docs: delete three docs that were actively misleading

KERNEL-MAP.md was a line-number index into genre-kernel.js in which every one of the thirteen entries was wrong — GENRES documented at 1663 and actually at 1327, toState at 7908 and actually at 8198.

• ROADMAP.md was a 2026-07-11 plan with 38 items already marked done, referencing four docs that were never written, and opening with a ground-truth block asserting 249 anchors while scolding other docs for…

• STARCRUISE-LIBS.md was an adoption plan for five libraries; two shipped and are recorded in vendor/*/VERSION.txt and NOTICE, and the other three never existed in this tree.

• Their citations are fixed rather than orphaned: ARCHITECTURE.md drops the KERNEL-MAP pointer, planet.js loses it from a code comment, TODO stops calling ROADMAP the place plans graduate to.

• STARCRUISE.md said "Status: SCAFFOLD (this commit)" and called five modules stubs rendering a placeholder scene. They are ~7,300 lines.

▶ Play it: Neon Fiscal Year → Benthic Patience → Silken Reentry — a constellation across three families — the path is the mix https://stellate.app/?genre=citypop&seed=3698&path=1530.6221,586.10667,1376.19565&xdur=0.056

bd94b1e https://github.com/aboard-io/stellate/commit/bd94b1ea7720a5c7bcc6edd132f6af9f8cd2083a