yellowjacket/.planning/STATE.md

gsd_state_version, milestone, milestone_name, status, last_updated, progress

gsd_state_version	milestone	milestone_name	status	last_updated	progress
1.0	v1.0	milestone	completed	2026-02-28T17:16:32.158Z	total_phases completed_phases total_plans completed_plans 1 1 1 1

YellowJacket — Consolidation Milestone State

Project Reference

Core value: The music player works reliably and feels solid — every interaction is correct, responsive, and trustworthy. Current focus: Phase 1 complete, ready for Phase 2 planning. Milestone: Consolidation (correctness, performance, code quality, UX polish, test coverage)

Current Position

Phase: 01-concurrency-race-fixes (complete) Plan: 1/1 (complete) Status: Milestone complete

Phase Progress: [#.......] 1/8 phases complete

Performance Metrics

Metric	Value
Phases complete	1/8
Plans complete	1/1 (Phase 1)
Requirements delivered	4/26
Tests added	0
Bugs fixed	4
01-01 duration	11 min

Accumulated Context

Key Decisions

Decision	Rationale	Phase
Fix races before tests	Can't run -race-clean tests with active data races	Phase 1 → 3
PRAGMAs with test infra	NewTestDB must mirror production DB setup; PRAGMAs change production NewDB	Phase 3
Tests before refactoring	Research unanimously recommends characterization tests as safety net	Phase 4-5 → 6-7
SQL consolidation after DB tests	FTS5 search tests verify VIEW doesn't change ranking	Phase 5 → 6
Frontend last	Backend API should be stable before frontend adapts	Phase 8
Release mutex before Wails runtime calls	Library/Playlist SetContext releases lock before registerEventHandlers/migrateExistingPlaylists to avoid blocking	Phase 1
Player SetContext single-lock	Collapsed double-lock to prevent partially-initialized observable state	Phase 1

TODOs

• Plan Phase 1 (complete)
• Execute Phase 1 Plan 01 (complete)
• Validate sqlc + SQLite VIEW + FTS5 compatibility during Phase 6 planning (research flag)
• Design queue test architecture during Phase 4 planning (research flag)
• Determine library scan test fixture strategy during Phase 5 planning (research flag)
• Measure startup time with large library before Phase 7 lazy loading work

Blockers

None currently.

Warnings

• Player lock ordering (p.mu before speaker.Lock(), goroutine dispatch in beep callback) — do NOT refactor lock-sensitive paths; extract pure logic only
• modernc.org/libc version must match exactly when updating modernc.org/sqlite
• @lit-labs/signals is experimental (v0.2.0) — not blocking but noted

Session Continuity

Last Session

Date: 2026-02-28 What happened: Executed Phase 1 Plan 01 — added mutex protection to all SetContext methods across Queue, Library, Playlist, and Player Where we stopped: Completed 01-01-PLAN.md (all tasks, verification passed) Next action: /gsd-plan-phase 2 to create execution plan for Backend Correctness

Context for Next Session

• Phase 1 complete: all SetContext data races eliminated (CORR-01 through CORR-04)
• All four packages pass go test -race, go vet, golangci-lint with 0 issues
• Library and Playlist gained struct-level mutexes; Queue and Player already had them
• Ready for Phase 2 (Backend Correctness) — error handling, config permissions, MPRIS errors

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State initialized: 2026-02-27 Last updated: 2026-02-28