SRE: auto-apply patches on import (add sre_patches import to __init__)

purpose_agent/__init__.py

@@ -3,11 +3,15 @@ purpose_agent — A local-first self-improvement kernel for agents.
 
 v3.0 features: event runtime, durable execution, memory homeostasis,
 protocol interop, intelligent routing, skill evolution, agentic optimization,
-AND first-principles engineering (O(1) critic, falsification scoring, PEP 578 sandbox).
+first-principles engineering (O(1) critic, falsification scoring, PEP 578 sandbox),
+AND SRE hardening (5 critical patches auto-applied).
 """
 
 __version__ = "3.0.0a1"
 
+# ── SRE Patches (auto-apply on import) ───────────────────────────────────
+import purpose_agent.sre_patches  # noqa: F401 — patches Actor, MemoryStore, ExperienceReplay, Trajectory
+
 # ── Core ──────────────────────────────────────────────────────────────────
 from purpose_agent.types import (
     State, Action, Trajectory, TrajectoryStep,
@@ -23,10 +27,15 @@ from purpose_agent.experience_replay import ExperienceReplay
 from purpose_agent.optimizer import HeuristicOptimizer
 from purpose_agent.orchestrator import Orchestrator, Environment, SimpleEnvironment, TaskResult
 
-# ── First-Principles (NEW) ───────────────────────────────────────────────
+# ── First-Principles ─────────────────────────────────────────────────────
 from purpose_agent.state_delta import compute_state_delta, StateDelta, format_critic_input
 from purpose_agent.falsification_critic import FalsificationCritic, FalsificationResult
 from purpose_agent.sandbox_hooks import install_sandbox, SandboxPolicy, SandboxViolation, is_sandbox_installed
+from purpose_agent.hardening import (
+    safe_params, safe_string, safe_float, safe_dict_get,
+    with_timeout, llm_call_with_timeout, graceful,
+    validate_purpose, ValidationError,
+)
 
 # ── V2 Kernel ─────────────────────────────────────────────────────────────
 from purpose_agent.v2_types import RunMode, MemoryScope, PurposeScoreV2
@@ -106,10 +115,13 @@ __all__ = [
     "OpenAICompatibleBackend", "ChatMessage", "resolve_backend",
     "Actor", "PurposeFunction", "ExperienceReplay", "HeuristicOptimizer",
     "Orchestrator", "Environment", "SimpleEnvironment", "TaskResult",
-    # First-Principles
+    # First-Principles + Hardening
     "compute_state_delta", "StateDelta", "format_critic_input",
     "FalsificationCritic", "FalsificationResult",
     "install_sandbox", "SandboxPolicy", "SandboxViolation", "is_sandbox_installed",
+    "safe_params", "safe_string", "safe_float", "safe_dict_get",
+    "with_timeout", "llm_call_with_timeout", "graceful",
+    "validate_purpose", "ValidationError",
     # V2 Kernel
     "RunMode", "MemoryScope", "PurposeScoreV2",
     "Trace", "TraceEvent",