Add Custom Step button in tree navigation #9
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Block a user
Delete Branch "%!s()"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
Add ability to insert custom steps during active troubleshooting:
Reference: PHASE-2.5-PERSONAL-BRANCHING.md
All checklist items implemented: Custom Step button in TreeNavigationPage, modal integration, session-only insertion, purple visual indicator, export support.