diff --git a/conductor/product-guidelines.md b/conductor/product-guidelines.md
index 8a2d13dc..6a055b6b 100644
--- a/conductor/product-guidelines.md
+++ b/conductor/product-guidelines.md
@@ -82,14 +82,13 @@ function. The audit script `scripts/audit_optional_in_3_files.py` enforces
 this rule by failing CI on new `Optional[X]` return types in the 3
 refactored files.
 
-### Public API deprecation: `ai_client.send()` → `ai_client.send_result()`
+### Public API: `ai_client.send_result()` (RESOLVED 2026-06-15)
 
-The public `ai_client.send()` is marked `@deprecated` (via
-`typing_extensions.deprecated`). It still works for backward compat but
-emits a `DeprecationWarning` at runtime. New code MUST use
-`ai_client.send_result()`, which returns `Result[str, ErrorInfo]` instead
-of `str`. Removal is planned in the follow-up
-`public_api_migration_20260606` track.
+The public `ai_client.send_result()` is the canonical public API. It
+returns `Result[str, ErrorInfo]`. The legacy `ai_client.send()` was
+removed in the `public_api_migration_and_ui_polish_20260615` track on
+2026-06-15 (see `conductor/tracks/public_api_migration_and_ui_polish_20260615/spec.md`).
+All production call sites and tests now use `send_result()`.
 
 </new_content>
 ## Testing Requirements