docs: sync cli management docs with implementation

[numnx]

Make the CLI management documentation match the parser and management command implementation.

• Sync 39 DOMAIN_ACTION_ALIASES
• Describe flag coercion (boolean/numeric/arrays)
• Describe --payload-json merge behavior
• Detail startup intercept flags vs CLI help
• Use proper CLI approval flag text.

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PR created automatically by Jules for task 3216227927186261442 started by @numnx

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