docs(branches): clarify main branch credential field behavior in get help

[avallete]

Summary

Updated the help documentation for the branches get command in both the TypeScript CLI and Go CLI to clarify behavior regarding password-dependent fields when retrieving the main branch details.

Key Changes

• TypeScript CLI (apps/cli/src/legacy/commands/branches/get/get.command.ts): Extended the command description to include a note explaining that password-dependent fields (POSTGRES_URL, POSTGRES_URL_NON_POOLING) are not populated for the main branch because production database credentials are not retrievable via API.
• Go CLI (apps/cli-go/cmd/branches.go): Added the same clarification note to the Long help text of the branchGetCmd command.

Implementation Details

• The note is appended to the existing command descriptions with proper formatting (double newline for separation)
• The documentation change applies consistently across both CLI implementations to ensure users get the same information regardless of which CLI they use
• This helps prevent confusion when users query the main branch and don't see expected database credential fields in the response

https://claude.ai/code/session_019SsgQZhkBLT6xWJRcm68Ef

[coveralls]

Coverage Report for CI Build 25677206632

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Coverage: 63.722%

Details

• Patch coverage: No coverable lines changed in this PR.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

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Coverage Stats

Relevant Lines:	15679
Covered Lines:	9991
Line Coverage:	63.72%
Coverage Strength:	7.06 hits per line

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💛 - Coveralls