Revert "Preserve OpenCode session across command completion, control SessionS…" (#14943)

This reverts commit 1da1bdc01c.

src/main/runtime/orca-runtime.ts

@@ -10325,7 +10325,7 @@ export class OrcaRuntimeService {
         this.recordTerminalSideEffectFact(ptyId, { kind: 'bell' })
         return
       case 'command-finished':
-        this.retirePtyAgentLaunchAuthorityAfterCommandFinished(ptyId)
+        this.retirePtyAgentLaunchAuthority(ptyId)
         this.recordTerminalSideEffectFact(ptyId, {
           kind: 'command-finished',
           exitCode: fact.exitCode
@@ -10614,7 +10614,7 @@ export class OrcaRuntimeService {
           this.confirmPtyAgentExit(ptyId)
         },
         onCommandFinished: (exitCode: number | null) => {
-          this.retirePtyAgentLaunchAuthorityAfterCommandFinished(ptyId)
+          this.retirePtyAgentLaunchAuthority(ptyId)
           this.recordTerminalSideEffectFact(ptyId, { kind: 'command-finished', exitCode })
         },
         onBell: () => {
@@ -12742,36 +12742,6 @@ export class OrcaRuntimeService {
     }
   }
 
-  private retirePtyAgentLaunchAuthorityAfterCommandFinished(ptyId: string): void {
-    const pty = this.ptysById.get(ptyId)
-    if (pty?.launchAgent !== 'opencode') {
-      this.retirePtyAgentLaunchAuthority(ptyId)
-      return
-    }
-    const titleObservedAt = pty.lastOscTitleAt ?? null
-    const foregroundRead = this.readPtyForegroundProcessFromController(ptyId, titleObservedAt ?? 0)
-    if (!foregroundRead) {
-      this.retirePtyAgentLaunchAuthority(ptyId)
-      return
-    }
-    const incarnationId = pty.incarnationId
-    void foregroundRead.then((result) => {
-      const current = this.ptysById.get(ptyId)
-      if (
-        current !== pty ||
-        current.incarnationId !== incarnationId ||
-        current.lastOscTitleAt !== titleObservedAt ||
-        result.controller !== this.ptyController
-      ) {
-        return
-      }
-      if (result.available && recognizeAgentProcess(result.process)?.agent === 'opencode') {
-        return
-      }
-      this.retirePtyAgentLaunchAuthority(ptyId)
-    })
-  }
-
   async resolveTerminalCwd(handle: string): Promise<string | null> {
     const ptyId = this.resolveLeafForHandle(handle)?.ptyId
     if (!ptyId) {