Release v0.16.4

Changes since v0.15.1

• chore(workflows): enhance release workflow for accurate tag fetching (63288bc)
• refactor(ui): refactor dark mode ui (79bc3f8)
• refactor(prompts): remove obsolete and deprecated prompt entries (bd4c23b)
• refactor(storage): update default disabled sites and improve code style (b652584)
• fix(ui): remove redundant title attribute from floating action button (29b21f9)
• +kimi网站支持 (c5ac099)
• 控制旧版悬浮按钮不展示 (f5a0c27)
• feat(ui): add draggable floating chat copilot button (af70f33)
• refactor(engine): rename built-in rules engine to built-in optimization engine (df07045)
• chore(ci): comment out release notes generation in workflow and remove docs button in popup (9fdefd6)
• feat(ui): optimize textarea styles and update content display in dialogs (42b5c34)