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.