Persist OCR captions in gallery

core/database.py

@@ -276,6 +276,7 @@ class GalleryImage(TimestampMixin, Base):
     id         = Column(String, primary_key=True, index=True)
     filename   = Column(String, nullable=False, unique=True)
     prompt     = Column(Text, nullable=False, default="")
+    caption    = Column(Text, nullable=True, default="")
     model      = Column(String, nullable=True)
     size       = Column(String, nullable=True)
     quality    = Column(String, nullable=True)
@@ -1182,6 +1183,29 @@ def _migrate_add_multiuser_owner_columns():
     _migrate_add_owner_to_table("documents", "ix_documents_owner")
 
 
+def _migrate_add_gallery_caption_column():
+    """Add OCR/vision caption storage for gallery images."""
+    import sqlite3
+    db_path = DATABASE_URL.replace("sqlite:///", "")
+    if not os.path.exists(db_path):
+        return
+    conn = None
+    try:
+        conn = sqlite3.connect(db_path)
+        columns = [row[1] for row in conn.execute("PRAGMA table_info(gallery_images)").fetchall()]
+        if columns and "caption" not in columns:
+            conn.execute("ALTER TABLE gallery_images ADD COLUMN caption TEXT DEFAULT ''")
+            conn.commit()
+            logging.getLogger(__name__).info("Migrated: added caption column to gallery_images")
+    except Exception as e:
+        logging.getLogger(__name__).warning(f"Migration gallery caption column failed: {e}")
+    finally:
+        try:
+            conn.close()
+        except Exception:
+            pass
+
+
 def _migrate_add_api_token_scopes_column():
     """Add API token scopes for existing installs.
 
@@ -1812,6 +1836,7 @@ def init_db():
     _migrate_add_token_columns()
     _migrate_add_mode_column()
     _migrate_add_multiuser_owner_columns()
+    _migrate_add_gallery_caption_column()
     _migrate_add_api_token_scopes_column()
     _migrate_backfill_document_owner_from_session()
     _migrate_assign_legacy_owner()