test: add pytest verification suite and gitea ci workflow

README.md

@@ -157,4 +157,25 @@ src/
   storage.py
   task_manager.py
   ui.py
+tests/
+  conftest.py
+  test_pricing.py
+  test_server_api.py
+  test_storage.py
+.gitea/
+  workflows/
+    ci.yml
 ```
+
+## Verification
+
+Run local verification:
+
+```powershell
+pytest -q
+```
+
+Gitea CI pipeline:
+
+- File: `.gitea/workflows/ci.yml`
+- Runs compile checks + pytest on push and PR.