feat(bookings): improve admin booking wizard and user dashboard

Backend:
- Enriched GetAllUserBookings response with calculated total_amount,
  amount_paid, and duration_minutes.
- Refactored GetBookingHandler to return a flat booking object matching
  frontend expectations.
- Added account_role to admin user list response and sorted users by
  booking activity.
- Corrected function name oo to AdminCreateBookingForUserHandler.

Frontend:
- Rebuilt BookingCreateModal into a 4-step wizard supporting guest
  bookings, service overrides, and real-time availability checks.
- Fixed account dashboard logic to correctly identify upcoming vs past
  bookings and sort unpaid items to the top.
- Extracted booking flow into a shared BookingFlow component.
- Redirected admin users from home page to /today.

obsidian/.obsidian/workspace.json

@@ -4,21 +4,21 @@
     "type": "split",
     "children": [
       {
-        "id": "f918f140cb277962",
+        "id": "4f4ac1241ce3420f",
         "type": "tabs",
         "children": [
           {
-            "id": "7fe99991d0e457c6",
+            "id": "0c84336298f72379",
             "type": "leaf",
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Express.js Cheat Sheet.md",
-                "mode": "preview",
+                "file": "Crussell/Crussell Nails.md",
+                "mode": "source",
                 "source": false
               },
               "icon": "lucide-file",
-              "title": "Express.js Cheat Sheet"
+              "title": "Crussell Nails"
             }
           }
         ]
@@ -78,8 +78,7 @@
       }
     ],
     "direction": "horizontal",
-    "width": 300,
-    "collapsed": true
+    "width": 300
   },
   "right": {
     "id": "2750d7726f904ef3",
@@ -170,12 +169,12 @@
       "bases:Create new base": false
     }
   },
-  "active": "7fe99991d0e457c6",
+  "active": "0c84336298f72379",
   "lastOpenFiles": [
+    "Crussell/Backend/bookings.md",
+    "Crussell/Crussell Nails.md",
     "Untitled.base",
     "Untitled.canvas",
-    "Express.js Cheat Sheet.md",
-    "Crussell/Crussell Nails.md",
-    "Crussell/Backend/bookings.md"
+    "Express.js Cheat Sheet.md"
   ]
 }