fix(api): fix lint errors in lazy node-pty import types

Use proper import type instead of inline import() type annotations
that violate @typescript-eslint/consistent-type-imports rule.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/api/src/terminal/terminal.service.ts

@@ -14,13 +14,16 @@
  */
 
 import { Injectable, Logger, OnModuleInit } from "@nestjs/common";
+import type { IPty } from "node-pty";
 import type { Socket } from "socket.io";
 import { randomUUID } from "node:crypto";
 
 // Lazy-loaded in onModuleInit via dynamic import() to prevent crash
 // if the native binary is missing. node-pty requires a compiled .node
 // binary which may not be available in all Docker environments.
-type NodePtyModule = typeof import("node-pty");
+interface NodePtyModule {
+  spawn: (file: string, args: string[], options: Record<string, unknown>) => IPty;
+}
 let pty: NodePtyModule | null = null;
 
 /** Maximum concurrent PTY sessions per workspace */
@@ -36,7 +39,7 @@ const DEFAULT_ROWS = 24;
 export interface TerminalSession {
   sessionId: string;
   workspaceId: string;
-  pty: import("node-pty").IPty;
+  pty: IPty;
   name?: string;
   createdAt: Date;
 }