devnet health check passed, update spec tracking for run 4153

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ethvibes

docs/tasks/spec-update-alpha4.md

@@ -147,6 +147,6 @@ All PRs included in alpha.4 (since alpha.3) have been audited. No code changes n
 
 - Added fork choice proofs (tier 1): 30 theorems/lemmas covering head selection, pruning safety, Gloas 3-state payload model, reorg resistance.
 
-### Steady state (runs 3966-4151, 2026-03-29/30)
+### Steady state (runs 3966-4153, 2026-03-29/30)
 
-No new consensus-specs merges or releases since alpha.4 (Mar 27). Post-alpha.4 merges (#5051-5054) are all CI/tooling/test-infra. All open Gloas/Heze PRs unchanged: #4843 (approved/stalled since Mar 20), #4747 (FCR, 149+ reviews, mergeable_state=dirty/conflicting as of Mar 30), #5056 (approved/blocked, not merged), #4954/#4898/#4892/#4960/#4932/#4840/#4630 (stale/unreviewed). New open PRs #5055-5059 are dependency bumps, EIP-8025 refactor, and test infra — not relevant. Cargo check clean, zero clippy warnings on Rust 1.94.1. Nightly CI: all jobs passing. Devnet health check (run 4151): 4-node Gloas devnet SUCCESS — finalized_epoch=8, continuous finalization, no stalls. Codebase stable.
+No new consensus-specs merges or releases since alpha.4 (Mar 27). Post-alpha.4 merges (#5051-5054) are all CI/tooling/test-infra. All open Gloas/Heze PRs unchanged: #4843 (approved/stalled since Mar 20), #4747 (FCR, 149+ reviews, mergeable_state=dirty/conflicting as of Mar 30), #5056 (approved/blocked, not merged), #4954/#4898/#4892/#4960/#4932/#4840/#4630 (stale/unreviewed). New open PRs #5055-5059 are dependency bumps, EIP-8025 refactor, and test infra — not relevant. Cargo check clean, zero clippy warnings on Rust 1.94.1. Nightly CI: all jobs passing (nightly #36, ci #1434). cargo audit: 1 known advisory (rsa/RUSTSEC-2023-0071, transitive via jsonwebtoken, no fix available). Devnet health check (run 4153): 4-node Gloas devnet SUCCESS — finalized_epoch=8, continuous finalization, no stalls. Codebase stable.