* fix(#1865): runtime launcher honors CLAUDE_CONFIG_DIR
The gsd_run preamble resolved the Claude global install only at
$HOME/.claude/gsd-core/bin/, but the installer honors CLAUDE_CONFIG_DIR —
so a global install redirected via CLAUDE_CONFIG_DIR was invisible to every
gsd_run call (every command failed with 'gsd-tools.cjs not found').
The Claude resolver arm now uses ${CLAUDE_CONFIG_DIR:-$HOME/.claude},
matching the installer + the other runtimes' ${VAR:-default} pattern.
Default $HOME/.claude behavior is unchanged.
- _runtime-launcher.snippet.sh: Claude arm honors CLAUDE_CONFIG_DIR.
- sync-runtime-launcher.cjs re-run: 95 workflows/agents re-synced.
- review.md / discuss-phase.md: trimmed to stay under their byte budgets.
- runtime-launcher-parity.test.cjs: (A) substring updated for the new form
+ explicit #1865 assertion that the snippet honors CLAUDE_CONFIG_DIR.
- goldens + size baselines recaptured.
Closes#1865
* docs(#1865): backfill changeset pr 2024
