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/maintenance.go

@@ -21,7 +21,8 @@ const DefaultCleanupAgeDays = 30
 // CheckStaleClosedIssues detects closed issues that could be cleaned up.
 // This consolidates the cleanup command into doctor checks.
 func CheckStaleClosedIssues(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
@@ -99,7 +100,8 @@ func CheckStaleClosedIssues(path string) DoctorCheck {
 
 // CheckExpiredTombstones detects tombstones that have exceeded their TTL.
 func CheckExpiredTombstones(path string) DoctorCheck {
-	beadsDir := filepath.Join(path, ".beads")
+	// Follow redirect to resolve actual beads directory (bd-tvus fix)
+	beadsDir := resolveBeadsDir(filepath.Join(path, ".beads"))
 	jsonlPath := filepath.Join(beadsDir, "issues.jsonl")
 
 	if _, err := os.Stat(jsonlPath); os.IsNotExist(err) {
@@ -241,7 +243,8 @@ func CheckStaleMolecules(path string) DoctorCheck {
 
 // CheckCompactionCandidates detects issues eligible for compaction.
 func CheckCompactionCandidates(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