feat: add MCP server for semantic code search with FastMCP integration

.claude/skills/wf-composer/phases/05-persist.md

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+# Phase 5: Persist — Assemble + Save Template
+
+## Objective
+
+Assemble the final workflow template JSON from design session data, write to template library, output usage instructions.
+
+## Workflow
+
+### Step 5.1 — Load Design Session
+
+Read:
+- `design-session/intent.json` → template metadata
+- `design-session/dag.json` → nodes, edges, checkpoints, context_schema
+
+### Step 5.2 — Determine Template Name + Path
+
+**Name**: Use user's confirmed name from Phase 4. If not set, derive from intent.task_type + first 3 meaningful words of raw_description.
+
+**Slug**: kebab-case from name (e.g. "Feature TDD with Review" → "feature-tdd-with-review")
+
+**Path**: `.workflow/templates/<slug>.json`
+
+**template_id**: `wft-<slug>-<YYYYMMDD>`
+
+Check for existing file:
+- If exists and different content: append `-v2`, `-v3`, etc.
+- If exists and identical: skip write, output "Template already exists"
+
+### Step 5.3 — Assemble Template JSON
+
+See `specs/template-schema.md` for full schema. Assemble:
+
+```json
+{
+  "template_id": "wft-<slug>-<date>",
+  "name": "<human name>",
+  "description": "<raw_description truncated to 120 chars>",
+  "version": "1.0",
+  "created_at": "<ISO timestamp>",
+  "source_session": "<WFD-id>",
+  "tags": ["<task_type>", "<complexity>"],
+  "context_schema": { /* from dag.json */ },
+  "nodes": [ /* from dag.json, full node objects */ ],
+  "edges": [ /* from dag.json */ ],
+  "checkpoints": [ /* checkpoint node IDs */ ],
+  "atomic_groups": [ /* from intent.json parallel groups */ ],
+  "execution_mode": "serial",
+  "metadata": {
+    "node_count": <n>,
+    "checkpoint_count": <n>,
+    "estimated_duration": "<rough estimate based on node types>"
+  }
+}
+```
+
+### Step 5.4 — Write Template
+
+Write assembled JSON to `.workflow/templates/<slug>.json`.
+
+Ensure `.workflow/templates/` directory exists (create if not).
+
+### Step 5.5 — Update Template Index
+
+Read/create `.workflow/templates/index.json`:
+```json
+{
+  "templates": [
+    {
+      "template_id": "wft-<slug>-<date>",
+      "name": "<name>",
+      "path": ".workflow/templates/<slug>.json",
+      "tags": ["<task_type>"],
+      "created_at": "<ISO>",
+      "node_count": <n>
+    }
+  ]
+}
+```
+Append or update entry for this template. Write back.
+
+### Step 5.6 — Output Summary
+
+```
+Template saved: .workflow/templates/<slug>.json
+  ID:          wft-<slug>-<date>
+  Nodes:       <n> work nodes + <n> checkpoints
+  Variables:   <comma-separated required vars>
+
+To execute:
+  Skill(skill="wf-player", args="<slug> --context goal='<your goal>'")
+
+To edit later:
+  Skill(skill="wf-composer", args="--edit .workflow/templates/<slug>.json")
+
+To list all templates:
+  Skill(skill="wf-player", args="--list")
+```
+
+### Step 5.7 — Clean Up Draft
+
+Delete `design-session/` directory (or move to `.workflow/templates/design-drafts/archive/`).
+
+## Success Criteria
+
+- `.workflow/templates/<slug>.json` exists and is valid JSON
+- `index.json` updated with new entry
+- Console shows template path + usage command