---
gsd_state_version: 1.0
milestone: v1.0
milestone_name: milestone
status: Ready to execute
stopped_at: Completed 02-02-PLAN.md (Server struct refactor, test isolation with NewTestServer)
last_updated: "2026-03-24T07:39:15.372Z"
progress:
  total_phases: 4
  completed_phases: 2
  total_plans: 4
  completed_plans: 4
---

# Project State

## Project Reference

See: .planning/PROJECT.md (updated 2026-03-23)

**Core value:** Reliable, persistent visibility into which services need updating — data never disappears, and the dashboard is the one place you trust to show the full picture.
**Current focus:** Phase 02 — backend-refactor

## Current Position

Phase: 02 (backend-refactor) — EXECUTING
Plan: 2 of 2

## Performance Metrics

**Velocity:**

- Total plans completed: 0
- Average duration: —
- Total execution time: —

**By Phase:**

| Phase | Plans | Total | Avg/Plan |
|-------|-------|-------|----------|
| - | - | - | - |

**Recent Trend:**

- Last 5 plans: —
- Trend: —

*Updated after each plan completion*
| Phase 01 P01 | 2 | 2 tasks | 2 files |
| Phase 01-data-integrity P02 | 7 | 2 tasks | 2 files |
| Phase 02-backend-refactor P01 | 7min | 2 tasks | 7 files |
| Phase 02-backend-refactor P02 | 3min | 2 tasks | 4 files |

## Accumulated Context

### Decisions

Decisions are logged in PROJECT.md Key Decisions table.
Recent decisions affecting current work:

- Fix SQLite bugs before any other work — data trust is the #1 priority; bug-fix tests become the regression suite for the refactor
- Backend refactor must be behavior-neutral — all existing tests must pass before PostgreSQL is introduced
- No ORM or query builder — raw SQL per store implementation; 8 operations across 3 tables is too small to justify a dependency
- `DATABASE_URL` present activates PostgreSQL; absent falls back to SQLite with `DB_PATH` — no separate `DB_DRIVER` variable
- [Phase 01]: Use named-column UPSERT (ON CONFLICT DO UPDATE) to preserve tag_assignments child rows on re-insert
- [Phase 01]: Enable PRAGMA foreign_keys = ON in InitDB() before DDL to activate ON DELETE CASCADE for tag deletion
- [Phase 01-data-integrity]: Use MaxBytesReader + errors.As(*http.MaxBytesError) per-handler (not middleware) for request body size limiting — consistent with no-middleware architecture
- [Phase 01-data-integrity]: Oversized body tests need valid JSON prefix so decoder reads past 1MB limit; all-x bytes fail at byte 1 before MaxBytesReader triggers
- [Phase 02-backend-refactor]: Store interface with 9 methods is the persistence abstraction; SQLiteStore holds *sql.DB and sync.Mutex as struct fields (not package globals)
- [Phase 02-backend-refactor]: golang-migrate v4.19.1 database/sqlite sub-package confirmed to use modernc.org/sqlite (no CGO); single 0001 baseline migration uses CREATE TABLE IF NOT EXISTS for backward compatibility
- [Phase 02-backend-refactor]: Option B for test store access: internal helpers in export_test.go (TestUpsertEvent, TestGetUpdatesMap) instead of exported Store() accessor - keeps store field unexported
- [Phase 02-backend-refactor]: NewTestServer pattern: each test gets its own in-memory SQLite DB (RunMigrations + NewSQLiteStore + NewServer) - eliminates shared global state between tests

### Pending Todos

None yet.

### Blockers/Concerns

- Phase 3: Verify `pgx/v5/stdlib` import path against pkg.go.dev before writing PostgreSQL query strings
- Phase 3: Re-confirm `golang-migrate` v4.19.1 `database/sqlite` sub-package uses `modernc.org/sqlite` (not `mattn/go-sqlite3`) at implementation time

## Session Continuity

Last session: 2026-03-24T07:39:15.370Z
Stopped at: Completed 02-02-PLAN.md (Server struct refactor, test isolation with NewTestServer)
Resume file: None