feat(cli): add json-dictionary loader support

[mathio]

No description provided.

[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to d423553.

Security Overview

• 🔎 Scanned files: 6 changed file(s)

Detected Code Changes

Change Type	Relevant files
Enhancement	► loaders/index.ts     Add json-dictionary loader ► loaders/json-dictionary.ts     Implement json-dictionary loader ► loaders/json-dictionary.spec.ts     Add tests for json-dictionary loader
Configuration changes	► formats.ts     Add json-dictionary to bucket types
Other	► cmd/logout.ts     Update logout command description

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