[WIP] Add single-file index.html with encrypted game payload (domain-lock + anti-debug)

[Copilot]

• Analyzed existing index.html structure (1223 lines with inline JS)
• Identified script sections: domain-lock (lines 9-29) and main game logic (lines 261-1222)
• Create tools/encode-payload.mjs script for encryption
• Extract JavaScript game logic from index.html
• Create index.encrypted.html with same HTML/CSS but encrypted payload
• Implement domain lock for allowed domains (index-men.com, www.index-men.com, localhost)
• Add anti-debug protection (console suppression + DevTools detection)
• Use XOR + Base64 encryption with SALT "idx|2025|v1"
• Test the encrypted version works identically to original
• Verify domain restrictions work correctly

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