feat(reference-curator): Add pipeline orchestrator and refactor skill format

Pipeline Orchestrator:
- Add 07-pipeline-orchestrator skill with code/CLAUDE.md and desktop/SKILL.md
- Add /reference-curator-pipeline slash command for full workflow automation
- Add pipeline_runs and pipeline_iteration_tracker tables to schema.sql
- Add v_pipeline_status and v_pipeline_iterations views
- Add pipeline_config.yaml configuration template
- Update AGENTS.md with Reference Curator Skills section
- Update claude-project files with pipeline documentation

Skill Format Refactoring:
- Extract YAML frontmatter from SKILL.md files to separate skill.yaml
- Add tools/ directories with MCP tool documentation
- Update SKILL-FORMAT-REQUIREMENTS.md with new structure
- Add migrate-skill-structure.py script for format conversion

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -73,7 +73,24 @@ This is a Claude Skills collection repository containing:
 |---|-------|---------|---------|
 | 90 | reference-curator | Modular skill suite for reference documentation | See sub-skills below |
 
-**Sub-skills (installed via `./install.sh`):**
+**Pipeline Orchestrator (Recommended):**
+
+| Command | Purpose |
+|---------|---------|
+| `/reference-curator-pipeline` | Full pipeline orchestration with QA loop handling |
+
+```
+# Full pipeline from topic
+/reference-curator-pipeline "Claude Code best practices" --max-sources 5
+
+# From URLs (skip discovery)
+/reference-curator-pipeline https://docs.anthropic.com/en/docs/prompt-caching
+
+# With auto-approve and fine-tuning output
+/reference-curator-pipeline "MCP servers" --auto-approve --export-format fine_tuning
+```
+
+**Individual Sub-skills (installed via `./install.sh`):**
 
 | Skill | Command | Purpose |
 |-------|---------|---------|
@@ -83,6 +100,7 @@ This is a Claude Skills collection repository containing:
 | content-distiller | `/content-distiller` | Summarization & key concept extraction |
 | quality-reviewer | `/quality-reviewer` | QA loop with approve/refactor/research routing |
 | markdown-exporter | `/markdown-exporter` | Export to markdown or JSONL for fine-tuning |
+| pipeline-orchestrator | `/reference-curator-pipeline` | Full 6-skill workflow orchestration |
 
 ## Dual-Platform Skill Structure
 
@@ -96,7 +114,11 @@ XX-skill-name/
 │   └── references/          # Documentation
 │
 ├── desktop/                 # Claude Desktop version
-│   ├── SKILL.md             # MCP-focused directive (YAML frontmatter)
+│   ├── skill.yaml           # Metadata (name, description, allowed-tools, license)
+│   ├── SKILL.md             # MCP-focused directive (content only, no frontmatter)
+│   ├── tools/               # MCP tool documentation & configs
+│   │   ├── {tool-name}.md       # Tool usage docs (e.g., firecrawl.md)
+│   │   └── {tool-name}.yaml     # Tool config (optional)
 │   ├── references/          # Guidance docs
 │   └── examples/            # Usage examples
 │
@@ -107,10 +129,28 @@ XX-skill-name/
 
 | Aspect | `code/` | `desktop/` |
 |--------|---------|------------|
-| Directive | CLAUDE.md | SKILL.md (YAML) |
+| Directive | CLAUDE.md | SKILL.md (content) |
+| Metadata | In CLAUDE.md | skill.yaml |
+| Tool docs | N/A | tools/ directory |
 | Execution | Direct Bash/Python | MCP tools only |
 | Scripts | Required | Reference only |
 
+### skill.yaml Schema
+
+```yaml
+# Required fields
+name: string              # Skill identifier
+description: string       # Trigger description (can be multi-line with |)
+
+# Optional fields
+allowed-tools:            # List of permitted MCP/Claude tools
+  - mcp__firecrawl__*
+  - Read
+  - Write
+license: string           # MIT, Internal-use Only, etc.
+triggers: []              # Explicit trigger keywords
+```
+
 ### Development Workflow
 
 1. **Build Claude Code version first** - Full automation with scripts
@@ -166,6 +206,7 @@ our-claude-skills/
 │   │   ├── 04-content-distiller/
 │   │   ├── 05-quality-reviewer/
 │   │   ├── 06-markdown-exporter/
+│   │   ├── 07-pipeline-orchestrator/  # Full pipeline coordination
 │   │   ├── shared/                 # Config templates & MySQL schema
 │   │   └── install.sh              # Cross-machine installer
 │   │