fix: allow concurrent and unrestricted Runtime sessions

Local embedded OpenCode serialized otherwise independent conversations, and GoodBuddy could stop long Runtime tasks after fixed tool, activity, model-call, or accumulated display-output limits.

Different conversations can now run concurrently while requests in the same conversation stay ordered. Dynamic MCP tools remain isolated to the current request. OpenCode, Continue, managed ACP, and the Agent model gateway no longer stop native execution at GoodBuddy-defined call counts or prompt-wide output totals; display copies truncate and transport queues apply backpressure instead. Prompt-wide quota fields are removed from the current contracts.

Per-call model settings, provider request timeouts, cancellation, and same-conversation ordering remain unchanged.

Release note: 修复本机 OpenCode 不同会话互相等待的问题，并移除 GoodBuddy 对单次 Runtime 工具、活动和模型调用次数的人为上限；长输出现在只截断展示或施加传输背压，不再取消原生任务。

src/main/agent/acp-remote-runtime.test.ts

@@ -1544,7 +1544,7 @@ describe('AcpRemoteRuntime', () => {
     })
   })
 
-  it('bounds native subagent output per event and per request', async () => {
+  it('bounds native subagent output per event without a request-wide stop', async () => {
     const client: { value?: AgentSideConnection } = {}
     const server = fakeServer({
       prompt: async ({ sessionId }) => {
@@ -1620,10 +1620,12 @@ describe('AcpRemoteRuntime', () => {
           async () => 'once'
         )
       )
-    ).rejects.toThrow('远端 Runtime 请求输出超过安全上限')
+    ).resolves.toContainEqual(
+      expect.objectContaining({ type: 'done' })
+    )
   })
 
-  it('rejects more than 100 distinct remote tool calls', async () => {
+  it('accepts more than 100 distinct remote tool calls', async () => {
     const client: { value?: AgentSideConnection } = {}
     const server = fakeServer({
       prompt: async ({ sessionId }) => {
@@ -1634,7 +1636,7 @@ describe('AcpRemoteRuntime', () => {
               sessionUpdate: 'tool_call',
               toolCallId: `call-${index}`,
               title: 'tool',
-              status: 'in_progress'
+              status: 'completed'
             }
           })
         }
@@ -1643,17 +1645,18 @@ describe('AcpRemoteRuntime', () => {
     })
     client.value = server.client
 
-    await expect(
-      collect(
-        runtime(server).run(
-          request,
-          new AbortController().signal,
-          async () => 'once'
-        )
+    const events = await collect(
+      runtime(server).run(
+        request,
+        new AbortController().signal,
+        async () => 'once'
       )
-    ).rejects.toThrow(
-      '远端 Runtime 单次运行的工具调用超过 100 个'
     )
+
+    expect(
+      events.filter((event) => event.type === 'tool')
+    ).toHaveLength(101)
+    expect(events.at(-1)).toMatchObject({ type: 'done' })
   })
 
   it('does not impose a default wall-clock deadline on remote prompts', async () => {
@@ -2235,7 +2238,7 @@ describe('AcpRemoteRuntime', () => {
     ])
   })
 
-  it('cancels and truncates a flood when the consumer is slow', async () => {
+  it('backpressures a flood without cancelling the Runtime', async () => {
     const store = new MemoryRuntimeSessionBindingStore()
     const client: { value?: AgentSideConnection } = {}
     const cancel = vi.fn(async () => {})
@@ -2276,15 +2279,26 @@ describe('AcpRemoteRuntime', () => {
       done: false
     })
     await new Promise((resolve) => setTimeout(resolve, 10))
-    await expect(stream.next()).rejects.toThrow('输出已截断')
+    const events = []
+    while (true) {
+      const next = await stream.next()
+      if (next.done) {
+        break
+      }
+      events.push(next.value)
+    }
+    expect(
+      events.filter((event) => event.type === 'text')
+    ).toHaveLength(20)
+    expect(events.at(-1)).toMatchObject({ type: 'done' })
     expect(server.setInboundPaused).toHaveBeenCalledWith(true)
-    expect(server.setInboundPaused).not.toHaveBeenCalledWith(false)
-    expect(cancel).toHaveBeenCalledOnce()
+    expect(server.setInboundPaused).toHaveBeenCalledWith(false)
+    expect(cancel).not.toHaveBeenCalled()
     await expect(
       store.getByConversation(request.conversationId)
     ).resolves.toMatchObject({
-      state: 'outcome-unknown',
-      activePromptOperationId: request.requestId
+      state: 'ready',
+      activePromptOperationId: undefined
     })
   })
 
@@ -2504,8 +2518,6 @@ describe('AcpRemoteRuntime Agent-owned prompts', () => {
     capabilities: { imageInput: false },
     limits: {
       maximumOutputTokens: 4_096,
-      maximumModelCalls: 100,
-      maximumTotalOutputTokens: 409_600,
       requestTimeoutMilliseconds: 60_000
     }
   }