fix(tui): fail fast on invalid session startup (#23837)

packages/opencode/src/cli/cmd/tui/thread.ts

@@ -16,6 +16,7 @@ import { win32DisableProcessedInput, win32InstallCtrlCGuard } from "./win32"
 import { writeHeapSnapshot } from "v8"
 import { TuiConfig } from "./config/tui"
 import { OPENCODE_PROCESS_ROLE, OPENCODE_RUN_ID, ensureRunID, sanitizedProcessEnv } from "@/util/opencode-process"
+import { validateSession } from "./validate-session"
 
 declare global {
   const OPENCODE_WORKER_PATH: string
@@ -202,6 +203,19 @@ export const TuiThreadCommand = cmd({
             events: createEventSource(client),
           }
 
+      try {
+        await validateSession({
+          url: transport.url,
+          sessionID: args.session,
+          directory: cwd,
+          fetch: transport.fetch,
+        })
+      } catch (error) {
+        UI.error(errorMessage(error))
+        process.exitCode = 1
+        return
+      }
+
       setTimeout(() => {
         client.call("checkUpgrade", { directory: cwd }).catch(() => {})
       }, 1000).unref?.()