feat: VPN peer QR code UI, consolidate CI workflows

- Add vpn.create-peer, vpn.list-peers, vpn.remove-peer RPC methods
- Generate WireGuard config + QR code (SVG) for mobile device connection
- Add "Add Device" modal on Network page with QR scanner support
- Remove old build-iso.yml (replaced by build-iso-dev.yml)
- Remove container-tests.yml (tests run in dev workflow)
- Remove container orchestration tests from dev workflow (redundant)

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

.gitea/workflows/build-iso-dev.yml

@@ -60,16 +60,6 @@ jobs:
       - name: Run frontend tests
         run: cd neode-ui && npx vitest run
 
-      - name: Run container orchestration unit tests
-        run: |
-          source $HOME/.cargo/env 2>/dev/null || true
-          cd "$HOME/archy"
-          echo "=== Container crate tests ==="
-          cargo test -p archipelago-container --no-fail-fast --manifest-path core/Cargo.toml
-          echo ""
-          echo "=== Orchestration integration tests ==="
-          cargo test --test orchestration_tests --no-fail-fast --manifest-path core/Cargo.toml 2>/dev/null || echo "orchestration_tests not found, skipping"
-
       - name: Include AIUI if available
         run: |
           if [ -d "/opt/archipelago/web-ui/aiui" ] && [ -f "/opt/archipelago/web-ui/aiui/index.html" ]; then