docs: refresh stale guidance and shortcut references

docs/subagents/agents/codex-docs-review-20260222T094009Z-g8p2.md

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+# Agent: `codex-docs-review-20260222T094009Z-g8p2`
+
+- alias: `codex-docs-review`
+- mission: `Review README/docs for drift vs current code/scripts; patch stale or missing documentation.`
+- status: `done`
+- branch: `main`
+- started_at: `2026-02-22T09:40:09Z`
+- heartbeat_minutes: `5`
+
+## Current Work (newest first)
+- [2026-02-22T09:43:52Z] handoff: docs-only drift fixes landed; `bun run docs:build` passes.
+- [2026-02-22T09:42:40Z] test: `bun run docs:build` passed.
+- [2026-02-22T09:41:50Z] progress: patched stale guardrail docs, corrected DevTools shortcut docs, and documented `guessit` as optional AniSkip metadata enhancer.
+- [2026-02-22T09:40:09Z] intent: initialize session bookkeeping; audit README.md + docs/* against package scripts and current features.
+
+## Files Touched
+- `docs/subagents/agents/codex-docs-review-20260222T094009Z-g8p2.md`
+- `README.md`
+- `docs/development.md`
+- `docs/installation.md`
+- `docs/mpv-plugin.md`
+- `docs/shortcuts.md`
+- `docs/troubleshooting.md`
+
+## Assumptions
+- `Backlog.md` not configured in repo root, so no mandatory backlog ticket linkage for this pass.
+- Existing dirty worktree from other tasks should remain untouched.
+
+## Open Questions / Blockers
+- None.
+
+## Next Step
+- Await user review or follow-up docs scope.