What's Changed:
- Added AI-friendly markdown mode, fence strategy selection, and large-file prompt options with configurable head/tail sampling.
- Implemented markdown fence upgrade, AI headers/range handling, and head/tail sampling logic (including presets/custom counts) with protective behavior for non-markdown formats.
- Documented new settings and behaviors; bumped version to 1.2.0 and expanded tests for fence/AI/large-file flows and custom sampling.
Full Changelog: v1.1.1...v1.2.0