Feature: Persist Region/Profile Selection to Config

[yimsk]

Persist Selection to Config 💾

Save user's region and profile selection to config file for restoration on next startup.

Current Behavior

• Region: detected from profile's default region or environment
• Profile: SDK default on startup
• No persistence between sessions

Proposed Behavior

# ~/.config/claws/config.yaml
regions:
  - us-east-1
  - ap-northeast-1
profile: production  # or profiles: [...] after #49

Features

1. Auto-save: Save selection when changed via R/P keys
2. Restore on startup: Load saved selection if config exists
3. CLI override: claws -r us-west-2 overrides saved config
4. Clear config: Command to reset to defaults

Implementation Tasks

• Define config file schema (YAML)
• Config read/write functions
• Save on RegionChangedMsg / ProfileChangedMsg
• Load on app startup (respect CLI flags priority)
• Handle migration if schema changes

Related

• Feature: Multi-Region Selection #33 Multi-Region Selection
• Feature: Multi-Profile Selection #49 Multi-Profile Selection