…de layout

This update adds a GuardeX pre-edit guard path in pre-commit so Codex sessions attempting to commit from protected branches are explicitly redirected to sandbox sub-branches via scripts/codex-agent.sh. It also makes unborn-branch detection stable so first-commit repos still behave correctly for non-Codex bootstrap commits.\n\nREADME now embeds the exact real VS Code Source Control screenshot and labels the layout with the GuardeX naming.

Constraint: User requires local preferred branch stability with Codex isolated to sub-branches

Constraint: Existing setup flow must remain compatible with fresh repos before first commit

Rejected: Rely on generic protected-branch error only | did not give Codex-specific GuardeX remediation path

Confidence: high

Scope-risk: moderate

Reversibility: clean

Directive: Keep templates/githooks/pre-commit and .githooks/pre-commit behavior in sync

Tested: npm test (48/48 pass); node --check bin/multiagent-safety.js

Not-tested: Remote PR merge path in GitHub UI