feat(simulation): voice pipeline integration — Factual bypass, observer wiring, tell iteration (#650 #652 #651)

ContentType::Factual bypasses LLM for fact-bearing lines (numbers,
denials). Observer enrichment systems rewrite dialogue/conversation
text with voiced versions before snapshot assembly. Friendly and
RoutineDeviation tells get concrete surface-pattern examples.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/voice/mod.rs

@@ -14,6 +14,7 @@
 
 pub mod cache;
 pub mod hardware;
+pub mod integration;
 pub mod lookup;
 pub mod prompt_builder;
 pub mod queue;