diff --git a/crates/aibridge/src/context.rs b/crates/aibridge/src/context.rs
index ca55afe..4cd4de1 100644
--- a/crates/aibridge/src/context.rs
+++ b/crates/aibridge/src/context.rs
@@ -13,12 +13,9 @@
 use std::collections::HashMap;
 use std::sync::OnceLock;
 
-/// Rough token count. `chars / 4` ceiling. See module docs for why
-/// this heuristic is sufficient.
-#[deprecated(note = "Use shared::model_matrix::ModelMatrix::estimate_tokens instead")]
-pub fn estimate_tokens(text: &str) -> usize {
-    (text.chars().count() + 3) / 4
-}
+// `estimate_tokens` moved to `shared::model_matrix::ModelMatrix::estimate_tokens`
+// (cdc24d8). All callers migrated; the deprecated wrapper that stood in its
+// place has been removed since it had zero external consumers.
 
 /// Phase 21 — per-model context windows, mirroring the TS table in
 /// `tests/multi-agent/agent.ts`. Anchored on each model's documented