[2ff88f42] feat(GTM-Engine): Implement Dual Opener Strategy & Harden Analysis

Completed the GTM engine setup:\n\n- Implemented 'Dual Opener' generation (Primary/Secondary) in ClassificationService.\n- Migrated DB to support two opener fields.\n- Updated API and Frontend to handle and display both openers.\n- Fixed bug creating duplicate website_scrape entries.\n- Hardened metric extraction by improving the LLM prompt and adding content length checks.

migrate_opener_secondary.py

@@ -0,0 +1,29 @@
+import sqlite3
+import sys
+
+DB_PATH = "/app/companies_v3_fixed_2.db"
+
+def migrate():
+    try:
+        conn = sqlite3.connect(DB_PATH)
+        cursor = conn.cursor()
+        
+        print(f"Checking schema in {DB_PATH}...")
+        cursor.execute("PRAGMA table_info(companies)")
+        columns = [row[1] for row in cursor.fetchall()]
+        
+        if "ai_opener_secondary" in columns:
+            print("Column 'ai_opener_secondary' already exists. Skipping.")
+        else:
+            print("Adding column 'ai_opener_secondary' to 'companies' table...")
+            cursor.execute("ALTER TABLE companies ADD COLUMN ai_opener_secondary TEXT")
+            conn.commit()
+            print("✅ Migration successful.")
+            
+    except Exception as e:
+        print(f"❌ Migration failed: {e}")
+    finally:
+        if conn: conn.close()
+
+if __name__ == "__main__":
+    migrate()