[Bug] httpx missing from requirements.txt - quick_start.md demo_agent fails on clean install

[sumaiya1303]

Environment

• chimeraforge: latest (pip install chimeraforge[all])
• Python: 3.14.0, OS: Windows 11, Ollama: 0.30.11
• Repo: fresh clone of main branch

Steps to Reproduce

Followed docs/quick_start.md exactly:

1. git clone https://github.com/Sahil170595/Chimeraforge.git
2. cd Chimeraforge
3. python -m venv venv
4. venv\Scripts\activate
5. pip install -r requirements.txt
6. python src/python/banterhearts/demo_agent/run_demo.py --model gemma3:latest --runs 3

Expected

Demo runs and produces benchmark output as documented in docs/quick_start.md.

Actual

Step 6 fails immediately with:

ModuleNotFoundError: No module named 'httpx'
File "src\python\banterhearts\demo_agent\agents\chimera_agent.py", line 8
import httpx

Root Cause - Confirmed

httpx is imported directly in src/python/banterhearts/demo_agent/agents/chimera_agent.py at line 8.

Running findstr /i "httpx" requirements.txt returns no output - httpx is completely absent from requirements.txt.

pip install -r requirements.txt therefore never installs it, making Step 6 fail on every clean install.

Impact

This blocks the very first command any new contributor or user runs after following the quick start guide. The demo cannot make a single API call to Ollama without httpx - it is a hard runtime dependency, not optional.

Suggested Fix

Add httpx to requirements.txt with a version pin:

httpx>=0.27.0

Also recommend auditing all direct imports across src/python/banterhearts/ against requirements.txt to catch any additional missing dependencies in the same pass.