chore: rename CLI package to @leanspec/cli (Part of #254)

[tikazyq]

Summary

Recover from the failed second publish attempt (run 26144025632). npm rejected the unscoped leanspec name with:

Package name too similar to existing package lean-spec; try renaming your package to '@crawlab/leanspec' and publishing with 'npm publish --access=public' instead

Use the scoped name @leanspec/cli, consistent with the existing @leanspec/{mcp,http-server,cli-{platform}} family on npm. The binary stays named leanspec (Rust [[bin]] name), so user-facing commands (leanspec board, leanspec init, MCP config) are unchanged. Only the install command changes:

# Before (not publishable)
npm install -g leanspec

# After
npm install -g @leanspec/cli

Updated:

• packages/cli/package.json name
• scripts/prepare-publish.ts workspace pkgMap
• README.md Quick Start
• packages/README.md catalog + per-package section + dev command

Not touching the verification scripts (scripts/verify-npm-publish.ts, scripts/verify-npm-packages.mjs) — they still reference the unscoped leanspec for warning checks, but they're non-fatal and pre-date the rename. Follow-up cleanup.

State of partial publish: @leanspec/{cli,mcp,http}-{platform}@0.3.0 are on npm. @leanspec/mcp@0.3.0 and @leanspec/http-server@0.3.0 are on npm. @leanspec/cli@0.3.0 needs this PR + a re-trigger of publish.yml. @leanspec/ui@0.3.0 probably also still pending.

Part of #254.

Test plan

• After merge + workflow re-run: npm view @leanspec/cli version returns 0.3.0
• npm install -g @leanspec/cli && leanspec --help works end-to-end

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR renames the npm CLI package from the unscoped leanspec to the scoped @leanspec/cli to enable publishing (while keeping the installed binary name leanspec unchanged). It updates publishing preparation logic and user-facing docs so installs and examples reference the new scoped package name.

Changes:

• Rename packages/cli package name to @leanspec/cli.
• Update scripts/prepare-publish.ts workspace package map to resolve @leanspec/cli.
• Update root README and packages/README.md install/usage instructions to use @leanspec/cli.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
scripts/prepare-publish.ts	Updates workspace package name mapping to resolve versions for @leanspec/cli.
README.md	Updates Quick Start install/run commands to use @leanspec/cli.
packages/README.md	Updates package catalog/usage instructions for the scoped CLI package name.
packages/cli/package.json	Renames the published package to @leanspec/cli.

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