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/service-value.tsx

@@ -63,7 +63,7 @@ export function ServiceValueSection({ service }: ServiceValueSectionProps) {
                   viewport={{ once: true }}
                   transition={{
                     delay: index * 0.06,
-                    duration: 0.5,
+                    duration: 0.3,
                     ease: [0.22, 1, 0.36, 1],
                   }}
                   className="bain-card p-6"
@@ -105,7 +105,7 @@ export function ServiceValueSection({ service }: ServiceValueSectionProps) {
                   viewport={{ once: true }}
                   transition={{
                     delay: index * 0.06,
-                    duration: 0.4,
+                    duration: 0.3,
                     ease: [0.22, 1, 0.36, 1],
                   }}
                   className="bain-card p-5 flex items-start gap-3"
@@ -135,7 +135,7 @@ export function ServiceValueSection({ service }: ServiceValueSectionProps) {
                     viewport={{ once: true }}
                     transition={{
                       delay: index * 0.08,
-                      duration: 0.45,
+                      duration: 0.3,
                       ease: [0.22, 1, 0.36, 1],
                     }}
                     className="bain-card p-5"