Work off the Werkbank's Auftragskorb (the work_items basket) — read the open tasks, reproduce each complaint, restate it back into the row, triage it along the stage doctrine, fix the RULE rather than one spot, measure the effect and close the item with the diagnosed stage. Use when asked to work off the Korb, handle work items, process filed optimization tasks, or start an optimization round.
Take a finished change from diff to an open, green, review-clean PR — run the matching verify skills and the local CI gates first, then commit, push and open the PR, watch the pipeline AND the Copilot review, fix sensible findings and resolve the review threads. Never merges unless the user explicitly asks in this session. Use when asked to open or create a PR, ship a change, or finish up a change.
Run and exercise the FastAPI backend — start uvicorn, sweep the read endpoints with curl, check the diagnostic/fit/crop payloads against the live DB, and probe the admin write gate. Use when asked to run, start, test, or verify the API, a router, an endpoint, or a backend change.
Test and smoke-run the pure-Python compute layer in core/ — run pytest, run ruff lint/format the way CI does, and call the extraction pipeline directly on a synthetic chart without DB or HTTP. Use when asked to run, test, lint, or verify core/, the pipeline, extraction, template, or fit code.
Run and visually verify the kurrentschrift app after frontend changes — start the dev servers, click through ONLY the flows the change touches (chrome-devtools MCP locally, or playwright-core against the pre-installed Chromium in the cloud), watch the console and network, check style fidelity and legibility at a desktop AND a mobile viewport, and record a performance trace when the change can move performance. Use when asked to run, start, screenshot, verify, test in the browser, or visually check the app or a frontend change.
Verify Alembic schema migrations locally against a throwaway PostgreSQL — full upgrade chain incl. seeds, model↔migration drift via alembic check, and a downgrade/upgrade roundtrip — without ever touching the shared Cloud SQL DB. Use when asked to verify, test, or check a migration, a schema change, or alembic revisions before pushing.
Conventions and checklist for writing or updating the internal design docs under docs/ — German language rules, where a new doc goes, keeping docs/index.md and the CLAUDE.md/copilot-instructions pair in sync, and what is settled (verworfen) and must not be re-litigated. Use when asked to write, add, update, or restructure documentation, concepts, or reference docs.
Autonomous keep/discard experiment loop on the glyph extraction/rendering pipeline — snapshot DB fixtures once, then hypothesize, edit core/, run the glyph bench, log results.tsv, keep on improvement or git-reset. Never writes to the DB. Use when asked to optimize glyph rendering, improve template quality, run the glyph bench, or start an experiment loop.