* Add GPL-3.0 license (Copyright 2026 Julian).

Replace prior license with GNU GPL v3.0 full text at repo root.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Harden development overview live GitHub stats against rate limits.

Stagger search requests with retry/backoff, cache in sessionStorage, show closed issues in metrics, and apply partial updates when some counts fail.

Co-authored-by: Cursor <cursoragent@cursor.com>

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Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: li-goal-worker <goal-worker@li-langverse.dev>