drop the verifier-catalog submodule

Nothing in the app, the gates or CI ever imported it — it was reference data plus an MCP tool, already documented as optional and deliberately not checked out by the workflow.

• Removes the submodule, .gitmodules and .mcp.json, and rewrites the places that explained them: CLAUDE.md loses the catalog section, README/SETUP lose the submodule init line, CONTRIBUTING loses the…

• The generator-verifier-feedback-loop idea stays — it is the thing this repo demonstrates, and it no longer needs a footnote pointing somewhere else.

▶ Play it: Food Court Eternity → Smoke Arithmetic → Barometric Stampede — a constellation across three families — the path is the mix https://stellate.app/?genre=vaporwave&seed=1943&path=1679.4415,292.16891,1718.20526&xdur=0.046

72b60eb https://github.com/aboard-io/stellate/commit/72b60eb762fceaa987c3ec8593b5c8a8dc162297