The routing decision is about reasoning capacity, not cost or provider.
Fast model (koala/qwen35-9b-fast) handles high-pass-rate calls; thinking
model (iguana/gemma4-26b) handles low-pass-rate calls. Removes the
implicit Anthropic dependency from the routing pod — both models go
through LiteLLM.
Renames: HYPERGUILD_LOCAL_MODEL → HYPERGUILD_FAST_MODEL,
HYPERGUILD_CLAUDE_MODEL → HYPERGUILD_THINKING_MODEL,
Router.LocalModel → FastModel, Router.ClaudeModel → ThinkingModel,
log decision "claude_fallback" → "thinking_fallback".
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Typed config struct and env parser for the routing pod. Kept separate
from the supervisor Config to avoid forcing routing fields onto the
supervisor and vice versa. Uses the existing envOr helper from config.go.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
