fix: add explicit permissions blocks to workflows (CodeQL)

Co-authored-by: qinfendebingshuo <207279273+qinfendebingshuo@users.noreply.github.com>

.github/workflows/sandbox-deploy.yml

@@ -8,6 +8,9 @@ on:
     branches:
       - 'dev/DEV-*/**'
 
+permissions:
+  contents: write
+
 jobs:
   # ===== Job 1: 解析 + 校验 =====
   parse-and-validate:

.github/workflows/sync-deploy-to-notion.yml

@@ -8,6 +8,9 @@ on:
     - cron: '0 4,14 * * *'
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   sync:
     runs-on: ubuntu-latest