feat: Add MCP server stubs, development docs, and Docker updates

- Add MCP server skeleton implementations for all 7 planned servers
  (llm-gateway, knowledge-base, git, issues, filesystem, code-analysis, cicd)
- Add comprehensive DEVELOPMENT.md with setup and usage instructions
- Add BACKLOG.md with detailed phase planning
- Update docker-compose.dev.yml with Redis and Celery workers
- Update CLAUDE.md with Syndarix-specific context

Addresses issues #16, #20, #21

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

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

mcp-servers/git/server.py

@@ -0,0 +1,66 @@
+"""
+Syndarix Git MCP Server.
+
+Provides Git operations with:
+- Repository management (clone, pull, push)
+- Branch management
+- Commit operations
+- PR creation via Gitea/GitHub/GitLab APIs
+
+Per ADR-009: Git Integration.
+"""
+
+import os
+
+from fastmcp import FastMCP
+
+mcp = FastMCP(
+    "syndarix-git",
+    description="Git operations and PR management",
+)
+
+
+@mcp.tool()
+async def clone_repo(project_id: str, repo_url: str, branch: str = "main") -> dict:
+    """Clone a repository for a project."""
+    return {"status": "not_implemented", "project_id": project_id}
+
+
+@mcp.tool()
+async def create_branch(project_id: str, branch_name: str, from_ref: str = "main") -> dict:
+    """Create a new branch."""
+    return {"status": "not_implemented", "project_id": project_id}
+
+
+@mcp.tool()
+async def commit(project_id: str, message: str, files: list[str] | None = None) -> dict:
+    """Commit changes to the repository."""
+    return {"status": "not_implemented", "project_id": project_id}
+
+
+@mcp.tool()
+async def push(project_id: str, branch: str, force: bool = False) -> dict:
+    """Push changes to remote."""
+    return {"status": "not_implemented", "project_id": project_id}
+
+
+@mcp.tool()
+async def create_pr(
+    project_id: str,
+    title: str,
+    body: str,
+    head: str,
+    base: str = "main",
+) -> dict:
+    """Create a pull request."""
+    return {"status": "not_implemented", "project_id": project_id}
+
+
+@mcp.tool()
+async def get_diff(project_id: str, ref1: str = "HEAD", ref2: str | None = None) -> dict:
+    """Get diff between refs."""
+    return {"status": "not_implemented", "project_id": project_id}
+
+
+if __name__ == "__main__":
+    mcp.run()