fix(renderer): keep controller input active with sidebar open

backlog/tasks/task-231 - Restore-controller-input-while-subtitle-sidebar-is-open.md

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+---
+id: TASK-231
+title: Restore controller input while subtitle sidebar is open
+status: Done
+assignee:
+  - '@codex'
+created_date: '2026-03-24 00:15'
+updated_date: '2026-03-24 00:15'
+labels:
+  - bug
+  - controller
+  - subtitle-sidebar
+  - overlay
+dependencies: []
+references:
+  - /home/sudacode/projects/japanese/SubMiner/src/renderer/renderer.ts
+  - /home/sudacode/projects/japanese/SubMiner/src/renderer/controller-interaction-blocking.ts
+  - /home/sudacode/projects/japanese/SubMiner/src/renderer/controller-interaction-blocking.test.ts
+priority: high
+ordinal: 54900
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+
+When keyboard-only mode is active, opening the subtitle sidebar should not disable controller navigation and lookup/mining controls. Restore controller input while the sidebar is open, while keeping true modal dialogs blocking controller actions.
+
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+
+<!-- AC:BEGIN -->
+
+- [x] #1 Opening the subtitle sidebar does not block controller input for keyboard-only mode actions.
+- [x] #2 Controller-select/debug and other true modal dialogs still block controller actions while open.
+- [x] #3 Focused regression coverage exists for the sidebar-open controller gating rule.
+
+<!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+
+Root cause: renderer gamepad polling used the broad `isAnyModalOpen()` check as its interaction gate, and that list includes `subtitleSidebarModalOpen`. The subtitle sidebar is non-modal for controller usage, so gamepad input was being suppressed whenever the sidebar was visible.
+
+Fixed by extracting a dedicated controller-interaction blocking helper that excludes the subtitle sidebar but keeps the existing blocking behavior for true modal dialogs.
+
+<!-- SECTION:NOTES:END -->
+
+## Final Summary
+
+<!-- SECTION:FINAL_SUMMARY:BEGIN -->
+
+Restored controller input while the subtitle sidebar is open by switching gamepad polling to a dedicated modal-blocking rule that leaves the sidebar controller-passive. Added a regression test covering the sidebar-open exception and preserving hard blocks for actual modal dialogs.
+
+<!-- SECTION:FINAL_SUMMARY:END -->