Initial release: Multi-provider AI chat with RAG

FastAPI backend (wiki-vector-chat.py) with Odysseus-style frontend.
Features: multi-provider LLM, Wiki KB + VectorDB RAG, session history,
chat modes, save-to-wiki, markdown rendering, SSE streaming.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

wiki-chat-proxy.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+"""Wiki Chat Proxy - Proxies chat requests to z.ai GLM-4-Plus"""
+
+import json
+import os
+import urllib.request
+
+ZAI_TOKEN = os.environ.get('ZAI_API_TOKEN', '')
+
+def handler(event):
+    try:
+        if event.get('method') != 'POST':
+            return {'status': 405, 'body': 'Method not allowed'}
+        
+        body = json.loads(event.get('body', '{}'))
+        messages = body.get('messages', [])
+        
+        if not messages:
+            return {'status': 400, 'body': json.dumps({'error': 'messages required'})}
+        
+        api_url = 'https://api.z.ai/api/coding/paas/v4/chat/completions'
+        
+        payload = json.dumps({
+            'model': 'glm-4-plus',
+            'messages': messages,
+            'temperature': 0.7,
+            'max_tokens': 2000,
+        }).encode()
+        
+        headers = {'Content-Type': 'application/json'}
+        if ZAI_TOKEN:
+            headers['Authorization'] = 'Bearer ' + ZAI_TOKEN
+        
+        req = urllib.request.Request(api_url, data=payload, headers=headers, method='POST')
+        
+        try:
+            with urllib.request.urlopen(req, timeout=60) as resp:
+                data = json.loads(resp.read().decode())
+                content = data.get('choices', [{}])[0].get('message', {}).get('content', '')
+                return {
+                    'status': 200,
+                    'headers': {'Content-Type': 'application/json'},
+                    'body': json.dumps({'response': content})
+                }
+        except urllib.error.HTTPError as e:
+            err_body = e.read().decode() if e.fp else ''
+            try:
+                err_json = json.loads(err_body)
+                err_msg = err_json.get('error', {}).get('message', err_json.get('message', str(e)))
+            except:
+                err_msg = str(e)
+            return {'status': e.code, 'body': json.dumps({'error': err_msg})}
+    except Exception as e:
+        return {'status': 500, 'body': json.dumps({'error': str(e)})}