restoration of b-2-iv and fixes into c-1-i

requirements.txt

@@ -0,0 +1,17 @@
+annotated-types==0.7.0
+anyio==4.12.1
+certifi==2026.2.25
+h11==0.16.0
+httpcore==1.0.9
+httpx==0.28.1
+idna==3.11
+markdown-it-py==4.0.0
+mdurl==0.1.2
+ollama==0.6.1
+pydantic==2.12.5
+pydantic_core==2.41.5
+Pygments==2.19.2
+rich==14.3.3
+termcharts==1.1.2
+typing-inspection==0.4.2
+typing_extensions==4.15.0