pub fn context_snippet(
model: &DiffModel,
file: &str,
line: u32,
on_old_side: bool,
) -> Option<Vec<(char, String)>>Expand description
The anchored line plus its immediate neighbors within the same hunk,
each tagged with its diff origin char (’ ’, ‘-’, ‘+’). None when the
file or line has left the model (the comment is outdated). Shared by
the markdown export and the MCP comment payloads.