fix(transcription): [2f388f42] finalize and fix AI insights feature

This commit resolves all outstanding issues with the AI Insights feature.

- Corrects the transcript formatting logic in  to properly handle the database JSON structure, ensuring the AI receives the correct context.
- Fixes the Gemini API client by using the correct model name ('gemini-2.0-flash') and the proper client initialization.
- Updates  to securely pass the API key as an environment variable to the container.
- Cleans up the codebase by removing temporary debugging endpoints.
- Adds  script for programmatic updates.
- Updates documentation with troubleshooting insights from the implementation process.

check_schema.py

@@ -0,0 +1,28 @@
+import sqlite3
+
+db_path = "/app/company-explorer/companies_v3_fixed_2.db"
+conn = sqlite3.connect(db_path)
+cursor = conn.cursor()
+
+for table in ['signals', 'enrichment_data']:
+    print(f"\nSchema of {table}:")
+    cursor.execute(f"PRAGMA table_info({table})")
+    for col in cursor.fetchall():
+        print(col)
+        
+    print(f"\nContent of {table} for company_id=12 (guessing FK):")
+    # Try to find FK column
+    cursor.execute(f"PRAGMA table_info({table})")
+    cols = [c[1] for c in cursor.fetchall()]
+    fk_col = next((c for c in cols if 'company_id' in c or 'account_id' in c), None)
+    
+    if fk_col:
+        cursor.execute(f"SELECT * FROM {table} WHERE {fk_col}=12")
+        rows = cursor.fetchall()
+        for row in rows:
+            print(dict(zip(cols, row)))
+    else:
+        print(f"Could not guess FK column for {table}")
+
+conn.close()
+