## Summary
Mirrors the GitHub Actions runner behaviour where each `run:` step shows a collapsible **"Run \<command\>"** section containing the script, shell command, and environment variables before the actual step output.
### What changes
- **`pkg/runner/step_run.go`**: In `stepRun.main()`, two new executors are added to the pipeline:
1. `logRunGroupHeader()` — runs after `setupShellCommandExecutor()` (so `sr.cmdline` is already resolved). Emits a `::group::Run <step>` log entry followed by the interpolated script, the full shell command line, and the step's env vars (sorted, internal vars filtered out).
2. The existing execution function now has `defer rawLogger.Infof("::endgroup::")` so the group is closed after the step finishes, regardless of success or failure.
### Env var filtering
Internal runner vars are hidden (`GITHUB_*`, `GITEA_*`, `RUNNER_*`, `INPUT_*`, `PATH`, `HOME`) — only user-relevant vars are shown, matching what GitHub Actions displays.
### Example output
```
▼ Run cargo build
cargo build
shell: bash --noprofile --norc -e -o pipefail {0}
env:
CARGO_HOME: /home/runner/.cargo
CARGO_INCREMENTAL: 0
CARGO_TERM_COLOR: always
<actual build output>
```
---------
Co-authored-by: silverwind <2021+silverwind@noreply.gitea.com>
Co-authored-by: silverwind <me@silverwind.io>
Reviewed-on: https://gitea.com/gitea/act_runner/pulls/847
Reviewed-by: silverwind <2021+silverwind@noreply.gitea.com>
Reviewed-by: ChristopherHX <38043+christopherhx@noreply.gitea.com>
Merges the `gitea.com/gitea/act` fork into this repository as the `act/`
directory and consumes it as a local package. The `replace github.com/nektos/act
=> gitea.com/gitea/act` directive is removed; act's dependencies are merged
into the root `go.mod`.
- Imports rewritten: `github.com/nektos/act/pkg/...` → `gitea.com/gitea/act_runner/act/...`
(flattened — `pkg/` boundary dropped to match the layout forgejo-runner adopted).
- Dropped act's CLI (`cmd/`, `main.go`) and all upstream project files; kept
the library tree + `LICENSE`.
- Added `// Copyright <year> The Gitea Authors ...` / `// Copyright <year> nektos`
headers to 104 `.go` files.
- Pre-existing act lint violations annotated inline with
`//nolint:<linter> // pre-existing issue from nektos/act`.
`.golangci.yml` is unchanged vs `main`.
- Makefile test target: `-race -short` (matches forgejo-runner).
- Pre-existing integration test failures fixed: race in parallel executor
(atomic counters); TestSetupEnv / command_test / expression_test /
run_context_test updated to match gitea fork runtime; TestJobExecutor and
TestActionCache gated on `testing.Short()`.
Full `gitea/act` commit history is reachable via the second parent.
Co-Authored-By: Claude (Opus 4.7) <noreply@anthropic.com>
