feat: registries open their boxes to foreign reads at create

Bumps [github.com/labstack/echo/v4](https://github.com/labstack/echo) from 4.13.3 to 4.15.3.
- [Release notes](https://github.com/labstack/echo/releases)
- [Changelog](https://github.com/labstack/echo/blob/v4.15.3/CHANGELOG.md)
- [Commits](https://github.com/labstack/echo/compare/v4.13.3...v4.15.3)

---
updated-dependencies:
- dependency-name: github.com/labstack/echo/v4
  dependency-version: 4.15.3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Both registries fund their children rather than themselves, and neither a vote
nor a delegation carries a payment from the caller — so an underfunded registry
does not fail loudly, it just starts rejecting them. This panel on /manage is
the early warning: what each registry must be able to supply, against what it
holds, with a turnout slider on the voting term.

The arithmetic lives in lib/mbrEstimate.ts as pure functions over already-fetched
data, so scripts/check-mbr-estimate.ts can pin the composition the frontend has
no test runner for (chunk rounding, the delegation terms, per-instance folding).
The box-size formula itself moves to ggov-sdk's voteRecordMbr and is pinned
against the compiled ARC-56 specs in boxNames.spec.ts.

Two things the estimate gets right that a simpler reading would not:

- A period counts when it is *ready* and not yet ended. A ready period whose
  window is still ahead has to be funded before it opens; an unready one is a
  draft whose ballot, committee and window can all still change.
- Delegation is charged against two disjoint populations. setVotingAccount
  admits a delegator either registry knows — ensureDelegatorRegistered falls
  back to the frac registry, because an AQ holder may have no gGov committee
  membership — and the gGov registry pays the same box pair either way. So the
  panel splits gGov accounts from frac-only ones over address *sets*: anyone on
  both registries is counted once, and a frac-only delegator is no longer
  subtracted from the gGov count.

feat: AVM v13 — computed program pages and one-shot bytecode upload

build(deps): update algosdk requirement from ^3.6.0 to ^3.7.0