Generate ERD diagram from schema at build time rather then dynamically to reduce dependency on mermaid js library in the frontend

scripts/generate_schema.py

@@ -0,0 +1,80 @@
+import os
+import sys
+
+# Add the project root to sys.path so we can import 'features'
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+import subprocess
+import tempfile
+import psycopg2
+from psycopg2.extras import RealDictCursor
+from urllib.parse import urlparse
+from dotenv import load_dotenv
+
+# Import Schema logic
+from features.schema import Schema
+
+def main():
+    # Load environment variables from .env
+    load_dotenv()
+
+    database_url = os.environ.get('DATABASE_URL')
+    if not database_url:
+        print("Error: DATABASE_URL not set in environment.")
+        return
+
+    # Connect to the database
+    db_url = urlparse(database_url)
+    conn = psycopg2.connect(
+        database=db_url.path[1:],
+        user=db_url.username,
+        password=db_url.password,
+        host=db_url.hostname,
+        port=db_url.port
+    )
+
+    def execute_func(query, args=()):
+        cur = conn.cursor(cursor_factory=RealDictCursor)
+        cur.execute(query, args)
+        rv = None
+        if cur.description is not None:
+            rv = cur.fetchall()
+        cur.close()
+        return rv
+
+    # Initialize Schema logic
+    schema_logic = Schema(execute_func)
+
+    print("Fetching schema information...")
+    schema_info = schema_logic.get_schema_info()
+    
+    print("Generating Mermaid code...")
+    mermaid_code = schema_logic.generate_mermaid_er(schema_info)
+
+    print("Rendering SVG via mermaid-cli...")
+    try:
+        with tempfile.TemporaryDirectory() as tmpdir:
+            input_file = os.path.join(tmpdir, "input.mmd")
+            output_file = os.path.join(tmpdir, "schema.svg")
+            
+            # Destination path
+            target_file = os.path.abspath(os.path.join("static", "img", "schema.svg"))
+            os.makedirs(os.path.dirname(target_file), exist_ok=True)
+
+            with open(input_file, "w") as f:
+                f.write(mermaid_code)
+
+            # Run mmdc
+            subprocess.run(
+                ["bun", "x", "mmdc", "-i", input_file, "-o", target_file],
+                check=True
+            )
+            print(f"Successfully generated {target_file}")
+
+    except Exception as e:
+        print(f"Error during SVG generation: {e}")
+    finally:
+        conn.close()
+
+if __name__ == "__main__":
+    main()