settings.md was reading and writing .planning/config.json directly while
gsd-tools config-get/config-set route to .planning/workstreams/<slug>/config.json
when GSD_WORKSTREAM is active, causing silent write-read drift (Closes#2282).
- config.cjs: add cmdConfigPath() — emits the planningDir-resolved config path as
plain text (always raw, no JSON wrapping) so shell substitution works correctly
- gsd-tools.cjs: wire config-path subcommand
- settings.md: resolve GSD_CONFIG_PATH via config-path in ensure_and_load_config;
replace hardcoded cat .planning/config.json and Write to .planning/config.json
with $GSD_CONFIG_PATH throughout
- phase.cjs: fix renameDecimalPhases to preserve zero-padded prefix (06.3 → 06.2
not 6.2) — pre-existing test failure on main
- tests/config.test.cjs: add config-path command tests (#2282)
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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