v0.31.0

Features

• Board multi-select marking (t1243_6): Press Space on the board to mark cards with a checkbox glyph, building a selection that survives navigation and is pruned automatically when tasks disappear.
• Bulk move to column (t1243_7): A new m key and command-palette entry moves every marked task to a column you pick, with a review dialog and a stale-selection guard.
• Headless board columns (t1377_1): Board column reads and moves are now available from a standalone command, so scripts and agents can query or change a task's column without opening the board TUI, and --boardcol values are validated everywhere.

Bug Fixes

• Silent task-data sync failures (t1269): Syncing task data now reports when a pull or push actually failed instead of always claiming success, with a specific reason and recovery hint per failure class — including a missing upstream.
• gate pass missing from help (t1270): ait --help now lists the gate pass subcommand alongside the rest of the gate family.
• By-Trail misses a new trail (t1365): The board's By-Trail view now sees trails created while the board is open, warns about trail files it can't read, and renders a newly activated trail's members as real cards.
• Trail selector focus and scrolling (t1366): The trail picker — and every other picker dialog on the board — now shows a visible focus highlight and scrolls the focused row into view.
• Silent lock-cleanup failures (t1370): Stale-lock cleanup during task pick now reports why it failed and what the consequence is, instead of swallowing the error and exiting successfully.
• Torn frontmatter writes (t1371): Frontmatter patches are written atomically, so a concurrent reader can never see a half-written task file.
• Torn task-file writes (t1379): The shell-side task, plan, gate-witness and issue-import writers are atomic too, preserving file mode and never leaving a truncated file behind.
• Setup leaves a broken environment (t1374): A failed optional pip install during ait setup no longer leaves a half-built venv; setup degrades in clear escalating steps and tells you what to do.
• ait lock list on an empty branch (t1378): Listing locks no longer aborts when the task-data branch has no lock files, and incomplete lock records show unknown fields instead of being dropped.
• Resume drift and plan-approval gaps (t1380): Resuming an in-flight task now runs the same branch-resolution and drift checks as a fresh run, and records plan approval on every stop path.
• Renamed agent windows (t1382): Companion panes are classified correctly even after a window is renamed, and the minimonitor groups non-agent panes under an "other" section instead of hiding them.
• Stale human gate signatures (t1409): A human gate signed before later code changes is now detected as stale — archive readiness reports it as blocked instead of accepting an out-of-date signature.
• Installer aborts silently (t1414): A fresh-directory install no longer ends silently partway through — the upgrade-changelog step can no longer terminate the installer with a stray exit status.

Improvements

• Board gap indexing (t1243_3): Moving a card no longer renumbers a whole column — a move rewrites one file instead of several, so concurrent board edits stop fighting each other.
• No-verifier warning in the parse contract (t1272): The task workflow now warns when a gate can't be verified because no verifier or registry entry is configured, in both the interactive and autonomous lanes.
• Shared shadow helpers (t1289): The minimonitor's duplicate shadow wrappers were removed so both monitors run exactly the same shadow capture and formatting code.
• Concern parse diagnostics (t1293): When a shadow concern block can't be parsed, u opens the raw text that was lost, and the dialog adapts down to very narrow terminals.
• Shadow self-binding (t1319): The shadow's capture step resolves its own target pane instead of taking it as an argument, and refuses to act when it is unbound or on another tmux server.
• Minimonitor mark for the followed agent (t1383): Space in the minimonitor now marks the agent you are following whatever card has focus, and the docked panel shows its mark state live.
• Multi-row footer (t1418): TUI footers wrap onto several rows instead of hiding shortcuts, so every board operation is discoverable; the row cap is configurable via footer_max_rows.
• Inline risk mitigations (t1419): Risk mitigations chosen during planning can now be inlined as pre- or post-phases of the plan itself instead of always becoming follow-up tasks, with a per-mitigation prompt, reconciliation of already-created tasks, and a stop signal when a blocking mitigation is unfinished.
• Trail drift covers more edges (t1429): Trail refresh now detects drift from risk_mitigation_tasks and verifies relations, including tasks that point at a trail member from the outside.
• Shared record protocol (t1433): The delimited-record encoding used by the work-report and board-column tools moved into one shared module, so sanitizing and record-breaking checks behave identically everywhere.

Documentation

• Docs gaps since v0.30.0 (t1432): Documented board marking and bulk move, the monitor's concern picker, and the parallel Python test lane across the board, monitor and development doc pages.

Performance

• Scoped board filtering (t1243_4): Board search and filtering touch only the columns that changed and reuse a cached search string per task, so typing in the filter stays responsive on large boards.
• Card moves without a rebuild (t1243_5): Moving a card between columns transplants the existing widget instead of recomposing the board.
• Batch moves scale linearly (t1369): Moving many marked tasks to a column computes the whole run of positions from one scan instead of rescanning per task.
• Board test fixture migration (t1354_2): The remaining board test modules moved onto the shared fixture, replacing self-skipping tests with real assertions.
• Parallel test lane (t1354_3): ait setup --with-dev installs an optional pytest tier, after which the Python suite runs across parallel workers with a small serial carve-out.
• Load-aware worker count (t1354_4): The parallel test lane picks its worker count from the machine's load instead of a fixed default, backed by a full measurement campaign.
• Board move cost attribution (t1395): The board's movement profiler gained nested span attribution to pin down what remains of a card move's cost; board behaviour is unchanged.

Tests

• Concern display contract guard (t1294): A new guard pins which concern fields each display surface reads, so one surface can't silently diverge from the others.
• Inherited-test duplication guard (t1384): A new structural guard catches test classes that re-run an inherited suite, which was inflating collection counts.