fix: doctor checks follow redirect for Gas Town support (bd-tvus)

Extended bd-tvus fix to all doctor check functions that access .beads/
directory. In Gas Town multi-clone setups, crew/polecat clones use
.beads/redirect files to point to the shared mayor/rig beads directory.

Doctor checks now use resolveBeadsDir() to follow these redirects:
- daemon.go: CheckDaemonStatus
- git.go: CheckSyncBranchConfig, FindOrphanedIssues, CheckOrphanedIssues
- installation.go: CheckMultipleDatabases, CheckPermissions
- integrity.go: CheckIDFormat, CheckDependencyCycles, CheckTombstones,
  CheckDeletionsManifest, CheckRepoFingerprint
- jsonl_integrity.go: CheckJSONLIntegrity
- legacy.go: CheckFreshClone
- maintenance.go: CheckStaleClosedIssues, CheckExpiredTombstones,
  CheckCompactionCandidates
- perf.go: RunPerformanceDiagnostics, CollectPlatformInfo
- validation.go: CheckMergeArtifacts, CheckOrphanedDependencies,
  CheckDuplicateIssues, CheckTestPollution, CheckChildParentDependencies,
  CheckGitConflicts
- version.go: CheckMetadataVersionTracking

Intentionally NOT changed (check local files):
- CheckInstallation: checks local .beads/ exists
- CheckUntrackedBeadsFiles: checks git tracking of local files

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/bd/doctor/integrity.go

@@ -20,7 +20,8 @@ import (
 
 // CheckIDFormat checks whether issues use hash-based or sequential IDs
 func CheckIDFormat(path string) DoctorCheck {
-	beadsDir := filepath.Join(path, ".beads")
+	// Follow redirect to resolve actual beads directory (bd-tvus fix)
+	beadsDir := resolveBeadsDir(filepath.Join(path, ".beads"))
 
 	// Check metadata.json first for custom database name
 	var dbPath string
@@ -108,7 +109,8 @@ func CheckIDFormat(path string) DoctorCheck {
 
 // CheckDependencyCycles checks for circular dependencies in the issue graph
 func CheckDependencyCycles(path string) DoctorCheck {
-	beadsDir := filepath.Join(path, ".beads")
+	// Follow redirect to resolve actual beads directory (bd-tvus fix)
+	beadsDir := resolveBeadsDir(filepath.Join(path, ".beads"))
 	dbPath := filepath.Join(beadsDir, beads.CanonicalDatabaseName)
 
 	// If no database, skip this check
@@ -204,7 +206,8 @@ func CheckDependencyCycles(path string) DoctorCheck {
 // CheckTombstones checks the health of tombstone records
 // Reports: total tombstones, expiring soon (within 7 days), already expired
 func CheckTombstones(path string) DoctorCheck {
-	beadsDir := filepath.Join(path, ".beads")
+	// Follow redirect to resolve actual beads directory (bd-tvus fix)
+	beadsDir := resolveBeadsDir(filepath.Join(path, ".beads"))
 	dbPath := filepath.Join(beadsDir, beads.CanonicalDatabaseName)
 
 	// Skip if database doesn't exist
@@ -302,7 +305,8 @@ func CheckTombstones(path string) DoctorCheck {
 
 // CheckDeletionsManifest checks the status of deletions.jsonl and suggests migration to tombstones
 func CheckDeletionsManifest(path string) DoctorCheck {
-	beadsDir := filepath.Join(path, ".beads")
+	// Follow redirect to resolve actual beads directory (bd-tvus fix)
+	beadsDir := resolveBeadsDir(filepath.Join(path, ".beads"))
 
 	// Skip if .beads doesn't exist
 	if _, err := os.Stat(beadsDir); os.IsNotExist(err) {
@@ -400,7 +404,8 @@ func CheckDeletionsManifest(path string) DoctorCheck {
 // This detects when a .beads directory was copied from another repo or when
 // the git remote URL changed. A mismatch can cause data loss during sync.
 func CheckRepoFingerprint(path string) DoctorCheck {
-	beadsDir := filepath.Join(path, ".beads")
+	// Follow redirect to resolve actual beads directory (bd-tvus fix)
+	beadsDir := resolveBeadsDir(filepath.Join(path, ".beads"))
 
 	// Get database path
 	var dbPath string