feat: add Domino Card Maker tool to hub

[devin-ai-integration]

Summary

Adds a new Domino Card Maker teacher tool: paste a word list and generate a printable set of matching domino tiles (each tile links one word to the next in a closed loop, so the chain wraps around for matching activities). Supports comma/newline lists, image URLs, configurable set size / tiles-per-page / text size / casing, reshuffle, and print-to-A4-PDF.

Integrated following the hub's standard contribution flow (self-contained module under apps/ + a games.json registry entry), so it automatically inherits tabs/pins/search/dark-mode.

Changes

• apps/tools/domino-maker/index.html — the self-contained tool, adapted from the provided file to KlassKit conventions:
  • Aligned the Tailwind palette to the standard KlassKit colors (pink #ff4785, orange #ff7e33, green #00d063, blue #1ea7fd, dark #0f172a).
  • Replaced the standalone-only dark mode with the shared hub theme sync pattern (reads theme_domino-maker / theme_hub, listens for the storage event), matching worksheet-maker. The toggle now persists to theme_domino-maker.
• games.json — registered the tool as a tool entry and bumped metadata.totalGames 67 → 68:

{
  "id": "domino-maker",
  "title": "Domino Maker",
  "category": "tool",
  "path": "./apps/tools/domino-maker/index.html",
  "icon": "rectangle-horizontal",
  "description": "Printable Domino Card Maker",
  "tags": ["vocabulary", "materials", "printable", "tool"],
  "active": true,
  "guide": { "short": "...", "steps": [ /* 4 steps */ ] }
}

Verification

• games.json parses; Playwright suite passes (2 passed); page returns 200 via npx serve.

Link to Devin session: https://app.devin.ai/sessions/6a816cc7fd9a480a975d22ffdde85c3a
Requested by: @pod-III

[devin-ai-integration]

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Project	Deployment	Actions	Updated (UTC)
klasskit	Ready	Preview, Comment	Jun 18, 2026 5:43am