fix: unify theme system - fix theme switching persistence

- Unified localStorage key to 'theme-preference' across all components
- Fixed header.tsx using wrong localStorage key ('theme' instead of 'theme-preference')
- Added localStorage hybrid persistence for instant theme changes
- Removed router.refresh() which was causing stale data revert
- Replaced Blue theme with Sepia
- Consolidated auth() calls to prevent race conditions
- Updated UserSettingsData types to include all themes

_bmad/bmm/workflows/bmad-quick-flow/quick-dev/workflow.md

@@ -40,7 +40,7 @@ Load config from `{project-root}/_bmad/bmm/config.yaml` and resolve:
 
 ### Related Workflows
 
-- `create_tech_spec_workflow` = `{project-root}/_bmad/bmm/workflows/bmad-quick-flow/create-tech-spec/workflow.yaml`
+- `quick_spec_workflow` = `{project-root}/_bmad/bmm/workflows/bmad-quick-flow/quick-spec/workflow.md`
 - `workflow_init` = `{project-root}/_bmad/bmm/workflows/workflow-status/init/workflow.yaml`
 - `party_mode_exec` = `{project-root}/_bmad/core/workflows/party-mode/workflow.md`
 - `advanced_elicitation` = `{project-root}/_bmad/core/workflows/advanced-elicitation/workflow.xml`