feat(mind): add chat screen model config dialog

[ucguy4u]

Summary

• Add a Configurations dialog on the chat screen (Model Configs + System Prompt) for max tokens, TopK, TopP, temperature, CPU/GPU, and an optional system-prompt override.
• Persist those settings and pass sampling/accelerator into GGUF generation so local chat uses the chosen runtime knobs.

Test plan

• packages/feature_mind unit/widget tests for config model, prefs, dialog, chat-screen entry, and GGUF sampling forward
• Open Agent Skills chat, tap the settings icon, change a slider, OK, send a message

Made with Cursor

[github-actions]

Plugin Module Size Gate

Policy: modules over 3 MB must be delivered as plugins; plugin modules over 5 MB must document cache management.

Module	Size	Type	Status
packages/feature_mind	2.93 MB	bundled	WARN: 1-3 MB requires PR size justification

[github-actions]

🚀 PR Quick Check Summary

Check	Status	Description
PR Validation	❌ failure	Title format, docs, bundled model guardrail
Code Quality	❌ failure	Analyze, formatting
Core Tests	❌ failure	Core package unit tests
Airo Mind Shell	❌ failure	Mind flavour analyze, tests, entrypoint compile

💡 Note: Full app tests, coverage reports, and security scans run on merge to main.

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