chore: initial Vector 2.0 monorepo

Ground-up TypeScript rewrite of the Vector hardware parts inventory
system. Ships the full roadmap (Phases 0-8) in one initial commit:

- pnpm + Turbo monorepo: apps/{api,web,e2e}, packages/{db,shared,ui,config}
- Express 5 + Prisma 5 + zod validation + JWT w/ refresh-token rotation
- React 19 + Vite + shadcn/ui + TanStack Query/Table + nuqs URL state
- Repair/RMA, tags, bulk ops, saved views, CSV audit export
- Analytics dashboard on Recharts + EOL tracking
- Signed webhook subscriptions (HMAC-SHA256) with in-process emitter
- Vitest unit tests (shared schemas, api services/helpers) + Playwright skeleton
- Gitea Actions CI (lint, typecheck, test+coverage, build) + Renovate

Deferred follow-ups: Postgres cutover (data-migration script ready),
BullMQ worker for webhook delivery, @react-pdf PDF export, CSV import wizard.

packages/ui/src/components/form.tsx

@@ -0,0 +1,134 @@
+import * as React from 'react';
+import * as LabelPrimitive from '@radix-ui/react-label';
+import { Slot } from '@radix-ui/react-slot';
+import {
+  Controller,
+  FormProvider,
+  useFormContext,
+  type ControllerProps,
+  type FieldPath,
+  type FieldValues,
+} from 'react-hook-form';
+import { cn } from '../lib/cn.js';
+import { Label } from './label.js';
+
+export const Form = FormProvider;
+
+type FormFieldContextValue<
+  TFieldValues extends FieldValues = FieldValues,
+  TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>,
+> = { name: TName };
+
+const FormFieldContext = React.createContext<FormFieldContextValue>({} as FormFieldContextValue);
+
+export const FormField = <
+  TFieldValues extends FieldValues = FieldValues,
+  TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>,
+>({
+  ...props
+}: ControllerProps<TFieldValues, TName>) => (
+  <FormFieldContext.Provider value={{ name: props.name }}>
+    <Controller {...props} />
+  </FormFieldContext.Provider>
+);
+
+type FormItemContextValue = { id: string };
+const FormItemContext = React.createContext<FormItemContextValue>({} as FormItemContextValue);
+
+export const FormItem = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => {
+    const id = React.useId();
+    return (
+      <FormItemContext.Provider value={{ id }}>
+        <div ref={ref} className={cn('space-y-1.5', className)} {...props} />
+      </FormItemContext.Provider>
+    );
+  },
+);
+FormItem.displayName = 'FormItem';
+
+export function useFormField() {
+  const fieldContext = React.useContext(FormFieldContext);
+  const itemContext = React.useContext(FormItemContext);
+  const { getFieldState, formState } = useFormContext();
+  if (!fieldContext) throw new Error('useFormField must be used within <FormField>');
+  const fieldState = getFieldState(fieldContext.name, formState);
+  const { id } = itemContext;
+  return {
+    id,
+    name: fieldContext.name,
+    formItemId: `${id}-form-item`,
+    formDescriptionId: `${id}-form-item-description`,
+    formMessageId: `${id}-form-item-message`,
+    ...fieldState,
+  };
+}
+
+export const FormLabel = React.forwardRef<
+  React.ElementRef<typeof LabelPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof LabelPrimitive.Root>
+>(({ className, ...props }, ref) => {
+  const { error, formItemId } = useFormField();
+  return (
+    <Label
+      ref={ref}
+      className={cn(error && 'text-destructive', className)}
+      htmlFor={formItemId}
+      {...props}
+    />
+  );
+});
+FormLabel.displayName = 'FormLabel';
+
+export const FormControl = React.forwardRef<
+  React.ElementRef<typeof Slot>,
+  React.ComponentPropsWithoutRef<typeof Slot>
+>(({ ...props }, ref) => {
+  const { error, formItemId, formDescriptionId, formMessageId } = useFormField();
+  return (
+    <Slot
+      ref={ref}
+      id={formItemId}
+      aria-describedby={error ? `${formDescriptionId} ${formMessageId}` : formDescriptionId}
+      aria-invalid={!!error}
+      {...props}
+    />
+  );
+});
+FormControl.displayName = 'FormControl';
+
+export const FormDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => {
+  const { formDescriptionId } = useFormField();
+  return (
+    <p
+      ref={ref}
+      id={formDescriptionId}
+      className={cn('text-xs text-muted-foreground', className)}
+      {...props}
+    />
+  );
+});
+FormDescription.displayName = 'FormDescription';
+
+export const FormMessage = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, children, ...props }, ref) => {
+  const { error, formMessageId } = useFormField();
+  const body = error ? String(error.message) : children;
+  if (!body) return null;
+  return (
+    <p
+      ref={ref}
+      id={formMessageId}
+      className={cn('text-xs font-medium text-destructive', className)}
+      {...props}
+    >
+      {body}
+    </p>
+  );
+});
+FormMessage.displayName = 'FormMessage';