feat: Implement Instant Mouse-Following Tooltip

[RainYangty]

Summary

This pull request introduces a custom instant, mouse-following tooltip feature for macOS (AppKit) views. This implementation uses an NSViewRepresentable bridge to AppKit, allowing us to display a custom NSWindow immediately upon mouse-over, and have it track the mouse position.

The new functionality replaces the standard system tooltip functionality and is used across several key components to provide a more responsive and customizable user experience.

Key Changes

1. New File: MeoAsstMac/Views/InstantTooltip.swift:

   • Adds an AppKitTooltipModifier and a corresponding TooltipView (NSViewRepresentable).
   • Implements a custom Coordinator to handle NSTrackingArea events (mouseEntered, mouseMoved, mouseExited).
   • Creates and manages a borderless NSWindow to host the SwiftUI tooltip content, enabling custom styling (e.g., padding, rounded background, shadows).
   • Includes logic to ensure the tooltip window stays within the screen boundaries.
   • Adds a 10-second auto-hide timer for the tooltip.
   • Provides the easy-to-use .instantTooltip<TooltipContent: View>(@ViewBuilder content: () -> TooltipContent) View extension.

2. Integration of .instantTooltip:

   • Replaces the standard .help() modifier with the new .instantTooltip in various files where applicable, including: CopilotContent.swift, CopilotDetail.swift, TaskDetail.swift, TasksContent.swift, UtilityContent.swift, and LogView.swift.
   • This ensures a consistent and enhanced visual feedback experience for buttons and controls across the application.

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Files Affected

• MeoAsstMac/Navigation/CopilotContent.swift
• MeoAsstMac/Navigation/CopilotDetail.swift
• MeoAsstMac/Navigation/TaskDetail.swift
• MeoAsstMac/Navigation/TasksContent.swift
• MeoAsstMac/Navigation/UtilityContent.swift
• MeoAsstMac/Views/InstantTooltip.swift (New Feature)
• MeoAsstMac/Views/LogView.swift

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摘要

本次拉取请求（PR）引入了一项自定义的即时、鼠标跟随工具提示功能，专用于 macOS (AppKit) 视图。此实现通过一个 NSViewRepresentable 桥接到 AppKit，使我们能够在鼠标悬停时立即显示一个自定义的 NSWindow，并让它实时跟随鼠标的位置。

这项新功能取代了标准的系统工具提示功能，并已在多个关键组件中投入使用，以提供更具响应性和可定制的用户体验。

主要更改

1. 新增文件：MeoAsstMac/Views/InstantTooltip.swift:

   • 添加了 AppKitTooltipModifier 和对应的 TooltipView (NSViewRepresentable)。
   • 实现了一个自定义的 Coordinator 来处理 NSTrackingArea 事件（mouseEntered、mouseMoved、mouseExited）。
   • 创建并管理一个无边框的 NSWindow 来承载 SwiftUI 工具提示内容，从而实现自定义样式（例如内边距、圆角背景、阴影）。
   • 包含了确保工具提示窗口停留在屏幕边界内的逻辑。
   • 新增了一个 10 秒自动隐藏计时器。
   • 提供了易于使用的 .instantTooltip<TooltipContent: View>(@ViewBuilder content: () -> TooltipContent) View 扩展。

2. 集成 .instantTooltip:

   • 在适用范围，将标准 .help() 修饰符替换为新的 .instantTooltip，涉及文件包括：CopilotContent.swift、CopilotDetail.swift、TaskDetail.swift、TasksContent.swift、UtilityContent.swift 和 LogView.swift。
   • 这确保了应用程序中按钮和控件提供统一且增强的视觉反馈体验。

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受影响的文件

• MeoAsstMac/Navigation/CopilotContent.swift
• MeoAsstMac/Navigation/CopilotDetail.swift
• MeoAsstMac/Navigation/TaskDetail.swift
• MeoAsstMac/Navigation/TasksContent.swift
• MeoAsstMac/Navigation/UtilityContent.swift
• MeoAsstMac/Views/InstantTooltip.swift (新功能)
• MeoAsstMac/Views/LogView.swift

[RainYangty]

原来那个conflict太多了，刚好把pr拆分一下

[RainYangty]

#57