Acceptance criteria

1. The user can select any text (word, phrase, sentence) and add a comment via the inline toolbar.

2. The user can click any focused block and add a comment to the whole block via the action strip.

3. Comment threads are anchored, they stay attached to their text or block even after edits nearby.

4. Multiple comments can exist on the same block without overlapping.

5. Comment counts are visible in the right margin without focusing the block.

6. Any user who joined the site can reply to a thread.

1.The user can select any text (word, phrase, sentence) and add a comment via the inline toolbar.

2. The user can click any focused block and add a comment to the whole block via the action strip.

Reader or writer selects text block

• User selects a text block → action trip appears → taps Comment

• Thread panel opens on the right anchored to the selection → user types and submits

• User selects a text block → action trip appears → taps link

• Link is copy to be pasted (a confirmation tooltip appears)

• User selects a text block → action trip appears → taps like (heart)

• A new heart is added to the block text

• User selects a text block → action trip appears → taps. 3 dots option

• Contextual options list for reader or editor appear