- Made `Component.invalidate` optional in `packages/tui/src/tui.ts` and callsites.
- Added `iconOverride` support to status-line rendering in `status-line.ts`.
- Added `borderColor` and `framedBlock()` primitives in `output-block.ts` for framed output styling.
- Adjusted `renderOutputBlock()` to draw a continuous border when no header text is present.
- Added terminal checkpoint-reconciliation tests in `submit-checkpoint-reconcile.test.ts` for pinned-tail behavior.
- Moved documentation files from packages/coding-agent/docs/ to root docs/ directory to flatten the documentation structure.
- Updated all internal documentation links to account for the new file locations, adjusting relative paths to maintain correct references across the monorepo.
- Updated README.md and issue template configuration to reference documentation at the new root docs/ location instead of packages/coding-agent/docs/.
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