A puzzle-style Git and GitHub orientation. Solve questions in the web UI, generate a submission token, and submit your answers via Pull Request. CI validates your PR automatically.

• Question navigation: the Q buttons at the top switch questions.
• Media: some questions include a video (Watch video) or image (View image) link shown at the top. They open in a new tab.
• Hint Mode: click the small rotating pyramid at the bottom-right of the terminal area to toggle Hint Mode. In Hint Mode, the panel shows a typewriter reveal for Hint and Format. Some questions may provide a Copy value.
• Editing inputs: You can edit your GitHub username and answer any time using the EDIT buttons.
• Generate token: After entering both fields, a token appears under "Hash:". Use the COPY HASH button in the lower-right to copy it.

Notes on readability and visuals:

• The terminal uses a toned-down CRT/post-processing effect. If WebGL is unavailable, it falls back to 2D.
• Text and glow effects were tuned for clarity; the green theme is softened. Hint Mode flips to a red-on-black theme.

All submissions go under submissions/{your-github-username}/ with a specific filename pattern per question:

• File path format: submissions/<username>/<username>_q<N>.txt

  • Example for user octocat answering question 3:
    • submissions/octocat/octocat_q3.txt

• File contents: a single line with the format <hash>:<nonce>

  • Example: 2f5a...be9e:ab12cd34
  • You generate this from the UI by entering your username and your answer, then copying the token.

Important details:

• The PR author username must match the <username> segment in the path. CI uses your PR author login to validate.
• One file per question; submit as many questions as you want in a single PR, following the same pattern.

This repository includes scripts used by CI to validate your PR:

• Path validation: tools/validate_pr_paths.py

  • Ensures every changed file is under submissions/<your-login>/<your-login>_q<N>.txt.
  • If any file is outside the pattern or there are zero valid files, the check fails.

• Answer verification: tools/verify_answers.py

  • Reads the PR author (your GitHub login) and your changed files.
  • For each submission file, it reads <hash>:<nonce> and matches it against the expected token derived from:
    • sha256(sha256(username) + sha256(correct_answer) + nonce)
  • Correct answers are provided to CI via a secret JSON (CORRECT_ANSWERS_JSON).
  • If the derived token equals your submitted <hash>, the check passes; otherwise it fails.

• Commit signature check: tools/check_commit_signatures.py

  • Fails if a commit is detected as an unwanted bot-generated merge or otherwise flagged.

• Leaderboard (maintainer utility): tools/leaderboard.py

  • Tallies question counts per user and gives small bonus for earlier submissions per question. Outputs /tmp/scores.json when run by maintainers.

If a check fails, open the PR "Checks" tab to see which script reported an error and fix your submission (path, username mismatch, or wrong token).

• Double-check that the folder and filename use your exact GitHub login (case-sensitive where needed), e.g., submissions/octocat/octocat_q1.txt.
• Ensure file contents are exactly <hash>:<nonce> on one line with no extra spaces or newlines.
• If the UI shows — for the hash, it means a token hasn’t been generated; make sure both fields are filled and confirm with Enter.
• You can edit your username/answer via the EDIT buttons and regenerate the token at any time.
• Some questions include media links (video/image) at the top—open them for extra context.
• Click around stuff. Maybe you'd find something.

• At the top of the terminal area: Watch video and View image links open in a new tab.
• Can I submit without using the UI token?
  • CI requires the token format. If you know your answer is right, still use the UI to produce the correct <hash>:<nonce> pair.