refactor: translate codebase comments, error messages, and logs into English

[IllusionOfControl]

refactor: translate codebase comments, error messages, and logs into English

🎯 Problem

The codebase contained widespread Chinese comments, docstrings, console logs, and error messages across all core Go packages (internal/aistudio, internal/api, internal/camoufoxnative, internal/chromeauth, internal/app, internal/config, internal/setup).

This created friction for international contributors, reduced readability in non-Chinese development environments, and resulted in inconsistent console log output formats between system logs and application errors.

🛠️ Changes

• internal/aistudio/:
  • Translated all package, type, method, and function docstrings to idiomatic English adhering to Go conventions (// SymbolName ...).
  • Standardized sentinel error messages (ErrInvalidArgument, ErrModelNotFound, ErrNoEligibleAccount, ErrAccountNotFound, ErrAccountLeased, ErrResourceNotFound) and dynamic error wrappers.
  • Converted quota cooldown kinds (minute_quota, daily_quota) and reason messages to English.
  • Preserved protocol invariants, JSON serialization structures, and test requirements (such as substring checks for "const" in JSON schema normalization).
• internal/api/:
  • Translated route handlers, middleware, request validation errors, and protocol compatibility layers (OpenAI, Gemini, Anthropic, Live WebSockets, Files, Media).
• internal/camoufoxnative/:
  • Translated browser lifecycle logs, WebDriver BiDi communication errors, DOM helper messages, and isolation routines.
• internal/chromeauth/:
  • Translated App-Bound Encryption (ABE) routines, Windows DPAPI / NCrypt decryptors, OAuth token multi-login protocol handling, and C helper (abe_helper.c).
• internal/app/, internal/config/, internal/setup/, internal/webui/:
  • Translated runtime orchestration logs, admin event streams, configuration validation errors, and setup wizard prompts.
• Configuration & Repo Metadata:
  • Translated comments in .env.example and .gitignore.

✅ Verification / Testing

• Verified that 0 Chinese characters ([\u4e00-\u9fff]) remain across all Go and C source files in the repository.
• Ran go test ./... — all unit and compatibility test suites pass cleanly.
• Ran go build ./... — service compiles without warnings or errors.