Fix Outlines library version pinning for V4 API compatibility

Problem:
- requirements.txt allowed any Outlines version >=0.0.34
- Latest version (1.2.9) has breaking API changes
- V4 code uses old API: outlines.generate.json()
- New API has no generate module, causing import failures

Solution:
- Pin to outlines>=0.0.34,<0.1.0
- Ensures old API compatibility
- Prevents automatic upgrade to 1.x versions

Tested:
- Version 0.0.44 confirmed working locally
- Has outlines.generate.json() method
- Compatible with existing V4 code

This fix will enable V4 JSON streaming endpoint on HuggingFace Spaces.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

requirements.txt

@@ -20,7 +20,7 @@ accelerate>=0.33.0,<1.0.0  # Required for GPU quantization (V4)
 bitsandbytes>=0.44.0  # 4-bit NF4 quantization for GPU (V4)
 einops>=0.6.0,<1.0.0  # Required for model architecture (V4)
 scipy>=1.10.0,<2.0.0  # Often needed for unquantized models (V4)
-outlines>=0.0.34  # JSON schema enforcement for V4 structured summarization (requires Python 3.10+)
+outlines>=0.0.34,<0.1.0  # JSON schema enforcement for V4 structured summarization (requires Python 3.10+, pin to 0.0.x for API compatibility)
 
 # Testing
 pytest>=7.0.0,<8.0.0