v2.1.0

• Rebuilt System Settings with clearer grouped controls, an About panel,
  deployment health visibility, local data export/reset actions, and refreshed
  localized settings copy.
• Added native image generation and image editing for models with image
  input/output metadata, including ordered mixed text/image output blocks,
  image edit attachments, and OPFS-backed display caching.
• Expanded built-in plugin media tools: Agnes and Gemini now present as image
  processing plugins, OpenAI-compatible Images API and OpenAI Responses image
  processing are separate built-ins, and image plugin results are compacted into
  tool details/history so follow-up model messages decide how to reference them.
• Added plugin-level API Base URL and Model ID controls for supported image
  plugins, image count parameters where the upstream API supports them, Agnes
  image-to-image editing, and Agnes video image-to-video support with custom
  video model IDs while preserving the two-step create_video /
  get_video_result workflow.
• Added thinking intensity controls and provider-specific reasoning mapping for
  Gemini and OpenAI-compatible model requests.
• Added Japanese localization across the app, SEO metadata, LobeHub assistant
  locale routing, voice language handling, and the public Skills catalog.
• Hardened hosted deployments with API request proof, stronger shared-store and
  rate-limit checks, service health coverage, safer URL/secret handling, and
  expanded test coverage.
• Fixed Cloudflare Workers preview/deploy commands and kept Worker deploys from
  dropping dashboard-managed variables.
• Refined code block rendering, syntax highlighting, sandboxed HTML preview,
  Mermaid/mind map/SVG rendering behavior, and release automation based on
  matching CHANGELOG.md sections.
• Added a fork-only upstream sync workflow and README guidance for keeping fork
  repositories current with u14app/neo-chat.