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SubMiner/backlog/tasks/task-73 - MPV-plugin-split-into-modules-and-optimize-startup-command-runtime.md

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---
id: TASK-73
title: 'MPV plugin: split into modules and optimize startup/command runtime'
status: In Progress
assignee: []
created_date: '2026-02-28 20:50'
labels: []
dependencies: []
references:
- plugin/subminer/main.lua
- plugin/subminer/bootstrap.lua
- plugin/subminer/process.lua
- plugin/subminer/aniskip.lua
- plugin/subminer/environment.lua
- plugin/subminer/lifecycle.lua
- plugin/subminer/messages.lua
- plugin/subminer/ui.lua
- plugin/subminer/hover.lua
- plugin/subminer/options.lua
- plugin/subminer/state.lua
- plugin/subminer.conf
- scripts/test-plugin-start-gate.lua
- scripts/test-plugin-process-start-retries.lua
- launcher/commands/playback-command.ts
- launcher/mpv.ts
- launcher/mpv.test.ts
- launcher/smoke.e2e.test.ts
- Makefile
- package.json
- docs/mpv-plugin.md
- docs/installation.md
- docs/architecture.md
- README.md
priority: medium
---
## Description
<!-- SECTION:DESCRIPTION:BEGIN -->
Scope: Replace monolithic `plugin/subminer.lua` with modular plugin runtime; optimize command execution paths; align install/docs/tests; fix launcher smoke instability.
Delivered behavior:
- Full plugin cutover to `plugin/subminer/main.lua` + module directory (no runtime compatibility shim with old monolith file).
- Process/control command path moved toward async subprocess usage for non-start actions (`stop`, `toggle`, `settings`, restart stop leg), reducing synchronous blocking in mpv script runtime.
- AniSkip path guarded: lookup runs only in SubMiner context (launcher metadata, explicit script-message refresh, or detected running app), instead of every opened file.
- AniSkip lookup pipeline moved to async subprocess calls (no sync `ps`/`curl` on `file-loaded`) with deferred fetch after auto-start and session-level MAL/title/payload caching.
- Startup/runtime loading updated with lazy module initialization via bootstrap proxies.
- Plugin install flow updated to copy `plugin/subminer/` directory and remove legacy `~/.config/mpv/scripts/subminer.lua` file.
- Added plugin gate script wiring to package scripts (`test:plugin:src`) and launcher test flow.
- Smoke tests stabilized across sandbox environments where UNIX socket bind can return `EPERM` while preserving normal-path assertions.
- Playback command cleanup race fixed when mpv exits before exit-listener registration.
Risk/impact context:
- mpv plugin loading path changed from single-file to module directory; packaging/install paths must stay consistent with release assets.
- Async control/AniSkip path changes reduce blocking but can surface timing differences; regression checks added for cold start, file-load gating, and explicit refresh behavior.
<!-- SECTION:DESCRIPTION:END -->
## Final Summary
<!-- SECTION:FINAL_SUMMARY:BEGIN -->
AniSkip gate/async update delivered in plugin runtime:
- `plugin/subminer/lifecycle.lua`: deferred AniSkip fetch and overlay-start trigger.
- `plugin/subminer/aniskip.lua`: async lookup pipeline + context guard + session caches.
- `plugin/subminer/environment.lua`: async app-running detection with short cache.
- `plugin/subminer/messages.lua`: explicit script-message trigger wiring.
Regression coverage updated:
- `scripts/test-plugin-start-gate.lua` now verifies:
- no sync `ps`/`curl` on non-context file load
- no AniSkip network lookup on non-context file load
- script-message refresh forces async AniSkip lookup
Validation run:
- `bun run test:plugin:src` pass.
<!-- SECTION:FINAL_SUMMARY:END -->