Add Hipo treasury and hGRAM jetton

[behrang]

Adds Hipo, the liquid staking protocol on TON: the treasury (pool) contract EQCLyZHP4Xe8fpchQz76O-_RmUhaVc_9BAoGyJrwJrcbz2eZ and the hGRAM jetton master EQDPdq8xjAhytYqfGSX8KcFWIReCufsB9Wdg0pLlYSO_h76w, following the pool + jetton pattern used by the other liquid staking protocols in validators.yaml. npm test passes (all yaml valid, 728 addresses checked). Submitted by the Hipo team.

🤖 Generated with Claude Code

[behrang]

Gentle ping — small YAML-only addition (Hipo treasury as a pool, hGRAM as a jetton), no code changes. Happy to adjust the format or naming if anything doesn't match your conventions.

[behrang]

Second ping, three weeks in — no urgency.

Still a nine-line YAML addition, no code: the Hipo treasury as a pool and hGRAM as a jetton. Happy to adjust naming or formatting to match your conventions, or to split the pool and the jetton into separate PRs if that is easier to take.

[behrang]

Third ping, five weeks in.

Still a nine-line YAML addition, no code: the Hipo treasury as a pool and hGRAM as a jetton. It's mergeable, but shows as blocked pending a review.

Happy to split the pool and the jetton into separate PRs, or adjust naming/format to your conventions. If there's a better route for address-book submissions than a PR, point me at it and I'll use that instead.