fix(deploy): stay within Actions expression limit

[JOY (JOY)]

Summary

• remove GitHub expressions from the oversized Mainnet and Testnet SSH run blocks
• bind each remote apply step to the exact archive uploaded by the current runner
• preserve the deployment ID for backups, runtime probes, and cache busting

Evidence

• GitHub workflow dispatch failed with HTTP 422: exceeded max expression length 21000 at the Mainnet run block
• independent reviewer approved the exact archive binding and shell quoting
• actionlint
• environment parity validation
• Mainnet and Testnet Compose validation
• git diff --check

[chatgpt-codex-connector]

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