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

types/next-auth.d.ts

@@ -0,0 +1,43 @@
+import type { PlatformUserRole, UserRole } from "@prisma/client";
+import "next-auth";
+import "next-auth/jwt";
+
+declare module "next-auth/jwt" {
+  interface JWT {
+    // Company user fields
+    companyId?: string;
+    role?: UserRole;
+    // Platform user fields
+    isPlatformUser?: boolean;
+    platformRole?: PlatformUserRole;
+  }
+}
+
+declare module "next-auth" {
+  interface Session {
+    user: {
+      id?: string;
+      email?: string;
+      name?: string | null;
+      image?: string | null;
+      // Company user fields
+      companyId?: string;
+      role?: UserRole;
+      // Platform user fields
+      isPlatformUser?: boolean;
+      platformRole?: PlatformUserRole;
+    };
+  }
+
+  interface User {
+    id: string;
+    email: string;
+    name?: string | null;
+    // Company user fields
+    companyId?: string;
+    role?: UserRole;
+    // Platform user fields
+    isPlatformUser?: boolean;
+    platformRole?: PlatformUserRole;
+  }
+}

types/rapideditor-country-coder.d.ts

@@ -0,0 +1,121 @@
+// Type declarations for @rapideditor/country-coder
+// Re-exports types from the package's dist/country-coder.d.ts
+declare module "@rapideditor/country-coder" {
+  import type { Feature, FeatureCollection, Geometry } from "geojson";
+
+  export type RegionFeatureProperties = {
+    id: string;
+    iso1A2: string | undefined;
+    iso1A3: string | undefined;
+    iso1N3: string | undefined;
+    m49: string | undefined;
+    wikidata: string;
+    emojiFlag: string | undefined;
+    ccTLD: string | undefined;
+    nameEn: string;
+    aliases: Array<string> | undefined;
+    country: string | undefined;
+    groups: Array<string>;
+    members: Array<string> | undefined;
+    level: string;
+    isoStatus: string | undefined;
+    driveSide: "left" | "right" | undefined;
+    roadSpeedUnit: "mph" | "km/h" | undefined;
+    roadHeightUnit: "ft" | "m" | undefined;
+    callingCodes: Array<string> | undefined;
+  };
+
+  export type RegionFeature = Feature<Geometry, RegionFeatureProperties>;
+  export type RegionFeatureCollection = FeatureCollection<
+    Geometry,
+    RegionFeatureProperties
+  >;
+  export type Vec2 = [number, number];
+  export type Bbox = [number, number, number, number];
+  export type PointGeometry = {
+    type: string;
+    coordinates: Vec2;
+  };
+  export type PointFeature = {
+    type: string;
+    geometry: PointGeometry;
+    properties: unknown;
+  };
+  export type Location = Vec2 | PointGeometry | PointFeature;
+  export type CodingOptions = {
+    level?: string | undefined;
+    maxLevel?: string | undefined;
+    withProp?: string | undefined;
+  };
+
+  export const borders: RegionFeatureCollection;
+  export function feature(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): RegionFeature | null;
+  export function iso1A2Code(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function iso1A3Code(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function iso1N3Code(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function m49Code(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function wikidataQID(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function emojiFlag(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function ccTLD(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function nameEn(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): string | null;
+  export function featuresContaining(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): Array<RegionFeature>;
+  export function featuresIn(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): Array<RegionFeature>;
+  export function aggregateFeature(
+    query: Location | string | number
+  ): RegionFeature | null;
+  export function isIn(
+    query: Location | string | number,
+    bounds: Location | string | number
+  ): boolean;
+  export function isInEuropeanUnion(query: Location | string | number): boolean;
+  export function isInUnitedNations(query: Location | string | number): boolean;
+  export function driveSide(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): "left" | "right" | null;
+  export function roadSpeedUnit(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): "mph" | "km/h" | null;
+  export function roadHeightUnit(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): "ft" | "m" | null;
+  export function callingCodes(
+    query: Location | string | number,
+    opts?: CodingOptions
+  ): Array<string>;
+}