fix: isolate concurrent OpenCode chat runs

electron/opencode/manager.ts

@@ -23,6 +23,7 @@ import {
 import { promisify } from 'node:util';
 
 export type OpencodeLifecycleState = 'stopped' | 'starting' | 'running' | 'error';
+export type OpencodeRuntimeGenerationProvenance = 'unknown' | 'starting' | 'fresh' | 'attached';
 
 export interface OpencodeStatus {
   state: OpencodeLifecycleState;
@@ -400,6 +401,7 @@ export class OpencodeManager extends EventEmitter {
   private cancelStartsBeforeSequence = 0;
   private runtimeGeneration = 0;
   private activeRuntimeGeneration: number | null = null;
+  private activeRuntimeGenerationProvenance: OpencodeRuntimeGenerationProvenance = 'unknown';
   private activeStartAttempt: RuntimeStartAttempt | null = null;
   private readonly trackedUnreleasedPorts = new Set<number>();
   private lifecycleBusy = false;
@@ -423,6 +425,18 @@ export class OpencodeManager extends EventEmitter {
     return { ...this.status };
   }
 
+  getRuntimeGeneration(): number {
+    return this.status.state === 'starting' || this.status.state === 'running'
+      ? this.activeRuntimeGeneration ?? 0
+      : 0;
+  }
+
+  getRuntimeGenerationProvenance(): OpencodeRuntimeGenerationProvenance {
+    return this.status.state === 'starting' || this.status.state === 'running'
+      ? this.activeRuntimeGenerationProvenance
+      : 'unknown';
+  }
+
   getManagedConfigDir(): string | null {
     const userDataDir = this.options.userDataDir?.trim();
     return userDataDir ? getManagedOpencodeConfigDir(userDataDir) : null;
@@ -518,6 +532,7 @@ export class OpencodeManager extends EventEmitter {
       }
       if (this.activeRuntimeGeneration === generation) {
         this.activeRuntimeGeneration = null;
+        this.activeRuntimeGenerationProvenance = 'unknown';
       }
       this.setStatus({ state: 'stopped', port: this.options.port });
     } catch (error) {
@@ -685,6 +700,7 @@ export class OpencodeManager extends EventEmitter {
         if (!listeningPort) return;
 
         finish(() => {
+          this.activeRuntimeGenerationProvenance = 'fresh';
           this.setStatus({
             state: 'running',
             port: listeningPort,
@@ -738,6 +754,7 @@ export class OpencodeManager extends EventEmitter {
                     url: existingServer.url,
                   },
                 );
+                this.activeRuntimeGenerationProvenance = 'attached';
                 this.setStatus(existingServer);
                 resolve(this.getStatus());
               });
@@ -805,6 +822,7 @@ export class OpencodeManager extends EventEmitter {
       controller: new AbortController(),
     };
     this.activeRuntimeGeneration = attempt.generation;
+    this.activeRuntimeGenerationProvenance = 'starting';
     this.activeStartAttempt = attempt;
     return attempt;
   }
@@ -997,6 +1015,7 @@ export class OpencodeManager extends EventEmitter {
       this.recordPortReleaseOutcome(port, true, released);
       if (released) {
         this.activeRuntimeGeneration = null;
+        this.activeRuntimeGenerationProvenance = 'unknown';
         this.setStatus({
           state: 'stopped',
           port: this.options.port,