resolveRuntime's runtimeVersion parameter and cache-fallback step were
dead code from production's perspective. The --runtime-version path is
handled entirely in run.ts (findCachedRelease + downloadRuntimeVersion +
findBundleRoot + validateBundle), and run.ts only ever called
resolveRuntime() with no argument. The parameter and step 3 only existed
because tests exercised them.
Two parallel "compute cache dir" implementations (runtime.ts:65 and
run.ts:157) were a drift hazard if the cache layout ever changes.
Changes:
- Drop the runtimeVersion parameter from resolveRuntime.
- Drop the cache step from runtime.ts entirely; remove the unused
CACHE_DIR + findBundleRoot imports.
- Narrow RuntimeSource from "env" | "npm" | "cache" to "env" | "npm",
and drop the now-unused tag field from ResolvedRuntime.
- Remove the three "cache fallback" tests from runtime.test.ts. The
--runtime-version cache lookup is still covered by run.test.ts via
findCachedRelease tests.
Tests: 134 → 131 (three deleted tests are obsolete, the production
behavior they were verifying is now covered by run.test.ts).
José Almeida
feb7c5a9bd