# Checkpoint 2 Action Summary (T+40 min)

**Coordinator:** claude-haiku
**Generated:** 2026-02-06 T+40 UTC
**Next Checkpoint:** T+55 (15 minutes from now)

---

## IMMEDIATE ACTIONS (Next 5 minutes)

### 1. Validate Wave 2 Phase 1 Completion
**Check TaskList:** Tasks #6, #7, #8

Expected status: In Phase 2 (MSW handlers + fixtures done)

```bash
# Command for any team to verify their Phase 1 completion:
git log --oneline -5 | grep -i "phase\|gap"
```

**Success signals:**
- ✅ MSW handlers with /api/v1/* endpoints (Gap 5.3)
- ✅ Temporal activities.go created (Gap 5.4)
- ✅ Table test data (tableTestItems) added (Gap 5.5)

### 2. Validate Wave 3 Phase 1 Is Executing
**Check TaskList:** Tasks #20, #21, #22

Expected status: In Phase 1 (setup + fixture creation)

**Success signals:**
- ✅ mockEndpoints array started in test data (Gap 5.6)
- ✅ useGPUCompute hook skeleton created (Gap 5.7)
- ✅ No blocker messages received

### 3. Git Status Verification
```bash
# No merge conflicts, all agents writing to separate files
git status --short
```

Expected: M frontend/apps/web/src/__tests__/mocks/handlers.ts, data.ts (Wave 2)
         M frontend/apps/web/src/__tests__/api/endpoints.test.ts (Wave 3 starting)

---

## MONITORING FOCUS: CRITICAL PATH (Gap 5.7 GPU Shaders)

This is the **longest task (40 minutes)** and determines overall completion.

### Expected Progress by T+45:
- ✅ WebGPU device detection code drafted
- ✅ WGSL shader file created (stub)
- ✅ useGPUCompute hook initialized
- 🟡 Force-directed algorithm implementation starting

### Timeline Check:
- **T+40 to T+52:** Phase 1 (WebGPU setup - 12 min)
- **T+52 to T+64:** Phase 2 (WebGL fallback - 12 min)
- **T+64 to T+74:** Phase 3 (Performance testing - 10 min)
- **T+74 to T+80:** Phase 4 (Integration - 6 min)

**If behind by 5+ min:** Flag for mid-course correction

---

## DECISION TREE: HANDLING BLOCKERS

### If Gap 5.3 Blocker (Integration Tests)
→ Check: MSW handlers for /api/v1/search, /api/v1/reports/export exist?
→ If missing: Provide handler code from PHASE_5_3_5_5_IMPLEMENTATION_PLAN.md (lines 21-50)
→ Message team with: "Provide handlers for [endpoint]. Reference code sketch at line X."

### If Gap 5.4 Blocker (Temporal)
→ Check: activities.go basic structure in place?
→ If missing: Provide skeleton from implementation plan (lines 114-150)
→ Message team with: "Create QuerySnapshot, CreateSnapshot, UploadSnapshot activities. See code sketch at line Y."

### If Gap 5.5 Blocker (Accessibility)
→ Check: tableTestItems array in testData.ts with 7+ items?
→ If missing: Provide example structure (10 lines) from implementation plan
→ Message team with: "Add tableTestItems array with schema [name, type, status, priority]. See example at line Z."

### If Gap 5.6 Blocker (API Endpoints)
→ Check: describe.skip un-skipped at line 21 of endpoints.test.ts?
→ If missing: Direct to implementation plan (lines 423-450)
→ Message team with: "Un-skip describe and implement 15+ tests. Reference code sketch at line."

### If Gap 5.7 Blocker (GPU Shaders) ⚠️ CRITICAL
→ Check: Compilation errors in TypeScript?
→ If WebGPU not detected: Provide fallback device detection code
→ If shader compilation fails: Verify WGSL syntax matches spec
→ Message team with: "Check WGSL shader syntax. If no WebGPU, implement WebGL fallback first (Phase 2)."

### If Gap 5.8 Blocker (Spatial Indexing)
→ Check: Any dependency on Gap 5.6 (should be none)?
→ If blocked on Gap 5.6: Proceed independently - no dependency
→ Provide R-tree spatial index skeleton code if needed

---

## CONFIRMATION PROTOCOL

**When each team completes a Phase:**

Expected format in TaskUpdate or message:
```
"Phase X complete: [File changes summary].
Ready for Phase X+1.
Status: [N/N tests passing or ready for next phase]"
```

Example from Gap 5.3:
```
"Phase 1 complete: handlers.ts (3 endpoints), data.ts (test fixtures), setup.ts (cleanup).
Ready for Phase 2 (re-enable CRUD tests).
Status: MSW setup verified, no blocker."
```

---

## WAVE 4 READINESS (T+55 trigger)

When all Wave 2 gaps report Phase 2+ complete:

**Validation Checklist (to execute then):**
1. ✅ Run 5x consecutive test suites (no flakes)
2. ✅ Verify coverage ≥85% across all gaps
3. ✅ GPU performance: 10k nodes <100ms
4. ✅ Spatial indexing: 5k edges <50ms
5. ✅ WCAG 2.1 AA compliance on Gap 5.5
6. ✅ Create 5 comprehensive commits (Gap families)

---

## TIMELINE TRACKING

| Time | Expected Milestone | Action |
|------|-------------------|--------|
| T+40 | ← **YOU ARE HERE** | Validate Wave 2 Phase 1, Wave 3 Phase 1 active |
| T+45 | Wave 2 Phase 2 active | Monitor for Mid-course issues |
| T+50 | Wave 2 Phase 2-3 done | Validate progress, gap closure |
| T+55 | Gap 5.4 test passing | **TRIGGER Wave 4 prep, Checkpoint 3** |
| T+60 | Wave 2 complete | All 15 tests across 5.3-5.5 passing |
| T+65 | Wave 3 Phase 2-3 active | GPU shaders Phase 2 (WebGL) underway |
| T+75 | Wave 3 Phase 3-4 active | Performance validation + integration |
| T+80 | All gaps complete | Launch Wave 4 validation |
| T+85 | Wave 4 validation done | All 80+ tests passing, final commits ready |
| T+90 | **PHASE 5 COMPLETE** | 🎉 Final report generated |

---

## RESOURCES FOR QUICK ESCALATION

### If asked "What's the next step?"
→ Provide: `/docs/reports/PHASE_5_GAPS_5_6_5_7_5_8_IMPLEMENTATION_PLAN.md` (sections 1-3)
→ Code sketches at lines 423-651 (all 3 gaps fully specified)

### If asked "How do we handle GPU shaders?"
→ Provide: Implementation plan sections 2 (lines 487-575)
→ Quick ref: `/docs/reference/PHASE_5_GAPS_QUICK_REFERENCE.md` (GPU section)

### If asked "What about accessibility validation?"
→ Provide: Implementation plan section 3 (lines 237-368)
→ WCAG checklist: `/docs/guides/PHASE_5_GAPS_IMPLEMENTATION_QUICK_START.md`

---

## SUCCESS CRITERIA FOR NEXT 15 MIN

**By T+55, validate:**
1. [ ] Gap 5.3: 4/8 tests passing (minimum Phase 2 progress)
2. [ ] Gap 5.4: activities.go created + test running (minimum Phase 1-2)
3. [ ] Gap 5.5: 3/6 tests passing (minimum Phase 2 progress)
4. [ ] Gap 5.6: Phase 1 done (fixtures + handlers ready)
5. [ ] Gap 5.7: WebGPU Phase 1 underway (hook + shader skeleton)
6. [ ] Gap 5.8: Standing by (no dependency blocker, can start at T+60)

**If all 6 above:** ✅ CHECKPOINT 2 SUCCESS
**If 4-5 above:** 🟡 CHECKPOINT 2 CAUTION (monitor Gap 5.7 critical path)
**If <4 above:** 🔴 CHECKPOINT 2 FAILED (escalate blockers immediately)

---

## COORDINATOR INSTRUCTIONS

**Every 5 min until T+55:**
- [ ] Check TaskList for any new status updates
- [ ] Watch for blocker messages from any team
- [ ] Verify no git conflicts

**At T+50 (5 min before Checkpoint 3):**
- [ ] Validate Wave 2 Phase 2+ in progress
- [ ] Check Wave 3 Phase 1 completion (Gap 5.6 fixtures)
- [ ] Assess GPU shaders (Gap 5.7) timeline risk

**At T+55 (Checkpoint 3 trigger):**
- [ ] Receive status reports from all teams
- [ ] Validate success criteria above
- [ ] If all green: Broadcast "CHECKPOINT 3 ACKNOWLEDGED - Continue to Phase X+1"
- [ ] If issues: Escalate blockers with context
- [ ] Prepare Wave 4 validation setup (start reading PHASE_5_WAVE_4_VALIDATION.md)

---

**Status:** Ready to monitor
**Checkpoint 2 Window:** T+40 to T+55 (15 minutes)
**Next Report:** Checkpoint 3 Status Report at T+55

