chore(main): release 1.5.0

[HyperSoWeak]

🤖 I have created a release beep boop

1.5.0 (2026-05-23)

Features

• botinfo: show bot version from package.json (60ad4f4)
• mine: add expert 16×16 difficulty (3ce9ad1)
• mine: add renderBoardImage with dark Discord theme (7414051)
• mine: add renderStatusText for image+status separation (abdb51c)
• mine: chord open on revealed number cells (d88eb45)
• mine: use image board output with text fallback (f691e7b)

Bug Fixes

• mine-display: remove irregular whitespace characters (37b1912)
• mine: extend COL_EMOJIS and ROW_LABELS to support 16-col expert board (df8def8)
• mine: load system fonts and use FreeMono for board image rendering (8077cc1)
• mine: prevent column headers from combining into flag emoji (1a2c4da)
• mine: use unicode escapes in renderStatusText to avoid irregular whitespace lint errors (a243790)

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[HyperSoWeak]

🤖 Created releases:

• v1.5.0

🌻