* feat(#703): add --granularity override flag to /gsd:plan-phase
Add a `--granularity <coarse|standard|fine>` flag to /gsd:plan-phase that
overrides the configured planning granularity for a single invocation.
The override is a new highest-priority tier above the existing precedence
chain (granularities[phaseType] -> granularity -> planning.granularity ->
'standard') in resolveGranularityInternal; when the flag is absent, resolution
is byte-for-byte unchanged. cmdInitPlanPhase now resolves with phaseType
'planning' so granularities.planning participates, and emits the resolved
value in the init JSON, which the plan-phase workflow forwards to the planner
prompt. Invalid values are rejected at the CLI boundary via a shared
assertValidGranularityOverride helper.
Closes#703
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* chore(#703): set changeset pr to 750
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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