docs(01-01): complete ClickHouse infrastructure and WriteBuffer plan

- Create 01-01-SUMMARY.md with execution results
- Update STATE.md with plan progress and decisions
- Update REQUIREMENTS.md marking INGST-04, INGST-05, INGST-06 complete
- Update ROADMAP.md with phase 01 progress

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.planning/STATE.md

@@ -1,3 +1,19 @@
+---
+gsd_state_version: 1.0
+milestone: v1.0
+milestone_name: milestone
+status: executing
+stopped_at: Completed 01-01-PLAN.md
+last_updated: "2026-03-11T10:50:59.918Z"
+last_activity: 2026-03-11 -- Completed 01-01 (ClickHouse infrastructure and WriteBuffer)
+progress:
+  total_phases: 4
+  completed_phases: 0
+  total_plans: 3
+  completed_plans: 1
+  percent: 33
+---
+
 # Project State
 
 ## Project Reference
@@ -10,11 +26,11 @@ See: .planning/PROJECT.md (updated 2026-03-11)
 ## Current Position
 
 Phase: 1 of 4 (Ingestion Pipeline + API Foundation)
-Plan: 0 of 2 in current phase
-Status: Ready to plan
-Last activity: 2026-03-11 -- Roadmap created
+Plan: 1 of 3 in current phase
+Status: Executing
+Last activity: 2026-03-11 -- Completed 01-01 (ClickHouse infrastructure and WriteBuffer)
 
-Progress: [..........] 0%
+Progress: [███░░░░░░░] 33%
 
 ## Performance Metrics
 
@@ -34,6 +50,7 @@ Progress: [..........] 0%
 - Trend: -
 
 *Updated after each plan completion*
+| Phase 01 P01 | 3min | 2 tasks | 13 files |
 
 ## Accumulated Context
 
@@ -46,6 +63,8 @@ Recent decisions affecting current work:
 - [Roadmap]: Full-text search starts with ClickHouse skip indexes (tokenbf_v1), OpenSearch deferred
 - [Roadmap]: Phases 2 and 3 can execute in parallel (both depend only on Phase 1)
 - [Roadmap]: Web UI deferred to v2
+- [Phase 01]: Used spring-boot-starter-jdbc for JdbcTemplate + HikariCP auto-config
+- [Phase 01]: Created MetricsSnapshot record in core module (cameleer3-common has no metrics model)
 
 ### Pending Todos
 
@@ -60,6 +79,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-11
-Stopped at: Roadmap created, ready for Phase 1 planning
+Last session: 2026-03-11T10:50:59.915Z
+Stopped at: Completed 01-01-PLAN.md
 Resume file: None