refactor(core): 从基类分离 dom 实现的底栏和间奏点

[apoint123]

让基类和 dom 实现更解耦一些

[Copilot]

Pull request overview

Decouples DOM-specific bottom-line and interlude-dot rendering from the lyric-player base.

Changes:

• Adds abstract component interfaces and factory hooks.
• Moves DOM rendering into dedicated implementations.
• Centralizes lifecycle handling and updates animation behavior.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/core/src/lyric-player/base/bottom-line.ts	Defines the bottom-line interface.
packages/core/src/lyric-player/base/interlude-dots.ts	Defines the interlude-dot interface.
packages/core/src/lyric-player/base/index.ts	Adds factories and shared lifecycle handling.
packages/core/src/lyric-player/dom/bottom-line.ts	Implements the DOM bottom line.
packages/core/src/lyric-player/dom/interlude-dots.ts	Implements and adjusts DOM interlude animation.
packages/core/src/lyric-player/dom/index.ts	Supplies DOM component factories.
packages/core/src/index.ts	Exposes the runtime spring namespace.
.nx/version-plans/version-plan-1786893788472.md	Declares the release increment.

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