# Project State
## Project Reference
See: .planning/PROJECT.md (updated 2026-02-17)
**Core value:** AI assistants can safely read and modify structured configuration files without destroying formatting, comments, or file structure.
**Current focus:** M3 Logging & Validation -- Phase 9 Logging Infrastructure
## Current Position
Milestone: M3 Logging & Validation
Phase: 9 of 12 (Logging Infrastructure)
Plan: 1 of 2 in current phase
Status: Executing
Last activity: 2026-02-18 -- Completed 09-01-PLAN.md
Progress: [█████████████████████░░░░░░░░░] 70% (21/~30 plans est.)
## Performance Metrics
**Cumulative Velocity:**
- Total plans completed: 12 (v1.0) + 8 (v1.1) + 1 (M3) = 21
- Average duration: ~12min
- Total execution time: ~243min
**By Phase:**
| Phase | Plans | Total | Avg/Plan |
| ----- | ----- | ----- | -------- |
| 01 | 4 | 26min | 7min |
| 02 | 4 | 48min | 12min |
| 03 | 2 | 11min | 6min |
| 04 | 2 | 25min | 13min |
| 05 | 2 | 26min | 13min |
| 06 | 2 | 11min | 6min |
| 07 | 2 | 17min | 9min |
| 08 | 2 | 55min | 28min |
| 09 | 1 | 6min | 6min |
## Accumulated Context
### Decisions
Decisions are logged in PROJECT.md Key Decisions table.
Recent decisions affecting current work:
- M3: Two independent tracks (logging, validation) can be parallelized
- M3: Targeted InterceptHandler for `mcp_json_yaml_toml.*` namespace only (not root logger)
- M3: Type checker gate in Phase 9 before proceeding with migration
- 09-01: Used `import logging as _stdlib_logging` alias for module shadowing safety
- 09-01: File sink enqueue=True, stderr sink enqueue=False (thread safety vs immediacy)
- 09-01: diagnose=False on all sinks (production safety)
### Pending Todos
From .planning/todos/pending/ -- 7 pending todos.
Todos 1-3 overlap with completed v1.1 work. Todos 4-6 addressed by M3 requirements. Todo 7 (multi-doc YAML) deferred to future milestone.
### Blockers/Concerns
None.
### Quick Tasks Completed
| # | Description | Date | Commit | Directory |
| --- | ------------------------------------------------------- | ---------- | ------- | ------------------------------------------------------------------------------------------------- |
| 1 | Add data_type=meta support to data tool for server info | 2026-02-16 | f079d37 | [1-add-data-type-meta-support-to-data-tool-](./quick/1-add-data-type-meta-support-to-data-tool-/) |
## Session Continuity
Last session: 2026-02-18
Stopped at: Completed 09-01-PLAN.md
Resume file: .planning/phases/09-logging-infrastructure/09-01-SUMMARY.md
