annotateTokens does not mark kana-only unknown target with subtitle punctuation as N+1', () => {
+  const tokens = [
+    makeToken({
+      surface: '何やら',
+      headword: '何やら',
+      reading: 'ナニヤラ',
+      pos1: '副詞',
+      startPos: 0,
+      endPos: 3,
+    }),
+    makeToken({
+      surface: 'ボタン',
+      headword: 'ボタン',
+      reading: 'ボタン',
+      pos1: '名詞',
+      startPos: 3,
+      endPos: 6,
+    }),
+    makeToken({
+      surface: 'スイッチ…',
+      headword: 'スイッチ',
+      reading: 'スイッチ',
+      pos1: '名詞',
+      startPos: 6,
+      endPos: 11,
+    }),
+  ];
+
+  const result = annotateTokens(
+    tokens,
+    makeDeps({
+      isKnownWord: (text) => text === '何やら' || text === 'ボタン',
+    }),
+    { minSentenceWordsForNPlusOne: 3 },
+  );
+
+  assert.equal(result[2]?.isNPlusOneTarget, false);
+});
+
+test('annotateTokens still marks kanji unknown target in otherwise eligible sentence as N+1', () => {
+  const tokens = [
+    makeToken({ surface: '私', headword: '私', pos1: '名詞', startPos: 0, endPos: 1 }),
+    makeToken({ surface: '猫', headword: '猫', pos1: '名詞', startPos: 1, endPos: 2 }),
+    makeToken({ surface: '装置…', headword: '装置', pos1: '名詞', startPos: 2, endPos: 5 }),
+  ];
+
+  const result = annotateTokens(
+    tokens,
+    makeDeps({
+      isKnownWord: (text) => text === '私' || text === '猫',
+    }),
+    { minSentenceWordsForNPlusOne: 3 },
+  );
+
+  assert.equal(result[2]?.isNPlusOneTarget, true);
+});
+
 test('annotateTokens N+1 minimum sentence words counts only eligible word tokens', () => {
   const tokens = [
     makeToken({ surface: '猫', headword: '猫', startPos: 0, endPos: 1 }),
@@ -662,6 +719,32 @@ test('annotateTokens N+1 minimum sentence words counts only eligible word tokens
   assert.equal(result[0]?.isNPlusOneTarget, false);
 });
 
+test('annotateTokens N+1 minimum sentence words excludes unknown tokens filtered from N+1 targeting', () => {
+  const tokens = [
+    makeToken({ surface: '私', headword: '私', pos1: '名詞', startPos: 0, endPos: 1 }),
+    makeToken({ surface: '猫', headword: '猫', pos1: '名詞', startPos: 1, endPos: 2 }),
+    makeToken({
+      surface: 'スイッチ',
+      headword: 'スイッチ',
+      reading: 'スイッチ',
+      pos1: '名詞',
+      startPos: 2,
+      endPos: 6,
+    }),
+    makeToken({ surface: '装置', headword: '装置', pos1: '名詞', startPos: 6, endPos: 8 }),
+  ];
+
+  const result = annotateTokens(
+    tokens,
+    makeDeps({
+      isKnownWord: (text) => text === '私' || text === '猫',
+    }),
+    { minSentenceWordsForNPlusOne: 4 },
+  );
+
+  assert.equal(result[3]?.isNPlusOneTarget, false);
+});
+
 test('annotateTokens N+1 sentence word count respects source punctuation gaps omitted by Yomitan', () => {
   const tokens = [
     makeToken({
@@ -713,6 +796,57 @@ test('annotateTokens N+1 sentence word count respects source punctuation gaps om
   assert.equal(result[3]?.isNPlusOneTarget, false);
 });
 
+test('annotateTokens N+1 sentence word count normalizes line breaks before gap detection', () => {
+  const tokens = [
+    makeToken({
+      surface: '私',
+      headword: '私',
+      pos1: '名詞',
+      startPos: 0,
+      endPos: 1,
+    }),
+    makeToken({
+      surface: '猫',
+      headword: '猫',
+      pos1: '名詞',
+      startPos: 2,
+      endPos: 3,
+    }),
+    makeToken({
+      surface: '犬',
+      headword: '犬',
+      pos1: '名詞',
+      startPos: 3,
+      endPos: 4,
+    }),
+    makeToken({
+      surface: 'ふざけん',
+      headword: 'ふざける',
+      partOfSpeech: PartOfSpeech.verb,
+      pos1: '動詞',
+      pos2: '自立',
+      startPos: 5,
+      endPos: 9,
+    }),
+  ];
+
+  const result = annotateTokens(
+    tokens,
+    makeDeps({
+      isKnownWord: (text) => text === '私' || text === '猫' || text === '犬',
+    }),
+    {
+      minSentenceWordsForNPlusOne: 3,
+      sourceText: '私\r\n猫犬！ふざけんなよ！',
+    },
+  );
+
+  assert.equal(result[0]?.isNPlusOneTarget, false);
+  assert.equal(result[1]?.isNPlusOneTarget, false);
+  assert.equal(result[2]?.isNPlusOneTarget, false);
+  assert.equal(result[3]?.isNPlusOneTarget, false);
+});
+
 test('annotateTokens applies configured pos1 exclusions to both frequency and N+1', () => {
   const tokens = [
     makeToken({

src/main.ts

@@ -33,6 +33,11 @@ import {
 import { applyControllerConfigUpdate } from './main/controller-config-update.js';
 import { openPlaylistBrowser as openPlaylistBrowserRuntime } from './main/runtime/playlist-browser-open';
 import { createDiscordRpcClient } from './main/runtime/discord-rpc-client.js';
+import {
+  type CancelLinuxMpvFullscreenOverlayRefreshBurst,
+  clearLinuxMpvFullscreenOverlayRefreshTimeouts,
+  scheduleLinuxVisibleOverlayFullscreenRefreshBurst,
+} from './main/runtime/linux-mpv-fullscreen-overlay-refresh';
 import { mergeAiConfig } from './ai/config';
 
 function getPasswordStoreArg(argv: string[]): string | null {
@@ -1395,6 +1400,9 @@ const subtitleProcessingController = createSubtitleProcessingController(
 let subtitlePrefetchService: SubtitlePrefetchService | null = null;
 let subtitlePrefetchRefreshTimer: ReturnType<typeof setTimeout> | null = null;
 let lastObservedTimePos = 0;
+let cancelLinuxMpvFullscreenOverlayRefreshBurst:
+  | CancelLinuxMpvFullscreenOverlayRefreshBurst
+  | null = null;
 const SEEK_THRESHOLD_SECONDS = 3;
 
 function clearScheduledSubtitlePrefetchRefresh(): void {
@@ -1404,6 +1412,11 @@ function clearScheduledSubtitlePrefetchRefresh(): void {
   }
 }
 
+function cancelPendingLinuxMpvFullscreenOverlayRefreshBurst(): void {
+  cancelLinuxMpvFullscreenOverlayRefreshBurst?.();
+  cancelLinuxMpvFullscreenOverlayRefreshBurst = null;
+}
+
 const subtitlePrefetchInitController = createSubtitlePrefetchInitController({
   getCurrentService: () => subtitlePrefetchService,
   setCurrentService: (service) => {
@@ -1911,7 +1924,6 @@ const WINDOWS_VISIBLE_OVERLAY_BLUR_REFRESH_DELAYS_MS = [0, 25, 100, 250] as cons
 const WINDOWS_VISIBLE_OVERLAY_Z_ORDER_RETRY_DELAYS_MS = [0, 48, 120, 240, 480] as const;
 const WINDOWS_VISIBLE_OVERLAY_FOREGROUND_POLL_INTERVAL_MS = 75;
 const WINDOWS_VISIBLE_OVERLAY_FOCUS_HANDOFF_GRACE_MS = 200;
-const LINUX_MPV_FULLSCREEN_OVERLAY_REFRESH_DELAYS_MS = [0, 50, 150, 300, 600] as const;
 let windowsVisibleOverlayBlurRefreshTimeouts: Array<ReturnType<typeof setTimeout>> = [];
 let windowsVisibleOverlayZOrderRetryTimeouts: Array<ReturnType<typeof setTimeout>> = [];
 let windowsVisibleOverlayZOrderSyncInFlight = false;
@@ -1919,7 +1931,6 @@ let windowsVisibleOverlayZOrderSyncQueued = false;
 let windowsVisibleOverlayForegroundPollInterval: ReturnType<typeof setInterval> | null = null;
 let lastWindowsVisibleOverlayForegroundProcessName: string | null = null;
 let lastWindowsVisibleOverlayBlurredAtMs = 0;
-let linuxMpvFullscreenOverlayRefreshTimeouts: Array<ReturnType<typeof setTimeout>> = [];
 
 function clearWindowsVisibleOverlayBlurRefreshTimeouts(): void {
   for (const timeout of windowsVisibleOverlayBlurRefreshTimeouts) {
@@ -1935,48 +1946,6 @@ function clearWindowsVisibleOverlayZOrderRetryTimeouts(): void {
   windowsVisibleOverlayZOrderRetryTimeouts = [];
 }
 
-function clearLinuxMpvFullscreenOverlayRefreshTimeouts(): void {
-  for (const timeout of linuxMpvFullscreenOverlayRefreshTimeouts) {
-    clearTimeout(timeout);
-  }
-  linuxMpvFullscreenOverlayRefreshTimeouts = [];
-}
-
-function refreshLinuxVisibleOverlayAfterMpvFullscreenChange(): void {
-  if (process.platform !== 'linux' || !overlayManager.getVisibleOverlayVisible()) {
-    return;
-  }
-
-  overlayVisibilityRuntime.updateVisibleOverlayVisibility();
-
-  const mainWindow = overlayManager.getMainWindow();
-  if (!mainWindow || mainWindow.isDestroyed() || !mainWindow.isVisible()) {
-    return;
-  }
-
-  mainWindow.hide();
-  mainWindow.showInactive();
-  ensureOverlayWindowLevel(mainWindow);
-}
-
-function scheduleLinuxVisibleOverlayFullscreenRefreshBurst(): void {
-  if (process.platform !== 'linux') {
-    return;
-  }
-
-  clearLinuxMpvFullscreenOverlayRefreshTimeouts();
-  for (const delayMs of LINUX_MPV_FULLSCREEN_OVERLAY_REFRESH_DELAYS_MS) {
-    const refreshTimeout = setTimeout(() => {
-      linuxMpvFullscreenOverlayRefreshTimeouts = linuxMpvFullscreenOverlayRefreshTimeouts.filter(
-        (timeout) => timeout !== refreshTimeout,
-      );
-      refreshLinuxVisibleOverlayAfterMpvFullscreenChange();
-    }, delayMs);
-    refreshTimeout.unref?.();
-    linuxMpvFullscreenOverlayRefreshTimeouts.push(refreshTimeout);
-  }
-}
-
 function getWindowsNativeWindowHandle(window: BrowserWindow): string {
   const handle = window.getNativeWindowHandle();
   return handle.length >= 8
@@ -3146,6 +3115,10 @@ const {
     stopTexthookerService: () => texthookerService.stop(),
     clearWindowsVisibleOverlayForegroundPollLoop: () =>
       clearWindowsVisibleOverlayForegroundPollLoop(),
+    clearLinuxMpvFullscreenOverlayRefreshTimeouts: () => {
+      cancelLinuxMpvFullscreenOverlayRefreshBurst = null;
+      clearLinuxMpvFullscreenOverlayRefreshTimeouts();
+    },
     getMainOverlayWindow: () => overlayManager.getMainWindow(),
     clearMainOverlayWindow: () => overlayManager.setMainWindow(null),
     getModalOverlayWindow: () => overlayManager.getModalWindow(),
@@ -3851,7 +3824,15 @@ const {
       lastObservedTimePos = time;
     },
     onFullscreenChange: () => {
-      scheduleLinuxVisibleOverlayFullscreenRefreshBurst();
+      cancelLinuxMpvFullscreenOverlayRefreshBurst =
+        scheduleLinuxVisibleOverlayFullscreenRefreshBurst({
+          overlayManager: {
+            getMainWindow: () => overlayManager.getMainWindow(),
+            getVisibleOverlayVisible: () => overlayManager.getVisibleOverlayVisible(),
+          },
+          overlayVisibilityRuntime,
+          ensureOverlayWindowLevel: (window) => ensureOverlayWindowLevel(window),
+        });
     },
     onSubtitleTrackChange: (sid) => {
       scheduleSubtitlePrefetchRefresh();
@@ -5180,6 +5161,7 @@ const { createMainWindow: createMainWindowHandler, createModalWindow: createModa
       onWindowContentReady: () => overlayVisibilityRuntime.updateVisibleOverlayVisibility(),
       onWindowClosed: (windowKind) => {
         if (windowKind === 'visible') {
+          cancelPendingLinuxMpvFullscreenOverlayRefreshBurst();
           overlayManager.setMainWindow(null);
         } else {
           overlayManager.setModalWindow(null);
@@ -5427,6 +5409,9 @@ function ensureOverlayWindowsReadyForVisibilityActions(): void {
 
 function setVisibleOverlayVisible(visible: boolean): void {
   ensureOverlayWindowsReadyForVisibilityActions();
+  if (!visible) {
+    cancelPendingLinuxMpvFullscreenOverlayRefreshBurst();
+  }
   if (visible) {
     void ensureOverlayMpvSubtitlesHidden();
   }
@@ -5436,13 +5421,18 @@ function setVisibleOverlayVisible(visible: boolean): void {
 
 function toggleVisibleOverlay(): void {
   ensureOverlayWindowsReadyForVisibilityActions();
-  if (!overlayManager.getVisibleOverlayVisible()) {
+  if (overlayManager.getVisibleOverlayVisible()) {
+    cancelPendingLinuxMpvFullscreenOverlayRefreshBurst();
+  } else {
     void ensureOverlayMpvSubtitlesHidden();
   }
   toggleVisibleOverlayHandler();
   syncOverlayMpvSubtitleSuppression();
 }
 function setOverlayVisible(visible: boolean): void {
+  if (!visible) {
+    cancelPendingLinuxMpvFullscreenOverlayRefreshBurst();
+  }
   if (visible) {
     void ensureOverlayMpvSubtitlesHidden();
   }

src/main/runtime/app-lifecycle-actions.test.ts

@@ -18,6 +18,8 @@ test('on will quit cleanup handler runs all cleanup steps', () => {
     stopTexthookerService: () => calls.push('stop-texthooker'),
     clearWindowsVisibleOverlayForegroundPollLoop: () =>
       calls.push('clear-windows-visible-overlay-poll'),
+    clearLinuxMpvFullscreenOverlayRefreshTimeouts: () =>
+      calls.push('clear-linux-mpv-fullscreen-overlay-refresh-timeouts'),
     destroyMainOverlayWindow: () => calls.push('destroy-main-overlay-window'),
     destroyModalOverlayWindow: () => calls.push('destroy-modal-overlay-window'),
     destroyYomitanParserWindow: () => calls.push('destroy-yomitan-window'),
@@ -42,10 +44,11 @@ test('on will quit cleanup handler runs all cleanup steps', () => {
   });
 
   cleanup();
-  assert.equal(calls.length, 29);
+  assert.equal(calls.length, 30);
   assert.equal(calls[0], 'destroy-tray');
   assert.equal(calls[calls.length - 1], 'stop-discord-presence');
   assert.ok(calls.includes('clear-windows-visible-overlay-poll'));
+  assert.ok(calls.includes('clear-linux-mpv-fullscreen-overlay-refresh-timeouts'));
   assert.ok(calls.indexOf('flush-mpv-log') < calls.indexOf('destroy-socket'));
 });
 

src/main/runtime/app-lifecycle-actions.ts

@@ -7,6 +7,7 @@ export function createOnWillQuitCleanupHandler(deps: {
   stopSubtitleWebsocket: () => void;
   stopTexthookerService: () => void;
   clearWindowsVisibleOverlayForegroundPollLoop: () => void;
+  clearLinuxMpvFullscreenOverlayRefreshTimeouts: () => void;
   destroyMainOverlayWindow: () => void;
   destroyModalOverlayWindow: () => void;
   destroyYomitanParserWindow: () => void;
@@ -38,6 +39,7 @@ export function createOnWillQuitCleanupHandler(deps: {
     deps.stopSubtitleWebsocket();
     deps.stopTexthookerService();
     deps.clearWindowsVisibleOverlayForegroundPollLoop();
+    deps.clearLinuxMpvFullscreenOverlayRefreshTimeouts();
     deps.destroyMainOverlayWindow();
     deps.destroyModalOverlayWindow();
     deps.destroyYomitanParserWindow();

src/main/runtime/app-lifecycle-main-cleanup.test.ts

@@ -20,6 +20,8 @@ test('cleanup deps builder returns handlers that guard optional runtime objects'
     stopTexthookerService: () => calls.push('stop-texthooker'),
     clearWindowsVisibleOverlayForegroundPollLoop: () =>
       calls.push('clear-windows-visible-overlay-foreground-poll-loop'),
+    clearLinuxMpvFullscreenOverlayRefreshTimeouts: () =>
+      calls.push('clear-linux-mpv-fullscreen-overlay-refresh-timeouts'),
     getMainOverlayWindow: () => ({
       isDestroyed: () => false,
       destroy: () => calls.push('destroy-main-overlay-window'),
@@ -88,6 +90,7 @@ test('cleanup deps builder returns handlers that guard optional runtime objects'
   assert.ok(calls.includes('stop-jellyfin-remote'));
   assert.ok(calls.includes('stop-discord-presence'));
   assert.ok(calls.includes('clear-windows-visible-overlay-foreground-poll-loop'));
+  assert.ok(calls.includes('clear-linux-mpv-fullscreen-overlay-refresh-timeouts'));
   assert.equal(reconnectTimer, null);
   assert.equal(immersionTracker, null);
 });
@@ -103,6 +106,7 @@ test('cleanup deps builder skips destroyed yomitan window', () => {
     stopSubtitleWebsocket: () => {},
     stopTexthookerService: () => {},
     clearWindowsVisibleOverlayForegroundPollLoop: () => {},
+    clearLinuxMpvFullscreenOverlayRefreshTimeouts: () => {},
     getMainOverlayWindow: () => ({
       isDestroyed: () => true,
       destroy: () => calls.push('destroy-main-overlay-window'),

src/main/runtime/app-lifecycle-main-cleanup.ts

@@ -26,6 +26,7 @@ export function createBuildOnWillQuitCleanupDepsHandler(deps: {
   stopSubtitleWebsocket: () => void;
   stopTexthookerService: () => void;
   clearWindowsVisibleOverlayForegroundPollLoop: () => void;
+  clearLinuxMpvFullscreenOverlayRefreshTimeouts: () => void;
   getMainOverlayWindow: () => DestroyableWindow | null;
   clearMainOverlayWindow: () => void;
   getModalOverlayWindow: () => DestroyableWindow | null;
@@ -67,6 +68,8 @@ export function createBuildOnWillQuitCleanupDepsHandler(deps: {
     stopTexthookerService: () => deps.stopTexthookerService(),
     clearWindowsVisibleOverlayForegroundPollLoop: () =>
       deps.clearWindowsVisibleOverlayForegroundPollLoop(),
+    clearLinuxMpvFullscreenOverlayRefreshTimeouts: () =>
+      deps.clearLinuxMpvFullscreenOverlayRefreshTimeouts(),
     destroyMainOverlayWindow: () => {
       const window = deps.getMainOverlayWindow();
       if (!window) return;

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

@@ -22,6 +22,7 @@ test('composeStartupLifecycleHandlers returns callable startup lifecycle handler
       stopSubtitleWebsocket: () => {},
       stopTexthookerService: () => {},
       clearWindowsVisibleOverlayForegroundPollLoop: () => {},
+      clearLinuxMpvFullscreenOverlayRefreshTimeouts: () => {},
       getMainOverlayWindow: () => null,
       clearMainOverlayWindow: () => {},
       getModalOverlayWindow: () => null,

src/main/runtime/linux-mpv-fullscreen-overlay-refresh.test.ts

@@ -0,0 +1,50 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  clearLinuxMpvFullscreenOverlayRefreshTimeouts,
+  scheduleLinuxVisibleOverlayFullscreenRefreshBurst,
+} from './linux-mpv-fullscreen-overlay-refresh';
+
+test('linux mpv fullscreen overlay refresh burst schedules overlay refresh work on linux', async () => {
+  const originalPlatformDescriptor = Object.getOwnPropertyDescriptor(process, 'platform');
+  Object.defineProperty(process, 'platform', {
+    configurable: true,
+    value: 'linux',
+  });
+
+  const calls: string[] = [];
+
+  try {
+    scheduleLinuxVisibleOverlayFullscreenRefreshBurst({
+      overlayManager: {
+        getMainWindow: () =>
+          ({
+            hide: () => calls.push('hide'),
+            isDestroyed: () => false,
+            isVisible: () => true,
+            showInactive: () => calls.push('showInactive'),
+          }) as never,
+        getVisibleOverlayVisible: () => true,
+      },
+      overlayVisibilityRuntime: {
+        updateVisibleOverlayVisibility: () => calls.push('updateVisibleOverlayVisibility'),
+      },
+      ensureOverlayWindowLevel: () => calls.push('ensureOverlayWindowLevel'),
+    });
+
+    const deadline = Date.now() + 200;
+    while (!calls.includes('updateVisibleOverlayVisibility') && Date.now() < deadline) {
+      await new Promise((resolve) => setTimeout(resolve, 5));
+    }
+
+    assert.ok(calls.includes('updateVisibleOverlayVisibility'));
+    assert.ok(calls.includes('hide'));
+    assert.ok(calls.includes('showInactive'));
+    assert.ok(calls.includes('ensureOverlayWindowLevel'));
+  } finally {
+    clearLinuxMpvFullscreenOverlayRefreshTimeouts();
+    if (originalPlatformDescriptor) {
+      Object.defineProperty(process, 'platform', originalPlatformDescriptor);
+    }
+  }
+});

src/main/runtime/linux-mpv-fullscreen-overlay-refresh.ts

@@ -0,0 +1,70 @@
+type LinuxMpvFullscreenOverlayWindow = {
+  hide: () => void;
+  isDestroyed: () => boolean;
+  isVisible: () => boolean;
+  showInactive: () => void;
+};
+
+export type LinuxMpvFullscreenOverlayRefreshDeps = {
+  overlayManager: {
+    getMainWindow: () => LinuxMpvFullscreenOverlayWindow | null;
+    getVisibleOverlayVisible: () => boolean;
+  };
+  overlayVisibilityRuntime: {
+    updateVisibleOverlayVisibility: () => void;
+  };
+  ensureOverlayWindowLevel: (window: LinuxMpvFullscreenOverlayWindow) => void;
+};
+export type CancelLinuxMpvFullscreenOverlayRefreshBurst = () => void;
+
+const LINUX_MPV_FULLSCREEN_OVERLAY_REFRESH_DELAYS_MS = [0, 50, 150, 300, 600] as const;
+let linuxMpvFullscreenOverlayRefreshTimeouts: Array<ReturnType<typeof setTimeout>> = [];
+
+function clearLinuxMpvFullscreenOverlayRefreshTimeouts(): void {
+  for (const timeout of linuxMpvFullscreenOverlayRefreshTimeouts) {
+    clearTimeout(timeout);
+  }
+  linuxMpvFullscreenOverlayRefreshTimeouts = [];
+}
+
+function refreshLinuxVisibleOverlayAfterMpvFullscreenChange(
+  deps: LinuxMpvFullscreenOverlayRefreshDeps,
+): void {
+  if (process.platform !== 'linux' || !deps.overlayManager.getVisibleOverlayVisible()) {
+    return;
+  }
+
+  deps.overlayVisibilityRuntime.updateVisibleOverlayVisibility();
+
+  const mainWindow = deps.overlayManager.getMainWindow();
+  if (!mainWindow || mainWindow.isDestroyed() || !mainWindow.isVisible()) {
+    return;
+  }
+
+  mainWindow.hide();
+  mainWindow.showInactive();
+  deps.ensureOverlayWindowLevel(mainWindow);
+}
+
+export function scheduleLinuxVisibleOverlayFullscreenRefreshBurst(
+  deps: LinuxMpvFullscreenOverlayRefreshDeps,
+): CancelLinuxMpvFullscreenOverlayRefreshBurst {
+  if (process.platform !== 'linux') {
+    return () => {};
+  }
+
+  clearLinuxMpvFullscreenOverlayRefreshTimeouts();
+  for (const delayMs of LINUX_MPV_FULLSCREEN_OVERLAY_REFRESH_DELAYS_MS) {
+    const refreshTimeout = setTimeout(() => {
+      linuxMpvFullscreenOverlayRefreshTimeouts = linuxMpvFullscreenOverlayRefreshTimeouts.filter(
+        (timeout) => timeout !== refreshTimeout,
+      );
+      refreshLinuxVisibleOverlayAfterMpvFullscreenChange(deps);
+    }, delayMs);
+    refreshTimeout.unref?.();
+    linuxMpvFullscreenOverlayRefreshTimeouts.push(refreshTimeout);
+  }
+  return clearLinuxMpvFullscreenOverlayRefreshTimeouts;
+}
+
+export { clearLinuxMpvFullscreenOverlayRefreshTimeouts };

src/renderer/handlers/keyboard.test.ts

@@ -1168,6 +1168,32 @@ test('session binding: copy subtitle multiple captures follow-up digit locally',
   }
 });
 
+test('session binding: mine sentence multiple captures modified follow-up digit locally', async () => {
+  const { handlers, testGlobals } = createKeyboardHandlerHarness();
+
+  try {
+    await handlers.setupMpvInputForwarding();
+    handlers.updateSessionBindings([
+      {
+        sourcePath: 'shortcuts.mineSentenceMultiple',
+        originalKey: 'Ctrl+Shift+S',
+        key: { code: 'KeyS', modifiers: ['ctrl', 'shift'] },
+        actionType: 'session-action',
+        actionId: 'mineSentenceMultiple',
+      },
+    ] as never);
+
+    testGlobals.dispatchKeydown({ key: 'S', code: 'KeyS', ctrlKey: true, shiftKey: true });
+    testGlobals.dispatchKeydown({ key: '#', code: 'Digit3', ctrlKey: true, shiftKey: true });
+
+    assert.deepEqual(testGlobals.sessionActions, [
+      { actionId: 'mineSentenceMultiple', payload: { count: 3 } },
+    ]);
+  } finally {
+    testGlobals.restore();
+  }
+});
+
 test('keyboard mode: h moves left when popup is closed', async () => {
   const { ctx, handlers, testGlobals } = createKeyboardHandlerHarness();
 

src/renderer/handlers/keyboard.ts

@@ -176,13 +176,17 @@ export function createKeyboardHandlers(
       return true;
     }
 
-    if (!/^[1-9]$/.test(e.key) || e.ctrlKey || e.metaKey || e.altKey || e.shiftKey) {
+    const digit = /^[1-9]$/.test(e.key)
+      ? e.key
+      : (e.code.match(/^(?:Digit|Numpad)([1-9])$/)?.[1] ?? null);
+
+    if (!digit) {
       e.preventDefault();
       return true;
     }
 
     e.preventDefault();
-    const count = Number(e.key);
+    const count = Number(digit);
     const actionId = pendingNumericSelection.actionId;
     cancelPendingNumericSelection(false);
     void window.electronAPI.dispatchSessionAction(actionId, { count });

src/token-merger.ts

@@ -177,8 +177,7 @@ export function mergeTokens(
   }
 
   const result: MergedToken[] = [];
-  const normalizedSourceText =
-    typeof sourceText === 'string' ? sourceText.replace(/\r?\n/g, ' ').trim() : null;
+  const normalizedSourceText = normalizeSourceTextForTokenOffsets(sourceText);
   let charOffset = 0;
   let sourceCursor = 0;
   let lastStandaloneToken: Token | null = null;
@@ -191,7 +190,9 @@ export function mergeTokens(
 
   for (const token of tokens) {
     const matchedStart =
-      normalizedSourceText !== null ? normalizedSourceText.indexOf(token.word, sourceCursor) : -1;
+      typeof normalizedSourceText === 'string'
+        ? normalizedSourceText.indexOf(token.word, sourceCursor)
+        : -1;
     const start = matchedStart >= sourceCursor ? matchedStart : charOffset;
     const end = start + token.word.length;
     charOffset = end;
@@ -297,9 +298,32 @@ function isKanaChar(char: string): boolean {
   );
 }
 
+function isKanaCandidateIgnorableChar(char: string): boolean {
+  return /^[\s.,!?;:()[\]{}"'`、。！？…‥・「」『』（）［］｛｝〈〉《》【】―-]$/u.test(char);
+}
+
 function isKanaOnlyText(text: string): boolean {
   const normalized = text.trim();
-  return normalized.length > 0 && Array.from(normalized).every((char) => isKanaChar(char));
+  if (normalized.length === 0) {
+    return false;
+  }
+
+  let hasKana = false;
+  for (const char of normalized) {
+    if (isKanaChar(char)) {
+      hasKana = true;
+      continue;
+    }
+    if (!isKanaCandidateIgnorableChar(char)) {
+      return false;
+    }
+  }
+
+  return hasKana;
+}
+
+function normalizeSourceTextForTokenOffsets(sourceText: string | undefined): string | undefined {
+  return typeof sourceText === 'string' ? sourceText.replace(/\r?\n/g, ' ').trim() : undefined;
 }
 
 export function isNPlusOneCandidateToken(
@@ -362,6 +386,18 @@ function isNPlusOneWordCountToken(
   return true;
 }
 
+function isNPlusOneSentenceLengthToken(
+  token: MergedToken,
+  pos1Exclusions: ReadonlySet<string> = N_PLUS_ONE_IGNORED_POS1,
+  pos2Exclusions: ReadonlySet<string> = N_PLUS_ONE_IGNORED_POS2,
+): boolean {
+  if (!isNPlusOneWordCountToken(token, pos1Exclusions, pos2Exclusions)) {
+    return false;
+  }
+
+  return token.isKnown || isNPlusOneCandidateToken(token, pos1Exclusions, pos2Exclusions);
+}
+
 function isSentenceBoundaryToken(token: MergedToken): boolean {
   if (token.partOfSpeech !== PartOfSpeech.symbol) {
     return false;
@@ -394,8 +430,7 @@ export function markNPlusOneTargets(
     return [];
   }
 
-  const normalizedSourceText =
-    typeof sourceText === 'string' ? sourceText.replace(/\r?\n/g, ' ').trim() : undefined;
+  const normalizedSourceText = normalizeSourceTextForTokenOffsets(sourceText);
 
   const markedTokens = tokens.map((token) => ({
     ...token,
@@ -414,7 +449,7 @@ export function markNPlusOneTargets(
     for (let i = start; i < endExclusive; i++) {
       const token = markedTokens[i];
       if (!token) continue;
-      if (isNPlusOneWordCountToken(token, pos1Exclusions, pos2Exclusions)) {
+      if (isNPlusOneSentenceLengthToken(token, pos1Exclusions, pos2Exclusions)) {
         sentenceWordCount += 1;
       }
 

src/window-trackers/hyprland-tracker.ts

@@ -302,11 +302,10 @@ export class HyprlandWindowTracker extends BaseWindowTracker {
   }
 
   private scheduleGeometryPollBurst(): void {
-    this.pollGeometry();
     for (const timeout of this.pollTimeouts) {
       clearTimeout(timeout);
     }
-    this.pollTimeouts = [50, 150, 300].map((delayMs) => {
+    this.pollTimeouts = [0, 50, 150, 300].map((delayMs) => {
       const pollTimeout = setTimeout(() => {
         this.pollTimeouts = this.pollTimeouts.filter((timeout) => timeout !== pollTimeout);
         this.pollGeometry();