feat(task-board): kanban feature parity — columns, automation, tags, comments, attachments, sprints, releases, activity

[rafavalls]

Summary

Brings the task board to parity with the Jira / ai-services-panel kanban. The default board is unchanged — the original 5 columns, with sprints and releases off. Every new capability is additive and either opt-in per org (board settings) or hidden until it has data to show.

What's new

• Custom columns + per-column automation — orgs can define their own columns, each mapped onto the canonical 8-stage lifecycle (triage → todo → in progress → in review → QA → ready for release → deploy → done) so run-driven status automation keeps working. A column can auto-run an agent when a task enters it.
• Tags / labels — Linear-style label picker in the task dialog, colored-dot chips on cards, and a tag filter.
• Comments — threaded comments with inline replies and per-comment file attachments.
• Attachments — image thumbnails (with a keyboard-navigable lightbox) + a download list, on tasks and comments.
• Sprints — system-defined calendar weeks: you pick a week per task and filter the board by it. Nothing to create or name.
• Releases — a trailing board column where each release renders as a card grouping the tasks stamped with it (ai-services-panel's "a release is a card of its shipped issues").
• Activity feed — a unified timeline merging status/assignee/sprint changes, agent sessions, and comments; plus a Links panel (related PRs with live GitHub state and an "Edit" button that opens the branch's live preview, alongside links parsed from the description).

Scope

51 files, +~6.0k / −180.

• Backend — 3 migrations (task-board features, item seq, activity); 6 new MCP tools (comments, attachments, activity, sprints, releases, column-automation) plus updates to create / update / enqueue-super-agent / run-reactions / schema; 1 new attachments route.
• Web — task-board layout (config / index / task-dialog / task-filters), 3 new hooks, and a board-settings view + route.
• Shared — task-board-columns resolver (+ unit test), the 8-stage status enum, the org-settings schema, and regenerated tool contracts.
• e2e — a task-board-features spec.

Settings & lifecycle safety

• Default board = the existing 5 columns; sprints and releases are off by default. Custom columns / sprints / releases are opt-in per org via board settings.
• New persisted state (columns, sprint week, release, comments, attachments) ships create + update + delete together.

Testing

• bun run check (tsc, all workspaces), bun run lint, bun run fmt — clean.
• bun test task-board (shared columns + api tools) — 47 pass / 0 fail.
• Rebased cleanly onto the latest main; our migrations were renumbered to 146–148 after main's new 145-user-model-preferences.

Note for reviewers

This is a large single commit spanning backend + web. If you'd prefer, it can be split into reviewable PRs (backend tools + migrations first, then the web UI) — happy to do that.

🤖 Generated with Claude Code

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Summary by cubic

Adds kanban feature parity to the task board: custom columns with entry automation, tags, comments with attachments, sprints, releases, and a unified activity feed. The default board is unchanged; all new capabilities are opt-in per org in board settings.

• New Features

  • Custom columns mapped to an 8-stage lifecycle (triage → todo → in progress → in review → QA → ready for release → deploy → done), with per-column agent automation on entry (loop-safe).
  • Tags with a label picker and tag filter; colored chips on cards.
  • Threaded comments and attachments with thumbnails/lightbox; bytes served via GET /api/:org/task-board/attachments/:id.
  • Sprints and Releases (release cards group stamped tasks); activity feed combines item changes with PR links.
  • Better delegation feedback: when assigning to the Super Agent, enqueue errors are surfaced to users.
  • Board settings (/$org/settings/board) to manage columns and automation, toggle sprints/releases, and enable sequential task keys #NN.

• Migration

  • Adds 3 migrations: task-board features, per-org task seq with backfill, and activity log.
  • No breaking changes — existing boards stay the same; features are opt-in.
  • Adoption: open /$org/settings/board to customize columns or enable sprints/releases.

^{Written for commit a818d8d. Summary will update on new commits.}