# Phase 03-02: Python Public API and Enhanced Status - Summary

## Completed Tasks

### Task 1: Python Public API Package
- Created `src/corpus_analyzer/api/__init__.py` - Package initializer
- Created `src/corpus_analyzer/api/public.py` with:
  - `SearchResult` dataclass (path, file_type, construct_type, summary, score, snippet)
  - `_find_config()` - Walks up from CWD to find corpus.toml
  - `_ENGINE_CACHE` - Caches engine with mtime invalidation
  - `_open_engine()` - Returns cached `(CorpusSearch, config)` tuple
  - `search()` - Calls `CorpusSearch.hybrid_search()` (API-03 compliance)
  - `index()` - Triggers `CorpusIndex.index_source()` for all sources (API-03 compliance)
- Created `src/corpus/__init__.py` - Re-export package for `from corpus import search, index`

### Task 2: Enhanced Status Command
- Added imports: `json`, `datetime` (UTC, datetime)
- Added helper functions:
  - `_human_age()` - Converts ISO timestamp to human-readable age
  - `_count_stale_files()` - Counts files modified after last index
- Updated `status_command()` signature with `--json` flag
- Enhanced status display:
  - Per-source staleness detection
  - Model reachability check (connected/unreachable)
  - Human-readable age ("2 hours ago")
  - JSON output format with `--json` flag
  - Rich table output with health indicators

## Verification Results

All checks passed:
- `uv run python -c "from corpus import search, index; print('OK')"` ✓
- `from corpus_analyzer.api.public import SearchResult` fields assertion ✓
- `uv run corpus status --help` shows `--json` flag ✓
- `uv run mypy src/corpus_analyzer/api/ src/corpus/` passes ✓
- `uv run ruff check src/corpus_analyzer/api/ src/corpus/` passes ✓

## Success Criteria Met

- `from corpus import search` resolves to `corpus_analyzer.api.public.search` ✓
- `search()` calls `CorpusSearch.hybrid_search()` - no divergent implementation ✓
- `SearchResult` dataclass has 6 fields: path, file_type, construct_type, summary, score, snippet ✓
- `index()` triggers `CorpusIndex.index_source()` for each configured source ✓
- `corpus status` shows per-source staleness, model reachability, human-readable age ✓
- `corpus status --json` emits structured JSON with health, files, chunks, model, sources, database keys ✓

## Commits

1. `c37de7c` - feat(api): implement Python public API with search and index functions
2. `f226652` - feat(cli): enhance status command with staleness detection and --json output

## Next Steps

Phase 03-02 is complete. Proceed to next phase as defined in the roadmap.
