chore: update actions/checkout to v6, improve AGENTS.md

.github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: CI
 
 on:
   push:
-    branches: ['master', 'develop']
+    branches: ["master", "develop"]
   pull_request:
 
 env:
@@ -21,12 +21,12 @@ jobs:
       contents: read
       pull-requests: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
           go-version: stable
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@v9
         with: { version: latest }
 
   test:
@@ -45,7 +45,7 @@ jobs:
           - 1.25.x
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Go ${{ matrix.go }}
         uses: actions/setup-go@v6
@@ -206,7 +206,7 @@ jobs:
 
       - name: Upload test artifacts
         if: failure()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: test-results-go-${{ matrix.go }}
           path: |
@@ -297,7 +297,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Go
         uses: actions/setup-go@v6
@@ -342,10 +342,10 @@ jobs:
       contents: read
     if: github.event_name == 'pull_request'
     steps:
-      - name: 'Checkout Repository'
-        uses: actions/checkout@v5
+      - name: "Checkout Repository"
+        uses: actions/checkout@v6
 
-      - name: 'Dependency Review'
+      - name: "Dependency Review"
         uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: moderate
@@ -364,7 +364,7 @@ jobs:
       startsWith(github.ref, 'refs/heads/feature/docker'))
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Login to Docker Hub
         uses: docker/login-action@v3