fix(a11y): reduced-motion for spinner/call-avatar; tap-to-skip boot; AA accent contrast

- SendingSpinClass and CallAvatarAnimation respect prefers-reduced-motion
  (static opacity fallback), matching MsgAppearClass.
- Terminal boot overlay dismisses on click/tap and is aria-hidden.
- Primary.Main: Midnight #6b7ca8 -> #6f80aa (4.29 -> 4.51:1), Lotus
  Terminal Light #c44e00 -> #ba4a00 (4.14 -> 4.52:1), hue preserved.

Fixes #84
Fixes #86
Fixes #52

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

src/app/styles/Animations.css.ts

@@ -36,25 +36,46 @@ const glowPulse = keyframes({
   },
 });
 
+// Wobble/glow/spin only run under the same no-preference guard as
+// MsgAppearClass below; prefers-reduced-motion users get a static state.
 export const WobbleAnimation = style({
-  animation: `${wobble} 2000ms ease-in-out`,
-  animationIterationCount: 'infinite',
+  '@media': {
+    '(prefers-reduced-motion: no-preference)': {
+      animation: `${wobble} 2000ms ease-in-out`,
+      animationIterationCount: 'infinite',
+    },
+  },
 });
 
 export const GlowAnimation = style({
-  animation: `${glowPulse} 2000ms ease-out`,
-  animationIterationCount: 'infinite',
+  '@media': {
+    '(prefers-reduced-motion: no-preference)': {
+      animation: `${glowPulse} 2000ms ease-out`,
+      animationIterationCount: 'infinite',
+    },
+  },
 });
 
 export const CallAvatarAnimation = style({
-  animation: `${wobble} 2000ms ease-in-out, ${glowPulse} 2000ms ease-out`,
-  animationIterationCount: 'infinite',
+  '@media': {
+    '(prefers-reduced-motion: no-preference)': {
+      animation: `${wobble} 2000ms ease-in-out, ${glowPulse} 2000ms ease-out`,
+      animationIterationCount: 'infinite',
+    },
+  },
 });
 
 export const SendingSpinClass = style({
   display: 'inline-block',
-  animation: `${spin} 900ms linear infinite`,
   transformOrigin: 'center',
+  // Static fallback: dim instead of spinning when motion is reduced.
+  opacity: 0.6,
+  '@media': {
+    '(prefers-reduced-motion: no-preference)': {
+      animation: `${spin} 900ms linear infinite`,
+      opacity: 1,
+    },
+  },
 });
 
 const msgAppearKeyframe = keyframes({