feat: notes-python CRUD example + runtime path/query forwarding

- invoke.go: forward sub-path and query string to function pods
- server.js v0.1.2: add _path, _query, _method to event
- server.py v0.1.1: add _path, _query, _method to event
- upload.go: bump runtime versions (nodejs20:v0.1.2, python3.11:v0.1.1)
- examples/notes-python: CRUD notes via sub-path routing
  - sql-runner: generic SQL executor for DDL jobs
  - notes: CRUD router (/add, /update, /delete)
  - notes-list: SELECT all notes
  - init.tf: create TABLE + INDEX on apply

examples/notes-python/code/sql-runner/handler.py

@@ -0,0 +1,26 @@
+# 2026-03-09
+# handler.py — универсальный исполнитель SQL запросов.
+# Принимает event.statements — массив SQL строк, выполняет последовательно.
+# Используется sless_job для DDL операций (CREATE TABLE, миграции и т.д.)
+import os
+import psycopg2
+
+
+def handle(event):
+    dsn = os.environ['PG_DSN']
+    statements = event.get('statements', [])
+    if not statements:
+        return {'error': 'no statements provided'}
+
+    conn = psycopg2.connect(dsn)
+    try:
+        cur = conn.cursor()
+        for sql in statements:
+            cur.execute(sql)
+        conn.commit()
+        return {'ok': True, 'executed': len(statements)}
+    except Exception as e:
+        conn.rollback()
+        return {'error': str(e)}
+    finally:
+        conn.close()