aisman

Database Changes:
- Added SettingGroup table: Id, Name, IsTab, ParentId, Render
- Added DataType table: Id, Name, AliasForId (aliases like "radio" → "bool")
- Modified Setting table: added SubKey, ParentId, IsPerUser; replaced Internal with GroupId; changed DataType to DataTypeId

Features:
- Dynamic tabs/groups render in alphabetical order
- Groups can be tabs (IsTab=true) or sub-groups; Render=false marks hard-coded tabs that can receive settings
- Child settings disabled when parent checkbox unchecked
- SubKey enables one setting key with dynamic values (e.g., agent-specific paths)
- Hard-coded tabs use empty divs with data-opt-group (negative = no title)

AI Tool Instructions Page:
- Agent dropdown combines defaults (GitHub Copilot, RooCode, KiloCode, Claude, etc.) with user-added agents
- Shows file path from project root above editor with "Browse..." button
- System knows default rule file locations per tool; creates file if missing on save
- Path changes persist to settings

Implementation:
- Update rendering for new hierarchy
- Support parent/child settings
- Add data type aliases for custom controls (file picker, radio, etc.)
- Sort mixed hard-coded/dynamic tabs