chore(web): scaffold operations/ and web/ packages + [web] extra (W0)

src/ci_orchestrator/operations/__init__.py

@@ -0,0 +1,6 @@
+"""Pure operations layer shared by the CLI and the web UI.
+
+No ``click``, no ``print``, no presentation I/O — every function here
+returns a dataclass and is safe to import from either a CLI command
+wrapper or a web route.
+"""

src/ci_orchestrator/web/__init__.py

@@ -0,0 +1,4 @@
+"""Web UI package: FastAPI app, auth, and routes for VM/host management.
+
+Depends on the optional ``[web]`` extra; the CLI core stays dep-light.
+"""