Document durable Genesis DM image proof

[rita-aga]

Summary

• records the production Genesis ref repair for Paw DM image generation
• captures the deployed image, runtime WASM hashes, Discord DM image E2E proof, and final Discord transport cleanup
• documents follow-ups for the paw-media Genesis repo binding and Railway image source deploy path

Verification

• Production is running ghcr.io/nerdsane/temperpaw:sha-5c3c05f on deployment 4abe83cc-f9cd-4cc8-9504-bc1529b55b9e
• Production /readyz is 200 with Discord connection_state: Connected, last_error: null, next_retry_at: null
• Production runtime WASM hashes match the refreshed Genesis bundles
• Discord DM proof completed with image attachment fl-019edb08-317b-7530-af93-efbae72c1ff5

Linear: ARN-61