Added #

• Initial contracts: Composition/Component immutable graphs with validate-and-explain before side effects, typed readiness declarations (HandshakeLine, FilePresent, LogPattern, TcpConnect, ReadinessAll) with composition-declared budgets, typed OutputRef/ResolvedOutputs promises, lifecycle values (ResourceScope, CrashPolicy, IdentityRequirement), lifecycle events with terminal causes, bounded LogTap, the ResourceProvider interface with declared capabilities, CompositionRunner with reverse-order teardown that never masks the original failure, evidence sinks, and a scripted FakeProvider.