- Fixed `issue://owner/diff` and `pr://owner/diff` parsing so they resolve to issue and PR list outputs.
- Fixed `pr` short-form parsing by requiring `scheme==='pr'` and a numeric host before `diff` matching.
- Fixed PR unified-diff parsing to decode quoted header paths and count `----`/`++++` hunk lines as one deletion/addition.
- Fixed `read` error rendering to emit status blocks with cleaned, range-aware, tab-normalized lines.
- Stopped `github-cache` from chmod-ing existing parent directories, preserving pre-existing permission modes.