feat: add category and scope to specs for enhanced filtering and organization

- Introduced SpecCategory and SpecScope types to categorize specs by workflow stage and scope (global/project).
- Updated Spec interface to include category and scope properties.
- Enhanced SpecCard component to display category and scope badges.
- Implemented category and scope filtering in SpecsSettingsPage.
- Updated localization files to support new category and scope labels.
- Modified spec loading commands to utilize category instead of keywords.
- Adjusted spec index builder to handle category and scope during spec parsing.
- Updated seed documents to include category information.

.codex/skills/analyze-with-file/SKILL.md

@@ -85,7 +85,7 @@ Step 1: Topic Understanding
 
 Step 2: Exploration (Inline, No Agents)
    ├─ Detect codebase → search relevant modules, patterns
-   │   ├─ Run `ccw spec load --keywords exploration` (if spec system available)
+   │   ├─ Run `ccw spec load --category exploration` (if spec system available)
    │   └─ Use Grep, Glob, Read, mcp__ace-tool__search_context
    ├─ Multi-perspective analysis (if selected, serial)
    │   ├─ Single: Comprehensive analysis
@@ -297,7 +297,7 @@ const hasCodebase = Bash(`
 
 if (hasCodebase !== 'none') {
   // 1. Read project metadata (if exists)
-  //    - Run `ccw spec load --keywords exploration` (load project specs)
+  //    - Run `ccw spec load --category exploration` (load project specs)
   //    - .workflow/specs/*.md (project conventions)
 
   // 2. Search codebase for relevant content