Rev 3 glyphs: wire the 9 classifier-legacy marks (74→83), all backend archetypes now render real marks

Design Rev 3 drew the 9 legacy classifier marks (BRUSH #E0B84A, WHIFF #E86A6A,
CONNECTOR #9AB0C4, DISTRIBUTOR #7AB8D8, FASTBREAK #4AA0E8, FLEX #A08AC8,
HYBRID #C88AB0, SWITCH #C0B08A, SWITCHBOARD #90A0E8). Wired each to its own
Design mark + color (front lib/archetypes.js + backend archetypeService.js,
color-synced). These were the 9 NO-MARK backend keys — now none are on a
generic placeholder. They're classifier-side fallback renders (never
user-facing archetype names, per MANIFEST).

Re-imported Rev 3 package over specs/design-reference/ (83 glyph SVGs + MANIFEST
regenerated from the authoritative glyphDefs(); HANDOFF Rev 3 note).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

specs/design-reference/assets/glyphs/brush.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" fill="none"><path fill="none" stroke="currentColor" stroke-width="2.6" stroke-linecap="round" d="M5 19 15 9"/><path fill="currentColor" fill-opacity=".2" d="M15 9l4-4 1.6 1.6-4 4z"/><path fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" d="M15 9l4-4M5 19l-1 1M7 20l-2 1"/></svg>