Infrastructure: Implement master/dev/vX branching, save git path, and fix username casing

backend/ai/claude.py

@@ -0,0 +1,47 @@
+import os
+import anthropic
+import json
+import base64
+
+def extract(image_bytes: bytes, prompt: str):
+    api_key = os.environ.get("CLAUDE_API_KEY")
+    if not api_key:
+        return None
+
+    client = anthropic.Anthropic(api_key=api_key)
+    base64_image = base64.b64encode(image_bytes).decode('utf-8')
+    
+    # 2026 Target models
+    models_to_try = ["claude-3-5-haiku-latest", "claude-3-5-sonnet-latest"]
+
+    for model_name in models_to_try:
+        try:
+            print(f"Claude Attempt: {model_name}")
+            message = client.messages.create(
+                model=model_name,
+                max_tokens=1024,
+                messages=[{
+                    "role": "user",
+                    "content": [
+                        {
+                            "type": "image",
+                            "source": {
+                                "type": "base64",
+                                "media_type": "image/jpeg",
+                                "data": base64_image,
+                            },
+                        },
+                        {"type": "text", "text": prompt}
+                    ],
+                }]
+            )
+            text = message.content[0].text.strip()
+            
+            if "```json" in text:
+                text = text.split("```json")[1].split("```")[0].strip()
+            
+            return json.loads(text)
+        except Exception as e:
+            print(f"Claude {model_name} failed: {e}")
+            continue
+    return None