Migrates the runner to `connectrpc.com/connect/v2` by pinning actionslib v1.5.0, which carries https://gitea.com/gitea/actionslib/pulls/28. The wire behaviour towards Gitea is unchanged and works against Gitea servers on connect v1 and v2. The client keeps v1's unlimited response size, and the error codes and messages the runner checks stay the same.
Reviewed-on: https://gitea.com/gitea/runner/pulls/1325
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
Gitea needs the workflow model and the expression evaluator to parse workflows and to build the task payload this runner consumes, so today it depends on `gitea.com/gitea/runner` just for `act/model` and `act/exprparser`. Both packages now live in `gitea.dev/actionslib` (`pkg/model`, `pkg/exprparser`), the module both sides already share, and this repository consumes them from there.
### Changes
- `act/model` and `act/exprparser` are deleted, all imports point at `gitea.dev/actionslib/pkg/...`.
- New `act/ghcontext` package: the `GithubContext` helpers that need a git checkout on disk (`SetRef`, `SetSha`, `SetRepositoryAndOwner`) are runner only and would drag a git client plus the act context logger into the shared module, so they stay here as functions, with their tests. Only caller is `RunContext.getGithubContext`.
- `act/common.CartesianProduct` moved to the shared model package, `act/model` was its only user.
- `act/model/testdata/container-volumes` moved to `act/runner/testdata/container-volumes`, its only user is `runner_test.go`.
- `internal/pkg/client.UUIDHeader` / `TokenHeader` now alias `pkg/protocol`, so the header names cannot drift apart from Gitea.
### Notes
- No behaviour change intended: the moved files are unchanged apart from the import paths and the split described above.
- `go.mod` depends on the released `gitea.dev/actionslib v0.7.0`, which carries both https://gitea.com/gitea/actionslib/pulls/11 and the `model.UsesHash` port in https://gitea.com/gitea/actionslib/pulls/14 that `main` needs after https://gitea.com/gitea/runner/pulls/1150.
- Verified with `go build ./...`, `go vet ./...` and `go test ./act/... ./internal/...`; the docker based `act/runner` integration tests (`TestRunEvent`, `TestRunMatrixWithUserDefinedInclusions`) fail identically with and without this change in my environment.
Assisted-by: Codet:GPT-5.1-Codex
Reviewed-on: https://gitea.com/gitea/runner/pulls/1143
Reviewed-by: silverwind <2021+silverwind@noreply.gitea.com>
