feat: add exploration scale list, questions, and scoring

Seed communication-style scale, expose /api/v1/scales APIs, and wire
Explore/Scale H5 pages for the P1 探索测试 path.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/sdk/src/index.ts

@@ -73,6 +73,20 @@ export function createClient(opts: CreateClientOptions) {
         method: 'POST',
         body: { profile_a_id, profile_b_id },
       }),
+    listScales: () =>
+      call<{ items: { slug: string; title: string; description: string }[] }>('/api/v1/scales'),
+    getScale: (slug: string) =>
+      call<{
+        slug: string
+        title: string
+        description: string
+        questions: { id: string; sort: number; body: { prompt: string; options: { key: string; text: string }[] } }[]
+      }>(`/api/v1/scales/${slug}`),
+    submitScale: (slug: string, profile_id: string, answers: Record<string, string>) =>
+      call<{ id: string; result: Record<string, unknown> }>(`/api/v1/scales/${slug}/result`, {
+        method: 'POST',
+        body: { profile_id, answers },
+      }),
   }
 }