diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b665c6735d..df99b771ae 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -758,11 +758,23 @@ jobs:
       - uses: ./.github/actions/npm-ci-retry
       # The second test runner (CLAUDE.md: "Both test runners must pass") — was never
       # wired into CI until the 2026-06-09 quality audit (Fase 6A.2).
-      - run: npm run test:vitest
+      # WS5.2/5.3 (v3.8.49 plan): JUnit output feeds Trunk Flaky Tests (advisory upload
+      # below). node:test stays OUT of the first wave (fd1-sensitive reporter stream).
+      - run: npm run test:vitest -- --reporter=default --reporter=junit --outputFile.junit=trunk-junit/vitest-mcp.xml
       # vitest:ui went back to 870/870 green in the v3.8.49 quality plan (WS6.1,
       # PR #7127 — 69 fails triaged: matchMedia polyfill, node:test→vitest migration,
       # CompareTab D22 cap). Promoted to BLOCKING per the plan's post-merge step.
-      - run: npm run test:vitest:ui
+      - run: npm run test:vitest:ui -- --reporter=default --reporter=junit --outputFile.junit=trunk-junit/vitest-ui.xml
+      # Trunk Flaky Tests upload — advisory (never blocks), own-origin only (fork PRs
+      # have no TRUNK_TOKEN). Pinned by SHA (tag v2.1.2).
+      - name: Upload test results to Trunk (advisory)
+        if: ${{ always() && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) }}
+        continue-on-error: true
+        uses: trunk-io/analytics-uploader@385f1ccdf345b4532dc4b6c665dd432b702b8e28 # v2.1.2
+        with:
+          junit-paths: trunk-junit/**/*.xml
+          org-slug: omniroute
+          token: ${{ secrets.TRUNK_TOKEN }}
 
   # Node 24/26 compatibility matrices moved to .github/workflows/nightly-compat.yml
   # (plano mestre testes+CI, Eixo D2 — they cost ~28% of every heavy run to catch a
@@ -1052,16 +1064,26 @@ jobs:
       - name: Run E2E tests (duration-balanced shard)
         env:
           SHARD: ${{ matrix.shard }}
+          PLAYWRIGHT_JUNIT_OUTPUT_NAME: junit-e2e-results.xml
         run: |
           if FILES=$(node scripts/quality/balance-e2e-shards.mjs "$SHARD" 9); then
             if [ -z "$FILES" ]; then echo "[e2e-balance] shard $SHARD has no files"; exit 0; fi
             echo "[e2e-balance] shard $SHARD runs:"; echo "$FILES"
             # shellcheck disable=SC2086 — FILES is our own newline-separated path list
-            npx playwright test $(echo "$FILES" | tr '\n' ' ')
+            npx playwright test $(echo "$FILES" | tr '\n' ' ') --reporter=line,junit
           else
             echo "[e2e-balance] balancer unavailable — plain --shard fallback"
-            npx playwright test tests/e2e/*.spec.ts --shard="$SHARD"/9
+            npx playwright test tests/e2e/*.spec.ts --shard="$SHARD"/9 --reporter=line,junit
           fi
+      # WS5.2/5.3: Trunk Flaky Tests upload — advisory, own-origin only, SHA-pinned.
+      - name: Upload test results to Trunk (advisory)
+        if: ${{ always() && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) }}
+        continue-on-error: true
+        uses: trunk-io/analytics-uploader@385f1ccdf345b4532dc4b6c665dd432b702b8e28 # v2.1.2
+        with:
+          junit-paths: junit-e2e-results.xml
+          org-slug: omniroute
+          token: ${{ secrets.TRUNK_TOKEN }}
 
   test-integration:
     name: Integration Tests (${{ matrix.shard }}/2)
diff --git a/changelog.d/maintenance/trunk-flaky-uploads.md b/changelog.d/maintenance/trunk-flaky-uploads.md
new file mode 100644
index 0000000000..89c0e6b853
--- /dev/null
+++ b/changelog.d/maintenance/trunk-flaky-uploads.md
@@ -0,0 +1 @@
+- **CI**: Playwright E2E and both vitest suites now emit JUnit and upload to Trunk Flaky Tests (org `omniroute`) — advisory step, own-origin only, uploader action SHA-pinned (WS5.2/5.3 of the quality plan; node:test stays out of the first wave)