Add org invites section to dashboard with accept/decline flow

Backend:
- Add me.invites endpoints (list, get, accept, decline) to API contract
- Create invites procedures for fetching user's pending invites
- Only show invites if email matches and is verified
- Refactor me routes into me/_routes.ts for consistency

Frontend:
- Add pending invitations section to /dashboard page
- Create /account/org-invites/[inviteId] page for accept/decline
- Show invite details (org, role, inviter, dates)
- Redirect to org dashboard after accepting

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/api-contract/src/contract.ts

@@ -45,6 +45,7 @@ import {
   setupProfileInputSchema,
   trustDeviceInputSchema,
   updateProfileInputSchema,
+  userInviteOutputSchema,
   userProfileSchema,
 } from "./schemas/user.js";
 
@@ -147,6 +148,20 @@ export const contract = oc.router({
         .output(successResponseSchema),
     }),
 
+    // Org invites for the current user
+    invites: oc.router({
+      list: oc.output(z.array(userInviteOutputSchema)),
+      get: oc
+        .input(z.object({ inviteId: z.number() }))
+        .output(userInviteOutputSchema),
+      accept: oc
+        .input(z.object({ inviteId: z.number() }))
+        .output(successResponseSchema),
+      decline: oc
+        .input(z.object({ inviteId: z.number() }))
+        .output(successResponseSchema),
+    }),
+
     // Sessions & devices
     listSessions: oc.output(z.array(sessionOutputSchema)),
     revokeSession: oc