Split /create-epics-stories into /create-epics + /create-stories; add /dev-story

- NEW /create-epics (agent: technical-director): architect-level epic scoping,
  one epic per architectural module. Does not create stories.
- NEW /create-stories (agent: lead-programmer): decomposes a single epic into
  story files with embedded TR-IDs, ADR guidance, and test evidence paths.
- NEW /dev-story: the missing implementation skill — reads a story, loads full
  context (TR registry, ADR, control manifest, engine prefs), routes to the
  correct programmer agent via Task, and drives implementation to completion
  including writing the test.
- DEPRECATED /create-epics-stories: added redirect notice; original content
  preserved for reference.
- Updated /gate-check: Pre-Prod→Production artifact check and follow-up actions
  now reference the two new skills.
- Updated workflow-catalog.yaml: replaced create-epics-stories step with two
  separate steps; implement step now references /dev-story with command field.

Story loop is now explicit:
  /story-readiness → /dev-story → /code-review → /story-done

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/docs/workflow-catalog.yaml

@@ -160,14 +160,25 @@ phases:
           min_count: 1
         description: "Build throwaway prototypes in isolated worktree to validate core mechanic"
 
-      - id: create-epics-stories
-        name: "Epics and Stories"
-        command: /create-epics-stories
+      - id: create-epics
+        name: "Create Epics"
+        command: /create-epics
         required: true
+        repeatable: true
         artifact:
-          glob: "production/stories/*.md"
+          glob: "production/epics/*/EPIC.md"
           min_count: 1
-        description: "Break GDDs + ADRs + control manifest into implementable story files"
+        description: "Translate GDDs + ADRs into epics — one per architectural module. Run per layer: /create-epics layer: foundation, then /create-epics layer: core"
+
+      - id: create-stories
+        name: "Create Stories"
+        command: /create-stories
+        required: true
+        repeatable: true
+        artifact:
+          glob: "production/epics/**/*.md"
+          min_count: 2
+        description: "Break each epic into implementable story files. Run per epic: /create-stories [epic-slug]"
 
       - id: sprint-plan
         name: "First Sprint Plan"
@@ -208,11 +219,12 @@ phases:
 
       - id: implement
         name: "Implement Stories"
+        command: /dev-story
         required: true
         repeatable: true
         artifact:
-          note: "Check src/ for active code and production/stories/ for In Progress stories"
-        description: "Pick the next ready story and implement it. Then run /story-done."
+          note: "Check src/ for active code and production/epics/**/*.md for In Progress stories"
+        description: "Pick the next ready story and implement it with /dev-story [story-path]. Routes to the correct programmer agent. Then run /code-review and /story-done."
 
       - id: story-done
         name: "Story Done Review"