feat: add initial ci.yml workflow

[priley86]

Pull Request: Add CI Workflow and Fix Build/Lint Issues

Summary

This PR introduces a comprehensive CI/CD pipeline for the monorepo and fixes various build/lint issues discovered during CI implementation.

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CI Workflow (ci.yml)

New GitHub Actions Workflow Features:

• Smart Project Discovery: Automatically detects all projects in the monorepo by scanning for package.json (Node.js), poetry.lock (Poetry), uv.lock (uv), and requirements.txt (pip)
• Changed File Filtering: Only runs CI on projects that have changes in the current PR/push, reducing unnecessary build time
• npm Workspace Detection: Automatically excludes workspace member packages (sub-packages in monorepos) from individual builds since they're built by their parent workspace
• CI Workflow Change Detection: Re-runs all projects if .github/workflows/ci.yml itself is modified
• Matrix Strategy: Runs builds in parallel across all detected projects using fail-fast: false
• Environment Setup: Automatically copies .env.example to .env for projects that require environment configuration
• Graceful Script Handling: Checks if build and lint scripts exist before running them

Supported Project Types:

Type	Detection	Tool Versions
Node.js	package.json (excluding node_modules)	Node.js 20
Poetry	poetry.lock	Python 3.12, Poetry latest
uv	uv.lock	Python 3.12, uv latest
pip	requirements.txt (no lock files)	Python 3.12 (or .python-version)

Summary Job: A ci-success job runs after all builds complete to provide a single status check for branch protection rules.

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Build/Lint Fixes

TypeScript Frontend Projects

• Fixed Vite config to use ES module syntax: fileURLToPath(new URL("./src", import.meta.url)) instead of path.resolve(__dirname)
• Added @types/node to devDependencies
• Added "types": ["node"] to tsconfig.node.json
• Removed unused loop variables (e.g., (m, i) → (m))
• Added explicit types to function parameters (e.g., fetchWithCredentials(url: string, options: RequestInit = {}))
• Fixed malformed type imports (import { Message, type } → import type { Message })
• Relaxed ESLint rules to warnings: @typescript-eslint/no-explicit-any, react-refresh/only-export-components

Python Projects

• Added poetry.toml, uv.toml, and pip.conf files to configure PyPI as the package index
• Fixed unused exception variables: except Exception as e: → except Exception:
• Updated auth0-fastapi dependency from >=0.3.0 to >=1.0.0b1

MCP Server Projects

• Added missing inputSchema to tool definitions in hono-mcp-js
• Fixed tsconfig.json in nextjs-mcp-js (removed unnecessary outDir/rootDir)
• Added placeholder values to .env.example files

Missing Dependencies

• Added @auth0/ai and @auth0/ai-langchain to authorization-for-rag/langchain-next-js
• Added @tsconfig/recommended to workspace member packages in langchain-react-spa-js

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Files Changed

• New: .github/workflows/ci.yml - CI workflow
• New: Multiple poetry.toml, uv.toml, pip.conf files for Python package index configuration
• Modified: ~20+ frontend projects with TypeScript/ESLint fixes
• Modified: Several Python projects with lint fixes
• Modified: Multiple .env.example files with placeholder values for CI build purposes