Todoist-style: priorities P1-P4, estimates, FAB add form, Today view, natural quick add, drag-and-drop with haptics

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/src/lib/priority.ts

@@ -0,0 +1,24 @@
+import type { Task } from "./types";
+
+export const PRIORITIES: Task["priority"][] = [1, 2, 3, 4];
+
+export const PRIORITY_LABEL: Record<Task["priority"], string> = {
+  1: "Urgent",
+  2: "High",
+  3: "Medium",
+  4: "Low",
+};
+
+export const PRIORITY_COLOR: Record<Task["priority"], string> = {
+  1: "#E05B5B",
+  2: "#E0A93E",
+  3: "#5B8DEF",
+  4: "#6B7280",
+};
+
+export function formatEstimate(min: number | null): string | null {
+  if (!min) return null;
+  const h = Math.floor(min / 60);
+  const m = min % 60;
+  return h ? (m ? `${h}h${m}` : `${h}h`) : `${m}m`;
+}