feat: slash system / input service / agent scope

packages/client/connection/src/client/api.ts

@@ -9,6 +9,7 @@ export type {
   ApiProxy, SessionsApi, SessionSummary, HostApi, EventsApi, MuxFrame, HostFrame,
   ApprovalResponsePayload, QuestionResponsePayload, HistoryEntry, ToolEventView,
   WorkspaceApi, WorkspaceId, WorkspaceView,
+  CommandsApi, CommandDescriptor, CommandExecuteResult, SkillsApi, SkillEntry,
 } from '@deepseek-ai/dsh-host-apiproxy/api'
 export type { ToolCallView, ToolResultView } from '@deepseek-ai/dsh-tools/presentation'
 export type {

packages/client/connection/src/client/fixture.ts

@@ -347,10 +347,11 @@ class FxInbox<F> implements StreamConn<F> {
  * @returns an ApiProxy backed entirely by in-memory state — no host process, no network.
  */
 export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
+  // The resident fixture sessions all carry history, so none of them is blank.
   const sessions: SessionSummary[] = options.empty ? [] : [
-    { sessionId: sid('fx-alpha'), updatedAt: Date.now(), running: true, cwd: '/tmp/fixture' },
-    { sessionId: sid('fx-beta'), updatedAt: Date.now() - 60_000, running: false, parentSessionId: sid('fx-alpha'), cwd: '/tmp/fixture' },
-    { sessionId: sid('fx-gamma'), updatedAt: Date.now() - 120_000, running: false, cwd: '/tmp/fixture' },
+    { sessionId: sid('fx-alpha'), updatedAt: Date.now(), running: true, blank: false, cwd: '/tmp/fixture' },
+    { sessionId: sid('fx-beta'), updatedAt: Date.now() - 60_000, running: false, blank: false, parentSessionId: sid('fx-alpha'), cwd: '/tmp/fixture' },
+    { sessionId: sid('fx-gamma'), updatedAt: Date.now() - 120_000, running: false, blank: false, cwd: '/tmp/fixture' },
   ]
   const logs = new Map<SessionId, SessionEvent[]>([[sid('fx-alpha'), buildAlphaLog()]])
   const nextTurn = new Map<SessionId, number>([[sid('fx-alpha'), 60]])
@@ -582,12 +583,13 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
           }
         }
         const created: SessionSummary = {
-          sessionId: requestedId ?? sid(`fx-${nextSession++}`), updatedAt: Date.now(), running: false, cwd,
+          sessionId: requestedId ?? sid(`fx-${nextSession++}`), updatedAt: Date.now(), running: false, blank: true, cwd,
         }
         sessions.push(created)
         attachedSessions += 1
         const emitSession = (): void => {
-          emitHost({ type: 'host/session-added', sessionId: created.sessionId, cwd })
+          // Mirrors the host: the frame fires at creation, so blank is constantly true.
+          emitHost({ type: 'host/session-added', sessionId: created.sessionId, blank: true, cwd })
         }
         if (workspace !== undefined && options.failWorkspaceAttach) {
           emitSession()
@@ -628,6 +630,8 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
           })
         }
         summary.updatedAt = Date.now()
+        // First accepted prompt appends events: the summary stops being blank.
+        summary.blank = false
         const userText = content.map(b => (b.type === 'text' ? b.text : '')).join('')
         if (mode === 'steer' && replays.has(id)) {
           // Steering: insert a steering message into the current turn; the replay continues.
@@ -738,6 +742,70 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
         return ok(request, { workspace: { ...workspace } })
       },
     },
+    commands: {
+      // The catalog mirrors one session's effective view (every fixture
+      // session has an agent, like the real host).
+      list: (request) => {
+        const summary = summaryOf(request.payload.sessionId)
+        if (summary === undefined) {
+          return err(request, {
+            code: 'session-not-found',
+            message: `no session ${request.payload.sessionId}`,
+            details: { sessionId: request.payload.sessionId },
+          })
+        }
+        return ok(request, {
+          commands: [
+            { name: 'compact', description: 'fixture：压缩当前会话上下文' },
+            { name: 'echo', description: 'fixture：回显参数', input: { hint: 'text to echo' } },
+            { name: 'goal-fixture', description: 'fixture：目标样本命令', input: { hint: '<objective>' } },
+          ],
+        })
+      },
+      execute: (request) => {
+        const summary = summaryOf(request.payload.sessionId)
+        if (summary === undefined) {
+          return err(request, {
+            code: 'session-not-found',
+            message: `no session ${request.payload.sessionId}`,
+            details: { sessionId: request.payload.sessionId },
+          })
+        }
+        const line = request.payload.line.trim()
+        const match = /^\/(\S+)(?:\s+(.*))?$/.exec(line)
+        const name = match?.[1]
+        if (name === 'compact' || name === 'echo') {
+          return ok(request, {
+            matched: true as const,
+            result: { kind: 'success' as const, text: name === 'echo' ? (match?.[2] ?? '') : 'fixture：已压缩（假动作）' },
+          })
+        }
+        if (name === 'goal-fixture') {
+          return ok(request, {
+            matched: true as const,
+            result: { kind: 'success' as const, text: `fixture：goal 已设置（${request.payload.sessionId}）` },
+          })
+        }
+        return ok(request, { matched: false as const })
+      },
+    },
+    skills: {
+      list: (request) => {
+        const summary = summaryOf(request.payload.sessionId)
+        if (summary === undefined) {
+          return err(request, {
+            code: 'session-not-found',
+            message: `no session ${request.payload.sessionId}`,
+            details: { sessionId: request.payload.sessionId },
+          })
+        }
+        return ok(request, {
+          skills: [
+            { name: 'fixture-demo', description: 'fixture 技能样本', whenToUse: '仅供 UI 目录渲染验收' },
+          ],
+        })
+      },
+    },
     events: {
       async *mux(_request, signal) {
         const conn = new FxInbox<MuxFrame>()
@@ -855,6 +923,10 @@ export class FixtureApiClient extends AbstractApiClient {
       case 'workspace.create': return this.api.workspace.create(request)
       case 'workspace.rename': return this.api.workspace.rename(request)
       case 'workspace.insertSessionBefore': return this.api.workspace.insertSessionBefore(request)
+      case 'command.list': return this.api.commands.list(request)
+      // The in-memory execute never blocks, so a never-aborting signal is faithful here.
+      case 'command.execute': return this.api.commands.execute(request, new AbortController().signal)
+      case 'skill.list': return this.api.skills.list(request)
     }
   }
 

packages/client/connection/src/client/index.ts

@@ -14,6 +14,7 @@ export type {
   ApiProxy, SessionsApi, SessionSummary, HostApi, EventsApi, MuxFrame, HostFrame,
   ApprovalResponsePayload, QuestionResponsePayload, HistoryEntry, ToolEventView,
   ToolCallView, ToolResultView, WorkspaceApi, WorkspaceId, WorkspaceView,
+  CommandsApi, CommandDescriptor, CommandExecuteResult, SkillsApi, SkillEntry,
   RpcRequest, RpcResponse, RpcResult, RpcError, RpcErrorCode,
   ClientRequest, ServerResponse, ServerRequest, ClientResponse, RpcMessage, RpcReceipt,
   IApiClient, SessionId, SessionEvent, ContentBlock, StreamChunk,