feat: 新增泳道插件

[DymoneLewis]

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[Copilot]

Pull request overview

This PR introduces a new PoolElements swimlane plugin for @logicflow/extension, built on top of the existing DynamicGroup mechanism. It registers pool and lane node types with dedicated models and views, providing interactive swimlane/pool canvas elements with support for drag-and-drop lane assignment, insert/delete lane interactions, and directional layout (horizontal/vertical).

Changes:

• New PoolElements plugin with PoolModel, LaneModel, PoolView, LaneView, and utility files under packages/extension/src/pool/
• Documentation pages (pool.zh.md / pool.en.md) and a tutorial demo component for the docs site
• Feature example app page and route for interactive development/testing

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
packages/extension/src/pool/index.ts	Core plugin class: registers nodes, manages node-lane mappings, wires event handlers
packages/extension/src/pool/PoolModel.ts	Pool node model: layout logic, lane management, resize coordination
packages/extension/src/pool/LaneModel.ts	Lane node model: child node tracking, pool traversal, text positioning
packages/extension/src/pool/LaneView.ts	Lane view: shape rendering and interactive icons for inserting/deleting lanes
packages/extension/src/pool/PoolView.ts	Pool view: title/content area rendering, default lane creation on mount
packages/extension/src/pool/constant.ts	Shared size constants for pool and lane rendering
packages/extension/src/pool/utils.ts	Boundary helper functions for move/drop constraint logic
packages/extension/src/index.ts	Exports the new pool module
packages/extension/src/dynamic-group/index.ts	Minor whitespace removal (blank line)
packages/core/src/view/shape/Text.tsx	Minor whitespace removal (blank line)
packages/core/src/model/GraphModel.ts	Minor whitespace removal (blank line)
sites/docs/docs/tutorial/extension/pool.zh.md	Chinese documentation for pool plugin
sites/docs/docs/tutorial/extension/pool.en.md	English documentation for pool plugin
sites/docs/src/tutorial/extension/pool/index.tsx	Interactive documentation demo component
sites/docs/src/tutorial/extension/pool/index.module.less	Viewport styles for the demo
examples/feature-examples/src/pages/nodes/custom/pool/index.tsx	Feature example app page with debug tooling
examples/feature-examples/src/pages/nodes/custom/pool/newData.ts	Test graph data for the feature example
examples/feature-examples/src/pages/nodes/custom/pool/data.ts	Empty placeholder data file
examples/feature-examples/src/pages/nodes/custom/rect/index.tsx	Adds allowResize: true to rect example config
examples/feature-examples/src/pages/graph/index.tsx	Comments out unused import
examples/feature-examples/.umirc.ts	Adds route for the new pool example page

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