fix: update doctor test version expectations for v0.60.0

The "slightly outdated" test used 0.50.0 which is now 10 minor versions
behind 0.60.0, triggering the "very old" warning threshold.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: steveyegge

cmd/bd/doctor_test.go

@@ -555,7 +555,7 @@ func TestCheckMetadataVersionTracking(t *testing.T) {
 			name: "slightly outdated version",
 			setupVersion: func(beadsDir string) error {
 				// Use a version that's less than 10 minor versions behind current
-				return os.WriteFile(filepath.Join(beadsDir, ".local_version"), []byte("0.50.0\n"), 0644)
+				return os.WriteFile(filepath.Join(beadsDir, ".local_version"), []byte("0.55.0\n"), 0644)
 			},
 			expectedStatus: doctor.StatusOK,
 			expectWarning:  false,
@@ -564,7 +564,7 @@ func TestCheckMetadataVersionTracking(t *testing.T) {
 			name: "very old version",
 			setupVersion: func(beadsDir string) error {
 				// Use a version that's 10+ minor versions behind current (triggers warning)
-				return os.WriteFile(filepath.Join(beadsDir, ".local_version"), []byte("0.29.0\n"), 0644)
+				return os.WriteFile(filepath.Join(beadsDir, ".local_version"), []byte("0.49.0\n"), 0644)
 			},
 			expectedStatus: doctor.StatusWarning,
 			expectWarning:  true,