Add overlay gamepad support for keyboard-only mode (#17)

backlog/tasks/task-159 - Add-overlay-controller-support-for-keyboard-only-mode.md

@@ -0,0 +1,74 @@
+---
+id: TASK-159
+title: Add overlay controller support for keyboard-only mode
+status: Done
+assignee:
+  - codex
+created_date: '2026-03-11 00:30'
+updated_date: '2026-03-11 04:05'
+labels:
+  - enhancement
+  - renderer
+  - overlay
+  - input
+dependencies:
+  - TASK-86
+references:
+  - src/renderer/handlers/keyboard.ts
+  - src/renderer/renderer.ts
+  - src/renderer/state.ts
+  - src/renderer/index.html
+  - src/renderer/style.css
+  - src/preload.ts
+  - src/types.ts
+  - src/config/definitions/defaults-core.ts
+  - src/config/definitions/options-core.ts
+  - src/config/definitions/template-sections.ts
+  - config.example.jsonc
+priority: medium
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+
+Add Chrome Gamepad API support to the visible overlay as a supplement to keyboard-only mode. By default SubMiner should bind to the first available controller, allow the user to pick and persist a preferred controller, expose a raw-input debug modal, and map controller actions onto the existing keyboard-only/Yomitan flow without breaking keyboard input. Also fix the current keyboard-only cleanup bug so the selected-token highlight clears when keyboard-only mode turns off or when the Yomitan popup closes.
+
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+
+<!-- AC:BEGIN -->
+
+- [x] #1 Controller input is ignored unless keyboard-only mode is enabled, except the controller binding for toggling keyboard-only mode itself.
+- [x] #2 Default logical mappings work: smooth popup scroll, token selection, lookup toggle/close, mining, Yomitan audio navigation/play, and mpv play/pause.
+- [x] #3 Controller config supports named logical bindings plus tuning knobs (preferred controller, deadzones, smooth-scroll speed/repeat), not raw axis/button maps.
+- [x] #4 `Alt+C` opens a controller selection modal listing connected controllers; saving a choice persists the preferred controller for next launch.
+- [x] #5 `Alt+Shift+C` opens a debug modal showing live raw controller axes/buttons as seen by SubMiner.
+- [x] #6 Keyboard-only selection highlight clears immediately when keyboard-only mode is disabled or the Yomitan popup closes.
+- [x] #7 Renderer/config regression tests cover controller gating, mappings, modal behavior, persisted selection, and highlight cleanup.
+- [x] #8 Docs/config example describe the controller feature and new shortcuts.
+
+<!-- AC:END -->
+
+## Implementation Notes
+
+- Added renderer-side gamepad polling and logical action mapping in `src/renderer/handlers/gamepad-controller.ts`.
+- Added controller select/debug modals, persisted preferred-controller IPC, and top-level `controller` config defaults/schema/template output.
+- Added a transient in-overlay controller status indicator when a controller is first detected.
+- Tuned controller defaults and routing after live testing: d-pad fallback navigation, slower repeat timing, DOM-backed popup-open detection, and direct pixel scroll/audio-source popup bridge commands.
+- Reused existing keyboard-only lookup/mining/navigation flows so controller input stays a supplement to keyboard-only mode instead of a parallel input path.
+- Verified keyboard-only highlight cleanup on mode-off and popup-close paths with renderer tests.
+
+## Verification
+
+- `bun test src/config/config.test.ts src/config/definitions/domain-registry.test.ts src/renderer/handlers/keyboard.test.ts src/renderer/handlers/gamepad-controller.test.ts src/renderer/modals/controller-select.test.ts src/renderer/modals/controller-debug.test.ts src/core/services/ipc.test.ts`
+- `bun test src/main/runtime/composers/ipc-runtime-composer.test.ts`
+- `bun run generate:config-example`
+- `bun run typecheck`
+- `bun run docs:test`
+- `bun run test:fast`
+- `bun run test:env`
+- `bun run build`
+- `bun run docs:build`
+- `bun run test:smoke:dist`