Tom Boucher
4810bfe4df
refactor(#1679): ADR-1239 Phase B — collapse getConfigDirFromHome chain into getGlobalConfigHomeFragment [AC2 slice 2/6] (#1801)
* refactor(#1679): ADR-1239 Phase B — collapse getConfigDirFromHome chain into getGlobalConfigHomeFragment
AC2 slice 2. Collapses the 14-branch runtime->global-config-home source-fragment
chain in bin/install.js getConfigDirFromHome (the hook path.join() codegen mapping)
into a single getGlobalConfigHomeFragment(runtime) lookup in runtime-name-policy.cts,
sibling to getDirName / getRuntimeLabel.
The antigravity branch stays dynamic in the caller (resolveAntigravityGlobalDir +
path.relative — env-overridable, multi-segment); the prior inner unreachable
`if (!isGlobal) return "'agents'"` (dead: !isGlobal returns at the fn top) is dropped.
Behavior: byte-identical. Fragments preserved verbatim in the table.
- claude/unknown/empty -> default '.claude' fragment
- 14 runtimes (copilot..kimi) -> table lookup
- antigravity -> dynamic (unchanged)
Verification:
- TDD: tests/global-config-home-fragment.test.cjs (golden map + 2 drift guards +
fallbacks). Red->green.
- 16-runtime golden install parity: byte-identical (hook codegen output unchanged)
- eslint + test-file-count + regression-names clean
- runtime === count in install.js: 115 -> 101 (-14)
* chore(changeset): add Changed fragment for getConfigDirFromHome collapse (#1679)