chore: extract ShareServer into its own repository

Move the existing Hono API, React console, tests, build configuration,
and feature documentation from GoodBuddy into a standalone project.
Keep the current interactive-prototype behavior and production limitations.

Document the source commit and sibling-checkout links to the authoritative
Desktop network architecture. Independent install, tests, typecheck, lint,
build, and built-service HTTP smoke checks passed.

server/app.test.ts

@@ -0,0 +1,40 @@
+// @vitest-environment node
+import { describe, expect, it } from 'vitest'
+import { app } from './app.js'
+
+describe('ShareServer prototype API', () => {
+  it('reports prototype readiness without claiming production readiness', async () => {
+    const response = await app.request('/api/v1/public/ready')
+    expect(response.status).toBe(200)
+    await expect(response.json()).resolves.toMatchObject({
+      status: 'ready',
+      mode: 'interactive-prototype',
+      productionReady: false
+    })
+  })
+
+  it('returns the organization-scoped console snapshot', async () => {
+    const response = await app.request('/api/v1/web/prototype/snapshot')
+    expect(response.status).toBe(200)
+    await expect(response.json()).resolves.toMatchObject({
+      instance: { organization: 'MesaLab' },
+      pages: {
+        devices: expect.any(Array),
+        approvals: expect.any(Array),
+        myDevices: expect.any(Array)
+      }
+    })
+  })
+
+  it('rejects malformed prototype actions', async () => {
+    const response = await app.request('/api/v1/web/prototype/actions', {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ action: '批准申请' })
+    })
+    expect(response.status).toBe(400)
+    await expect(response.json()).resolves.toMatchObject({
+      code: 'INVALID_PROTOTYPE_ACTION'
+    })
+  })
+})