fix(cli): score apple-touch-icon-precomposed at the 180px default

[miguel-heygen]

What changed

The favicon ranker's declaredSize() matches the rel token apple-touch-icon
exactly. rel="apple-touch-icon-precomposed" is one token, not two, so it
fell through to a score of 0 instead of the 180px Apple default — even though
the selector (link[rel*="icon"]) already collects it. Same page, one
spelling apart, opposite winner inside tier 1: it never drops a candidate and
never beats the .ico tier, so it only mis-orders within the middle tier.

Fix: startsWith("apple-touch-icon") on the token instead of an exact match.
mask-icon keeps its own exact-token check (isMaskIcon), where a longer
rel really would be a different asset.

What I measured

Reverted the fix locally (exact-token match) and reran the new test:

FAIL  src/capture/faviconRanker.test.ts > rankIconCandidates > scores apple-touch-icon-precomposed at the same 180px default as apple-touch-icon
AssertionError: expected [ …(2) ] to deeply equal [ …(2) ]
- Expected
+ Received
  [
-   "https://x.test/apple-touch-icon-precomposed.png",
    "https://x.test/favicon-32.png",
+   "https://x.test/apple-touch-icon-precomposed.png",
  ]

With the fix restored:

✓ src/capture/faviconRanker.test.ts (12 tests) 3ms
Test Files  1 passed (1)
     Tests  12 passed (12)

bunx tsc --noEmit in packages/cli: same three pre-existing errors on both
origin/main and this branch (missing generated runtime files, unrelated to
this change) — no new errors introduced.

What I did NOT exercise

• The live capture path end to end (no headless browser run against a real
  page declaring apple-touch-icon-precomposed). This is a pure ranking-unit
  change; the download loop and page-evaluate extraction it feeds into are
  untouched.
• <link rel="manifest"> icons and data: URI hrefs, both called out as
  pre-existing gaps in the original PR's review and out of scope here.

[jerrai-bot-heygen]

Reviewed at exact head 4f8f102b11388bd059e0bc6119a5a9c5b71428a4.

The token-safe prefix match correctly gives unsized apple-touch-icon-precomposed the same 180px default as apple-touch-icon, without changing exact mask-icon handling or the mask-last tier. The new A/B fixture fails with the prior exact-token logic and preserves the other ranking tiers.

Completed checks are green; remaining CI jobs are pending and no check is red.

— Jerrai