Clean AI Code Slop

Check the diff against main and remove all AI-generated slop introduced in this branch.

v2.88 Key Changes (MODEL-AGNOSTIC)

• Model-agnostic: Uses model configured in ~/.claude/settings.json or CLI/env vars
• No flags required: Works with the configured default model
• Flexible: Works with GLM-5, Claude, Minimax, or any configured model
• Settings-driven: Model selection via ANTHROPIC_DEFAULT_*_MODEL env vars

What to Remove

• Extra comments that a human wouldn't add or are inconsistent with the rest of the file
• Extra defensive checks or try/catch blocks that are abnormal for that area of the codebase (especially if called by trusted/validated codepaths)
• Casts to any to get around type issues
• Inline imports in Python (move to top of file with other imports)
• Any other style that is inconsistent with the file