fix: restore linux multi-copy digit capture

backlog/tasks/task-292 - Restore-Linux-multi-subtitle-copy-digit-capture.md

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+---
+id: TASK-292
+title: Restore Linux multi-subtitle copy digit capture
+status: Done
+assignee:
+  - '@codex'
+created_date: '2026-04-25 21:31'
+updated_date: '2026-04-25 21:36'
+labels:
+  - bug
+  - linux
+  - shortcuts
+  - clipboard
+dependencies: []
+priority: high
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+On Linux, the copy-subtitle-multiple shortcut opens the numeric prompt but the follow-up digit is not captured, so the flow times out. User confirmed `wl-copy` itself is installed and working, so investigate the shortcut/digit capture path and restore multi-line subtitle copy without regressing existing session action behavior.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [x] #1 Linux copy-subtitle-multiple shortcut accepts a follow-up digit and copies that number of recent subtitle lines instead of timing out.
+- [x] #2 The fix avoids depending on Linux Electron global shortcut digit registration for the follow-up numeric selection when a renderer-visible session can handle it.
+- [x] #3 Regression tests cover the Linux multi-copy shortcut/digit flow and existing non-Linux/global shortcut behavior remains intact.
+<!-- AC:END -->
+
+## Implementation Plan
+
+<!-- SECTION:PLAN:BEGIN -->
+1. Add failing regression coverage for Linux copy-subtitle-multiple local shortcut fallback starting renderer/session numeric selection instead of main-process digit globalShortcut capture.
+2. Patch the overlay shortcut fallback/runtime path so Linux visible-overlay multi-copy and mine-sentence-multiple can dispatch session-action numeric selection when renderer handling is available, while preserving main-process numeric sessions for CLI/non-renderer paths.
+3. Run targeted tests for shortcut fallback, overlay runtime, and renderer keyboard numeric selection; then run typecheck or a wider focused gate if needed.
+4. Update task acceptance criteria/final notes after verification.
+<!-- SECTION:PLAN:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Implemented the approved path by keeping multi-step numeric overlay shortcuts out of the main-process local fallback. The visible overlay now receives the original keydown and uses the existing renderer/session-action numeric selection flow for follow-up digits, avoiding Linux Electron globalShortcut digit capture for multi-copy and mine-sentence-multiple. Verification: targeted shortcut/renderer tests and changelog lint pass. `bun run typecheck` is currently blocked by unrelated existing errors in CLI/AniList dictionary-candidate work and `src/main/dependencies.ts` manual-selection API shape.
+<!-- SECTION:NOTES:END -->
+
+## Final Summary
+
+<!-- SECTION:FINAL_SUMMARY:BEGIN -->
+Restored Linux multi-line subtitle copy by preventing main-process overlay shortcut fallback from consuming multi-step numeric shortcuts (`copySubtitleMultiple` and `mineSentenceMultiple`). Those shortcuts now fall through to the visible overlay renderer, where the existing session binding flow prompts for a digit and dispatches the counted session action locally instead of relying on Electron globalShortcut digit registration. Added regression coverage for the fallback behavior and renderer follow-up digit dispatch, plus a changelog fragment.
+
+Verification: `bun test src/core/services/overlay-shortcut-handler.test.ts src/renderer/handlers/keyboard.test.ts`; `bun run changelog:lint`. Full `bun run typecheck` was attempted but is blocked by unrelated current worktree errors in CLI/AniList dictionary-candidate tests/types and `src/main/dependencies.ts`.
+<!-- SECTION:FINAL_SUMMARY:END -->