Add ESLint + Prettier + EditorConfig tooling at repo root

v1.0 Phase 1.1 — repo-wide lint/format baseline.

- eslint.config.mjs (flat config) lints server, client, shared
- .prettierrc.json, .prettierignore, .editorconfig, .nvmrc
- Root package.json holds shared devDeps; per-package scripts keep
  their typecheck + test runners
- Fix 7 lint issues surfaced by the baseline run:
  - TicketDetail.tsx: replace ternary-with-side-effects with if/else
  - admin/Users.tsx: escape apostrophe in JSX
  - errorHandler.ts: typed err as unknown with ErrorLike refinement
  - users.ts: Prisma.UserUpdateInput instead of Record<string, any>
  - seed.ts: drop unused goddard binding
- Run prettier across tracked sources for a clean formatting baseline

client/src/components/CTISelect.tsx

@@ -1,57 +1,57 @@
-import { useEffect, useState } from 'react'
-import api from '../api/client'
-import { Category, CTIType, Item } from '../types'
+import { useEffect, useState } from 'react';
+import api from '../api/client';
+import { Category, CTIType, Item } from '../types';
 
 interface CTISelectProps {
-  value: { categoryId: string; typeId: string; itemId: string }
-  onChange: (value: { categoryId: string; typeId: string; itemId: string }) => void
-  disabled?: boolean
+  value: { categoryId: string; typeId: string; itemId: string };
+  onChange: (value: { categoryId: string; typeId: string; itemId: string }) => void;
+  disabled?: boolean;
 }
 
 export default function CTISelect({ value, onChange, disabled }: CTISelectProps) {
-  const [categories, setCategories] = useState<Category[]>([])
-  const [types, setTypes] = useState<CTIType[]>([])
-  const [items, setItems] = useState<Item[]>([])
+  const [categories, setCategories] = useState<Category[]>([]);
+  const [types, setTypes] = useState<CTIType[]>([]);
+  const [items, setItems] = useState<Item[]>([]);
 
   useEffect(() => {
-    api.get<Category[]>('/cti/categories').then((r) => setCategories(r.data))
-  }, [])
+    api.get<Category[]>('/cti/categories').then((r) => setCategories(r.data));
+  }, []);
 
   useEffect(() => {
     if (!value.categoryId) {
-      setTypes([])
-      setItems([])
-      return
+      setTypes([]);
+      setItems([]);
+      return;
     }
     api
       .get<CTIType[]>('/cti/types', { params: { categoryId: value.categoryId } })
-      .then((r) => setTypes(r.data))
-  }, [value.categoryId])
+      .then((r) => setTypes(r.data));
+  }, [value.categoryId]);
 
   useEffect(() => {
     if (!value.typeId) {
-      setItems([])
-      return
+      setItems([]);
+      return;
     }
     api
       .get<Item[]>('/cti/items', { params: { typeId: value.typeId } })
-      .then((r) => setItems(r.data))
-  }, [value.typeId])
+      .then((r) => setItems(r.data));
+  }, [value.typeId]);
 
   const handleCategory = (categoryId: string) => {
-    onChange({ categoryId, typeId: '', itemId: '' })
-  }
+    onChange({ categoryId, typeId: '', itemId: '' });
+  };
 
   const handleType = (typeId: string) => {
-    onChange({ ...value, typeId, itemId: '' })
-  }
+    onChange({ ...value, typeId, itemId: '' });
+  };
 
   const handleItem = (itemId: string) => {
-    onChange({ ...value, itemId })
-  }
+    onChange({ ...value, itemId });
+  };
 
   const selectClass =
-    'block w-full bg-gray-800 border border-gray-700 text-gray-100 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:opacity-50 disabled:cursor-not-allowed'
+    'block w-full bg-gray-800 border border-gray-700 text-gray-100 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent disabled:opacity-50 disabled:cursor-not-allowed';
 
   return (
     <div className="grid grid-cols-3 gap-3">
@@ -106,5 +106,5 @@ export default function CTISelect({ value, onChange, disabled }: CTISelectProps)
         </select>
       </div>
     </div>
-  )
+  );
 }