chore: add changeset for weekly coverage report workflow

Author: claude

.changeset/missing-gray-antelope.md

@@ -0,0 +1,12 @@
+---
+"@inkeep/agents-cli": patch
+"@inkeep/agents-core": patch
+"@inkeep/agents-manage-api": patch
+"@inkeep/agents-manage-ui": patch
+"@inkeep/agents-run-api": patch
+"@inkeep/agents-sdk": patch
+"@inkeep/create-agents": patch
+"@inkeep/ai-sdk-provider": patch
+---
+
+Add weekly code coverage report GitHub Action workflow