移除对 copilot 的兼容。更新示例和文档，统一使用 session_id 代替 conversationId

dist/chat/sessionBridge.js

@@ -11,7 +11,7 @@ export class ChatSessionBridge {
     }
     async resolve(context) {
         const requestContext = {
-            conversationId: context.conversationId?.trim() || `conv-${randomUUID().slice(0, 12)}`,
+            clientSessionId: context.clientSessionId?.trim() || `agent-${randomUUID().slice(0, 12)}`,
             accessToken: context.accessToken,
             projectId: context.projectId,
             traceId: context.traceId?.trim() || `trace-${randomUUID().slice(0, 12)}`,
@@ -27,13 +27,13 @@ export class ChatSessionBridge {
             }
             catch (error) {
                 logger.warn({
-                    conversationId: requestContext.conversationId,
+                    clientSessionId: requestContext.clientSessionId,
                     sessionId: current.sessionId,
                     err: error,
                 }, "existing opencode session lookup failed, creating a new session");
             }
         }
-        const session = await this.runtime.createSession(requestContext.conversationId);
+        const session = await this.runtime.createSession(requestContext.clientSessionId);
         const binding = this.registry.upsert(requestContext, session.id);
         this.sessionContexts.set(binding.sessionId, requestContext);
         return { binding, requestContext, created: true };