feat(mistral): add Mistral provider with native PDF OCR and chat integration

test/test.chat.mistral.ts

@@ -0,0 +1,66 @@
+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import * as qenv from '@push.rocks/qenv';
+
+const testQenv = new qenv.Qenv('./', './.nogit/');
+
+import * as smartai from '../ts/index.js';
+
+let mistralProvider: smartai.MistralProvider;
+
+tap.test('Mistral Chat: should create and start Mistral provider', async () => {
+  mistralProvider = new smartai.MistralProvider({
+    mistralToken: await testQenv.getEnvVarOnDemand('MISTRAL_API_KEY'),
+  });
+  await mistralProvider.start();
+  expect(mistralProvider).toBeInstanceOf(smartai.MistralProvider);
+});
+
+tap.test('Mistral Chat: should create chat response', async () => {
+  const userMessage = 'What is the capital of France? Answer in one word.';
+  const response = await mistralProvider.chat({
+    systemMessage: 'You are a helpful assistant. Be concise.',
+    userMessage: userMessage,
+    messageHistory: [],
+  });
+  console.log(`Mistral Chat - User: ${userMessage}`);
+  console.log(`Mistral Chat - Response: ${response.message}`);
+
+  expect(response.role).toEqual('assistant');
+  expect(response.message).toBeTruthy();
+  expect(response.message.toLowerCase()).toInclude('paris');
+});
+
+tap.test('Mistral Chat: should handle message history', async () => {
+  const messageHistory: smartai.ChatMessage[] = [
+    { role: 'user', content: 'My name is Claude Test' },
+    { role: 'assistant', content: 'Nice to meet you, Claude Test!' }
+  ];
+
+  const response = await mistralProvider.chat({
+    systemMessage: 'You are a helpful assistant with good memory.',
+    userMessage: 'What is my name?',
+    messageHistory: messageHistory,
+  });
+
+  console.log(`Mistral Memory Test - Response: ${response.message}`);
+  expect(response.message.toLowerCase()).toInclude('claude test');
+});
+
+tap.test('Mistral Chat: should handle longer conversations', async () => {
+  const response = await mistralProvider.chat({
+    systemMessage: 'You are a helpful coding assistant.',
+    userMessage: 'Write a simple hello world function in TypeScript. Keep it brief.',
+    messageHistory: [],
+  });
+
+  console.log(`Mistral Coding Test - Response: ${response.message}`);
+  expect(response.message).toBeTruthy();
+  // Should contain some TypeScript/function code
+  expect(response.message).toInclude('function');
+});
+
+tap.test('Mistral Chat: should stop the provider', async () => {
+  await mistralProvider.stop();
+});
+
+export default tap.start();