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pad/internal/store/migrations/016_timeline.sql
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xarmian 998716ae49 feat: unified item timeline with comment-on-update, threading, and reactions (#54)
* feat: unified item timeline with comment-on-update, threading, and reactions (IDEA-115)

Replace the separate Comments section and Version History modal on the
item detail page with a single chronological timeline that interleaves
comments, activities, and content versions.

Key changes:
- Add --comment flag to `pad item update` so agents/users can explain
  status changes inline (creates a comment linked to the activity)
- Add threaded replies (parent_id on comments) with inline reply UI
- Add emoji reactions on comments (new comment_reactions table)
- New /timeline API endpoint merges comments, activities, and versions
  server-side with dedup and collapsing of rapid edits
- New Svelte timeline components: ItemTimeline, TimelineCommentCard,
  TimelineActivityCard, TimelineVersionCard, ReactionPicker
- Remove Implementation Notes and Decision Log inputs from web UI
- Update skill docs to encourage --comment on status changes

* fix: address review findings for PR #54 (iteration 1)

- Use ListItemVersions instead of ListVersions in timeline endpoint
  so item content history renders correctly
- Add workspace validation to reply and reaction handlers to prevent
  cross-workspace comment mutation
- Raise activity cap from 500 to 10000 to avoid silently truncating
  long timelines
- Fix toggleReaction to always POST (idempotent) instead of incorrectly
  matching other users' reactions for DELETE
- Await onReply promise before clearing draft to prevent duplicate
  submissions and lost drafts on failure
- Register reaction_added/reaction_removed in SSE ITEM_EVENTS so
  reactions from other sessions appear in real-time

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: address review findings for PR #54 (iteration 2)

- Fix nil pointer dereference in timeline handler when item not found
- Store empty string instead of NULL for reaction user_id so UNIQUE
  constraint works correctly in SQLite
- Add workspace validation to handleDeleteComment (cross-workspace
  deletion was possible)
- Fix SKILL.md duplicate numbering (4. appeared twice)
- Remove || true debug artifacts from reaction conditionals
- Replace SvelteMap with plain Map in non-reactive groupReactions
- Use != null checks for timeline API params to handle offset=0
- Log warning on comment creation failure during item update

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>
2026-04-03 07:25:56 -04:00

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SQL

-- Timeline: link comments to activities, threading, and reactions
-- Link comments to the activity that triggered them (e.g. status-change comments)
ALTER TABLE comments ADD COLUMN activity_id TEXT REFERENCES activities(id);
-- Threading: allow comments to be replies to other comments
ALTER TABLE comments ADD COLUMN parent_id TEXT REFERENCES comments(id);
CREATE INDEX IF NOT EXISTS idx_comments_parent ON comments(parent_id);
CREATE INDEX IF NOT EXISTS idx_comments_activity ON comments(activity_id);
-- Emoji reactions on comments
CREATE TABLE IF NOT EXISTS comment_reactions (
id TEXT PRIMARY KEY,
comment_id TEXT NOT NULL REFERENCES comments(id) ON DELETE CASCADE,
user_id TEXT REFERENCES users(id),
actor TEXT NOT NULL DEFAULT 'user',
emoji TEXT NOT NULL,
created_at TEXT NOT NULL,
UNIQUE(comment_id, user_id, emoji)
);
CREATE INDEX IF NOT EXISTS idx_comment_reactions_comment ON comment_reactions(comment_id);