refactor: upgrade to TypeScript 6 with source-first monorepo resolution

[gaomeng1900]

What

Upgrade to TypeScript 6.0.2 and switch every internal package to source-first resolution — main/types/exports point to .ts source in dev; a prepublishOnly/postpublish script pair swaps them to dist for npm publish. This eliminates per-package composite/references/paths, all tsconfig.dts.json files, and the Vite alias workarounds.

Type

• Breaking change
• Bug fix
• Feature / Improvement
• Refactor / Chores
• Documentation / Website / Demo / Testing

Testing

• Tested in modern browsers
• No console errors
• Types/doc added

Requirements / 要求

• I have read and follow the Code of Conduct and Contributing Guide . / 我已阅读并遵守行为准则。
• This PR is NOT generated by a bot or AI agent acting autonomously. I have authored or meaningfully reviewed every change. / 此 PR 不是由 bot 或 AI 自主生成的，我已亲自编写或充分审查了每一处变更。

[Copilot]

Pull request overview

Upgrades the repo to TypeScript 6.0.2 and shifts workspace packages to “source-first” resolution (dev entrypoints point at .ts source), with publish-time scripts to swap manifests back to dist artifacts for npm publishing. This removes prior per-package TS project references/path mappings and Vite alias workarounds.

Changes:

• Add a unified root tsconfig.typecheck.json and root npm run typecheck that checks libs + extension.
• Convert internal packages to source-first main/types/exports with publishConfig + prepare-publish/restore-dev scripts for publish lifecycle.
• Simplify package tsconfigs and Vite configs by removing monorepo alias/path/reference workarounds; update TypeScript version to ^6.0.2.

Reviewed changes

Copilot reviewed 32 out of 35 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tsconfig.typecheck.json	New unified typecheck project for libs/website packages.
tsconfig.json	Removes root project references tsconfig previously used for IDE.
tsconfig.base.json	Updates shared compiler options for TS6 + bundler-mode assumptions.
scripts/prepare-publish.js	New script to swap dev entrypoints → publish entrypoints and copy LICENSE/README as needed.
scripts/restore-dev.js	New script to restore dev entrypoints post-publish and clean up copied files.
packages/website/vite.config.js	Removes monorepo package alias overrides; keeps @ self-alias.
packages/website/tsconfig.json	Removes references/paths workaround; keeps only @/* mapping.
packages/website/package.json	Removes per-workspace typecheck script (now handled at root).
packages/ui/vite.config.js	Switches dts generation away from tsconfig.dts.json to inline compiler options.
packages/ui/tsconfig.json	Simplifies tsconfig (drops redundant emit/outDir/baseUrl settings).
packages/ui/tsconfig.dts.json	Removes dts-specific tsconfig workaround.
packages/ui/package.json	Source-first entrypoints + publishConfig; use shared publish swap scripts.
packages/page-controller/vite.config.js	Switches dts generation to inline compiler options.
packages/page-controller/tsconfig.json	Simplifies tsconfig (drops redundant emit/outDir/baseUrl settings).
packages/page-controller/tsconfig.dts.json	Removes dts-specific tsconfig workaround.
packages/page-controller/src/dom/dom_tree/index.d.ts	Adds typings for JS dom_tree entrypoint.
packages/page-controller/package.json	Source-first entrypoints + publishConfig; use shared publish swap scripts.
packages/page-agent/vite.iife.config.js	Removes monorepo alias overrides for IIFE demo build.
packages/page-agent/vite.config.js	Switches dts generation to inline compiler options.
packages/page-agent/tsconfig.json	Simplifies tsconfig (drops references/paths workarounds).
packages/page-agent/tsconfig.dts.json	Removes dts-specific tsconfig workaround.
packages/page-agent/package.json	Source-first entrypoints + publishConfig; use shared publish swap scripts.
packages/llms/vite.config.js	Switches dts generation to inline compiler options.
packages/llms/tsconfig.json	Simplifies tsconfig (drops redundant emit/outDir/baseUrl settings).
packages/llms/tsconfig.dts.json	Removes dts-specific tsconfig workaround.
packages/llms/package.json	Source-first entrypoints + publishConfig; use shared publish swap scripts.
packages/extension/tsconfig.json	Simplifies extension tsconfig; adjusts types and @/* mapping.
packages/extension/src/agent/TabsController.ts	Refines port field to use undefined instead of null.
packages/core/vite.config.js	Switches dts generation to inline compiler options.
packages/core/tsconfig.json	Simplifies tsconfig (drops references/paths workarounds).
packages/core/tsconfig.dts.json	Removes dts-specific tsconfig workaround.
packages/core/package.json	Source-first entrypoints + publishConfig; use shared publish swap scripts.
package.json	Adds root typecheck command; upgrades TypeScript to ^6.0.2; expands cleanup.
package-lock.json	Locks TypeScript to 6.0.2.
AGENTS.md	Updates command description to reflect current lint behavior.

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