[Bug] Sonnet Model Fails to Recognize Basic Null Coalescing/Assertion Operators

Bug Description
How does sonnet not know simple techniques like ?? and !! what the hell is going on guys? why have you destroyed your whole product

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 1.0.109
• Feedback ID: ca6d21ef-232f-4bd1-a886-1aa94465d4d5

Errors

[{"error":"Error: Agent file /Users/pipmcquarrie/.claude/agents/README.md is missing required 'name' in frontmatter\n    at nq5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:9275)\n    at file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:7749\n    at Array.map (<anonymous>)\n    at file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:7679\n    at async Promise.all (index 2)\n    at async wy0.<anonymous> (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3652:1337)\n    at async wy0.parseAsync (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:704:4184)\n    at async km5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3682:1293)\n    at async Sm5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3642:1151)","timestamp":"2025-09-11T13:35:24.988Z"},{"error":"Error: Agent file /Users/pipmcquarrie/.claude/agents/.github/CODE_OF_CONDUCT.md is missing required 'name' in frontmatter\n    at nq5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:9275)\n    at file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:7749\n    at Array.map (<anonymous>)\n    at file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:7679\n    at async Promise.all (index 2)\n    at async wy0.<anonymous> (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3652:1337)\n    at async wy0.parseAsync (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:704:4184)\n    at async km5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3682:1293)\n    at async Sm5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3642:1151)","timestamp":"2025-09-11T13:35:24.997Z"},{"error":"Error: Agent file /Users/pipmcquarrie/.claude/agents/.github/CONTRIBUTING.md is missing required 'name' in frontmatter\n    at nq5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:9275)\n    at file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:7749\n    at Array.map (<anonymous>)\n    at file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:2391:7679\n    at async Promise.all (index 2)\n    at async wy0.<anonymous> (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3652:1337)\n    at async wy0.parseAsync (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:704:4184)\n    at async km5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3682:1293)\n    at async Sm5 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3642:1151)","timestamp":"2025-09-11T13:35:24.998Z"},{"error":"Error: Insufficient permissions for global npm install.\n    at oz0 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:1602:1009)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async IG1 (file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:1612:43)\n    at async file:///Users/pipmcquarrie/.volta/tools/image/packages/@anthropic-ai/claude-code/lib/node_modules/@anthropic-ai/claude-code/cli.js:3563:12430","timestamp":"2025-09-11T13:35:26.333Z"},{"error":"Error: Insufficient permissions for global npm install.\n    at oz0 (file:///Users/pipmcquarrie/.volt

Note: Error logs were truncated.