InnerLight OS is a verification-constrained execution runtime for AI systems. Its job is to decide what is allowed to become real. It does not generate responses or route messages. It enforces a single structural constraint: only states that are admissible at the moment of evaluation may execute, persist, or influence future behavior. InnerLight is not a prompt framework, a guardrail layer, or a behavioral safety filter. It is a structural runtime — either a state satisfies the admissibility contract at construction time, or it does not exist. As of 2026-04-07, InnerLight OS is governance-complete. Governance-complete means no path exists for invalid state to be constructed, represented, transmitted, or admitted at any boundary of the system. This is verified across six dimensions: Execution enforcement — Three non-bypassable bind points gate every dispatch path. Denial produces a named, externally observable artifact. No host-specific path bypasses enforcement. Upstream formation — Construction gates enforce admissibility at the moment an object is built. Missing provenance, missing authority, or a broken chain means the object cannot be constructed. No partial state. No deferred validation. Persistence governance — Memory tiers have authority contracts. Derived artifact authority is tracked. Nothing persists without clearing the same admissibility requirement that governs execution. Ingestion closure — Six enumerated queue entry paths, all gated. The ingestion path registry serves simultaneously as the enforcement list and the closure proof. External grounding — Claims entering from outside the system must trace to a canonical origin. Immutable input capture preserves exact content at ingress. Input drift is detectable. Cross-system composability — The admissibility contract travels with state across system boundaries. Composable systems cannot silently inherit invalid state. The system also provides: causal tracing across 8 agent-layer stages per turn, deterministic recovery via a governed state machine, session compression that preserves the append-only memory invariant, and a fully automated distribution pipeline across three host runpacks (GPT, Claude, Grok). Evidence basis: 121 closed tickets (WQ-084–204) · 958 passing tests · zero open items · zero regressions · QA-validated and truth-keeper-verified before closure. The system does not claim to prevent all failures. It claims four things, each verifiable: every failure is observable, every recovery is deterministic, every authority claim is traceable, and no state transition can bypass enforcement.