P9-S37: importers and eval harness

[samrusani]

Summary

• add Markdown and ChatGPT importers to bring total shipped importer coverage to three
• generalize provenance and deterministic dedupe handling across importers
• add a reproducible Phase 9 evaluation harness plus committed baseline report evidence

Validation

• docker compose up -d
• ./scripts/migrate.sh
• ./scripts/load_sample_data.sh
• ./scripts/load_openclaw_sample_data.sh --user-id 00000000-0000-0000-0000-000000000038 --user-email openclaw-import-038@example.com --display-name "OpenClaw Import 038" --source fixtures/openclaw/workspace_v1.json
• ./scripts/load_markdown_sample_data.sh --user-id 00000000-0000-0000-0000-000000000038 --source fixtures/importers/markdown/workspace_v1.md
• ./scripts/load_chatgpt_sample_data.sh --user-id 00000000-0000-0000-0000-000000000038 --source fixtures/importers/chatgpt/workspace_v1.json
• APP_RELOAD=false ./scripts/api_dev.sh
• curl -sS http://127.0.0.1:8000/healthz
• ./.venv/bin/python -m alicebot_api --user-id 00000000-0000-0000-0000-000000000038 recall --thread-id eeeeeeee-eeee-4eee-8eee-eeeeeeeeeeee --project "Markdown Import Project" --query "markdown importer deterministic" --limit 5
• ./.venv/bin/python -m alicebot_api --user-id 00000000-0000-0000-0000-000000000038 resume --thread-id eeeeeeee-eeee-4eee-8eee-eeeeeeeeeeee --project "Markdown Import Project" --max-recent-changes 5 --max-open-loops 5
• ./scripts/run_phase9_eval.sh --user-id 00000000-0000-0000-0000-000000000039 --user-email phase9-eval-039@example.com --display-name "Phase9 Eval 039" --report-path eval/reports/phase9_eval_latest.json
• ./.venv/bin/python -m pytest tests/unit/test_importers.py tests/unit/test_phase9_eval.py -q
• ./.venv/bin/python -m pytest tests/integration/test_openclaw_import.py tests/integration/test_markdown_import.py tests/integration/test_chatgpt_import.py tests/integration/test_phase9_eval.py -q
• ./.venv/bin/python -m pytest tests/unit tests/integration
• pnpm --dir apps/web test