Fix Bulletin allowance parsing

[charlesHetterich]

Summary

• parse current Bulletin authorization extent fields as allowance - used remaining quota
• use the normalized remaining quota in deploy preflight and init attestation display
• add direct unit coverage for current transactions_allowance / bytes_allowance semantics, zero-usage allowance, over-consumed clamp, and rejecting legacy-shaped extents
• add a patch changeset

Verification

• pnpm vitest run src/utils/account/authorizationExtent.test.ts src/utils/account/allowance.test.ts src/utils/account/attestation.test.ts
• npx tsc --noEmit
• pnpm test
• pnpm format:check

Context

The current Bulletin runtime reports transactions / bytes as used quota and transactions_allowance / bytes_allowance as the granted totals. The CLI was treating the used counters as remaining quota, which caused active authorizations with zero usage to look exhausted during deploy preflight. This PR intentionally targets the current runtime shape only.

[github-actions]

Dev build ready — try this branch:

curl -fsSL https://raw.githubusercontent.com/paritytech/playground-cli/main/install.sh | VERSION=dev/fix/bulletin-allowance bash

[github-actions]

E2E Test Pass · ✅ PASS

Tag: e2e-ci-pr · Branch: fix/bulletin-allowance · Commit: cc05428 · Run logs

Cell	Result	Time
pr-init-session	✅ PASS	1m48s
${{ matrix.cell }}	⏭️ SKIP	-17m-40s
${{ matrix.cell }}	⏭️ SKIP	-17m-40s
pr-deploy-foundry	✅ PASS	2m37s
pr-preflight	✅ PASS	2m36s
pr-deploy-frontend	✅ PASS	8m52s
pr-install	✅ PASS	0m48s
pr-mod	✅ PASS	1m32s
pr-deploy-cdm	✅ PASS	3m34s

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