Add docs and project files - force for Culurien

docs/4_LOG/December_2025/IMPLEMENTATION_STATUS.md

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+# Error Logging Implementation Status - December 2025
+
+**Date:** 2025-12-16
+**Original Plan:** Error logging system upgrade v0.1.23.5 → v0.2.0
+**Implementation Status:** ~60% Complete
+
+## What Was Planned
+
+5-phase implementation over 15-17 hours:
+- Phase 1: Event buffering foundation
+- Phase 2: Agent event buffering integration
+- Phase 3: Error integration (critical failures)
+- Phase 4: Event reporting system
+- Phase 5: UI integration (optional for v0.2.0)
+
+## What's Been Implemented
+
+✅ **Infrastructure (Phases 1-2):**
+- Event buffer package: `aggregator-agent/internal/event/buffer.go` (135 lines)
+- SystemEvent models in both agent and server
+- Database schema: migration 019_create_system_events_table.sql
+- Event buffering integration in migration paths
+
+✅ **P0 Critical Error Points (Partial Phase 3):**
+- Migration error reporting integrated
+- Some agent failure points instrumented
+
+❌ **Still Missing (Remaining Phase 3):**
+- Agent startup failure event logging
+- Registration failure event logging
+- Token renewal failure event logging
+- Complete scanner subsystem failure coverage
+
+❌ **Event Reporting (Phase 4):**
+- Agent check-in doesn't report buffered events
+- Server doesn't process events from check-in payload
+- No batch event reporting mechanism
+
+❌ **UI Integration (Phase 5):**
+- Not started (marked as optional for v0.2.0)
+
+## Key Files
+
+**Original Plan:** `docs/4_LOG/December_2025/2025-12-16_Error-Logging-Implementation-Plan.md`
+**Agent Buffer:** `aggregator-agent/internal/event/buffer.go`
+**Models:** `aggregator-agent/internal/models/system_event.go`
+**Migration:** `aggregator-server/internal/database/migrations/019_create_system_events_table.up.sql`
+
+## Technical Debt
+
+- Event buffer exists but not integrated into all failure paths
+- Server lacks event processing in agent check-in handler
+- Missing unit tests for event buffering under failure conditions
+- No performance benchmarks for high-volume event scenarios
+
+## Next Steps
+
+For v0.2.0 release:
+1. Integrate event logging into agent startup/registration paths
+2. Add server-side event processing in agent check-in
+3. Test event buffering under network failures
+4. Document event schema for future extensions
+
+Post-v0.2.0:
+- Implement UI event dashboard (Phase 5)
+- Add event retention policies
+- Create event analytics system