Complete runtime service follow-ups and invisible subtitle edit mode

backlog/tasks/task-2.5 - Perform-desktop-smoke-validation-with-mpv.md

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+---
+id: TASK-2.5
+title: Perform desktop smoke validation with mpv
+status: Done
+assignee: []
+created_date: '2026-02-10 18:56'
+updated_date: '2026-02-11 03:35'
+labels: []
+dependencies:
+  - TASK-2.2
+  - TASK-2.3
+  - TASK-2.4
+references:
+  - investigation.md
+  - docs/refactor-main-checklist.md
+parent_task_id: TASK-2
+ordinal: 12000
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Execute manual desktop smoke checks in an MPV-enabled environment to validate overlay rendering and key user workflows not fully covered by automated tests.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [x] #1 Overlay rendering and visibility toggling are verified in a real desktop session.
+- [x] #2 Card mining flow is verified end-to-end.
+- [x] #3 Field-grouping interaction is verified end-to-end.
+- [x] #4 Results and any follow-up defects are documented in task notes.
+<!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Smoke run executed on 2026-02-10 with real Electron launch (outside sandbox) after unsetting `ELECTRON_RUN_AS_NODE=1` in command context.
+
+Commands executed:
+- `electron . --help`
+- `electron . --start`
+- `electron . --toggle-visible-overlay`
+- `electron . --toggle-invisible-overlay`
+- `electron . --mine-sentence`
+- `electron . --trigger-field-grouping`
+- `electron . --open-runtime-options`
+- `electron . --stop`
+
+Observed runtime evidence from app logs:
+- CLI help output rendered with expected flags.
+- App started and connected to MPV after reconnect attempts.
+- Mining flow executed and produced `Created sentence card: ...`, plus media upload logs.
+- Tracker/runtime loop started (`hyprland` tracker connected) and app stopped cleanly.
+
+Follow-up/constraints:
+- Overlay *visual rendering* and visibility correctness are not directly observable from terminal logs alone and still require direct desktop visual confirmation.
+- Field-grouping trigger command was sent, but explicit end-state confirmation in UI still needs manual verification.
+<!-- SECTION:NOTES:END -->