v0.9.4

Changed

• New review rounds focus the first visible thread, in file and display order, with a reply added by another author since the previous submission. The thread expands and scrolls to its latest new reply, including resolved threads and file comments. Without a new reply, or when resuming an unfinished round, the starting position is unchanged. [ / ] navigation is unchanged.
• File tabs show both added and deleted line counts, such as (+12 -5), omitting zero counts.
• Syntax highlighting reuses the lexer, style, and formatter within each file, substantially reducing startup time for diffs with many deleted lines while preserving rendered output.
• Refactored TUI internals and consolidated overlapping tests without changing their intended behavior.