pkg: wire GUI's DoD harness into CI, mark live-veloxd conformance required

gui-dod (per-PR: scroll-60fps + unhappy-path) and gui-dod-nightly (rss-flat,
schedule/workflow_dispatch) are live in ci.yml, driving GUI's newly-landed
gui/tests/dod/run.sh + gui-dod-harness. No Xvfb step: run.sh already runs
QT_QPA_PLATFORM=offscreen itself.

Each gate forced red once before being trusted (tests/integration/README.md
has the transcripts): VELOX_DOD_FRAME_BUDGET_MS=0.01 for scroll-60fps,
VELOX_DOD_RSS_SLACK_KIB=-999999999 for rss-flat, and — since run.sh always
starts a working mockd — a direct gui-dod-harness invocation against an
unreachable socket for unhappy-path, which hit the harness's own 75s
watchdog exactly as documented.

Recorded GUI's live finding (gui/docs/proto-requests-m1.md) that mockd
--drop-connection is a no-op over the UDS transport, so unhappy-path's
drop-connection phase can't yet exercise a real drop — coordinating with
PROTO on the fix rather than working around it locally. gui-dod stays
required regardless: its other two phases and the crash/hang/watchdog paths
still catch real regressions.

Added gui-dod to BRANCH_PROTECTION.md's required-checks table.

ADR 0019: the live-veloxd conformance runner (run.sh step 3b, already
unconditional inside the already-required conformance job) stays required
as PROTO's xfail list shrinks (18 entries now, down from 34; 57/57 fixtures
passing on main). No CI change needed — it was already inside a required
check; this records the decision not to carve out an exception for it.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RBPR7iM3YPyxrjWsVtZDPJ

.github/BRANCH_PROTECTION.md

@@ -18,8 +18,9 @@ policy so it can be re-applied or audited.
   | `bootstrap-script-2604` | now — real `--with-clang` install in a 26.04 container; the release the project ships on |
   | `build (gcc)` / `build (clang)` | now — core, daemon and gui have merged |
   | `sanitizers (dev)` / `sanitizers (tsan)` | now — core, daemon and gui have merged |
-  | `conformance` | **now — `tests/conformance/` has landed; this is the M0 exit gate** |
+  | `conformance` | **now — `tests/conformance/` has landed; this is the M0 exit gate.** Includes the live-`veloxd` runner (step 3b of `run.sh`), unconditional in the script — see `docs/adr/0019-live-veloxd-conformance-is-required.md`. |
   | `extension-lint` | now — `extension/` has merged (MV3 manifest + esbuild build) |
+  | `gui-dod` | now — `gui/tests/dod/` has landed (GUI M1 DoD gates R3: `scroll-60fps`, `unhappy-path`); see `tests/integration/README.md#gui-m1-definition-of-done-gates-r3`. `gui-dod-nightly` (`rss-flat`) is schedule-only and cannot be a required PR check. |
 
   `clang-tidy` is intentionally **not** required through M1 (`continue-on-error: true`,
   `.clang-tidy` has `WarningsAsErrors: ''`). Make it required at M2.

.github/workflows/ci.yml

@@ -248,3 +248,56 @@ jobs:
         run: cmake --build --preset dev --target veloxd
       - name: Nightly integration run
         run: python3 tests/integration/nightly_run.py --veloxd build/dev/bin/veloxd --tasks 50 --timeout 180
+
+  gui-dod:
+    # Per-PR GUI M1 DoD gates (gui/docs/pkg-qa-requests-m1.md R3): scroll-60fps and
+    # unhappy-path. The 10-minute rss-flat gate is gui-dod-nightly, not here. GUI's
+    # harness defaults QT_QPA_PLATFORM=offscreen itself, so no Xvfb/compositor needed.
+    # See tests/integration/README.md#gui-m1-definition-of-done-gates-r3 for what each
+    # gate catches and the forced-failure transcript proving it isn't vacuous.
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Bootstrap toolchain
+        run: sudo ./tools/bootstrap.sh
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'          # tools/mockd
+      - name: Configure + build
+        run: |
+          cmake --preset dev
+          cmake --build --preset dev --target gui-dod-harness
+      - name: Install mockd
+        run: cd tools/mockd && npm ci
+      - name: Gates
+        run: |
+          gui/tests/dod/run.sh scroll-60fps  --json scroll.json
+          gui/tests/dod/run.sh unhappy-path  --json unhappy.json
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: gui-dod-${{ github.run_id }}
+          path: "*.json"
+
+  gui-dod-nightly:
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Bootstrap toolchain
+        run: sudo ./tools/bootstrap.sh
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+      - name: Configure + build
+        run: |
+          cmake --preset dev
+          cmake --build --preset dev --target gui-dod-harness
+      - run: cd tools/mockd && npm ci
+      - name: RSS soak (10 min)
+        run: gui/tests/dod/run.sh rss-flat --json rss.json
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: gui-dod-rss-${{ github.run_id }}
+          path: rss.json