feat(cli): expand API command coverage

[chronark]

What does this PR do?

Expands unkey api coverage with commands for apps, deployments, environments, gateway policies, portal sessions, and projects. Updates existing API commands to support typed --body input, JSON-backed domain flags, current SDK request types, and consistent output behavior.

Adds generic mutually exclusive CLI flags so each command can expose --body directly while rejecting combinations with request-building flags. Authentication, API URL, configuration, and output flags remain available in body mode.

Updates command documentation, navigation, generator guidance, and the SDK dependency.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Chore (refactoring code, technical debt, workflow improvements)
• Enhancement (small improvements)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How should this be tested?

• Run mise exec -- rask ./pkg/cli ./cmd/api/...
• Run mise run build
• Verify unkey api <group> <command> --help shows request flags as mutually exclusive with --body
• Verify an explicit JSON body reaches a local test server while mixed body/request flags fail before the request

Checklist

Required

• Filled out the "How to test" section in this PR
• Read Internal Workflow Guide
• Self-reviewed the changes
• Commented on hard-to-understand behavior
• Ran pnpm build (not applicable)
• Ran pnpm fmt (not applicable)
• Ran mise run fmt
• Checked for warnings, there are none
• Removed all console.logs
• Merged the latest changes from main onto the branch
• The changes don't cause responsiveness issues

Appreciated

• If a UI change was made: Added a screen recording or screenshots to this PR (not applicable)
• Updated the Unkey Docs where necessary

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[socket-security]

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Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	golang/​github.com/​unkeyed/​sdks/​api/​go/​v2@​v2.6.1 ⏵ v2.7.1	-9

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