Add JSON output for remaining CLI list/status commands

[bolasse1234]

Closes #142. Related to #133.

This fills in a few CLI convention gaps where nested list/status commands only had human-readable stub output even though the docs say those commands should support --json.

What changed:

• added --json output to the remaining list/status subcommands under the primary CLI verbs
• added a command-tree test that walks �uild, config, promote, and scale so new list/status commands under those verbs keep the JSON option

Verified:

• corepack pnpm --filter @profullstack/sh1pt typecheck
• corepack pnpm vitest run packages/cli/src/input.test.ts packages/cli/src/commands/json-output.test.ts
• corepack pnpm --filter @profullstack/sh1pt-core --filter @profullstack/sh1pt-policy --filter @profullstack/sh1pt build
• smoke-tested a few commands via corepack pnpm exec tsx packages/cli/src/index.ts ... --json

I kept this intentionally small so it is easy to review and does not change the placeholder implementation behind the stubs.