refactor(animations): converge P1 motion durations to ≤300ms target

- 151 scripted + 1 manual duration fixes across 46 files
- framer entrance 0.5/0.6s -> 0.3s
- Tailwind hover -> duration-150, entrance -> duration-300
- preserve flip-clock/page-transition per semantic decision
- design-system.ts dead-code deferred
- P1 violations 156 -> 5; P0 remains 0; OK class 249 -> 400
- verified: tsc clean, eslint 0 errors
- verified: 130/130 jest suites, 1573 passed
- verified: visual regression 46/46 zero-pixel diff

Co-Authored-By: 阿睿 <workbuddy@tencent.com>

src/components/detail/detail-cta-section.tsx

@@ -37,7 +37,7 @@ export function DetailCTASection({
           initial={{ opacity: 0, y: 32 }}
           whileInView={{ opacity: 1, y: 0 }}
           viewport={{ once: true, margin: '-100px' }}
-          transition={{ duration: 0.7, ease: [0.22, 1, 0.36, 1] }}
+          transition={{ duration: 0.3, ease: [0.22, 1, 0.36, 1] }}
           className="max-w-3xl"
         >
           {/* 标签 */}
@@ -77,7 +77,7 @@ export function DetailCTASection({
             initial={{ opacity: 0 }}
             whileInView={{ opacity: 1 }}
             viewport={{ once: true }}
-            transition={{ delay: 0.5, duration: 0.6 }}
+            transition={{ delay: 0.5, duration: 0.3 }}
             className="mt-10 text-sm text-white/50"
           >
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