feat(executor): add HttpRequest support across executors for better http request handling

Fixed: #607

fix: remove duplicate CountTokens stub

feat: Add Amp CLI integration with comprehensive documentation

feat(translator): add built-in translator registry and helpers

Add support for dynamic model providers

refactor(auth): replace `TokenRecord` with `coreauth.Auth` and migrate `TokenStore` to `coreauth.Store`

rebuild branch

remove all

refactor(auth): replace FileStore with FileTokenStore for unified token persistence

chore(docs): add and refine package-level comments across modules

feat: introduce custom provider example and remove redundant debug logs