feat: major enhancement — OS gallery, server rename, traffic chart, backups, VNC toggle, password reset, Redis caching, UX improvements

- Remove client IP removal capability (keep backend methods removed too)
- Add copy-to-clipboard buttons for IP addresses with tooltip feedback
- Replace OS dropdown with tile gallery (grouped, searchable, brand colors, EOL badges) in rebuild panel and checkout page
- Add inline server rename with friendly name generator and RFC 1123 validation
- Add traffic statistics canvas chart with responsive resize in resources panel
- Add backup listing timeline in manage panel with show-all expansion
- Add VNC enable/disable toggle with connection details and password copy
- Add server root password reset with auto-clipboard copy (never displayed)
- Add skeleton loading placeholders, action cooldowns (power 3s, rebuild 30s), progress indicator with elapsed timer
- Sanitize all client-facing error messages (no raw API errors exposed)
- Convert all state-mutating AJAX calls from GET to POST
- Add explicit break after all output() calls in client.php
- Add Redis-backed API response caching (Cache.php): OS templates 10min, traffic/backups 2min, currencies 30min, packages 10min
- Add GitHub Actions workflow for weekly VirtFusion API change detection
- Move cache busting step after semantic-release in publish workflow
- Add endpoint doc generator script and OpenAPI baseline placeholder
- Improve hostname generation entropy (bin2hex random_bytes)
- Add .superpowers/ to .gitignore

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/api-sync-check.yml

@@ -0,0 +1,65 @@
+name: VirtFusion API Change Detection
+
+on:
+  schedule:
+    - cron: '0 9 * * 1'  # Monday 9am UTC
+  workflow_dispatch:
+
+jobs:
+  check-api:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download current API spec
+        run: curl -sSL -o /tmp/openapi-current.yaml https://docs.virtfusion.com/api/openapi.yaml
+
+      - name: Compare with baseline
+        id: diff
+        run: |
+          if [ ! -f docs/openapi-baseline.yaml ]; then
+            echo "No baseline found — creating initial baseline"
+            cp /tmp/openapi-current.yaml docs/openapi-baseline.yaml
+            echo "changed=initial" >> "$GITHUB_OUTPUT"
+          elif ! diff -q docs/openapi-baseline.yaml /tmp/openapi-current.yaml > /dev/null 2>&1; then
+            echo "API spec has changed"
+            diff docs/openapi-baseline.yaml /tmp/openapi-current.yaml > /tmp/api-diff.txt || true
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "No changes detected"
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Create issue on change
+        if: steps.diff.outputs.changed == 'true'
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require('fs');
+            const diff = fs.readFileSync('/tmp/api-diff.txt', 'utf8').substring(0, 60000);
+            await github.rest.issues.create({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              title: `VirtFusion API spec changed (${new Date().toISOString().split('T')[0]})`,
+              body: `The VirtFusion OpenAPI spec has been updated.\n\n<details><summary>Diff</summary>\n\n\`\`\`diff\n${diff}\n\`\`\`\n</details>\n\nReview the changes and update the module if needed.`,
+              labels: ['api-sync']
+            });
+
+      - name: Update baseline and create PR
+        if: steps.diff.outputs.changed == 'true' || steps.diff.outputs.changed == 'initial'
+        run: |
+          cp /tmp/openapi-current.yaml docs/openapi-baseline.yaml
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          BRANCH="api-sync/$(date +%Y-%m-%d)"
+          git checkout -b "$BRANCH"
+          git add docs/openapi-baseline.yaml
+          git commit -m "chore: update VirtFusion API baseline spec"
+          git push origin "$BRANCH"
+          gh pr create --title "chore: update VirtFusion API baseline" --body "Automated update of the VirtFusion OpenAPI baseline spec." --base main
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}