ci(deps): bump actions/checkout from 4 to 6

.github/workflows/agent-dispatcher.yml

@@ -48,7 +48,7 @@ jobs:
 
     steps:
       - name: 📋 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 🤖 Run Dispatcher Core
         shell: pwsh

.github/workflows/aggregate-telemetry.yml

@@ -31,7 +31,7 @@ jobs:
       report_created: ${{ steps.report.outputs.created }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Calculate target week
         id: week

.github/workflows/build-tools.yml

@@ -51,7 +51,7 @@ jobs:
             ext: .exe
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
@@ -78,7 +78,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Download All Artifacts
         uses: actions/download-artifact@v4

.github/workflows/check-protocol-update.yml

@@ -12,7 +12,7 @@ jobs:
   check-update:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check for protocol updates
         id: check

.github/workflows/codex-review.yml

@@ -105,7 +105,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout PR
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: refs/pull/${{ needs.should-run.outputs.pr_number }}/merge
           fetch-depth: 0

.github/workflows/commit-atomicity.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/copilot-auto-implementation.yml

@@ -93,7 +93,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Create Implementation Issue for Copilot
         id: create-issue
@@ -239,7 +239,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check for E2E Test Configuration
         id: check-e2e

.github/workflows/copilot-meta-analysis.yml

@@ -182,7 +182,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Download Analysis Data
         uses: actions/download-artifact@v6

.github/workflows/dependency-quarantine.yml

@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
@@ -205,7 +205,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 🎓 Graduate mature PRs
         run: |
@@ -275,7 +275,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 🔄 Trigger Context Research
         run: |

.github/workflows/dependency-sentinel.yml

@@ -67,7 +67,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -195,7 +195,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # ─────────────────────────────────────────────────────────────
       # ACTION: New Dependabot PR - Ensure protocol is followed
@@ -416,7 +416,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 📊 Generate Weekly Report
         env:

.github/workflows/e2e-testing.yml

@@ -83,7 +83,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Detect E2E Framework
         id: detect
@@ -121,7 +121,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js
         uses: actions/setup-node@v4
@@ -213,7 +213,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.head_ref || github.ref }}
 

.github/workflows/evolution-cycle.yml

@@ -26,7 +26,7 @@ jobs:
     outputs:
       metrics_json: ${{ steps.metrics.outputs.json }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Calculate date range
         id: dates

.github/workflows/guardian-agent.yml

@@ -37,7 +37,7 @@ jobs:
 
     steps:
       - name: 📋 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 🔢 Resolve PR Number
         id: pr

.github/workflows/living-context.yml

@@ -72,7 +72,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -291,7 +291,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ env.CONTEXT_PR_BRANCH }}
 

.github/workflows/planner-agent.yml

@@ -47,7 +47,7 @@ jobs:
 
     steps:
       - name: 📋 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 🗺️ Parse Roadmap from ARCHITECTURE.md
         id: roadmap
@@ -105,7 +105,7 @@ jobs:
 
     steps:
       - name: 📋 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: 🧠 Generate Issue Plan
         id: generate

.github/workflows/post-quarantine-analysis.yml

@@ -52,7 +52,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: living-context/main
           fetch-depth: 0
@@ -113,7 +113,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Node.js (for Gemini CLI)
         uses: actions/setup-node@v4
@@ -250,7 +250,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Download Analysis Report
         uses: actions/download-artifact@v6

.github/workflows/structure-validator.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -86,7 +86,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/sync-issues.yml

@@ -47,7 +47,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 

.github/workflows/update-protocol.yml

@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: 📥 Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/workflow-validator.yml

@@ -68,7 +68,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@stable
@@ -113,7 +113,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Download Orchestrator (from artifact or pre-built)
         id: get-binary
@@ -227,7 +227,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Generate Markdown Report
         id: report