feat: add SpecDialog component for editing spec frontmatter

- Implement SpecDialog for managing spec details including title, read mode, priority, and keywords.
- Add validation and keyword management functionality.
- Integrate SpecDialog into SpecsSettingsPage for editing specs.

feat: create index file for specs components

- Export SpecCard, SpecDialog, and related types from a new index file for better organization.

feat: implement SpecsSettingsPage for managing specs and hooks

- Create main settings page with tabs for Project Specs, Personal Specs, Hooks, Injection, and Settings.
- Integrate SpecDialog and HookDialog for editing specs and hooks.
- Add search functionality and mock data for specs and hooks.

feat: add spec management API routes

- Implement API endpoints for listing specs, getting spec details, updating frontmatter, rebuilding indices, and initializing the spec system.
- Handle errors and responses appropriately for each endpoint.

.codex/skills/parallel-dev-cycle/phases/02-agent-execution.md

@@ -86,7 +86,7 @@ Cross-reference the task description against these documents for completeness.
 ### MANDATORY FIRST STEPS (Agent Execute)
 1. **Read role definition**: ~/.codex/agents/requirements-analyst.md
 2. Read: ${projectRoot}/.workflow/project-tech.json (if exists)
-3. Read: ${projectRoot}/.workflow/project-guidelines.json (if exists)
+3. Read: ${projectRoot}/.workflow/specs/*.md (if exists)
 4. Read: ${projectRoot}/.workflow/.cycle/${cycleId}.progress/coordination/feedback.md (if exists)
 
 ---
@@ -169,7 +169,7 @@ function spawnEPAgent(cycleId, state, progressDir) {
 ### MANDATORY FIRST STEPS (Agent Execute)
 1. **Read role definition**: ~/.codex/agents/exploration-planner.md
 2. Read: ${projectRoot}/.workflow/project-tech.json
-3. Read: ${projectRoot}/.workflow/project-guidelines.json
+3. Read: ${projectRoot}/.workflow/specs/*.md
 4. Read: ${progressDir}/ra/requirements.md
 
 ---