feat: add managed SSH execution spaces

Add managed SSH Hosts and projects with signed side-by-side GoodBuddy Agent and OpenCode Runtime installation, Ask and Execute workspace access, a Main-owned model bridge, detached Agent lifecycle, durable ACP output recovery, and project activation UI.

Use protocol v2 with bounded FIFO frames over SSH instead of custom credit, priority, batching, or model-message chunking. Mismatched Host Agents now upgrade automatically, an exactly verified Node runtime is reused on-host, and local Portable builds can embed strictly verified Agent artifacts.

Release note: 新增托管 SSH 远程项目，可自动安装或升级签名 Agent/OpenCode Runtime，并在 SSH 断线后继续 Agent 工作和同步未确认输出。

src/agent-daemon/workspace-protocol-methods.test.ts

@@ -0,0 +1,133 @@
+import {
+  mkdtempSync,
+  rmSync,
+  writeFileSync
+} from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { ControllerRegistry } from './controller-registry'
+import { WorkspaceGitService } from './workspace-git-service'
+import { createWorkspaceProtocolMethods } from './workspace-protocol-methods'
+import { WorkspaceRegistry } from './workspace-registry'
+
+const temporaryPaths: string[] = []
+const linuxIt = process.platform === 'linux' ? it : it.skip
+
+afterEach(() => {
+  for (const path of temporaryPaths.splice(0)) {
+    rmSync(path, { recursive: true, force: true })
+  }
+})
+
+describe('workspace protocol methods', () => {
+  linuxIt('registers typed reads and typed read-only failures', async () => {
+    const root = mkdtempSync(join(tmpdir(), 'goodbuddy-methods-'))
+    temporaryPaths.push(root)
+    writeFileSync(join(root, 'hello.txt'), 'hello')
+    const controllers = new ControllerRegistry()
+    const controller = controllers.attach('controller-test')
+    const git = new WorkspaceGitService({
+      gitExecutable: '/bin/false'
+    })
+    const workspaces = new WorkspaceRegistry({
+      controllers,
+      inspectGit: async () => 'not-a-repository'
+    })
+    const methods = createWorkspaceProtocolMethods({
+      workspaces,
+      git,
+      requestTimeoutMs: 1_000
+    })
+    const context = { controller, channelId: 'channel-test' }
+    const validated = (await methods['workspace/validate'](
+      {
+        remoteRootPath: root,
+        requestedAccess: 'read-only',
+        requiredCapabilities: ['read-text']
+      },
+      context
+    )) as {
+      handle: {
+        workspaceId: string
+        generation: number
+      }
+    }
+    await expect(
+      methods['workspace/readText'](
+        {
+          workspaceId: validated.handle.workspaceId,
+          generation: validated.handle.generation,
+          relativePath: 'hello.txt',
+          offsetBytes: 0,
+          maximumBytes: 100
+        },
+        context
+      )
+    ).resolves.toMatchObject({ content: 'hello' })
+    await expect(
+      methods['workspace/writeTextAtomic']({}, context)
+    ).rejects.toMatchObject({ code: 'read-only' })
+    await expect(
+      methods['git/operation']({}, context)
+    ).rejects.toMatchObject({ code: 'read-only' })
+  })
+
+  linuxIt('revokes all connection grants when the connection closes', async () => {
+    const root = mkdtempSync(join(tmpdir(), 'goodbuddy-methods-'))
+    temporaryPaths.push(root)
+    writeFileSync(join(root, 'hello.txt'), 'hello')
+    const controllers = new ControllerRegistry()
+    const controller = controllers.attach('controller-test')
+    const workspaces = new WorkspaceRegistry({
+      controllers,
+      inspectGit: async () => 'not-a-repository'
+    })
+    const methods = createWorkspaceProtocolMethods({
+      workspaces,
+      git: new WorkspaceGitService({ gitExecutable: '/bin/false' })
+    })
+    const connection = new AbortController()
+    const context = {
+      controller,
+      channelId: 'channel-test',
+      signal: connection.signal
+    }
+    const validated = (await methods['workspace/validate'](
+      {
+        remoteRootPath: root,
+        requestedAccess: 'read-only',
+        requiredCapabilities: []
+      },
+      context
+    )) as {
+      handle: {
+        workspaceId: string
+        workspaceIdentity: string
+        generation: number
+      }
+    }
+    const opened = (await methods['workspace/open'](
+      {
+        workspaceIdentity: validated.handle.workspaceIdentity,
+        requestedAccess: 'read-only'
+      },
+      context
+    )) as {
+      workspaceId: string
+      generation: number
+    }
+    expect(workspaces.activeHandleCount()).toBe(2)
+
+    connection.abort()
+
+    expect(workspaces.activeHandleCount()).toBe(0)
+    await expect(
+      workspaces.get(
+        opened.workspaceId,
+        opened.generation,
+        controller
+      )
+    ).rejects.toMatchObject({ code: 'workspace-not-found' })
+  })
+})