chore(demos): rebuild full-api demos for v0.7.15 version stamp

The "Verify all generated artifacts" gate flagged demos/full-api-demo*.html and
demos/ultimate-override.css as stale: the v0.7.15 release bump updated
package.json but did not regenerate the committed demos, whose version banner
still read v0.7.14. Regenerated via `node demos/generate.mjs` — the only change
is the v0.7.14 → v0.7.15 stamp.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Claude-Session: https://claude.ai/code/session_01GnwqYHgHNAWPbsUJWUeY1w

Author: claude

demos/full-api-demo-with-overrides.html

@@ -122,7 +122,7 @@
   </nav>
   <main id="main">
     <h1>SLASHED Full API Demo</h1>
-    <p style="color:var(--sf-color-text--muted)">v0.7.14 · full bundle from jsDelivr CDN · 328 classes · 756 tokens (265 configurable)</p>
+    <p style="color:var(--sf-color-text--muted)">v0.7.15 · full bundle from jsDelivr CDN · 328 classes · 756 tokens (265 configurable)</p>
     <div class="notice"><strong>ultimate-override.css is ACTIVE.</strong> Every value below is recomputed from perturbed knob tokens — toggle it off in the toolbar, or compare against <a href="full-api-demo.html">the un-overridden page</a>.</div>
 
     <section id="tokens">

demos/full-api-demo.html

@@ -121,7 +121,7 @@
   </nav>
   <main id="main">
     <h1>SLASHED Full API Demo</h1>
-    <p style="color:var(--sf-color-text--muted)">v0.7.14 · full bundle from jsDelivr CDN · 328 classes · 756 tokens (265 configurable)</p>
+    <p style="color:var(--sf-color-text--muted)">v0.7.15 · full bundle from jsDelivr CDN · 328 classes · 756 tokens (265 configurable)</p>
     <div class="notice">Baseline render with default tokens. Use the toolbar to switch theme, toggle the ultimate override live, or replay motion. The always-on override variant is <a href="full-api-demo-with-overrides.html">full-api-demo-with-overrides.html</a>.</div>
 
     <section id="tokens">

demos/ultimate-override.css

@@ -1,6 +1,6 @@
 /* ============================================================================
    ULTIMATE OVERRIDE — generated by demos/generate.mjs (do not edit by hand)
-   SLASHED v0.7.14
+   SLASHED v0.7.15
 
    Perturbs every CONFIGURABLE (role: "knob") token to a valid, visibly-distinct
    value so full-api-demo.html can prove each one is wired end to end.