fix(lint,skills): make the reflow-prop fix faithful, not a lossy scale swap

The previous fixHint and skill guidance told agents to "settle via scale" for
text-reflow props — but uniform scale resizes the glyphs, it does not change
the gaps between them, so swapping a letterSpacing tween for scale lints clean
while silently animating a different thing.

Make the guidance faithful per property:
- fontSize -> scale (same visual, sub-pixel smooth).
- letterSpacing / wordSpacing -> split the text into per-character elements and
  animate each glyph's x (the spread); uniform scale is NOT equivalent. Or hold
  the value statically if it's a minor flourish.

Add a "preserve the intent" principle to gsap-transforms-and-perf.md: a fix must
reproduce the same start/end state and trajectory and be verified against the
ORIGINAL render, not just pass lint — lint-clean-and-smooth is not the bar,
faithful-and-smooth is.

Redo the vignette demo title with the faithful per-glyph x spread (15.12px =
(0.32em-0.18em)*108px, centered about 8 chars). Render-verified: settled
endpoint matches the original at 46.5 dB, settle is smooth (24/24 unique frames).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

skills-manifest.json

@@ -18,7 +18,7 @@
       "files": 1
     },
     "hyperframes-animation": {
-      "hash": "b15d63381aab5852",
+      "hash": "a23faee17396c153",
       "files": 115
     },
     "hyperframes-cli": {