Software factory (review phase): per-user Gitea/GitHub/GitLab connections, spec chat, project creation, factory page

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

docker-compose.yml

@@ -30,6 +30,8 @@ services:
       - codecraft-data:/data
       # The projects the agents may work on.
       - ${WORKSPACE:-./workspace}:/workspace
+      # Separate area for the software factory (clones of the watched repositories).
+      - ${FACTORY_DIR:-./factory}:/factory
     # Reach self-hosted models (Ollama, vLLM, ...) on the host.
     extra_hosts:
       - "host.docker.internal:host-gateway"