Status: PASS / BROKER_CHAIN_PINNED / DEPLOY_DISABLED / PRODUCTION_NO_GO

Implementation: R2_DEPLOYER_CONTROLLER_V3_3_BROKER_CHAIN_PINNED.

Required broker: R2_GITHUB_APP_CUSTODY_BROKER_V1_1_EXACT_SCOPE. Required authorizer: DEDICATED_R2_AUTHORIZER_V3_3_BROKER_CHAIN_PINNED with signed receipt schema rumbo-r2-dedicated-authorizer-consumption/v3.3.

The deployer rejects stale broker or authorizer implementations, uses only broker-issued JIT GitHub App installation tokens, and retains exact repository scope and permissions. Direct R2_GITHUB_APP_TOKEN custody is retired.

All execution gates remain fail-closed: signed observer-linked merge authority, current main equals bound base, exact PR head, strict native enforcement, actual independent approved-review fulfillment, exact head SHA merge, post-merge main readback, and explicit deploy enablement.

Validation evaluation: 01a04beb-2836-753b-bbc8-59ef9ae52934 — PASS.

Fixture authorizer receipt SHA-256: 380ca77d19c6b998e3afa72e13cd7bdc72addcc24f7f9419503ddd0ad7fb80d0.

Static source audit: PASS across broker pinning, authorizer anti-downgrade, no direct token environment path, no durable installation-token persistence, strict native/review checks, exact merge binding and post-merge readback.

R2_ALLOW_DEPLOY remains false/absent; broker custody remains pending; production_go=false.