Audit git/gh wrapper scripts for completeness

[james-in-a-box]

Summary

Compare the egg container's git and gh wrapper scripts (PR #5) against jib-container's versions to ensure all operations are properly handled.

Current State

Script	jib (lines)	egg (lines)	Difference
scripts/git	810	786	-24 lines
scripts/gh	519	503	-16 lines

The differences are small but may indicate missing functionality.

Key Features to Verify

Git Wrapper

• Push with branch ownership policy
• Fetch from remote
• Pull (fetch + merge)
• Clone blocking (with helpful message)
• Init blocking
• Remote modification blocking
• Config handling (global vs local)
• Status, log, diff passthrough
• Commit, checkout, merge operations
• Error message formatting
• Session token authentication

Gh Wrapper

• PR create
• PR comment
• PR edit
• PR close
• PR merge blocking (with helpful message)
• PR view passthrough
• Issue operations
• API passthrough
• Session token authentication
• Error handling

Investigation

Run diff between the scripts:

diff ~/repos/james-in-a-box/jib-container/scripts/git \
     ~/repos/egg/container/sandbox/scripts/git  # (from PR #5)

Acceptance Criteria

• Complete audit of script differences
• Document any intentionally different behavior
• Port any missing functionality
• Ensure all error messages are helpful

Authored-by: jib