fix: comprehensive TypeScript/build fixes and modernization

- Update tsconfig to ES2024 target and bundler moduleResolution
- Add dynamic imports for chart.js and recharts (bundle optimization)
- Consolidate 17 useState into useReducer in sessions page
- Fix 18 .js extension imports across lib files
- Add type declarations for @rapideditor/country-coder
- Fix platform user types (PlatformUserRole enum)
- Fix Calendar component prop types
- Centralize next-auth type augmentation
- Add force-dynamic to all API routes (prevent build-time prerender)
- Fix Prisma JSON null handling with Prisma.DbNull
- Fix various type mismatches (SessionMessage, ImportRecord, etc.)
- Export ButtonProps from button component
- Update next-themes import path
- Replace JSX.Element with React.ReactElement
- Remove obsolete debug scripts and pnpm lockfile
- Downgrade eslint to v8 for next compatibility

components/ui/button.tsx

@@ -56,4 +56,9 @@ function Button({
   );
 }
 
-export { Button, buttonVariants };
+type ButtonProps = React.ComponentProps<"button"> &
+  VariantProps<typeof buttonVariants> & {
+    asChild?: boolean;
+  };
+
+export { Button, buttonVariants, type ButtonProps };

components/ui/calendar.tsx

@@ -14,11 +14,9 @@ import {
 import { Button, buttonVariants } from "@/components/ui/button";
 import { cn } from "@/lib/utils";
 
-interface CalendarRootProps {
-  className?: string;
+type CalendarRootProps = {
   rootRef?: React.Ref<HTMLDivElement>;
-  [key: string]: unknown;
-}
+} & React.HTMLAttributes<HTMLDivElement>;
 
 const CalendarRoot = ({ className, rootRef, ...props }: CalendarRootProps) => {
   return (
@@ -33,13 +31,14 @@ const CalendarRoot = ({ className, rootRef, ...props }: CalendarRootProps) => {
 
 interface CalendarChevronProps {
   className?: string;
-  orientation: "left" | "right" | "up" | "down";
-  [key: string]: unknown;
+  size?: number;
+  disabled?: boolean;
+  orientation?: "left" | "right" | "up" | "down";
 }
 
 const CalendarChevron = ({
   className,
-  orientation,
+  orientation = "down",
   ...props
 }: CalendarChevronProps) => {
   if (orientation === "left") {
@@ -59,19 +58,20 @@ const CalendarChevron = ({
   return <ChevronDownIcon className={cn("size-4", className)} {...props} />;
 };
 
-interface CalendarWeekNumberProps {
-  children: React.ReactNode;
-  [key: string]: unknown;
+interface CalendarWeekNumberProps
+  extends React.ThHTMLAttributes<HTMLTableCellElement> {
+  week: { weekNumber: number };
 }
 
 const CalendarWeekNumber = ({
+  week,
   children,
   ...props
 }: CalendarWeekNumberProps) => {
   return (
     <td {...props}>
       <div className="flex size-9 items-center justify-center p-0 text-sm">
-        {children}
+        {children ?? week.weekNumber}
       </div>
     </td>
   );