feat(db): add GetBooksByTag query for tag detail page

Uses $2 = ANY(tags) to match against the tags text[] column with GIN
index support. sqlc generates a single string Column2 param (not []string).

internal/database/querier.go

@@ -129,6 +129,7 @@ type Querier interface {
 	GetAllSystemConfig(ctx context.Context) ([]SystemConfig, error)
 	GetAllSystemSettings(ctx context.Context) ([]GetAllSystemSettingsRow, error)
 	GetAnnotationsForBook(ctx context.Context, arg GetAnnotationsForBookParams) ([]GetAnnotationsForBookRow, error)
+	GetBooksByTag(ctx context.Context, arg GetBooksByTagParams) ([]MediaItems, error)
 	// Get collection
 	GetCollection(ctx context.Context, id pgtype.UUID) (Collections, error)
 	// Get collection items

internal/database/queries.sql.go

@@ -1937,6 +1937,98 @@ func (q *Queries) GetAnnotationsForBook(ctx context.Context, arg GetAnnotationsF
 	return items, nil
 }
 
+const GetBooksByTag = `-- name: GetBooksByTag :many
+SELECT id, library_id, title, author, isbn, description, file_path, file_size, mime_type, cover_image_path, series, series_number, tags, asin, date_published, publisher, contributors, language, edition, page_count, genre, copyright_year, goodreads_id, openlibrary_id, google_books_id, added_by_admin_id, created_at, updated_at, format_group, format_mimetype, is_reflowable, has_fixed_layout, total_characters, chapter_count, entitlement_id, revision_number, kobo_content_id, kobo_metadata, manga_type, reading_direction, series_count, volume, imprint, age_rating, web_url, story_arc, is_black_and_white, metadata_notes, community_rating, alternate_info, scan_information, summary, chapter_metadata, library_type_name, tags_search, contributors_search, file_sha256, opf_identifier, opf_uuid, hash_confidence FROM media_items
+WHERE library_id = $1 AND tags @> ARRAY[$2::text]
+ORDER BY title ASC
+`
+
+type GetBooksByTagParams struct {
+	LibraryID pgtype.UUID `db:"library_id" json:"library_id"`
+	Column2   string      `db:"column_2" json:"column_2"`
+}
+
+func (q *Queries) GetBooksByTag(ctx context.Context, arg GetBooksByTagParams) ([]MediaItems, error) {
+	rows, err := q.db.Query(ctx, GetBooksByTag, arg.LibraryID, arg.Column2)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []MediaItems{}
+	for rows.Next() {
+		var i MediaItems
+		if err := rows.Scan(
+			&i.ID,
+			&i.LibraryID,
+			&i.Title,
+			&i.Author,
+			&i.Isbn,
+			&i.Description,
+			&i.FilePath,
+			&i.FileSize,
+			&i.MimeType,
+			&i.CoverImagePath,
+			&i.Series,
+			&i.SeriesNumber,
+			&i.Tags,
+			&i.Asin,
+			&i.DatePublished,
+			&i.Publisher,
+			&i.Contributors,
+			&i.Language,
+			&i.Edition,
+			&i.PageCount,
+			&i.Genre,
+			&i.CopyrightYear,
+			&i.GoodreadsID,
+			&i.OpenlibraryID,
+			&i.GoogleBooksID,
+			&i.AddedByAdminID,
+			&i.CreatedAt,
+			&i.UpdatedAt,
+			&i.FormatGroup,
+			&i.FormatMimetype,
+			&i.IsReflowable,
+			&i.HasFixedLayout,
+			&i.TotalCharacters,
+			&i.ChapterCount,
+			&i.EntitlementID,
+			&i.RevisionNumber,
+			&i.KoboContentID,
+			&i.KoboMetadata,
+			&i.MangaType,
+			&i.ReadingDirection,
+			&i.SeriesCount,
+			&i.Volume,
+			&i.Imprint,
+			&i.AgeRating,
+			&i.WebUrl,
+			&i.StoryArc,
+			&i.IsBlackAndWhite,
+			&i.MetadataNotes,
+			&i.CommunityRating,
+			&i.AlternateInfo,
+			&i.ScanInformation,
+			&i.Summary,
+			&i.ChapterMetadata,
+			&i.LibraryTypeName,
+			&i.TagsSearch,
+			&i.ContributorsSearch,
+			&i.FileSha256,
+			&i.OpfIdentifier,
+			&i.OpfUuid,
+			&i.HashConfidence,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const GetCollection = `-- name: GetCollection :one
 SELECT id, user_id, name, description, color, icon, auto_assign_rules, view_settings, show_on_dashboard, query_type, priority, is_system_collection, created_at FROM collections WHERE id = $1
 `

internal/database/queries/queries.sql

@@ -2167,3 +2167,8 @@ SELECT
 FROM libraries l
 JOIN library_types lt ON l.library_type_id = lt.id
 WHERE l.id = $1;
+
+-- name: GetBooksByTag :many
+SELECT * FROM media_items
+WHERE library_id = $1 AND tags @> ARRAY[$2::text]
+ORDER BY title ASC;