feat(org): add celebration confetti when joining or creating organization

Add a celebratory experience when users join or create an organization:
- Add canvas-confetti dependency for visual effects
- Store organization name in localStorage after successful join/create
- Display celebration dialog with confetti animation on ProfilePage
- Clear the celebration flag after showing to prevent repeat displays

package-lock.json

@@ -37,6 +37,7 @@
         "@radix-ui/react-toggle-group": "^1.1.10",
         "@radix-ui/react-tooltip": "^1.2.7",
         "@tanstack/react-query": "^5.83.0",
+        "canvas-confetti": "^1.9.4",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "cmdk": "^1.1.1",
@@ -3955,6 +3956,16 @@
       ],
       "license": "CC-BY-4.0"
     },
+    "node_modules/canvas-confetti": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/canvas-confetti/-/canvas-confetti-1.9.4.tgz",
+      "integrity": "sha512-yxQbJkAVrFXWNbTUjPqjF7G+g6pDotOUHGbkZq2NELZUMDpiJ85rIEazVb8GTaAptNW2miJAXbs1BtioA251Pw==",
+      "license": "ISC",
+      "funding": {
+        "type": "donate",
+        "url": "https://www.paypal.me/kirilvatev"
+      }
+    },
     "node_modules/chai": {
       "version": "5.3.3",
       "resolved": "https://registry.npmjs.org/chai/-/chai-5.3.3.tgz",