`5x/sweep-1.md`

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# 5x sweep 1 — Starling (particle-text)
Target: http://127.0.0.1:4185/

## Six-way result: 6/7 (M3 FAILED)
- M1 HTTP 200 · M2 headless render OK · M3 **FAIL (1 JS error)** · B4/B5/B6 OK · clickthrough 5/5

## Caught
- M3 automation E2E: 1 non-favicon-filtered console error =
  `Failed to load resource: 404` — an auto-requested /favicon.ico with no icon on the page.
  (The 3x favicon filter misses it because Chrome's message text omits the word "favicon".)

## Fix
- Added inline data-URI SVG favicon (+ apple-touch-icon) in <head> → browser no longer
  requests /favicon.ico, eliminating the 404 at the root. Also gives the app a real icon.