refactor: inline cache clearing into restore action

Consolidates cache clearing and restore into a single self-contained
action, eliminating the need for a separate clear-cache action.

Changes:
- Inline cache clearing logic directly into xahau-ga-cache-restore
- Delete xahau-ga-clear-cache action (no longer needed)
- Add additional-clear-keys input for clearing multiple keys
- Remove nd-experiment-overlayfs branch from workflow triggers

Benefits:
- Single action does everything (clear + restore)
- Simpler architecture (one action instead of two)
- Self-contained and easier to maintain

.github/actions/xahau-ga-cache-restore/action.yml

@@ -24,6 +24,10 @@ inputs:
     description: 'Check if a cache entry exists for the given input(s) without downloading it'
     required: false
     default: 'false'
+  additional-clear-keys:
+    description: 'Additional cache keys to clear (newline separated)'
+    required: false
+    default: ''
 
 outputs:
   cache-hit:
@@ -40,10 +44,96 @@ runs:
   using: 'composite'
   steps:
     - name: Clear cache if requested via commit message
-      uses: ./.github/actions/xahau-ga-clear-cache
-      with:
-        cache-key: ${{ inputs.key }}
-        cache-type: ${{ inputs.cache-type }}
+      shell: bash
+      env:
+        GH_TOKEN: ${{ github.token }}
+      run: |
+        echo "=========================================="
+        echo "${{ inputs.cache-type }} cache clear tag detection"
+        echo "=========================================="
+        echo "Searching for: [ci-ga-clear-cache] or [ci-ga-clear-cache:*]"
+        echo ""
+
+        CACHE_KEY="${{ inputs.key }}"
+
+        # Extract search terms if present (e.g., "ccache" from "[ci-ga-clear-cache:ccache]")
+        SEARCH_TERMS=$(echo "${XAHAU_GA_COMMIT_MSG}" | grep -o '\[ci-ga-clear-cache:[^]]*\]' | sed 's/\[ci-ga-clear-cache://;s/\]//' || echo "")
+
+        SHOULD_CLEAR=false
+
+        if [ -n "${SEARCH_TERMS}" ]; then
+          # Search terms provided - check if THIS cache key matches ALL terms (AND logic)
+          echo "🔍 [ci-ga-clear-cache:${SEARCH_TERMS}] detected"
+          echo "Checking if cache key matches search terms..."
+          echo "  Cache key: ${CACHE_KEY}"
+          echo "  Search terms: ${SEARCH_TERMS}"
+          echo ""
+
+          MATCHES=true
+          for term in ${SEARCH_TERMS}; do
+            if ! echo "${CACHE_KEY}" | grep -q "${term}"; then
+              MATCHES=false
+              echo "  ✗ Key does not contain '${term}'"
+              break
+            else
+              echo "  ✓ Key contains '${term}'"
+            fi
+          done
+
+          if [ "${MATCHES}" = "true" ]; then
+            echo ""
+            echo "✅ Cache key matches all search terms - will clear cache"
+            SHOULD_CLEAR=true
+          else
+            echo ""
+            echo "⏭️  Cache key doesn't match search terms - skipping cache clear"
+          fi
+        elif echo "${XAHAU_GA_COMMIT_MSG}" | grep -q '\[ci-ga-clear-cache\]'; then
+          # No search terms - always clear this job's cache
+          echo "🗑️  [ci-ga-clear-cache] detected in commit message"
+          echo "Clearing ${{ inputs.cache-type }} cache for key: ${CACHE_KEY}"
+          SHOULD_CLEAR=true
+        fi
+
+        if [ "${SHOULD_CLEAR}" = "true" ]; then
+          echo ""
+          echo "Deleting ${{ inputs.cache-type }} caches via GitHub API..."
+
+          # Delete primary cache key
+          echo "Checking for cache: ${CACHE_KEY}"
+          if gh cache list --key "${CACHE_KEY}" --json key --jq '.[].key' | grep -q "${CACHE_KEY}"; then
+            echo "  Deleting: ${CACHE_KEY}"
+            gh cache delete "${CACHE_KEY}" || true
+            echo "  ✓ Deleted"
+          else
+            echo "  ℹ️  Not found"
+          fi
+
+          # Delete additional keys if provided
+          if [ -n "${{ inputs.additional-clear-keys }}" ]; then
+            echo ""
+            echo "Checking additional keys..."
+            while IFS= read -r key; do
+              [ -z "${key}" ] && continue
+              echo "Checking for cache: ${key}"
+              if gh cache list --key "${key}" --json key --jq '.[].key' | grep -q "${key}"; then
+                echo "  Deleting: ${key}"
+                gh cache delete "${key}" || true
+                echo "  ✓ Deleted"
+              else
+                echo "  ℹ️  Not found"
+              fi
+            done <<< "${{ inputs.additional-clear-keys }}"
+          fi
+
+          echo ""
+          echo "✅ ${{ inputs.cache-type }} cache cleared successfully"
+          echo "Build will proceed from scratch"
+        else
+          echo ""
+          echo "ℹ️  No ${{ inputs.cache-type }} cache clear requested"
+        fi
+        echo "=========================================="
 
     - name: Restore cache
       id: restore-cache

.github/actions/xahau-ga-clear-cache/action.yml

@@ -1,110 +0,0 @@
-name: 'Clear Cache'
-description: 'Clears GitHub Actions cache based on commit message tags'
-
-inputs:
-  cache-key:
-    description: 'The cache key to check and potentially clear'
-    required: true
-  cache-type:
-    description: 'Type of cache (for logging purposes, e.g., "ccache", "Conan")'
-    required: false
-    default: 'cache'
-  additional-keys:
-    description: 'Additional cache keys to clear (newline separated)'
-    required: false
-    default: ''
-
-runs:
-  using: 'composite'
-  steps:
-    - name: Clear cache if requested via commit message
-      shell: bash
-      env:
-        GH_TOKEN: ${{ github.token }}
-      run: |
-        echo "=========================================="
-        echo "${{ inputs.cache-type }} cache clear tag detection"
-        echo "=========================================="
-        echo "Searching for: [ci-ga-clear-cache] or [ci-ga-clear-cache:*]"
-        echo ""
-
-        CACHE_KEY="${{ inputs.cache-key }}"
-
-        # Extract search terms if present (e.g., "ccache" from "[ci-ga-clear-cache:ccache]")
-        SEARCH_TERMS=$(echo "${XAHAU_GA_COMMIT_MSG}" | grep -o '\[ci-ga-clear-cache:[^]]*\]' | sed 's/\[ci-ga-clear-cache://;s/\]//' || echo "")
-
-        SHOULD_CLEAR=false
-
-        if [ -n "${SEARCH_TERMS}" ]; then
-          # Search terms provided - check if THIS cache key matches ALL terms (AND logic)
-          echo "🔍 [ci-ga-clear-cache:${SEARCH_TERMS}] detected"
-          echo "Checking if cache key matches search terms..."
-          echo "  Cache key: ${CACHE_KEY}"
-          echo "  Search terms: ${SEARCH_TERMS}"
-          echo ""
-
-          MATCHES=true
-          for term in ${SEARCH_TERMS}; do
-            if ! echo "${CACHE_KEY}" | grep -q "${term}"; then
-              MATCHES=false
-              echo "  ✗ Key does not contain '${term}'"
-              break
-            else
-              echo "  ✓ Key contains '${term}'"
-            fi
-          done
-
-          if [ "${MATCHES}" = "true" ]; then
-            echo ""
-            echo "✅ Cache key matches all search terms - will clear cache"
-            SHOULD_CLEAR=true
-          else
-            echo ""
-            echo "⏭️  Cache key doesn't match search terms - skipping cache clear"
-          fi
-        elif echo "${XAHAU_GA_COMMIT_MSG}" | grep -q '\[ci-ga-clear-cache\]'; then
-          # No search terms - always clear this job's cache
-          echo "🗑️  [ci-ga-clear-cache] detected in commit message"
-          echo "Clearing ${{ inputs.cache-type }} cache for key: ${CACHE_KEY}"
-          SHOULD_CLEAR=true
-        fi
-
-        if [ "${SHOULD_CLEAR}" = "true" ]; then
-          echo ""
-          echo "Deleting ${{ inputs.cache-type }} caches via GitHub API..."
-
-          # Delete primary cache key
-          echo "Checking for cache: ${CACHE_KEY}"
-          if gh cache list --key "${CACHE_KEY}" --json key --jq '.[].key' | grep -q "${CACHE_KEY}"; then
-            echo "  Deleting: ${CACHE_KEY}"
-            gh cache delete "${CACHE_KEY}" || true
-            echo "  ✓ Deleted"
-          else
-            echo "  ℹ️  Not found"
-          fi
-
-          # Delete additional keys if provided
-          if [ -n "${{ inputs.additional-keys }}" ]; then
-            echo ""
-            echo "Checking additional keys..."
-            while IFS= read -r key; do
-              [ -z "${key}" ] && continue
-              echo "Checking for cache: ${key}"
-              if gh cache list --key "${key}" --json key --jq '.[].key' | grep -q "${key}"; then
-                echo "  Deleting: ${key}"
-                gh cache delete "${key}" || true
-                echo "  ✓ Deleted"
-              else
-                echo "  ℹ️  Not found"
-              fi
-            done <<< "${{ inputs.additional-keys }}"
-          fi
-
-          echo ""
-          echo "✅ ${{ inputs.cache-type }} cache cleared successfully"
-          echo "Build will proceed from scratch"
-        else
-          echo ""
-          echo "ℹ️  No ${{ inputs.cache-type }} cache clear requested"
-        fi
-        echo "=========================================="

.github/workflows/xahau-ga-nix.yml

@@ -2,7 +2,7 @@ name: Nix - GA Runner
 
 on:
   push:
-    branches: ["dev", "candidate", "release", "nd-experiment-overlayfs-2025-10-29"]
+    branches: ["dev", "candidate", "release"]
   pull_request:
     branches: ["dev", "candidate", "release"]
   schedule: