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/notes-list/handler.py

@@ -0,0 +1,22 @@
+# 2026-03-09
+# handler.py — возвращает все записи из таблицы notes.
+# GET/POST /fn/default/notes-list → JSON массив записей, сортировка по created_at DESC.
+import os
+import psycopg2
+import psycopg2.extras
+
+
+def handle(event):
+    dsn = os.environ['PG_DSN']
+    conn = psycopg2.connect(dsn)
+    try:
+        cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+        cur.execute(
+            "SELECT id, title, body, created_at::text FROM notes ORDER BY created_at DESC"
+        )
+        rows = cur.fetchall()
+        return [dict(r) for r in rows]
+    except Exception as e:
+        return {'error': str(e)}
+    finally:
+        conn.close()

examples/notes-python/code/notes-list/requirements.txt

@@ -0,0 +1 @@
+psycopg2-binary

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

@@ -0,0 +1,74 @@
+# 2026-03-09
+# handler.py — CRUD роутер для таблицы notes.
+# Роутинг по event._path (sub-path URL):
+#   POST /fn/default/notes/add?title=...&body=...    → INSERT
+#   POST /fn/default/notes/update?id=1&title=...     → UPDATE
+#   POST /fn/default/notes/delete?id=1               → DELETE
+# _path и _query добавляет runtime из HTTP запроса (server.py).
+import os
+import psycopg2
+import psycopg2.extras
+
+
+def handle(event):
+    dsn = os.environ['PG_DSN']
+    # sub-path без ведущего слэша: "add", "update", "delete"
+    action = event.get('_path', '/').strip('/')
+    q = event.get('_query', {})
+
+    conn = psycopg2.connect(dsn)
+    try:
+        cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
+
+        if action == 'add':
+            title = q.get('title') or event.get('title', '')
+            body = q.get('body') or event.get('body', '')
+            if not title:
+                return {'error': 'title is required'}
+            cur.execute(
+                "INSERT INTO notes (title, body) VALUES (%s, %s)"
+                " RETURNING id, title, body, created_at::text",
+                (title, body)
+            )
+            row = cur.fetchone()
+            conn.commit()
+            return dict(row)
+
+        elif action == 'update':
+            id_ = q.get('id') or event.get('id')
+            if not id_:
+                return {'error': 'id is required'}
+            title = q.get('title') or event.get('title', '')
+            body = q.get('body') or event.get('body', '')
+            cur.execute(
+                "UPDATE notes SET title=%s, body=%s WHERE id=%s"
+                " RETURNING id, title, body, created_at::text",
+                (title, body, int(id_))
+            )
+            row = cur.fetchone()
+            conn.commit()
+            return dict(row) if row else {'error': 'not found'}
+
+        elif action == 'delete':
+            id_ = q.get('id') or event.get('id')
+            if not id_:
+                return {'error': 'id is required'}
+            cur.execute(
+                "DELETE FROM notes WHERE id=%s RETURNING id",
+                (int(id_),)
+            )
+            row = cur.fetchone()
+            conn.commit()
+            return {'deleted': row['id']} if row else {'error': 'not found'}
+
+        else:
+            return {
+                'error': f'unknown action: /{action}',
+                'hint': 'use /add?title=...&body=..., /update?id=X&title=...&body=..., /delete?id=X'
+            }
+
+    except Exception as e:
+        conn.rollback()
+        return {'error': str(e)}
+    finally:
+        conn.close()

examples/notes-python/code/notes/requirements.txt

@@ -0,0 +1 @@
+psycopg2-binary

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()

examples/notes-python/code/sql-runner/requirements.txt

@@ -0,0 +1 @@
+psycopg2-binary