Release 1.2.27 with alchemy GIL fix

Author: larock22

CHANGELOG.md

@@ -9,6 +9,11 @@ This project uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Added
 
+## [1.2.27] - 2026-03-25
+
+### Fixed
+- Restored GIL release while the Rust `_alchemy` binding blocks waiting for streamed events and final results, fixing Python scheduling stalls introduced by the re-integrated in-repo binding.
+
 ## [1.2.26] - 2026-03-24
 
 ### Fixed

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "tiny-agent-os"
-version = "1.2.26"
+version = "1.2.27"
 description = "Python agent loop"
 readme = "README.md"
 requires-python = ">=3.10"

rust/src/lib.rs

@@ -256,12 +256,17 @@ impl StreamHandle {
             elapsed_ms(self.opened_at),
         );
 
-        let next = self
-            .event_rx
-            .lock()
-            .map_err(|_| PyRuntimeError::new_err("event stream lock poisoned"))?
-            .recv()
-            .map_err(|_| PyRuntimeError::new_err("event stream closed unexpectedly"))?;
+        let next = py
+            .detach(|| {
+                let receiver = self
+                    .event_rx
+                    .lock()
+                    .map_err(|_| "event stream lock poisoned".to_string())?;
+                receiver
+                    .recv()
+                    .map_err(|_| "event stream closed unexpectedly".to_string())
+            })
+            .map_err(PyRuntimeError::new_err)?;
 
         binding_debug!(
             self.stream_id,
@@ -310,9 +315,13 @@ impl StreamHandle {
             elapsed_ms(self.opened_at),
         );
 
-        let value = receiver
-            .recv()
-            .map_err(|_| PyRuntimeError::new_err("result channel closed unexpectedly"))?
+        let value = py
+            .detach(move || {
+                receiver
+                    .recv()
+                    .map_err(|_| "result channel closed unexpectedly".to_string())
+            })
+            .map_err(PyRuntimeError::new_err)?
             .map_err(PyRuntimeError::new_err)?;
 
         binding_debug!(