Remove estimated remaining decay, use audit values directly

Replace burn-rate estimation (linear decay between audits) with actual
last audit values. Remaining is now always the last weigh-in value or
original weight if no audits exist — no more speculative daily decay.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/types.ts

@@ -206,28 +206,20 @@ export const helpers = {
     if (!cfg) return false;
     return this.daysSinceCheck(p, today) >= cfg.cadenceDays;
   },
-  estimatedRemaining(p: Item, today = TODAY_STR): number {
+  remaining(p: Item): number {
     if (p.status !== "active" && p.status !== "checked-out") return 0;
     if (p.kind === "discrete") {
       return p.countLastAudit ?? p.countOriginal;
     }
     const last = this.lastAudit(p);
-    if (!last) return p.weight;
-    const daysSinceBase = Math.max(
-      0,
-      Math.floor((+new Date(today) - +new Date(last.date)) / 86_400_000),
-    );
-    const expectedLifespan =
-      p.type === "Flower" ? 35 : p.type === "Concentrate" ? 40 : 90;
-    const dailyBurn = p.weight / expectedLifespan;
-    return Math.max(0, last.value - dailyBurn * daysSinceBase);
+    return last ? last.value : p.weight;
   },
-  pctRemaining(p: Item, today = TODAY_STR): number {
+  pctRemaining(p: Item): number {
     if (p.kind === "discrete") {
       const cur = p.countLastAudit ?? p.countOriginal;
       return p.countOriginal > 0 ? cur / p.countOriginal : 0;
     }
-    const est = this.estimatedRemaining(p, today);
-    return p.weight > 0 ? est / p.weight : 0;
+    const rem = this.remaining(p);
+    return p.weight > 0 ? rem / p.weight : 0;
   },
 };