refactor(ui): delete legacy static website and refresh documentation

s2s-frontend/src/styles/legacy-theme.css

@@ -4320,8 +4320,7 @@ html[data-theme="white"] .markdown-content a {
 
 /* ─── Webcam preview (camera tool) — CURRENTLY HIDDEN BY DEFAULT ─────────────
  * Floating self-view, bottom-left. Mirrored for the user; the frame sent to
- * the model is drawn un-mirrored. Markup is retained for future reactivation.
- * To enable it, remove hidden from cam-pip in index.html and restore the main.js listener. */
+ * the model is drawn un-mirrored. Camera controls are omitted from the React view. */
 .cam-pip {
   position: fixed;
   left: 20px;
@@ -4577,12 +4576,12 @@ html[data-theme="white"] .markdown-content a {
    light mobile S2S_THEME="white")
    ═══════════════════════════════════════════════════════════════════════ */
 
-/* Anti-FOUC veil: until fetchConfig() resolves, <html> does not carry any
+/* Anti-FOUC veil: until configuration resolves, <html> does not carry any
    `data-theme` attribute yet. Keep every parallel UI block tagged with
    `data-theme-only` INVISIBLE in that window so the user never sees the
    purple orb flash-and-disappear on `S2S_THEME=white` deploys, nor the
    light-blue mic flash on dark deploys.
-   As soon as fetchConfig runs (main.js fetchConfig → root.setAttribute)
+   Once App.tsx applies the resolved theme,
    the html tag receives either data-theme="dark" or data-theme="white"
    → this guard stops applying → the correctly gated branch paints. */
 html:not([data-theme]) [data-theme-only] {
@@ -4650,7 +4649,7 @@ html[data-theme="white"] .bubble-stack {
    Light mobile "Vocero app" theme matching the provided screenshot:
    pure white background, deep blue accents, card-based UI, avatar+timestamp
    per chat bubble, rounded input with clip+send.
-   Activated on <html data-theme="white"> (main.js sets the attr from
+   Activated on <html data-theme="white"> (App.tsx sets the attribute from
    /api/config response). All selectors below are scoped to that attribute
    so the native dark theme is 100% preserved when the flag is off.
    ═══════════════════════════════════════════════════════════════════════ */