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.

package.json

@@ -13,6 +13,7 @@
     "@earendil-works/pi-coding-agent": "^0.83.0",
     "bcryptjs": "^3.0.3",
     "express": "^5.0.1",
+    "nodemailer": "^9.0.3",
     "pg": "^8.22.0"
   },
   "devDependencies": {