First behavior-preserving slice of the Maven redesign. Establishes
explicit ingress/routing boundaries and enough observability to refactor
later without changing current routing, action, clarification, or
execution semantics.
Types introduced:
- NormalizedInput (internal/router/source.go): Text + InputSource,
the typed ingress boundary replacing raw string at the turn entry.
- InputSource (internal/router/source.go): channel provenance enum
(tap:voice, tap:text). Reuses the existing turnSource distinction.
- RouteProducer (internal/router/intent.go): which cascade stage
produced the decision (grammar, heads, llm, classifier).
Changes:
- Decision carries a Producer RouteProducer field, set at each cascade
stage (grammar, heads, LLM, classifier).
- turnRoute carries NormalizedInput instead of bare text string.
- runTurn takes NormalizedInput instead of (text, src).
- decision.Record carries InputSource and RouteProducer for
observability; RoutingTrace persists route_producer (migration #27).
- turnSource is now a type alias for router.InputSource.
Behavior preserved:
- Stage-0 grammars unchanged: same order, same matching, same confidence.
- Cascade fallthrough order unchanged (grammar → heads → llm → classifier).
- Clarification behavior unchanged.
- Action dispatch unchanged.
- No new linguistic normalization.
claude
87a3b163e7