Resolve npm audit vulnerabilities and linting issues

[Copilot]

Fixes 9 security vulnerabilities and eliminates all linting errors/warnings.

Security Updates

• Updated vulnerable dependencies via npm audit fix:
  • @babel/runtime 7.26.7 → 7.28.6 (inefficient RegExp)
  • axios (DoS vulnerabilities)
  • react-router / react-router-dom (CSRF, XSS)
  • vite (file serving bypass)
  • lodash, js-yaml, brace-expansion, diff

Linting Fixes

• PlaceSitemapPage.tsx: Removed @ts-nocheck, added type assertions for recursive tree navigation:

  // Before: @ts-nocheck suppressing errors
  <ListComponents tree={value} level={level + 1} />
  
  // After: Proper typing
  <ListComponents 
    tree={value as Record<string, unknown> | Webcam} 
    level={(level + 1) as 0 | 1 | 2 | 3 | 4} 
  />

• Removed invalid sonarjs/cognitive-complexity rule from utils/collect.ts
• Added descriptions to @ts-expect-error directives in youtubeLint.ts
• Cleaned up 25 unused eslint-disable directives across 9 files
• Added React version detection to eslint config

Warning

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I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node scripts/postinstall.js (http block)

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• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
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[Copilot]

Pull request overview

This PR addresses npm security vulnerabilities and eliminates linting issues by updating dependencies, removing lodash, fixing TypeScript errors, and refactoring React components to follow best practices.

Changes:

• Updated 9 vulnerable dependencies including axios, react-router, vite, and @babel/runtime
• Removed lodash dependency and replaced with custom implementations (setNestedValue, chunkArray)
• Fixed TypeScript/linting issues by removing @ts-nocheck directives, adding type assertions, and wrapping document.title updates in useEffect hooks
• Updated GitHub Actions workflows and removed unused eslint-disable directives
• Modernized tsconfig.json (module: "esnext", moduleResolution: "bundler")

Reviewed changes

Copilot reviewed 18 out of 21 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
package.json	Updated vulnerable dependencies, removed lodash, added "start" script
package-lock.json	Lockfile updates for dependency versions
tsconfig.json	Changed module system to esnext with bundler resolution
eslint.config.mjs	Restructured config format, added React version detection
src/components/pages/PlaceSitemapPage.tsx	Removed @ts-nocheck, added custom setNestedValue to replace lodash.set
src/components/pages/WebcamsSitemapPage.tsx	Refactored pagination with safeCurrentPage derived state
src/components/pages/WebcamPage.tsx	Moved document.title to useEffect, simplified webcam lookup
src/components/pages/ListPage.tsx	Added custom chunkArray to replace lodash.chunk
src/components/pages/MapView.tsx	Moved document.title to useEffect
.github/workflows/*.yml	Updated actions versions to v6, removed Node 18 from test matrix
utils/lint/*.ts	Removed unnecessary eslint-disable comments, added @ts-expect-error descriptions

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