Add CLAUDE.md guidance and repository map

- Create claude-md-writing skill with best practices for CLAUDE.md files
- Create repos.md registry of all repos with status (Active/Planned/Splitting)
- Update /create-repo to include organization context section
- Update repo-conventions to reference new skill

Each repo's CLAUDE.md now links to manifesto, repos.md, and vision.md
so Claude always understands the bigger picture.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

commands/create-repo.md

@@ -7,6 +7,7 @@ argument-hint: <repo-name>
 
 @~/.claude/skills/repo-conventions/SKILL.md
 @~/.claude/skills/vision-management/SKILL.md
+@~/.claude/skills/claude-md-writing/SKILL.md
 @~/.claude/skills/gitea/SKILL.md
 
 Create a new repository with Flowmade's standard structure.
@@ -44,12 +45,19 @@ Create a new repository with Flowmade's standard structure.
    - Link to `../architecture/manifesto.md`
    - Fill in based on user's answers
 
-7. **Create CLAUDE.md**:
+7. **Create CLAUDE.md** (following claude-md-writing skill):
    ```markdown
    # <Repo Name>
 
    <One-line description from step 3>
 
+   ## Organization Context
+
+   This repo is part of Flowmade. See:
+   - [Organization manifesto](../architecture/manifesto.md) - who we are, what we believe
+   - [Repository map](../architecture/repos.md) - how this fits in the bigger picture
+   - [Vision](./vision.md) - what this specific product does
+
    ## Setup
 
    ```bash
@@ -67,6 +75,10 @@ Create a new repository with Flowmade's standard structure.
    make test     # Run tests
    make lint     # Run linters
    ```
+
+   ## Architecture
+
+   TODO: Document key patterns and conventions once established.
    ```
 
 8. **Create Makefile** (basic template):