---
gsd_state_version: 1.0
milestone: v1.0
milestone_name: milestone
status: planning
stopped_at: Completed 01-02-PLAN.md
last_updated: "2026-03-10T16:51:31Z"
last_activity: 2026-03-10 — Completed 01-02-PLAN.md (Core Infrastructure)
progress:
  total_phases: 6
  completed_phases: 0
  total_plans: 18
  completed_plans: 2
  percent: 11
---

# Project State

## Project Reference

See: .planning/PROJECT.md (updated 2026-03-10)

**Core value:** The satisfying "aha!" moment when you spot a valid connection and clear a pair — the core matching loop must feel smooth and rewarding.
**Current focus:** Phase 1: Core Foundation

## Current Position

Phase: 1 of 6 (Core Foundation)
Plan: 2 of 3 in current phase
Status: In progress
Last activity: 2026-03-10 — Completed 01-02-PLAN.md (Core Infrastructure)

Progress: [█░░░░░░░░░] 11%

## Performance Metrics

**Velocity:**
- Total plans completed: 2
- Average duration: 6.5 min
- Total execution time: 0.2 hours

**By Phase:**

| Phase | Plans | Total | Avg/Plan |
|-------|-------|-------|----------|
| 01-core-foundation | 2 | 3 | 6.5 min |

**Recent Trend:**
- Last 5 plans: 01-01 (6 min), 01-02 (7 min)
- Trend: Consistent execution time

*Updated after each plan completion*

## Accumulated Context

### Decisions

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

- [Init]: Web browser first, no backend, single level for v1
- [01-01]: Manual file creation instead of `npm create vite` due to interactive prompt issues
- [01-01]: Vitest configured with node environment for unit tests
- [01-01]: Used `as const` assertion for CONFIG to enable type inference
- [01-02]: Used `object` constraint for TypedEventEmitter generic to support interface types
- [01-02]: Added helper methods (getTickLength, getRafId, isRunning) to GameLoop for testability

### Pending Todos

[From .planning/todos/pending/ — ideas captured during sessions]

None yet.

### Blockers/Concerns

[Issues that affect future work]

None yet.

## Session Continuity

Last session: 2026-03-10T16:51:31Z
Stopped at: Completed 01-02-PLAN.md
Resume file: .planning/phases/01-core-foundation/01-02-SUMMARY.md