refactor(utils): one PgTextString for the four pgtype.Text unwrappers

handlers textToString, router textToString, router getText, and utils
normText were four copies of the same NULL-to-empty unwrap (99 call
sites). One exported utils.PgTextString replaces them all; the private
normText (comparison normalizer) stays but is now the odd one out.

Harness fix found on the way: setupTestServer built a full wiring
literal for route registration and then RETURNED a second, sparser
literal that never copied AnnotationService — setup.AnnotationService
was always nil on the struct every test receives. Nobody noticed until
cross_library_move_test became the first caller (it previously used
the now-retired plain CreateMediaHighlight query); it now exercises
the real SaveHighlight path through the wired service.

internal/router/frontend.go

@@ -552,9 +552,9 @@ func registerFrontendRoutes(cfg *Config) {
 			colData[i] = templates.CollectionData{
 				ID:          uuid.UUID(col.ID.Bytes).String(),
 				Name:        col.Name,
-				Description: getText(col.Description),
-				Color:       getText(col.Color),
-				Icon:        getText(col.Icon),
+				Description: utils.PgTextString(col.Description),
+				Color:       utils.PgTextString(col.Color),
+				Icon:        utils.PgTextString(col.Icon),
 				IsSystem:    col.IsSystemCollection.Bool,
 				IsSmart:     isSmart,
 				BookCount:   bookCount,
@@ -598,9 +598,9 @@ func registerFrontendRoutes(cfg *Config) {
 		colData := templates.CollectionData{
 			ID:          uuid.UUID(collection.ID.Bytes).String(),
 			Name:        collection.Name,
-			Description: getText(collection.Description),
-			Color:       getText(collection.Color),
-			Icon:        getText(collection.Icon),
+			Description: utils.PgTextString(collection.Description),
+			Color:       utils.PgTextString(collection.Color),
+			Icon:        utils.PgTextString(collection.Icon),
 		}
 
 		// Ensure default color if empty
@@ -652,9 +652,9 @@ func registerFrontendRoutes(cfg *Config) {
 		colData := templates.CollectionData{
 			ID:          collectionID,
 			Name:        collection.Name,
-			Description: getText(collection.Description),
-			Color:       getText(collection.Color),
-			Icon:        getText(collection.Icon),
+			Description: utils.PgTextString(collection.Description),
+			Color:       utils.PgTextString(collection.Color),
+			Icon:        utils.PgTextString(collection.Icon),
 			IsSystem:    collection.IsSystemCollection.Bool,
 			IsSmart:     cfg.CollectionHandler.CollectionService().IsSmartCollection(collection.AutoAssignRules),
 		}
@@ -861,7 +861,7 @@ func registerFrontendRoutes(cfg *Config) {
 			libData[i] = templates.LibraryData{
 				ID:          libUUID.String(),
 				Name:        lib.Name,
-				Description: getText(lib.Description),
+				Description: utils.PgTextString(lib.Description),
 				TypeName:    lib.TypeName,
 			}
 		}
@@ -1056,7 +1056,7 @@ func registerFrontendRoutes(cfg *Config) {
 			item := templates.ArchivedItem{
 				ID:           itemUUID.String(),
 				Title:        row.Title,
-				Author:       getText(row.Author),
+				Author:       utils.PgTextString(row.Author),
 				LibraryName:  row.LibraryName,
 				FilePath:     row.FilePath,
 				MissingScans: row.MissingScanCount,
@@ -1064,7 +1064,7 @@ func registerFrontendRoutes(cfg *Config) {
 			if row.MatchID.Valid {
 				item.MatchID = uuid.UUID(row.MatchID.Bytes).String()
 				item.MatchTitle = row.MatchTitle
-				item.MatchLibraryName = getText(row.MatchLibraryName)
+				item.MatchLibraryName = utils.PgTextString(row.MatchLibraryName)
 			}
 			if row.ArchivedAt.Valid {
 				archived := row.ArchivedAt.Time
@@ -1111,7 +1111,7 @@ func registerFrontendRoutes(cfg *Config) {
 			libData[i] = templates.LibraryData{
 				ID:          libUUID.String(),
 				Name:        lib.Name,
-				Description: getText(lib.Description),
+				Description: utils.PgTextString(lib.Description),
 				TypeName:    lib.TypeName,
 				TypeValue:   lib.TypeName,
 				FolderCount: len(folders),
@@ -1292,9 +1292,9 @@ func registerFrontendRoutes(cfg *Config) {
 				Username:  u.Username,
 				Email:     u.Email,
 				Role:      u.Role,
-				Theme:     getText(u.Theme),
-				FirstName: getText(u.FirstName),
-				LastName:  getText(u.LastName),
+				Theme:     utils.PgTextString(u.Theme),
+				FirstName: utils.PgTextString(u.FirstName),
+				LastName:  utils.PgTextString(u.LastName),
 				CreatedAt: u.CreatedAt.Time,
 			}
 		}
@@ -1401,13 +1401,13 @@ func registerFrontendRoutes(cfg *Config) {
 			Username:  targetUser.Username,
 			Email:     targetUser.Email,
 			Role:      targetUser.Role,
-			Theme:     getText(targetUser.Theme),
-			FirstName: getText(targetUser.FirstName),
-			LastName:  getText(targetUser.LastName),
+			Theme:     utils.PgTextString(targetUser.Theme),
+			FirstName: utils.PgTextString(targetUser.FirstName),
+			LastName:  utils.PgTextString(targetUser.LastName),
 			CreatedAt: targetUser.CreatedAt.Time,
 			// Without this the timezone select rendered UTC selected for
 			// EVERY user — saves landed, the modal just never showed them.
-			Timezone: getText(targetUser.Timezone),
+			Timezone: utils.PgTextString(targetUser.Timezone),
 		}
 
 		// Render modal