chore: add changeset for v3.21.5 patch release (#5054)

Author: mrubens

.changeset/v3.21.5.md

@@ -0,0 +1,7 @@
+---
+"roo-cline": patch
+---
+
+- Fix Qdrant URL prefix handling for QdrantClient initialization (thanks @CW-B-W!)
+- Improve LM Studio model detection to show all downloaded models (thanks @daniel-lxs!)
+- Resolve Claude Code provider JSON parsing and reasoning block display