Simplify apps/cli/ code

- config.ts: Convert arrow functions to function declarations
- api-client.ts: Extract duplicated RPCLink logic into buildClient helper
- format-error.ts: Add centralized ORPCError handling
- complete-login.ts: Remove redundant error handling (now in formatError)
- status.ts: Simplify formatRelativeTime, improve whitespace
- create.ts: Rename validRoles to VALID_ROLES, add as const, early return
- completions.ts: Derive Shell type from SUPPORTED_SHELLS array

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

apps/cli/src/routes/auth/status.ts

@@ -17,16 +17,16 @@ function formatRelativeTime(date: Date): string {
   if (diffDays < 0) {
     return `${Math.abs(diffDays).toLocaleString()} days ago`;
   }
+
   if (diffDays === 0) {
     const diffHours = Math.floor(diffMs / (1000 * 60 * 60));
-    if (diffHours <= 0) {
-      return "expired";
-    }
-    return `in ${diffHours.toLocaleString()} hours`;
+    return diffHours <= 0 ? "expired" : `in ${diffHours.toLocaleString()} hours`;
   }
+
   if (diffDays === 1) {
     return "tomorrow";
   }
+
   return `in ${diffDays.toLocaleString()} days`;
 }