Audit project health and refresh docs

[SPerekrestova]

Summary

• Refreshes README install/config guidance so npm and MCP examples consistently use @sperekrestova/interactive-leetcode-mcp, and adds a clean-directory npm smoke-test recipe that explicitly distinguishes CLI install checks from stdio MCP validation.
• Brings the README tool inventory back in sync with the registered MCP tools (get_started, session/hint tools, runner tools, solution tools, and current user-history tool names).
• Makes project health checks runnable with npm run lint by treating .cjs scripts as CommonJS in ESLint, removes two unused dev-only packages plus stale inferred schema type exports.

Link to Devin session: https://app.devin.ai/sessions/c77c9ce4cbbd45178be1fd19f2e2a5ce
Requested by: @SPerekrestova

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[coderabbitai]

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📒 Files selected for processing (1)

• README.md

✅ Files skipped from review due to trivial changes (1)

• README.md

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📝 Walkthrough

Walkthrough

The PR expands README documentation with CLI smoke test commands, an @latest MCP config update, a full tool catalog (session, runner, solution, user tools), and a rewritten learning mode flow. It also fixes ESLint globals for Node/CJS environments, adds a lint script, removes two unused dev dependencies, and drops the SubmitResponse/CheckResponse exported type aliases.

Changes

README Documentation

Layer / File(s)	Summary
Installation verification and MCP config README.md	Adds --version/--help smoke commands after global install, introduces a Fresh Environment Smoke Test section, and updates Claude Desktop args to use the scoped package at @latest.
Tool catalog and learning mode flow README.md	Documents get_started, adds Session/Learning/Local Runner/Solution tool sections with parameters and prerequisites, replaces get_user_submissions with six newer submission/status/progress tools, and rewrites the How to Use Learning Mode numbered steps.

ESLint Config and Code Cleanup

Layer / File(s)	Summary
ESLint Node/CJS config and package.json cleanup eslint.config.js, package.json	Switches base globals from globals.browser to globals.node, adds a **/*.cjs override with sourceType: "commonjs" and @typescript-eslint/no-require-imports disabled, adds a lint npm script, and removes esbuild and eslint-plugin-prettier from devDependencies.
Remove unused Zod type aliases src/leetcode/schemas.ts	Drops the exported SubmitResponse and CheckResponse type aliases that were inferred from the corresponding Zod schemas.

✨ Finishing Touches

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch devin/1781971883-project-health-audit

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@README.md`:
- Around line 69-71: The documentation in the smoke test section overstates the
validation coverage by claiming that the commands "start the MCP server
entrypoint," when in reality --version and --help flags only execute CLI
commands without establishing server startup or stdio handshake. Revise the
sentence to accurately reflect what actually occurs: state that the commands
confirm Node can install the package and expose the CLI binary, then add
guidance that for actual MCP server validation, an integration test with stdio
handshake should be implemented instead.

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Fix all unresolved CodeRabbit comments on this PR:

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• Create a new PR with the fixes

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ℹ️ Review info

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Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 45c203a6-72ca-47fa-bd7e-7bbdeef5b0b8

📥 Commits

Reviewing files that changed from the base of the PR and between 4ceefe4 and e88c6b8.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (4)

• README.md
• eslint.config.js
• package.json
• src/leetcode/schemas.ts

💤 Files with no reviewable changes (1)

• src/leetcode/schemas.ts