chore(releases): add router v1.4.0 release doc

[cjcobb23]

release doc for router v1.4.0, needed for solana message id

---

Note

Adds release doc for Cosmwasm Router v1.4.0 with deployment steps, no-migration note, Solana message ID format update, and verification checklist.

• Docs: Add releases/cosmwasm/2025-10-Router-v1.4.0.md
  • Background: Router upgraded to v1.4.0; supports new Solana message ID format (old format no longer supported).
  • Deployment: Steps to upload and migrate Router to v1.4.0; no state migration required.
  • Checklist: Command to verify contract info returns {"contract":"router","version":"1.4.0"}.

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[greptile-apps]

Greptile Overview

Summary

Adds release documentation for Router v1.4.0, which upgrades the amplifier router contract to support the new Solana message ID format. The router will no longer support the old format after this upgrade.

Key changes:

• New release doc following standard format with deployment instructions
• No state migration required for this upgrade
• Includes proper verification checklist

Issue found:

• Missing --msg '{}' parameter in migrate command (should be included for consistency with other releases)

Confidence Score: 4/5

• Safe to merge with one minor command syntax fix
• Well-structured release document following established patterns. The only issue is a missing --msg '{}' parameter in the migrate command, which should be included for consistency even when no migration message is required.
• No files require special attention after fixing the migrate command

Important Files Changed

File Analysis

Filename	Score	Overview
releases/cosmwasm/2025-10-Router-v1.4.0.md	4/5	New Router v1.4.0 release doc for Solana message ID support. Missing --msg '{}' parameter in migrate command.

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant GH as GitHub
    participant CS as CosmWasm Chain
    participant Router as Router Contract
    
    Dev->>GH: Create Router v1.4.0 release
    Note over GH: router-v1.4.0 tag
    
    Dev->>CS: Upload Router v1.4.0 wasm
    Note over CS: submit-proposal.js store
    CS->>CS: Store new code ID
    
    Dev->>CS: Submit migrate proposal
    Note over CS: submit-proposal.js migrate
    CS->>Router: Upgrade to v1.4.0
    Note over Router: No state migration<br/>Supports new Solana<br/>message ID format
    
    Dev->>CS: Query contract version
    CS-->>Dev: {"contract":"router","version":"1.4.0"}
    Note over Dev: Verification complete

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