**Refactor:** Restructure server package to streamline imports and improve file organization

- Moved `providers`, `services`, `models`, `lib`, and related files to `src` directory within `server` package.
- Adjusted imports across the codebase to reflect the new paths.
- Renamed several `.ts` files for consistency.
- Introduced an `index.ts` in the `ai/providers` package to export all providers.

This improves maintainability and aligns with the project's updated directory structure.

packages/durable-objects/src/ServerCoordinator.ts

@@ -0,0 +1,79 @@
+import { ProviderRepository } from '@open-gsio/ai/providers/_ProviderRepository.ts';
+// @ts-expect-error - don't care
+// eslint-disable-next-line import/no-unresolved
+import { DurableObject } from 'cloudflare:workers';
+
+export default class ServerCoordinator extends DurableObject {
+  env;
+  state;
+  constructor(state, env) {
+    super(state, env);
+    this.state = state;
+    this.env = env;
+  }
+
+  // Public method to calculate dynamic max tokens
+  async dynamicMaxTokens(model, input, maxOuputTokens) {
+    const modelMeta = ProviderRepository.getModelMeta(model, this.env);
+
+    // The token‑limit information is stored in three different keys:
+    // max_completion_tokens
+    // context_window
+    // context_length
+
+    if ('max_completion_tokens' in modelMeta) {
+      return modelMeta.max_completion_tokens;
+    } else if ('context_window' in modelMeta) {
+      return modelMeta.context_window;
+    } else if ('context_length' in modelMeta) {
+      return modelMeta.context_length;
+    } else {
+      return 2000;
+    }
+  }
+
+  // Public method to retrieve conversation history
+  async getConversationHistory(conversationId) {
+    const history = await this.env.KV_STORAGE.get(`conversations:${conversationId}`);
+
+    return JSON.parse(history) || [];
+  }
+
+  // Public method to save a message to the conversation history
+  async saveConversationHistory(conversationId, message) {
+    const history = await this.getConversationHistory(conversationId);
+    history.push(message);
+    await this.env.KV_STORAGE.put(`conversations:${conversationId}`, JSON.stringify(history));
+  }
+
+  async saveStreamData(streamId, data, ttl = 10) {
+    const expirationTimestamp = Date.now() + ttl * 1000;
+    // await this.state.storage.put(streamId, { data, expirationTimestamp });
+    await this.env.KV_STORAGE.put(
+      `streams:${streamId}`,
+      JSON.stringify({ data, expirationTimestamp }),
+    );
+  }
+
+  // New method to get stream data
+  async getStreamData(streamId) {
+    const streamEntry = await this.env.KV_STORAGE.get(`streams:${streamId}`);
+    if (!streamEntry) {
+      return null;
+    }
+
+    const { data, expirationTimestamp } = JSON.parse(streamEntry);
+    if (Date.now() > expirationTimestamp) {
+      // await this.state.storage.delete(streamId); // Clean up expired entry
+      await this.deleteStreamData(`streams:${streamId}`);
+      return null;
+    }
+
+    return data;
+  }
+
+  // New method to delete stream data (cleanup)
+  async deleteStreamData(streamId) {
+    await this.env.KV_STORAGE.delete(`streams:${streamId}`);
+  }
+}