feat: add prek support as pre-commit alternative (#1040)

prek (https://prek.j178.dev) is a faster Rust-based alternative to
pre-commit that uses the same .pre-commit-config.yaml config files.

Changes:
- Add prek detection pattern in hookManagerPatterns (before pre-commit
  to ensure correct detection since prek hooks may contain 'pre-commit')
- Handle prek in checkManagerBdIntegration using same config parser
- Update init_git_hooks.go to recognize prek-installed hooks
- Rename isPreCommit field to isPreCommitFramework for clarity
- Use regex pattern matching all pre-commit/prek signatures consistently
- Add test cases for prek run and prek hook-impl signatures

Co-authored-by: Ismar Iljazovic <ismar@gmail.com>

cmd/bd/doctor/fix/hooks.go

@@ -27,6 +27,8 @@ type hookManagerConfig struct {
 
 // hookManagerConfigs defines external hook managers in priority order.
 // See https://lefthook.dev/configuration/ for lefthook config options.
+// Note: prek (https://prek.j178.dev) uses the same config files as pre-commit
+// but is a faster Rust-based alternative. We detect both from the same config.
 var hookManagerConfigs = []hookManagerConfig{
 	{"lefthook", []string{
 		// YAML variants
@@ -38,6 +40,7 @@ var hookManagerConfigs = []hookManagerConfig{
 		"lefthook.json", ".lefthook.json", ".config/lefthook.json",
 	}},
 	{"husky", []string{".husky"}},
+	// pre-commit and prek share the same config files; we detect which is active from git hooks
 	{"pre-commit", []string{".pre-commit-config.yaml", ".pre-commit-config.yml"}},
 	{"overcommit", []string{".overcommit.yml"}},
 	{"yorkie", []string{".yorkie"}},
@@ -92,9 +95,12 @@ type hookManagerPattern struct {
 }
 
 // hookManagerPatterns identifies which hook manager installed a git hook (in priority order).
+// Note: prek must come before pre-commit since prek hooks may also contain "pre-commit" in paths.
 var hookManagerPatterns = []hookManagerPattern{
 	{"lefthook", regexp.MustCompile(`(?i)lefthook`)},
 	{"husky", regexp.MustCompile(`(?i)(\.husky|husky\.sh)`)},
+	// prek (https://prek.j178.dev) - faster Rust-based pre-commit alternative
+	{"prek", regexp.MustCompile(`(?i)(prek\s+run|prek\s+hook-impl)`)},
 	{"pre-commit", regexp.MustCompile(`(?i)(pre-commit\s+run|\.pre-commit-config|INSTALL_PYTHON|PRE_COMMIT)`)},
 	{"simple-git-hooks", regexp.MustCompile(`(?i)simple-git-hooks`)},
 }
@@ -470,8 +476,13 @@ func checkManagerBdIntegration(name, path string) *HookIntegrationStatus {
 		return CheckLefthookBdIntegration(path)
 	case "husky":
 		return CheckHuskyBdIntegration(path)
-	case "pre-commit":
-		return CheckPrecommitBdIntegration(path)
+	case "pre-commit", "prek":
+		// prek uses the same config format as pre-commit
+		status := CheckPrecommitBdIntegration(path)
+		if status != nil {
+			status.Manager = name // Use the actual detected manager name
+		}
+		return status
 	default:
 		return nil
 	}