v1.0.0

crossDSA is a Manifest V3 Chrome extension that surfaces the same or
similar DSA problem from other platforms while you solve on any one of
five sites: LeetCode, GeeksforGeeks, Codeforces, CodeChef, and
TakeUForward (search-only on TUF for now).

Matching

• Content-script engine tokenizes problem titles and statements,
  strips stopwords, stems (Porter), and applies IDF weighting plus
  bigram overlap so matches are content-aware rather than keyword-only.
• Combines title and description similarity into a single confidence
  score, flags exact vs similar, dedupes near-identical titles, and
  respects an adjustable threshold with Lenient/Moderate/Strict presets.
• Results panel groups matches by platform with tabs, difficulty,
  topic tags, and match%; built-in YouTube solution search that builds
  platform-specific queries (contest+index code for Codeforces,
  problem codes for CodeChef, etc.).
• Works around SPA navigation and mutating DOMs via re-injection and a
  floating fallback button.

Extension

• Popup toggles the button, picks search platforms, and exposes
  problem counts per platform and last-results stats.
• Settings persist via chrome.storage (background service worker routes
  storage between popup and content script).

Data & scrapers

• Four Python scrapers (LeetCode GraphQL, GfG practice API,
  Codeforces problemset API, CodeChef list/detail API) write to
  data/ as separate JSON datasets (~10k+ problems indexed).
• Scrapers are resumable: skip IDs already present and checkpoint
  every 50 problems; scrape.py runs one, several, or all interactively
  (CodeChef supports --limit/--pages for quick tests).