Modified the agents plan tree command to display full 26-character ULIDs
instead of truncating them to 8 characters. This enables users to copy
decision IDs directly from the tree output and use them in follow-up
CLI commands without manual ID reconstruction.
Key changes:
- Removed [:8] truncation from all decision ID displays (table, tree)
- Updated table column width from 8 to 26 characters for full ULID display
- Removed [...] truncation from plan ID in tree title
- Added 'Decision IDs (for correction)' section listing all decision ULIDs
with human-readable labels for easy reference
- Supports both rich (with panel) and plain text formatting
- Helper function _get_decision_label() generates appropriate labels
based on decision type
- Updated CHANGELOG.md per CONTRIBUTING.md requirements
ISSUES CLOSED: #5825
CoreRasurae
