fix(output): render vault tokens on separate lines

[chalabi2]

Summary

• Render one token per line in vault-state pretty output, with amounts right-aligned across the section.
• Keep labels on the first token line and indent continuation lines under the value column, matching the layout requested in bug(q/bme/vault-state): each token should be on a new line when in pretty mode #99.
• Preserve token order, zero balances, readable units, and comma separators through the shared CLI/monitor renderer. JSON/YAML and compact coin output elsewhere are unchanged.
• Update the specification, design, changelog, and vault-output golden fixture.

Closes #99

Verification

• The regression test reproduces the issue's exact amounts and checks all seven token lines, right alignment, labels, zero values, and unchanged compact formatting. It failed before the fix and passes afterward.
• GOWORK=off make akt
• GOWORK=off go test ./...
• GOWORK=off golangci-lint run --timeout=10m — 0 issues.

The local suite includes offline E2E coverage. Opt-in localnet and live Console tests were not enabled.