* refactor(#1679): ADR-1239 Phase B — collapse program + command chains [AC2 slice 4]
Phase 2 AC2 slice 4. Collapses two more duplicated runtime->string chains in
bin/install.js's post-install next-step message:
- program (14 branches): an EXACT duplicate of runtimeLabel -> getRuntimeLabel.
- command (14 branches): the per-runtime /gsd-new-project invocation syntax
(gemini '/gsd:', codex '$', cursor skill-mention, kimi '/skill:', default
'/gsd-new-project') -> new getRuntimeNewProjectCommand(runtime) helper.
- src/runtime-name-policy.cts: RUNTIME_NEW_PROJECT_COMMANDS table +
getRuntimeNewProjectCommand(runtime) (sibling to runtimeFlags/getRuntimeLabel).
- bin/install.js: import getRuntimeNewProjectCommand; replace the program +
command chains with single lookups.
- tests/runtime-label-policy.test.cjs: 2 new tests for
getRuntimeNewProjectCommand (4 overrides + default for the other 12).
runtime === count: 53 -> 25 (-28). Cumulative Phase 2 this session: 129 -> 25
(-104). golden-install-parity 16/16 (program/command are stdout-only so not
parity-covered, but program matches RUNTIME_LABELS exactly and command values
are preserved verbatim in the table). AC2 data-collapse now essentially
exhausted; remaining 25 branches are the ADR-1235 agent-loop tail + per-runtime
semantic behavior.
* chore(changeset): add Changed fragment for program+command collapse (#1679)
a47979bb92