feat: add CI/CD workflow and update documentation

- Add .gitea/workflows/docker-publish.yaml for automated builds
- Configure workflow to trigger on main branch
- Update README.md with deployment instructions
- Update START-HERE.md with session context

This enables automatic Docker image builds tagged as :latest and :<sha>
when pushing to main branch.

START-HERE.md

@@ -13,9 +13,10 @@
 ## Current Task
 
 **Build is successful** - Now need to:
-1. Create `.gitea/workflows/docker-publish.yaml` for THIS project
-2. Initialize git repo and push to trigger build
-3. Enable `:latest` tag for `ai-stack-deployer` image
+1. ✅ Create `.gitea/workflows/docker-publish.yaml` for THIS project
+2. ✅ Initialize git repo
+3. 🔧 Create repository on Gitea: https://git.app.flexinit.nl (repo: ai-stack-deployer)
+4. Push to trigger build and enable `:latest` tag
 
 ## Quick Reference
 
@@ -29,6 +30,15 @@
 
 ## DOCUMENTATION
 
+**Git Repository**:
+```bash
+# Remote URL pattern
+ssh://git@git.app.flexinit.nl:22222/oussamadouhou/{repo-name}.git
+
+# This project
+origin: ssh://git@git.app.flexinit.nl:22222/oussamadouhou/ai-stack-deployer.git
+```
+
 **Environment**:
 ```bash
 STACK_IMAGE=git.app.flexinit.nl/oussamadouhou/oh-my-opencode-free:latest