v0.16.0

• let a finished run outvote its cancelled twin in a commit's CI status
• open a matrix leg's own log from the run graph
• fold diff hunks, the same unit ] and [ step through
• describe za on any line and the algorithm switch report
• fold the block around the cursor with za, and say what an algorithm switch changed
• fold both sides of a change inside a test and count the changes it hides
• state what put_run does without a contrast
• describe the re-diff holding the refresh slot
• pin which languages count as layout-significant
• match git2's hunk heading rule for histogram and structural hunks
• name diff algorithms in one match and serialize through it
• fix stale cursor, rows and snapshots in the algorithm re-diff
• regenerate showcase screenshots
• align fold rows, reformat rows, pickers, figures and the activity bar with their siblings
• describe jj, hunk headings and the off-thread rediff as they are now
• write docs and comments affirmatively, drop stale refactor leftovers
• move jj push/pull and checkout policy behind the Vcs trait, drop VcsKind
• isolate the jj test fixture from the developer's own jj config
• group the agent-activity fields into one tracker that owns its expiry
• re-diff off the ui thread on an algorithm switch, and share the model-swap tail
• unify diff settings behind one DiffSettings value, no more constructor explosion
• make layout-significant a field on the language entry, not a parallel name list
• give histogram and structural hunks their function context header
• resolve a fold row's hidden lines through one function for yank, search matching, and the search jump
• add DiffLine::number_on and use it everywhere the old-or-new line number was spelled out
• extract the shared band-line helper fold_row and hunk_header both draw
• share one mermaid statement iterator and header classifier across parsers
• make width decisions in the graph text figures and status bar display-width based
• collapse the theme and diff-algorithm pickers into one choice modal
• fold and unfold regions in the diff pane
• fix hunk staging offsets and line endings, and rediff everything on an algorithm switch
• keep structural dimming off layout-significant languages and string whitespace
• add selectable line-diff algorithms: myers, minimal, patience, histogram, structural
• give the pinned-walkthrough e2e test back its return to status
• tighten the diagram guidance in dfa and publish_walkthrough
• fit sequence and callstack figures to the card width
• keep arrowheads and titles clear of subgraph outlines
• add an e2e test publishing a sequence diagram and a callstack over mcp
• teach publish_walkthrough and dfa which diagram kind fits which shape
• draw sequence and callstack figures in the walkthrough card and jump cr to their code
• add sequence diagram and callstack tree figure kinds behind a Drawing enum
• outline contiguous mermaid subgraphs and mark decision nodes with a diamond glyph
• decline push, pull, and staging in a jj repo
• verify the jj download against its sha256
• quote jj arguments and keep jj from opening an editor
• add jj backend support for colocated repos
• fix agent activity expiring mid-poll, crowding the status bar, and ignoring its config key
• show the connected agent's live activity in the status bar
• hold the diff cursor when a comment is deleted from the diff
• fold a CI matrix job's legs under a collapsible root on the run graph
• seat the diff on the comment enter was pressed on
• bind ctrl+g to edit the focused comment, reply, or field in $EDITOR
• give PR field edits a scratch file, and stop the title landing in the body
• resolve a walkthrough's PR before opening it, not just from cache
• describe the current viewed-check design, not the retired rail
• refuse deleting an agent comment a human has replied to
• give the agent delete_comment and edit_comment, refusing anything it did not write
• let a walkthrough describe whatever review is open, not just the working tree
• lead a viewed file with its check instead of railing the row
• bump the plugin so the new walkthrough guidance reaches an installed copy
• document the anchor requirement and tell dfa to check out an empty diff's real change first
• refuse a walkthrough stop whose anchor names no real file, instead of inventing an empty path
• post whole-file PR review comments on GitHub and GitLab, hold back only on Forgejo
• give the sidebar's lead cell a viewed rail for files and folded groups
• Bump astral-sh/setup-uv from 9.0.0 to 10.0.1 (#45)
• bump rmcp and 13 other deps, move MCP handshake off deprecated ServerInfo/ClientInfo

Full changelog: v0.15.0...v0.16.0