Every FerrLabs site now has a brand-specific favicon that matches the navbar glyph:

• FerrFlow: node graph (3 nodes + edges) in orange.
• FerrTrack: concentric target with diagonal arrow in indigo.
• FerrVault: keyhole in emerald.
• FerrGrowth: growing plant (stem + 2 leaves) in violet.
• FerrLabs: concentric circles in slate.

Browser tab icons, bookmark icons, and PWA icons all updated. Same SVG glyphs as the navbars. No rasterisation drift.