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Nicolas 0b9f251b6a fix: deliver cancel ack and reap leftover Windows job processes (#996)
## Summary

- When Gitea cancels a job, the reporter cancels its own task context; the final Close() flush then aborted on that same cancelled context and Gitea never received the runner's acknowledgement (missing tail logs and final state).
- On Windows the cancelled context also neutralised terminateRunningProcesses, leaving step grandchildren alive in the workspace, holding file handles, so the runner could no longer clean up and pick up new work.
- Reporter.Close() now flushes on a detached, bounded context via a new rpcCtx() helper and configurable Runner.ReportCloseTimeout (default 10s).
- terminateRunningProcesses now PowerShell-enumerates Win32_Process and taskkill /T /F's every process whose ExecutablePath or CommandLine references the job's workspace directories, on a detached context.
- The daemon heartbeat loop still exits on <-r.ctx.Done(): the runner is intentionally seen as offline by Gitea during cleanup so it isn't handed a new task overlapping the in-progress teardown.

## Test plan

- [x] go test ./internal/pkg/report/... ./act/container/ -run 'TestReporter_ServerCancelStillFlushesFinal|TestBuildWindowsWorkspaceKillScript'
- [x] make fmt && make lint-go - 0 issues
- [x] GOOS=windows go build ./... - clean
- [x] Manual on a Windows runner: trigger a long-running workflow, cancel from Gitea UI; verify (a) the job ends with tail logs + cancelled state in Gitea, (b) workspace cleans up, (c) the runner picks up a new job without restart.

Authored-by: bircni
🤖 Generated with [Claude Code](https://claude.com/claude-code)

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Co-authored-by: silverwind <me@silverwind.io>
Reviewed-on: https://gitea.com/gitea/runner/pulls/996
Reviewed-by: silverwind <2021+silverwind@noreply.gitea.com>
2026-05-24 10:01:01 +00:00
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