[Feature Request] Add notification/popup for sub-agent model configuration mismatch

Bug Description
You guys should have a popup regarding using sub agents model. I assume agents were using teh same model I was and this isnt accurate so I end up using up tokens uncessary faster than it should have been used due to using sonnet models. This would obviously eat up way more tokens due to a more token usage model,.You should make a pop up of some sort that addresses this for users that are not aware that you have to manually set for the sub agents to be the same model that you are currently using.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.0.69
• Feedback ID: bba2758e-2611-4ac5-b0ef-1712540437f3

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/jwin/.local/share/claude/versions/2.0.69 (expected in multi-process scenarios)\n    at j8R (/$bunfs/root/claude:2242:2155)\n    at H_A (/$bunfs/root/claude:2242:1875)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T13:51:47.042Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:500)\n    at s6 (/$bunfs/root/claude:11:8378)\n    at readFileSync (/$bunfs/root/claude:12:465)\n    at S9B (/$bunfs/root/claude:4326:20251)\n    at call (/$bunfs/root/claude:914:846)\n    at call (/$bunfs/root/claude:910:6075)\n    at <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:14:01.275Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:500)\n    at s6 (/$bunfs/root/claude:11:8378)\n    at readFileSync (/$bunfs/root/claude:12:465)\n    at S9B (/$bunfs/root/claude:4326:20251)\n    at call (/$bunfs/root/claude:914:846)\n    at call (/$bunfs/root/claude:910:6075)\n    at <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:14:01.278Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:500)\n    at s6 (/$bunfs/root/claude:11:8378)\n    at readFileSync (/$bunfs/root/claude:12:465)\n    at S9B (/$bunfs/root/claude:4326:20251)\n    at call (/$bunfs/root/claude:914:846)\n    at call (/$bunfs/root/claude:910:6075)\n    at <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:14:01.280Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:500)\n    at s6 (/$bunfs/root/claude:11:8378)\n    at readFileSync (/$bunfs/root/claude:12:465)\n    at S9B (/$bunfs/root/claude:4326:20251)\n    at call (/$bunfs/root/claude:914:846)\n    at call (/$bunfs/root/claude:910:6075)\n    at <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:14:01.282Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:500)\n    at s6 (/$bunfs/root/claude:11:8378)\n    at readFileSync (/$bunfs/root/claude:12:465)\n    at S9B (/$bunfs/root/claude:4326:20251)\n    at call (/$bunfs/root/claude:914:846)\n    at call (/$bunfs/root/claude:910:6075)\n    at <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:14:01.284Z"},{"error":"Error: EISDIR: illegal operation on a directory, read\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:500)\n    at s6 (/$bunfs/root/claude:11:8378)\n    at readFileSync (/$bunfs/root/claude:12:465)\n    at S9B (/$bunfs/root/claude:4326:20251)\n    at call (/$bunfs/root/claude:914:846)\n    at call (/$bunfs/root/claude:910:6075)\n    at <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:14:01.286Z"},{"error":"MaxFileReadTokenExceededError: File content (26021 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at y9B (/$bunfs/root/claude:905:10587)\n    at async call (/$bunfs/root/claude:914:906)\n    at async <anonymous> (/$bunfs/root/claude:3133:1512)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-12-15T14:23:41.626Z"}]