refactor: remove dead code and consolidate tests (#1335)

Removes dead code and redundant logic and consolidates tests, so there is less to read and maintain. No behavior change.

1. **act/runner**: inline single-use wrappers, compile regexes once instead of per call, embed the trampoline as a string, drop the unused legacy result of `parseActionCommand`
2. **act/container**: `sanitizeConfig` and `mergeContainerConfigs` stop returning the configs they already mutate in place, drop never-set option fields and the unused `user` parameter of `ExecWithCmdLine`
3. **act/common and cache server**: drop the unused `Trace`/`Tracef` loggers and the short SHA of `FindGitRevision`, `RegisterJob` releases through `RevokeJob`
4. **daemon, poller and reporter**: one shutdown wait for both poll modes, drop an unreachable fetch timeout branch, guard the reporter's last report time with its existing lock instead of an atomic
5. **build**: drop unused Makefile and release workflow variables, collapse the goreleaser ignore list to the same build targets
6. **tests**: fold near-duplicate tests into tables with shared setup

Throughout, hand-rolled logic gives way to `cmp.Or`, `strings.Cut`, `slices` and `min`/`max`.

Reviewed-on: https://gitea.com/gitea/runner/pulls/1335
Reviewed-by: bircni <[email protected]>
Co-authored-by: silverwind <[email protected]>

internal/pkg/process/leftover.go

@@ -8,22 +8,14 @@ import (
 	"strings"
 )
 
-// pathWithin is the OS-agnostic core of dirContainsPath: dir and target must
-// already be cleaned, and fold folds case.
-func pathWithin(dir, target string, fold bool) bool {
-	if dir == "" || target == "" || dir == "." || target == "." {
+func dirContainsPath(dir, target string) bool {
+	dir = strings.ToLower(filepath.Clean(dir))
+	target = strings.ToLower(filepath.Clean(target))
+	if dir == "." || target == "." {
 		return false
 	}
-	if fold {
-		dir = strings.ToLower(dir)
-		target = strings.ToLower(target)
-	}
 	if dir == target {
 		return true
 	}
-	sep := string(filepath.Separator)
-	if !strings.HasSuffix(dir, sep) {
-		dir += sep
-	}
-	return strings.HasPrefix(target, dir)
+	return strings.HasPrefix(target, strings.TrimSuffix(dir, string(filepath.Separator))+string(filepath.Separator))
 }