chore: pre-migration snapshot

Layer0, MCP servers, Terraform consolidation

mcp/oracle_answer/tool.py

@@ -9,7 +9,11 @@ Separate from CLI/API wrapper for clean testability.
 
 from __future__ import annotations
 
+import asyncio
+import json
 import os
+import urllib.error
+import urllib.request
 from dataclasses import dataclass
 from typing import Any, Dict, List, Optional
 
@@ -92,12 +96,10 @@ class OracleAnswerTool:
         if self.use_local_only:
             return "Local-only mode: skipping NVIDIA API call"
 
-        if not httpx:
-            raise ImportError("httpx not installed. Install with: pip install httpx")
-
         headers = {
             "Authorization": f"Bearer {self.api_key}",
             "Accept": "application/json",
+            "Content-Type": "application/json",
         }
 
         payload = {
@@ -108,18 +110,45 @@ class OracleAnswerTool:
             "max_tokens": 1024,
         }
 
-        try:
-            async with httpx.AsyncClient() as client:
-                response = await client.post(
-                    f"{self.NVIDIA_API_BASE}/chat/completions",
-                    json=payload,
-                    headers=headers,
-                    timeout=30.0,
-                )
-                response.raise_for_status()
-                data = response.json()
+        # Prefer httpx when available; otherwise fall back to stdlib urllib to avoid extra deps.
+        if httpx:
+            try:
+                async with httpx.AsyncClient() as client:
+                    response = await client.post(
+                        f"{self.NVIDIA_API_BASE}/chat/completions",
+                        json=payload,
+                        headers=headers,
+                        timeout=30.0,
+                    )
+                    response.raise_for_status()
+                    data = response.json()
+                    return data["choices"][0]["message"]["content"]
+            except Exception as e:  # noqa: BLE001
+                return f"(API Error: {str(e)}) Falling back to local analysis..."
+
+        def _urllib_post() -> str:
+            req = urllib.request.Request(
+                url=f"{self.NVIDIA_API_BASE}/chat/completions",
+                method="POST",
+                headers=headers,
+                data=json.dumps(payload, ensure_ascii=False).encode("utf-8"),
+            )
+            try:
+                with urllib.request.urlopen(req, timeout=30) as resp:
+                    raw = resp.read().decode("utf-8", "replace")
+                data = json.loads(raw)
                 return data["choices"][0]["message"]["content"]
-        except Exception as e:
+            except urllib.error.HTTPError as e:
+                detail = ""
+                try:
+                    detail = e.read().decode("utf-8", "replace")
+                except Exception:
+                    detail = str(e)
+                raise RuntimeError(f"HTTP {e.code}: {detail}") from e
+
+        try:
+            return await asyncio.to_thread(_urllib_post)
+        except Exception as e:  # noqa: BLE001
             return f"(API Error: {str(e)}) Falling back to local analysis..."
 
     async def answer(