Enhance documentation for Flakestorm V2 features, including detailed updates on behavioral contracts, context attacks, and scoring mechanisms. Added new configuration options for state isolation in agents, clarified context attack types, and improved the contract report generation with suggested actions for failures. Updated various guides to reflect the latest changes in chaos engineering capabilities and replay regression functionalities.

docs/IMPLEMENTATION_CHECKLIST.md

@@ -109,6 +109,26 @@ This document tracks the implementation progress of flakestorm - The Agent Relia
 
 ### Phase 5: V2 Features (Week 5-7)
 
+#### Environment Chaos & Context Attacks
+- [x] ChaosConfig (tool_faults, llm_faults, context_attacks as list or dict)
+- [x] ChaosInterceptor: memory_poisoning applied to input before invoke; LLM faults (timeout before call, others after)
+- [x] context_attacks: indirect_injection, memory_poisoning (strategy prepend/append/replace), normalize_context_attacks
+- [x] Per-scenario context_attacks in contract.chaos_matrix
+
+#### Behavioral Contracts
+- [x] ContractEngine: (invariant × scenario) cells with optional reset (reset_endpoint / reset_function)
+- [x] system_prompt_leak_probe via contract invariant `probes`; behavior_unchanged with baseline auto/manual
+- [x] Stateful detection and warning when no reset configured
+
+#### Replay Regression
+- [x] ReplaySessionConfig with `file` (load from file) or inline id/input; validation require id+input when no file
+- [x] ReplayConfig.sources (LangSmith project or run_id) with auto_import
+
+#### Scoring & Config
+- [x] ScoringConfig (mutation, chaos, contract, replay) weights must sum to 1.0
+- [x] AgentConfig.reset_endpoint, reset_function; ModelConfig api_key env-only
+- [x] Mutation count max 50 (OSS); 22+ mutation types
+
 #### HuggingFace Integration
 - [x] Create HuggingFaceModelProvider
 - [x] Support GGUF model downloading