The generated icons were solid brand-blue squares with no glyph.
gen-icons.py now procedurally draws a page/notes icon (folded corner,
text lines) with anti-aliasing, kept within the maskable-icon safe
zone so Android's adaptive-icon masks don't clip it. Also adds an
apple-touch-icon and wires favicon/apple-touch-icon links into
index.html, and marks manifest icons purpose "any maskable".
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01C3DGg1pvmvf81zXs4pk1J7
