chore: adopt Enbox 0.8.30 live sync

[LiranCohen]

Summary

• update the synchronized Enbox dependency set to agent@0.8.30, api@0.6.68, auth@0.6.76, browser@0.3.60, and protocols@0.2.95
• explicitly configure AuthManager for live sync while leaving the settle-check interval unset so the SDK owns its default recovery cadence
• remove the unused wallet-level sync interval and its stale test, and document that the wallet does not run polling or one-shot sync loops
• pick up the 0.8.30 live-pull, mailbox/recovery, and sync-correctness fixes plus the updated browser wallet directory

Behavior notes

• no storage or data migration is required
• no additional network timer or high-frequency reconciliation is introduced
• identity sync remains scoped to the wallet-owned protocol set

Test plan

• bun install --frozen-lockfile
• bun run lint (0 errors; 144 pre-existing warnings)
• bunx tsc --noEmit
• bun run test -- src/enbox/__tests__/provider.test.tsx (10 passed)
• bun run test:coverage (752 passed, 10 skipped)
• bun run build
• bunx playwright test --config playwright.local.config.ts (28 passed against an isolated local port; temporary config not committed)

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🟢	Lines	68.85% (🎯 25%)	3451 / 5012
🟢	Statements	66.82% (🎯 25%)	3648 / 5459
🟢	Functions	65.23% (🎯 30%)	1051 / 1611
🟢	Branches	62.88% (🎯 29%)	2284 / 3632

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/enbox/auth-effects.ts	28.57%	18.18%	37.03%	28.57%	21-64, 80-135
src/lib/constants.ts	100%	100%	100%	100%

Generated in workflow #423 for commit 811e82a by the Vitest Coverage Report Action