release: v0.16.4 — parallel execution safety + bug fixes#6
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johnnichev merged 1 commit intomainfrom Mar 15, 2026
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Fix 5 bugs found during deep audit: - Parallel tool execution missing coherence checks (security) - Parallel tool execution missing output screening (security) - astream() inline provider calls not tracking usage - Input guardrails mutating caller's Message objects - ask()/aask() missing parent_run_id parameter 15 new regression tests (total: 1477).
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Security: - Path traversal in JsonFileSessionStore — validate session_id (#9) - Unicode homoglyph bypass in injection screening — NFKD + zero-width strip + homoglyph map (#13) Data integrity: - FileKnowledgeStore._save_all() atomic write via tmp + os.replace (#10) - JsonFileSessionStore.save() atomic write (#31) Agent core: - astream() uses self._effective_model (was self.config.model) (#1) - Sync _check_policy rejects async confirm_action with clear error (#2) - Sync _streaming_call isinstance(chunk, str) guard (#18) Providers: - FallbackProvider stream()/astream() record success after consumption, not before — circuit breaker now works for streaming (#3) - Gemini response.text ValueError catch for tool-call-only responses (#4) Tools: - aexecute() uses run_in_executor(None) shared executor (#5) - execute() awaits coroutines from async tools via asyncio.run (#6) RAG: - Hybrid search O(n²) → O(1) via text_to_key dict lookup (#7) - SQLiteVectorStore thread safety + WAL mode (#8) Evals: - OutputEvaluator catches re.error on invalid regex (#11) - JsonValidityEvaluator respects expect_json=False (#12) 16 new regression tests. Full suite: 2000 passed.
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Summary
self.usage_prepare_run()no longer mutates caller's Message objectsparent_run_idTest plan
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