Merge remote-tracking branch 'origin/master' into feat/send-unify

# Conflicts:
#	packages/client/runtime/src/client/sessions/fold-adapter.ts

packages/host/runtime/src/api-proxy.ts

@@ -4,7 +4,7 @@
  */
 
 import { randomUUID } from 'node:crypto'
-import { stat } from 'node:fs/promises'
+import { mkdir, stat } from 'node:fs/promises'
 import type { Context } from 'cordis'
 import type { Agent, AgentStatus } from '@deepseek-ai/dsh-agent'
 import type { ContentBlock, MessageSource } from '@deepseek-ai/dsh-llm'
@@ -407,8 +407,18 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
         const sessionId = `session-${randomUUID()}` as SessionId
         // A session's cwd is its project path. When the creator does not choose
         // one, the default project is the host-level default (the host process
-        // working directory unless boot overrides it).
+        // working directory unless boot overrides it). Ensure the directory
+        // exists so Create-workspace and typed paths land on a real folder.
         const cwd = request.payload.cwd ?? defaults.cwd
+        try {
+          await mkdir(cwd, { recursive: true })
+        } catch (error: unknown) {
+          return err(request, {
+            code: 'internal',
+            message: `failed to ensure project directory "${cwd}": ${String(error)}`,
+            details: {},
+          })
+        }
         const handle = await ctx.agents.create({ sessionId, agentOptions, meta: { cwd } })
         return ok(request, { sessionId: handle.agent.id })
       },

packages/host/runtime/tests/host-runtime.spec.ts

@@ -1,4 +1,4 @@
-import { mkdirSync, mkdtempSync, writeFileSync } from 'node:fs'
+import { existsSync, mkdirSync, mkdtempSync, writeFileSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
@@ -231,6 +231,29 @@ describe('sessions.create / list', () => {
     expect(first?.running).toBe(false)
     expect(first?.parentSessionId).toBeUndefined()
   })
+
+  it('ensures a missing project directory before minting the session', async () => {
+    const { api } = await boot()
+    const root = mkdtempSync(join(tmpdir(), 'dsh-host-create-cwd-'))
+    const cwd = join(root, 'nested', 'workspace')
+    expect(existsSync(cwd)).toBe(false)
+    const { sessionId } = expectOk(await api.sessions.create(request({ cwd })))
+    expect(existsSync(cwd)).toBe(true)
+    const { items } = expectOk(await api.sessions.list(request({})))
+    expect(items.find(item => item.sessionId === sessionId)?.cwd).toBe(cwd)
+  })
+
+  it('fails loud when the project directory cannot be created', async () => {
+    const { api } = await boot()
+    const root = mkdtempSync(join(tmpdir(), 'dsh-host-create-cwd-fail-'))
+    const blocker = join(root, 'file-not-dir')
+    writeFileSync(blocker, 'x')
+    const response = await api.sessions.create(request({ cwd: join(blocker, 'child') }))
+    expect(response.result.ok).toBe(false)
+    if (response.result.ok) throw new Error('expected mkdir failure')
+    expect(response.result.error.code).toBe('internal')
+    expect(response.result.error.message).toMatch(/failed to ensure project directory/)
+  })
 })
 
 describe('sessions.prompt / cancel', () => {