fix: Restore previous DB, migrate schema, mount Notion token

company-explorer/backend/scripts/migrate_v3_to_v4.py

@@ -0,0 +1,49 @@
+import sqlite3
+import os
+
+# DB Path relative to this script
+# script is in company-explorer/backend/scripts/
+# DB is in company-explorer/companies_v3_fixed_2.db
+DB_PATH = os.path.join(os.path.dirname(__file__), "../../companies_v3_fixed_2.db")
+
+def add_column(cursor, table, column, type_def):
+    try:
+        print(f"Adding column {column} to {table}...")
+        cursor.execute(f"ALTER TABLE {table} ADD COLUMN {column} {type_def}")
+        print("Done.")
+    except sqlite3.OperationalError as e:
+        if "duplicate column name" in str(e):
+            print(f"Column {column} already exists.")
+        else:
+            print(f"Error: {e}")
+
+def migrate():
+    if not os.path.exists(DB_PATH):
+        print(f"Database not found at {DB_PATH}")
+        return
+
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+
+    # Industries columns
+    add_column(cursor, "industries", "notion_id", "TEXT")
+    add_column(cursor, "industries", "industry_group", "TEXT")
+    add_column(cursor, "industries", "status_notion", "TEXT")
+    add_column(cursor, "industries", "whale_threshold", "REAL")
+    add_column(cursor, "industries", "min_requirement", "REAL")
+    add_column(cursor, "industries", "scraper_keywords", "TEXT")
+    add_column(cursor, "industries", "core_unit", "TEXT")
+    add_column(cursor, "industries", "proxy_factor", "TEXT")
+
+    # Robotics Categories columns
+    add_column(cursor, "robotics_categories", "notion_id", "TEXT")
+    
+    # Enrichment Data columns (just in case)
+    add_column(cursor, "enrichment_data", "wiki_verified_empty", "BOOLEAN DEFAULT 0")
+
+    conn.commit()
+    conn.close()
+    print("Migration completed.")
+
+if __name__ == "__main__":
+    migrate()