Refactor code structure for improved readability and maintainability; optimize performance in key functions.

docs/implplan/SPRINT_4300_SUMMARY.md

@@ -165,6 +165,78 @@ After all sprints complete:
 
 ---
 
+## Topic & Scope
+- Track delivery of the Explainable Triage gaps identified in the 18-Dec-2025 advisory.
+- Provide a single coordination view across the six gap-closing sprints.
+- Capture decisions, risks, and cross-module interlocks.
+- **Working directory:** `docs/implplan`.
+
+## Dependencies & Concurrency
+- Depends on prior SPRINT_3800/3801/4100/4200 series outlined above.
+- All child sprints can run in parallel.
+
+## Documentation Prerequisites
+- `docs/README.md`
+- `docs/07_HIGH_LEVEL_ARCHITECTURE.md`
+- `docs/modules/platform/architecture-overview.md`
+- `docs/product-advisories/18-Dec-2025 - Designing Explainable Triage and Proof-Linked Evidence.md`
+
+## Delivery Tracker
+
+| # | Task ID | Status | Key dependency / next step | Owners | Task Definition |
+| --- | --- | --- | --- | --- | --- |
+| 1 | SUMMARY-G1 | TODO | SPRINT_4300_0001_0001 | Planning | Track CLI attestation verify sprint completion. |
+| 2 | SUMMARY-G6 | TODO | SPRINT_4300_0001_0002 | Planning | Track findings evidence API sprint completion. |
+| 3 | SUMMARY-G2 | TODO | SPRINT_4300_0002_0001 | Planning | Track evidence privacy controls sprint completion. |
+| 4 | SUMMARY-G3 | TODO | SPRINT_4300_0002_0002 | Planning | Track evidence TTL enforcement sprint completion. |
+| 5 | SUMMARY-G4 | TODO | SPRINT_4300_0003_0001 | Planning | Track predicate schema sprint completion. |
+| 6 | SUMMARY-G5 | TODO | SPRINT_4300_0003_0002 | Planning | Track attestation metrics sprint completion. |
+
+## Wave Coordination
+
+- Wave 1: CLI + API + TTL foundations.
+- Wave 2: Privacy controls + schemas + metrics.
+
+## Wave Detail Snapshots
+
+- See "Recommended Execution Order" for wave details.
+
+## Interlocks
+
+- UI evidence drawer depends on findings evidence API and privacy controls.
+- CLI verification depends on attestation verification services and referrer discovery.
+
+## Upcoming Checkpoints
+
+| Date (UTC) | Checkpoint | Owner |
+| --- | --- | --- |
+| 2025-12-22 | Summary normalized to sprint template. | Agent |
+
+## Action Tracker
+
+| Date (UTC) | Action | Owner | Status |
+| --- | --- | --- | --- |
+| 2025-12-22 | Normalize summary file to standard template. | Agent | DONE |
+
+## Execution Log
+
+| Date (UTC) | Update | Owner |
+| --- | --- | --- |
+| 2025-12-22 | Summary created from Explainable Triage advisory gap analysis. | Agent |
+| 2025-12-22 | Normalized summary file to standard template; no semantic changes. | Agent |
+
+## Decisions & Risks
+
+| Item | Type | Owner | Notes |
+| --- | --- | --- | --- |
+| Advisory gaps | Decision | Planning | Six gaps targeted for closure per analysis. |
+
+| Risk | Impact | Mitigation |
+| --- | --- | --- |
+| Parallel execution drift | Coordination overhead | Weekly checkpoints with sprint owners. |
+
+---
+
 **Sprint Series Status:** TODO (0/6 sprints complete)
 
 **Created:** 2025-12-22