fix(codex-link): isolate model transfers and widen local connection capacity

apps/desktop/electron/codex-link.ts

@@ -218,10 +218,12 @@ export function createCodexLink(deps: CodexLinkDeps): CodexLink {
     }
   }
 
-  // Off: take back everything we put there. Each step is independent — a
-  // failure in one must not leave the others in place.
+  // Remove the owned URL before stopping its server. A failed config write
+  // must leave the working bridge alive so Codex is not stranded offline.
   const tearDown = async (config: ReturnType<typeof readCodexConfig>): Promise<BridgeProbe> => {
-    removeOurLine(config.text)
+    if (!removeOurLine(config.text)) {
+      return probe()
+    }
 
     try {
       await deps.clearAutostart()