fix(template): UIUX Designer cron from 15min to hourly (#306)

Closes #306. The cron expression was "5,20,35,50 * * * *" (every 15
min = 96 ticks/day) despite the schedule being named "Hourly UI/UX
audit". Each tick launches Chromium, takes 8 screenshots, runs them
through Claude vision, and delegates to PM — 768 vision calls/day
from one workspace with no meaningful delta between ticks (canvas UI
only changes on deploys).

Changed to "5 * * * *" (hourly, at :05 past the hour). 6x reduction
in cost + noise.

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

org-templates/molecule-dev/org.yaml

@@ -801,7 +801,11 @@ workspaces:
               6. Wait for tasks from Dev Lead.
             schedules:
               - name: Hourly UI/UX audit with live screenshots
-                cron_expr: "5,20,35,50 * * * *"
+                # #306: was "5,20,35,50 * * * *" (every 15 min — 96
+                # ticks/day × 8 screenshots × vision = runaway cost).
+                # Hourly matches the schedule name and is sufficient
+                # because the canvas UI only changes on deploys.
+                cron_expr: "5 * * * *"
                 prompt: |
                   Hourly UX audit of the live Molecule AI canvas. Take real screenshots
                   and analyse actual user flows. The runtime discovered a working Chromium