fix: replace litellm with unclecode-litellm due to PyPI supply chain compromise

litellm 1.82.7-1.82.8 on PyPI were compromised with malicious code.
PyPI quarantined the entire package (all versions uninstallable).
Switched to unclecode-litellm==1.81.13, a pre-compromise fork published
under our own PyPI account. Drop-in replacement — all imports unchanged.

Author: unclecode

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
     "aiosqlite~=0.20",
     "anyio>=4.0.0",
     "lxml~=5.3",
-    "litellm @ git+https://github.com/unclecode/litellm.git@safe-v1.81.13",
+    "unclecode-litellm==1.81.13",
     "numpy>=1.26.0,<3",
     "pillow>=10.4",
     "playwright>=1.49.0",

requirements.txt

@@ -5,7 +5,7 @@ aiohttp>=3.11.11
 aiosqlite~=0.20
 anyio>=4.0.0
 lxml~=5.3
-litellm @ git+https://github.com/unclecode/litellm.git@safe-v1.81.13
+unclecode-litellm==1.81.13
 numpy>=1.26.0,<3
 pillow>=10.4
 playwright>=1.49.0