improve api-integration skill structure + add skill-review-and-optimize CI

- expand frontmatter description with capability statement
- extract OAuth client, rate limiter, and monitoring schema into references/
- add copy-paste-ready sync loop implementation
- tighten auth and caching sections to tables
- add .github/workflows/skill-review.yml for automated skill review + optimize on PRs
- add .github/workflows/skill-apply-optimize.yml for /apply-optimize command

Author: fernandezbaptiste

.github/workflows/skill-apply-optimize.yml

@@ -0,0 +1,19 @@
+name: Apply Skill Optimization
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  apply:
+    if: >-
+      github.event.issue.pull_request &&
+      contains(github.event.comment.body, '/apply-optimize')
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: tesslio/skill-review-and-optimize@d81583861aaf29d1da7f10e6539efef4e27b0dd5
+        with:
+          mode: 'apply'

.github/workflows/skill-review.yml

@@ -0,0 +1,17 @@
+name: Skill Review & Optimize
+on:
+  pull_request:
+    paths: ['**/SKILL.md']
+
+jobs:
+  review:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+      - uses: tesslio/skill-review-and-optimize@d81583861aaf29d1da7f10e6539efef4e27b0dd5
+        with:
+          optimize: 'true'
+          tessl-token: ${{ secrets.TESSL_API_TOKEN }}