Add Gitea smoke runner workflow

README.md

@@ -63,6 +63,30 @@ The test suite contains:
 - Native integration tests that self-gate when `libnftables` is unavailable
 - Capability-dependent tests that only run when `CAP_NET_ADMIN` is available
 
+## Gitea Smoke CI
+
+The repository includes a Gitea Actions smoke workflow at `.gitea/workflows/smoke.yml`.
+
+- Trigger: push and pull request
+- Runner label: `debian-13`
+- Job model: non-root smoke verification
+- Workflow actions:
+  - bootstrap the .NET 10 SDK inside the job
+  - restore
+  - build
+  - run `dotnet test`
+
+Important runner prerequisites:
+
+- Debian 13 host with the `debian-13` label
+- `bash`
+- `curl`
+- `gcc`
+- `pkg-config`
+- system-installed `libnftables` development/runtime packages discoverable by `pkg-config`
+
+The job does not attempt package-manager installs or privilege escalation. It is intended to catch restore/build/test regressions, not to provide privileged nftables coverage.
+
 ## High-Level Example
 
 ```csharp