# Agent: `codex-mpv-hover-token-highlight-20260221T231509Z-n8x2`

- alias: `codex-mpv-hover-token-highlight`
- mission: `Design and implement mpv OSD token hover highlighting fed from electron token hover state`
- status: `completed`
- branch: `main`
- started_at: `2026-02-21T23:15:09Z`
- heartbeat_minutes: `5`

## Current Work (newest first)
- [2026-02-21T23:33:04Z] handoff: implemented invisible-overlay-only hovered-token mpv OSD highlighting path with renderer IPC -> main -> mpv `osd-overlay`; build + targeted tests green.
- [2026-02-21T23:28:10Z] test: `bun run build`; `node --test dist/main/runtime/mpv-hover-highlight.test.js dist/core/services/ipc.test.js`; `node --test dist/renderer/subtitle-render.test.js`.
- [2026-02-21T23:24:20Z] edit: added `mpv-hover-highlight` runtime helper + tests and wired app state + IPC hover reporting + renderer token index datasets/hover reporting.
- [2026-02-21T23:18:40Z] progress: reviewed `Yomipv` selector hover render; feasible model is ASS re-render with per-token highlight and hitbox mapping.
- [2026-02-21T23:17:50Z] progress: created backlog `TASK-98`; traced renderer token DOM + IPC handlers + mpv protocol events; no existing hover-token IPC path.
- [2026-02-21T23:15:09Z] intent: read coordination + skills, create backlog linkage, inspect mpv/electron token highlight pipeline.

## Files Touched
- `backlog/tasks/task-98 - Add-mpv-OSD-hovered-token-highlighting-from-electron-token-state.md`
- `src/main/runtime/mpv-hover-highlight.ts`
- `src/main/runtime/mpv-hover-highlight.test.ts`
- `src/main.ts`
- `src/main/state.ts`
- `src/main/dependencies.ts`
- `src/core/services/ipc.ts`
- `src/core/services/ipc.test.ts`
- `src/preload.ts`
- `src/types.ts`
- `src/renderer/renderer.ts`
- `src/renderer/handlers/mouse.ts`
- `src/renderer/subtitle-render.ts`
- `src/renderer/state.ts`
- `docs/subagents/agents/codex-mpv-hover-token-highlight-20260221T231509Z-n8x2.md`

## Assumptions
- `osd-overlay` command path is available in connected mpv builds used by SubMiner.

## Open Questions / Blockers
- None.

## Next Step
- Wait for user validation in real mpv session; adjust highlight color/style if requested.
- [2026-02-22T00:30:37Z] follow-up fix: invisible renderer path now renders token spans (when tokenized payload exists) instead of plain text only; hover token index reporting now has actual token targets.
- [2026-02-22T00:30:37Z] test: rebuilt and reran `dist/main/runtime/mpv-hover-highlight.test.js`, `dist/core/services/ipc.test.js`, `dist/renderer/subtitle-render.test.js` (pass).
- [2026-02-22T00:32:45Z] follow-up fix: overlay ASS now redraws full subtitle line and recolors hovered token instead of rendering only the hovered glyph; removes separate-character artifact.