Root causes fixed:
1. PROJECT_TOOLS removed from Step 2 tool set — project assignment is now
exclusively handled by the runner in code, never by the LLM.
2. When Step 1 returns "new", runner calls execute_on_client insert/projects
directly (before Step 2), gets the created id, and passes it as context.
3. Newly created projects are appended to the local `projects` list so that
subsequent files in the same run can match to them via Step 1 — prevents
one project per file when multiple files share the same topic.
Also add tests/test_classify_file.py with pytest cases for _classify_file
and a CLI runner: python -m tests.test_classify_file <file> [project...]
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>