feat(sandbox): migrate to standalone Rust proxy and implement stateless WSS gateway with dynamic file sync (#7034)

* feat(sandbox): implement stateless WSS gateway, Rust agent-proxy service, and interactive terminal

- Implement stateless WSS gateway for agent-sandbox connection.
- Migrate WSS proxy to a standalone Rust service.
- Integrate interactive PTY terminal and clean up obsolete APIs.
- Add unit & integration tests for Rust proxy & agent with CI workflow.
- Unify proxy secrets under AGENT_SANDBOX_PROXY_SECRET.
- Implement fine-grained session ticket permissions & enhance proxy log security.

* refactor(sandbox): upgrade agent & proxy to Rust 2024, optimize file operations, and support connection limiting

- Implement dynamic file change sync with debounce and robust connection limiting.
- Upgrade Rust dependencies, split ide agent modules and enhance file access security.
- Optimize Docker build targets, configure default Sealos image, and implement native file operations.
- Support dynamic gateway hostnames, add proxy ping keepalive, and refine terminal resize checks.
- Upgrade to Rust 2024, secure workspace operations, and refine adapter helpers.

* feat(skill): redesign skill detail page with split layout and refine sandbox editor styling

* refactor(sandbox): optimize edit-debug hot-reload and skip S3 pull on cold-start

- Refine edit-debug sandbox hot-reload and auto resume logic.
- Skip S3 pull on cold-start when volume exists and fix OpenSandbox getInfo.

* feat(sandbox): implement cold archive and restore, unify file limits, and relax proxy secret

* style(skill): adjust chatbox and input layout padding for skill detail page

* feat(sandbox): add archive migration API and restore   support for empty or archived workspaces

refactor(sandbox): enhance workspace archiving/restore, zip safety, and websocket stability

* feat(sandbox): migrate archived records across providers, adjust probe timeout and command limits

* feat(skill): add preview empty state, disable sending before sandbox ready, and unify error handling

* refactor(skill): simplify export, fix import encoding, and use default LLM

* feat(sandbox): ensure zip availability and track archiving failures

* feat(sandbox): refactor workspace fs watcher with debouncer, improve terminal styling, and add archive progress tracking

- rust ide agent: Integrate notify-debouncer-full to debounce workspace file system events and broadcast batches with sequential numbers to handle lagged events.
- frontend/sandbox: Remove client-side debounce in favor of backend debouncing, refine workspace file tree refreshing, and adjust terminal background and horizontal padding.
- archive: Introduce onProgress callback for resource archiving and utilize it in initSandboxArchive API to log real-time progress and errors.

* docs(skill): comprehensive user guides for agent skills

* refactor(sandbox): improve TS safety, simplify markdown frontmatter, and support sandboxToolMap info