diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 3543aa2..6fef1e7 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -57,6 +57,8 @@ retry delay when available, and propagates cancellation without retrying.
 
 A deterministic layer converts the approved SongProject into the final
 Suno-facing lyrics/style content. User choices override AI suggestions.
+It depends only on approved domain data and local validation; it does
+not invoke the OpenAI client or reference SwiftUI presentation code.
 
 ## Arabic Pronunciation Processor
 
diff --git a/docs/TASKS.md b/docs/TASKS.md
index af4c273..764311a 100644
--- a/docs/TASKS.md
+++ b/docs/TASKS.md
@@ -103,7 +103,7 @@ requirement is missing and blocks implementation, record it in
 -   [x] Generate style prompt from genre blend, instrumentation, vocals,
     tempo, harmony, emotion and production instructions.
 -   [x] Validate output before handoff.
--   [ ] Keep compiler independent from UI and OpenAI client.
+-   [x] Keep compiler independent from UI and OpenAI client.
 
 ## Phase 8 --- Suno Handoff