[Bug] OpusPlan model fails to switch back to Opus after plan generation

Bug Description
the opusplan model should switch back to Opus whenever I trigger it making a plan. As far as I can tell, after my last prompt, it continued planning in Sonnet

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.77
• Feedback ID: fa5bfb1d-6fb6-4fbf-a972-4ed254af5a01

Errors

[{"error":"Error: Request was aborted.\n    at FWT (/$bunfs/root/src/entrypoints/cli.js:1189:68515)\n    at next (native:1:11)\n    at l59 (/$bunfs/root/src/entrypoints/cli.js:6434:6962)\n    at next (native:1:11)\n    at r59 (/$bunfs/root/src/entrypoints/cli.js:6439:9173)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T01:34:40.744Z"},{"error":"Error: Request was aborted.\n    at FWT (/$bunfs/root/src/entrypoints/cli.js:1189:68515)\n    at next (native:1:11)\n    at l59 (/$bunfs/root/src/entrypoints/cli.js:6434:6962)\n    at next (native:1:11)\n    at r59 (/$bunfs/root/src/entrypoints/cli.js:6439:9173)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T01:35:03.981Z"},{"error":"Error: Request was aborted.\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:448:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T13:48:27.913Z"},{"error":"McpToolCallError: MCP error -32602: Input validation error: Invalid arguments for tool resolve-library-id: [\n  {\n    \"expected\": \"string\",\n    \"code\": \"invalid_type\",\n    \"path\": [\n      \"query\"\n    ],\n    \"message\": \"Invalid input: expected string, received undefined\"\n  }\n]\n    at y59 (/$bunfs/root/src/entrypoints/cli.js:6401:26864)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T13:57:18.188Z"},{"error":"McpToolCallError: MCP error -32602: Input validation error: Invalid arguments for tool resolve-library-id: [\n  {\n    \"expected\": \"string\",\n    \"code\": \"invalid_type\",\n    \"path\": [\n      \"libraryName\"\n    ],\n    \"message\": \"Invalid input: expected string, received undefined\"\n  }\n]\n    at y59 (/$bunfs/root/src/entrypoints/cli.js:6401:26864)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T13:57:24.080Z"},{"error":"AxiosError: Request failed with status code 404\n    at sI (/$bunfs/root/src/entrypoints/cli.js:74:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:79:12762)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:81:2467)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T17:25:26.759Z"},{"error":"Error: Request was aborted.\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:448:3940)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T17:25:51.710Z"},{"error":"Error: File does not exist. Note: your current working directory is /Users/tony/Code/Intake.\n    at call (/$bunfs/root/src/entrypoints/cli.js:1526:6510)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T18:56:15.070Z"},{"error":"Error: File does not exist. Note: your current working directory is /Users/tony/Code/Intake.\n    at call (/$bunfs/root/src/entrypoints/cli.js:1526:6510)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-18T18:56:15.466Z"}]