feat: 补全剩余 6 个 StreamField Block 前端渲染 (ProductCard/Pricing/Timeline/Team/TechStack/Video)

- types/wagtail.ts 新增对应 6 个 Block 值类型接口及 StreamFieldBlock 联合类型分支
- 新建 6 个渲染组件：ProductCardGrid/Pricing/Timeline/Team/TechStack/Video，风格与既有 Block 一致
- BlockRenderer.tsx 映射表接入新组件，key 与后端 COMMON_BLOCKS 保持一致
- lint/build 均验证通过

types/wagtail.ts

@@ -103,6 +103,70 @@ export interface FormBlockValue {
   form: FormDefinitionValue | null;
 }
 
+export interface ProductCardItemValue {
+  title: string;
+  description?: string;
+  image?: { url: string; title: string } | null;
+  link?: string;
+}
+
+export interface ProductCardBlockValue {
+  heading?: string;
+  items: ProductCardItemValue[];
+}
+
+export interface PricingPlanValue {
+  name: string;
+  price: string;
+  features: string[];
+  highlighted?: boolean;
+  button?: CTAButtonValue | null;
+}
+
+export interface PricingBlockValue {
+  heading?: string;
+  plans: PricingPlanValue[];
+}
+
+export interface TimelineItemValue {
+  year: string;
+  event: string;
+}
+
+export interface TimelineBlockValue {
+  heading?: string;
+  items: TimelineItemValue[];
+}
+
+export interface TeamMemberBlockValue {
+  id: number;
+  name: string;
+  role: string;
+  bio: string;
+  photo: { url: string; title: string } | null;
+}
+
+export interface TeamBlockValue {
+  heading?: string;
+  members: TeamMemberBlockValue[];
+}
+
+export interface TechStackItemValue {
+  icon?: string;
+  label: string;
+}
+
+export interface TechStackBlockValue {
+  heading?: string;
+  items: TechStackItemValue[];
+}
+
+export interface VideoBlockValue {
+  heading?: string;
+  video_url: string;
+  poster?: { url: string; title: string } | null;
+}
+
 export type StreamFieldBlock =
   | { id: string; type: "hero"; value: HeroBlockValue }
   | { id: string; type: "stats"; value: StatsBlockValue }
@@ -112,6 +176,12 @@ export type StreamFieldBlock =
   | { id: string; type: "logo_cloud"; value: LogoCloudBlockValue }
   | { id: string; type: "case_study"; value: CaseStudyBlockValue }
   | { id: string; type: "form"; value: FormBlockValue }
+  | { id: string; type: "product_card"; value: ProductCardBlockValue }
+  | { id: string; type: "pricing"; value: PricingBlockValue }
+  | { id: string; type: "timeline"; value: TimelineBlockValue }
+  | { id: string; type: "team"; value: TeamBlockValue }
+  | { id: string; type: "tech_stack"; value: TechStackBlockValue }
+  | { id: string; type: "video"; value: VideoBlockValue }
   | { id: string; type: "richtext"; value: string };
 
 export interface HomePageDetail extends WagtailPageSummary {