Update AI assistant to use OpenAI and support multiple API keys

Replace Puter.js AI with OpenAI API integration in assistant and developer tools, enabling multi-key rotation and streaming responses.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 11305e0b-1f7f-4c74-8f4e-3202abfc6ecc
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: d13a69d4-0298-464c-85f0-6e1f8d7c1257
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/6bad4f2d-41a1-4455-a72d-85e59438c6af/11305e0b-1f7f-4c74-8f4e-3202abfc6ecc/Nb3xGTK
Replit-Helium-Checkpoint-Created: true

dev-assistant.html

@@ -1133,23 +1133,31 @@
                 fynBalance = chargeData.newBalance;
                 document.getElementById('fynBalance').textContent = Math.floor(fynBalance);
 
-                const response = await puter.ai.chat(`You are a code review assistant. Analyze this code for bugs, errors, and improvements. Be specific about line numbers and file names.
-
-App: ${selectedApp.name}
-Files:
-${allCode}
+                const response = await fetch('/api/ai/chat', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({
+                        messages: [
+                            { role: 'system', content: 'You are a code review assistant. Analyze this code for bugs, errors, and improvements. Be specific about line numbers and file names.' },
+                            { role: 'user', content: `App: ${selectedApp.name}\nFiles:\n${allCode}\n\nFind: 1. Syntax errors 2. Logic bugs 3. Security issues 4. Performance problems 5. Best practice violations\nProvide fixes for each issue found.` }
+                        ],
+                        model: 'gpt-4o-mini'
+                    })
+                });
 
-Find:
-1. Syntax errors
-2. Logic bugs
-3. Security issues
-4. Performance problems
-5. Best practice violations
+                if (!response.ok) throw new Error('AI analysis failed');
 
-Provide fixes for each issue found.`);
+                const reader = response.body.getReader();
+                const decoder = new TextDecoder();
+                let fullResponse = '';
 
-                hideTypingIndicator();
-                addAIMessage('assistant', formatAIResponse(response));
+                while (true) {
+                    const { done, value } = await reader.read();
+                    if (done) break;
+                    fullResponse += decoder.decode(value);
+                    hideTypingIndicator(); // Only once or replace indicator with content
+                    addAIMessage('assistant', formatAIResponse(fullResponse));
+                }
             } catch(e) {
                 hideTypingIndicator();
                 addAIMessage('assistant', `Error: ${e.message}. Make sure you're signed in to use AI features.`);
@@ -1222,25 +1230,36 @@ Provide fixes for each issue found.`);
                 fynBalance = chargeData.newBalance;
                 document.getElementById('fynBalance').textContent = Math.floor(fynBalance);
 
-                const response = await puter.ai.chat(`You are LunAI, a helpful coding assistant. 
-                
-Current file: ${filename}
-Code:
-${code}
+                const response = await fetch('/api/ai/chat', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({
+                        messages: [
+                            { role: 'system', content: 'You are LunAI, a helpful coding assistant.' },
+                            { role: 'user', content: `Current file: ${filename}\nCode:\n${code}\n\nUser request: ${message}\n\nIf suggesting code changes, format them clearly with the corrected code in a code block. If this is a bug fix, explain what was wrong and provide the fixed code.` }
+                        ],
+                        model: 'gpt-4o-mini'
+                    })
+                });
 
-User request: ${message}
+                if (!response.ok) throw new Error('AI request failed');
 
-If suggesting code changes, format them clearly with the corrected code in a code block.
-If this is a bug fix, explain what was wrong and provide the fixed code.`);
+                const reader = response.body.getReader();
+                const decoder = new TextDecoder();
+                let fullResponse = '';
 
-                hideTypingIndicator();
-                
-                const formattedResponse = formatAIResponse(response);
-                
-                if (isBugFix && code) {
-                    addAIMessageWithFix(formattedResponse, response);
-                } else {
-                    addAIMessage('assistant', formattedResponse);
+                while (true) {
+                    const { done, value } = await reader.read();
+                    if (done) break;
+                    fullResponse += decoder.decode(value);
+                    hideTypingIndicator();
+                    
+                    const formattedResponse = formatAIResponse(fullResponse);
+                    if (isBugFix && code) {
+                        addAIMessageWithFix(formattedResponse, fullResponse);
+                    } else {
+                        addAIMessage('assistant', formattedResponse);
+                    }
                 }
             } catch(e) {
                 hideTypingIndicator();

replit.md

@@ -28,8 +28,8 @@ The emulator is built as a single `index.html` file, containing all HTML, CSS, a
 - **LunOS Account System (LunID)**: First-party account system with secure authentication (PBKDF2-SHA256, JWT), session management, auto-login, and cloud sync for data (emails, documents, calendar, notes, files).
 - **Stream App**: Video streaming application with a custom player, multi-service support (YouTube, Dailymotion, PeerTube), unified feed, discover/clips/trending tabs, collections, and search.
 - **FynPay (Internal Wallet App)**: Internal platform currency (FYN) for LunOS, with wallet management, send/receive, earning/spending sections, and developer mode protection via Ed25519 cryptographic signatures.
-- **FynNX Assistant**: AI-powered assistant using puter.js with multiple AI models (GPT-4o, Claude, DeepSeek), featuring chat interface, web/image search, app launcher, command system, voice input (SpeechRecognition API) and text-to-speech (puter.ai.txt2speech), integration with Nexa browser for searches.
-- **LunAI Developer (dev-assistant.html)**: AI-powered bug fixer and code assistant using Puter.js. Features include: bug analysis and auto-fix, code explanation, refactoring suggestions, comment generation, cloud file storage (permanent saves to Puter cloud), multi-model AI support (Claude, GPT-4o, DeepSeek, Gemini), side-by-side code comparison, and example code with intentional bugs for testing.
+- **FynNX Assistant**: AI-powered assistant using OpenAI API with multi-key rotation and gpt-4o-mini, featuring chat interface, web/image search, app launcher, command system, voice input (SpeechRecognition API) and text-to-speech (Web Speech API), integration with Nexa browser for searches.
+- **LunAI Developer (dev-assistant.html)**: AI-powered bug fixer and code assistant using OpenAI API. Features include: bug analysis and auto-fix, code explanation, refactoring suggestions, comment generation, cloud file storage, multi-key rotation, side-by-side code comparison, and example code with intentional bugs for testing.
 
 **Real Browser API Integrations**:
 - Battery API, Network Information API, Geolocation API, Notifications API, Web Audio API, Vibration API, Storage API, Web Bluetooth API, Screen Wake Lock API, Device Motion/Orientation API, Fullscreen API, Web Share API, Picture-in-Picture API, Gamepad API, Clipboard API, Screen Orientation API.

requirements.txt

@@ -16,3 +16,4 @@ huggingface_hub
 pandas
 pyarrow
 openai
+openai