* fix(#3203): stop npm-global installs validating bundled agents against themselves getAgentsDir's claude branch derived the agents directory from __dirname, which is correct for repo runs and runtime-config-dir installs (where <root>/../agents IS the user's agents dir) but on an npm-global install resolves to the package's own bundled agents/, so checkAgentsInstalled validated the package against itself and agents_installed could never be false. The new-project and new-milestone halt/warn gates were silently dead for npm-global users. Keep the install-relative path for the shapes where it is correct, but when it lies inside a node_modules tree — the provably self-validating case — resolve getGlobalConfigDir('claude')/agents like every other runtime, honouring CLAUDE_CONFIG_DIR. GSD_AGENTS_DIR stays priority 1. Repair the doc comment that asserted the __dirname form was correct for both install shapes. Regression test mirrors the published npm-global layout (package under node_modules with a complete bundled agents/) and pins the resolved directory plus the issue's negative control (one agent missing from the config dir → agents_installed:false). Verified red against pre-fix code, green post-fix; the repo-layout W010 health test stays green. * chore(#3203): set changeset fragment pr to 3229 * docs(#3203): describe the node_modules guard as lexical, in CONTEXT.md and at the call site The Agent Install Check Module glossary entry asserted that Claude resolves the agents directory `__dirname`-relative unconditionally. That is the premise this PR falsified: on an npm-global install the install-relative path resolves to the package's own bundled `agents/`, so the check validated the package against itself and `agents_installed` could never be false. The inline doc comment above `getAgentsDir` was repaired with the fix; this external predicate was left behind and has been false since. CONTRIBUTING.md's `Fixed`-fragment docs exemption names this case explicitly — "Edit the docs anyway if a fix corrects something the docs got wrong." Both surfaces now describe the guard as what it is: an exact, case-sensitive path-segment test that TARGETS those layouts rather than detecting them, so neither claims more certainty than the predicate has. The call-site comment carried the same conflation the glossary did. A path merely carrying a directory of that name resolves the same way — the edge already disclosed on this PR — and a non-empty GSD_AGENTS_DIR overrides it. Comment-only in `src/`; no behaviour change. `CONFIG.LOCATION.SEAM.two-families` needs no change: `GSD_AGENTS_DIR -> getAgentsDir priority 1` is still accurate. --------- Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
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