Incorrect Plan Mode Handling with Unexpected Output Rendering

Bug Description
Submitted a query in plan mode, the response didn't have teh plan mode output wrapping where we're given 3 options. shift-tabbed to auto accept anyway, and saw that the output of the model was outputted in chat in an incorrect manner and no code changes were made. bad code smell!

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 1.0.72
• Feedback ID: 6f8746a5-e4ed-4b1e-94dd-5ec168a29ff0

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: undefined\n    at NX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:1184)\n    at file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:912\n    at Array.map (<anonymous>)\n    at LX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:903)\n    at SjB (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2218:5231)\n    at $R (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:327:19859)\n    at yb (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:42848)\n    at Sb (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38369)\n    at Ij (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38297)\n    at gR (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38151)","timestamp":"2025-08-11T00:47:36.245Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: undefined\n    at NX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:1184)\n    at file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:912\n    at Array.map (<anonymous>)\n    at LX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:903)\n    at SjB (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2218:5231)\n    at $R (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:327:19859)\n    at yb (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:42848)\n    at Sb (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38369)\n    at Ij (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38297)\n    at gR (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38151)","timestamp":"2025-08-11T00:47:36.254Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: undefined\n    at NX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:1184)\n    at file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:912\n    at Array.map (<anonymous>)\n    at LX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:903)\n    at SjB (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2218:5231)\n    at $R (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:327:19859)\n    at yb (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:42848)\n    at Sb (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38369)\n    at Ij (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38297)\n    at gR (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:329:38151)","timestamp":"2025-08-11T00:47:36.536Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: undefined\n    at NX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:1184)\n    at file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:912\n    at Array.map (<anonymous>)\n    at LX (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1858:903)\n    at SjB (file:///Users/danialhasan/.nvm/versions/node/v20.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2218:5231)\n    at $R (file:///Users/

Note: Error logs were truncated.