Refactor: Relocate SDK files to lib and update imports

Moved all SDK files from the `sdk` directory to the `lib` directory to better align with project structure. Updated all associated import paths across the codebase to reflect this change. Removed unused or commented-out code in `SiteCoordinator.js` for better clarity and maintainability.

workers/site/durable_objects/SiteCoordinator.js

@@ -7,24 +7,10 @@ export default class SiteCoordinator extends DurableObject {
     this.env = env;
   }
 
-  // Public method to calculate dynamic max tokens
   async dynamicMaxTokens(input, maxOuputTokens) {
     return 2000;
-    // const baseTokenLimit = 1024;
-    //
-    //
-    // const { encode } = await import("gpt-tokenizer/esm/model/gpt-4o");
-    //
-    // const inputTokens = Array.isArray(input)
-    //     ? encode(input.map(i => i.content).join(' '))
-    //     : encode(input);
-    //
-    // const scalingFactor = inputTokens.length > 300 ? 1.5 : 1;
-    //
-    // return Math.min(baseTokenLimit + Math.floor(inputTokens.length * scalingFactor^2), maxOuputTokens);
   }
 
-  // Public method to retrieve conversation history
   async getConversationHistory(conversationId) {
     const history = await this.env.KV_STORAGE.get(
       `conversations:${conversationId}`,
@@ -33,7 +19,6 @@ export default class SiteCoordinator extends DurableObject {
     return JSON.parse(history) || [];
   }
 
-  // Public method to save a message to the conversation history
   async saveConversationHistory(conversationId, message) {
     const history = await this.getConversationHistory(conversationId);
     history.push(message);
@@ -52,7 +37,6 @@ export default class SiteCoordinator extends DurableObject {
     );
   }
 
-  // New method to get stream data
   async getStreamData(streamId) {
     const streamEntry = await this.env.KV_STORAGE.get(`streams:${streamId}`);
     if (!streamEntry) {
@@ -61,7 +45,6 @@ export default class SiteCoordinator extends DurableObject {
 
     const { data, expirationTimestamp } = JSON.parse(streamEntry);
     if (Date.now() > expirationTimestamp) {
-      // await this.state.storage.delete(streamId); // Clean up expired entry
       await this.deleteStreamData(`streams:${streamId}`);
       return null;
     }
@@ -69,7 +52,6 @@ export default class SiteCoordinator extends DurableObject {
     return data;
   }
 
-  // New method to delete stream data (cleanup)
   async deleteStreamData(streamId) {
     await this.env.KV_STORAGE.delete(`streams:${streamId}`);
   }

workers/site/providers/cerebras.ts

@@ -6,7 +6,7 @@ import {
   ModelSnapshotType2,
   UnionStringArray,
 } from "mobx-state-tree";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class CerebrasSdk {
   static async handleCerebrasStream(

workers/site/providers/claude.ts

@@ -7,7 +7,7 @@ import {
   ModelSnapshotType2,
   UnionStringArray,
 } from "mobx-state-tree";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class ClaudeChatSdk {
   private static async streamClaudeResponse(

workers/site/providers/cloudflareAi.ts

@@ -6,7 +6,7 @@ import {
   ModelSnapshotType2,
   UnionStringArray,
 } from "mobx-state-tree";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class CloudflareAISdk {
   static async handleCloudflareAIStream(

workers/site/providers/fireworks.ts

@@ -9,7 +9,7 @@ import {
   UnionStringArray,
 } from "mobx-state-tree";
 import Message from "../models/Message";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class FireworksAiChatSdk {
   private static async streamFireworksResponse(

workers/site/providers/google.ts

@@ -1,5 +1,5 @@
 import { OpenAI } from "openai";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 import { StreamParams } from "../services/ChatService";
 
 export class GoogleChatSdk {

workers/site/providers/groq.ts

@@ -6,7 +6,7 @@ import {
   ModelSnapshotType2,
   UnionStringArray,
 } from "mobx-state-tree";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class GroqChatSdk {
   static async handleGroqStream(

workers/site/providers/openai.ts

@@ -1,5 +1,5 @@
 import { OpenAI } from "openai";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class OpenAiChatSdk {
   static async handleOpenAiStream(

workers/site/providers/xai.ts

@@ -1,5 +1,5 @@
 import { OpenAI } from "openai";
-import ChatSdk from "../sdk/chat-sdk";
+import ChatSdk from "../lib/chat-sdk";
 
 export class XaiChatSdk {
   static async handleXaiStream(

workers/site/services/ChatService.ts

@@ -1,6 +1,6 @@
 import {flow, getSnapshot, types} from 'mobx-state-tree';
 import OpenAI from 'openai';
-import ChatSdk from '../sdk/chat-sdk';
+import ChatSdk from '../lib/chat-sdk';
 import Message from "../models/Message";
 import O1Message from "../models/O1Message";
 import {getModelFamily, ModelFamily} from "../../../src/components/chat/lib/SupportedModels";
@@ -8,7 +8,7 @@ import {OpenAiChatSdk} from "../providers/openai";
 import {GroqChatSdk} from "../providers/groq";
 import {ClaudeChatSdk} from "../providers/claude";
 import {FireworksAiChatSdk} from "../providers/fireworks";
-import handleStreamData from "../sdk/handleStreamData";
+import handleStreamData from "../lib/handleStreamData";
 import {GoogleChatSdk} from "../providers/google";
 import {XaiChatSdk} from "../providers/xai";
 import {CerebrasSdk} from "../providers/cerebras";