Add StarMine Command Deck UI (React), styles and preview HTML

[jayCryptoJay]

Motivation

• Provide a playable frontend for the StarMine project featuring mining mechanics, upgrades, a mini-game and activity/quest UI for preview and local development.
• Include a standalone preview page to test game logic without full app hosting and to surface interactions with the Telegram WebApp API via a lightweight mock.

Description

• Add src/static/App.jsx implementing the full React UI with mining sessions, timers, session yield accounting, upgrade/power-up purchases, daily quests, achievements, an activity feed, and a 20s "Stellar Tap" mini-game, plus a small mock of the Telegram WebApp API for local preview.
• Add src/static/App.css with themed styles and animations for the starfield, drill orb, panels, badges, buttons and achievement states.
• Add src/static/preview.html as a minimal standalone preview that mirrors core gameplay logic in plain JS/HTML to facilitate quick local checks of timers, events and the mini-game without bundling.
• Use existing UI building blocks (Button, Card, Progress, Tabs) in the React component and wire up stateful effects (useEffect) for intervals, cosmic events, and game timers.

Testing

• No automated tests were executed for this PR.

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Codex Task

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add missing UI component modules before shipping App.jsx

App.jsx imports ./components/ui/button, card, progress, and tabs, but this commit does not add those modules anywhere under starmine_backend/src/static, so a normal React build will fail to resolve these imports and the new UI cannot compile. Please include these component files (or switch to existing local components) in the same change.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Use current tap score when mini-game timer expires

The mini-game interval effect only depends on gameLive, so the finishMiniGame callback captured by this interval is the one from round start (when tapScore is reset). When the timer reaches zero, rewards, quest progress, and best-score updates are computed from that stale score instead of the actual final score. This causes incorrect payouts for every round.

Useful? React with 👍 / 👎.