Add green-bean inventory and cupping features

Ports inventory management and SCA-style cupping scoring from
hope_roaster: lot tracking with audit-logged consumption, cupping
sessions with server-authoritative scoring and a live radar chart,
and links from the planner (draw-from-lot, open-cupping-session).

Also fixes the Blend/Single-origin toggle layout, replaces tooltips
with an in-context "why" teaching layer, and stages the planner UI
into pre-roast vs. post-roast phases.

shared/fields.js

@@ -55,6 +55,7 @@ export function blankPlan() {
     sanityOverride: { drying: null, maillard: null, dtr: null, ceiling: null },
     reference: null,
     prefill: null,
+    inventory: { lotId: "", lotLabel: "", consumed: null },
   };
 }