Merge remote-tracking branch 'origin/master' into claude/ui-theme-foundation

# Conflicts:
#	.github/workflows/ci.yml
#	package.json

.github/workflows/ci.yml

@@ -296,8 +296,8 @@ jobs:
         if: needs.performance-journeys-scope.outputs.run == 'true'
         runs-on: ubuntu-latest
         # The electron-performance build is the bulk of the time; each journey
-        # (launch, open-source) is six fresh Electron processes plus one
-        # seeding run.
+        # (launch, open-source, playback) is six fresh Electron processes plus
+        # one seeding run.
         timeout-minutes: 30
         # Warn-only for the first two weeks of plan item B3: a failure is
         # visible on the run but does not fail the workflow.
@@ -378,6 +378,12 @@ jobs:
             - name: Validate Angular Material token overrides
               run: pnpm run styles:material-tokens:validate
 
+            # Nx rejects a non-parallel task with continuous dependencies, and
+            # the Playwright plugin infers serve dependencies only when CI is
+            # unset, so this checks both the local and the CI inference.
+            - name: Validate Playwright task graphs
+              run: pnpm run e2e:task-graphs:validate
+
             - name: Typecheck web and Electron entry points
               run: pnpm run typecheck:ci