* feat(#1040): phase 5b — drive configHome from the runtime descriptor (runtime-homes switch → lookup)
getGlobalConfigDir now resolves configHome from registry.runtimes[id].runtime.configHome
via a single resolveConfigHomeFromDescriptor(configHome, {env, home, existsSync})
(dot-home / dot-home-nested / xdg / generic-agents-root), replacing the hardcoded
16-runtime switch. Equivalence-preserving: byte-identical config dirs for all 16
runtimes + grok + default + explicitDir (Codex-verified, no divergence).
Nuances preserved: xdg env[1] is a FILE path → path.dirname; existsSync injection
seam keeps antigravity/kimi probe tests hermetic; grok stays hardcoded
(GROK_AGENTS_HOME → ~/.agents, not in the 16); copilot two-env fallback; explicitDir
short-circuit. getGlobalSkillsBase unchanged (out of scope). Lazy require of the
committed capability-registry.cjs (no circular load).
Test env-clearing lists (install.test ENV_KEYS, bug-3126 envKeys) now derived from
the registry runtime configHome.env arrays — auto-correct, closes the missing
KIMI_CONFIG_DIR gap. New 81-case golden equivalence test.
Closes#1040
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* test(#1040): make windsurf golden path Windows-portable (path.join, not POSIX literal)
The dot-home-nested windsurf equivalence case hardcoded '/home/u/.codeium/windsurf'
but the resolver builds it via path.join(home,parent,name) → backslashes on Windows.
Use path.join for the expected value. Test-only; production resolver unchanged.
Defensive scan confirmed it was the only path.join-derived hardcoded literal.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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