- Mocked stdout rows for the AgentTranscriptViewer tests to ensure consistent terminal height.
- Added an afterEach cleanup to restore the original property descriptor for process.stdout.rows.
- Standardized elision markers across all tool outputs and filters to use cohesive `[...N [type] elided...]`, `[...Nln elided...]`, and `[...xB elided...]` syntax.
- Updated documentation, prompts, and test expectations to reflect the unified elision format.
- Improved transcript viewer robustness by preventing content aliasing through path-inclusive signature hashing.
- Added logic to clear stale transcript content when associated session files are deleted, accompanied by verifying test cases.
- Fixed an alignment issue where the transcript body was incorrectly offset by an extra gutter column relative to the "Agent Hub" title.
- Updated the transcript renderer to omit the redundant outer gutter and ensure file-mention rows include the standard 1-column left pad.
- Added regression tests to verify consistent gutter alignment and correct scroll behavior.