[guofoo]

New apps currently inherit a starter icon with baked rounded corners, and the icon guide recommends padding that differs from the approved OctoSense family. Align new app artwork with the approved format: a 64-point square master, central 66% foreground, restrained illustrated objects and colors, and platform framing owned by the shell.

Update the icon-topic owner and its Chinese twin, root/template agent instructions, first-app guides, template READMEs and the starter SVG. Authors must replace the starter identity with a distinct app icon, declare one canonical bundle asset, and review 64/40/24 px and platform frames. Store apps retain their own artwork and do not enter OctoSense's built-in overlay. Admission compatibility, catalog data and published bundles are unchanged.

The visual system is pinned to the approved source from OctoSense PR #555. App Flow has a matching authoring/template update.

Validation:

• Relative Markdown link checks: 0 broken, 0 pending; whitespace checks pass.
• The SVG parses, uses a full-bleed square background without baked corners, is byte-identical to App Flow's starter, and has raster-measured foreground bounds within the central 66%.
• Static macOS/Android/iOS frame previews were inspected at 64/40/24 px.
• A current pinned Hub CLI was built from the OctoSense workspace. A disposable copy of the card starter passes icon file checks and retains only its expected entry/listing refusals. No screenshot placeholders were added.

Native UI and device rendering were not exercised for this documentation/template change. Design conformity remains a visual-review requirement, not a new gate refusal.