Route NFO log analysis through public SubLLM

[tom-sapletta-com]

Summary

• replace the default LiteLLM call with public subactor-subllm 1.4.2
• use the exact semcod-nfo/analyze route with direct Z.AI GLM 5.3 priority
• retain LiteLLM only as an explicit llm-legacy extra and environment opt-in
• never replay a failed SubLLM request to another paid provider
• align CI with supported Python 3.11 through 3.13

Closes #1.

Validation

• 341 tests passed
• focused Ruff passed
• git diff --check passed
• sdist and wheel build passed