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/agent-daemon/agent-model-gateway.ts

@@ -313,7 +313,6 @@ export type AgentModelGatewayContext = {
 export class AgentModelGateway {
   readonly #ledger: AgentModelCallLedger
   readonly #fetch: typeof fetch
-  readonly #promptOutputTokens = new Map<string, number>()
 
   constructor(options: {
     ledger: AgentModelCallLedger
@@ -334,24 +333,10 @@ export class AgentModelGateway {
   }> {
     signal.throwIfAborted()
     const request = remoteModelGatewayRequestSchema.parse(requestInput)
-    const promptKey = `${context.bindingId}\0${context.operationId}`
-    const usedOutputTokens = this.#promptOutputTokens.get(promptKey) ?? 0
-    const remainingOutputTokens =
-      context.profile.limits.maximumTotalOutputTokens - usedOutputTokens
-    if (remainingOutputTokens < 1) {
-      throw new AgentModelGatewayError(
-        'policy',
-        'Prompt total output token limit is exhausted'
-      )
-    }
-    const reservedOutputTokens = Math.min(
-      context.profile.limits.maximumOutputTokens,
-      remainingOutputTokens
-    )
     const prepared = prepareProviderRequest(
       context.profile,
       request,
-      reservedOutputTokens
+      context.profile.limits.maximumOutputTokens
     )
     const requestDigest = sha256(prepared.canonicalRequest)
     const callId = createAgentModelCallId(context)
@@ -444,14 +429,6 @@ export class AgentModelGateway {
       headers,
       bodyBase64: Buffer.from(bytes).toString('base64')
     })
-    this.#promptOutputTokens.set(
-      promptKey,
-      usedOutputTokens +
-        Math.min(
-          reservedOutputTokens,
-          responseOutputTokens(bytes) ?? reservedOutputTokens
-        )
-    )
     this.#ledger.complete(callId)
     let finalized = false
     return {
@@ -474,9 +451,6 @@ export class AgentModelGateway {
     }
   }
 
-  finalizePrompt(bindingId: string, operationId: string): void {
-    this.#promptOutputTokens.delete(`${bindingId}\0${operationId}`)
-  }
 }
 
 export function createAgentModelCallId(
@@ -598,29 +572,6 @@ function prepareProviderRequest(
   }
 }
 
-function responseOutputTokens(body: Uint8Array): number | undefined {
-  let value: unknown
-  try {
-    value = JSON.parse(new TextDecoder().decode(body))
-  } catch {
-    return undefined
-  }
-  if (value === null || typeof value !== 'object' || Array.isArray(value)) {
-    return undefined
-  }
-  const usage = (value as { usage?: unknown }).usage
-  if (usage === null || typeof usage !== 'object' || Array.isArray(usage)) {
-    return undefined
-  }
-  const record = usage as Record<string, unknown>
-  const tokens = record.output_tokens ?? record.completion_tokens
-  return typeof tokens === 'number' &&
-    Number.isSafeInteger(tokens) &&
-    tokens >= 0
-    ? tokens
-    : undefined
-}
-
 function providerUrl(profile: AgentPromptModelProfile): URL {
   const url = new URL(profile.baseUrl)
   const path = url.pathname.replace(/\/+$/u, '')