Linking Tracker Items
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Tracker items can link to one another, not just to sessions and commits. A module can be the parent of its features, a plan can block another plan, a bug can duplicate another. Links are two-way: set one side and the reverse shows up on the other item on its own.
Item-to-item links are not switched on for every type by default, which is why they can be hard to find at first. A type gets them when its schema includes one or more relationship fields. Each relationship field sets:
the relationship it represents (parent of, child of, depends on, blocks, relates to, duplicates, or supersedes),
the target types it is allowed to link to, and
whether it holds a single item or many.
The example below is a custom "Feature Module" type whose schema defines three relationship fields: Parent Module (child of), Submodules (parent of), and Features (parent of, pointing at feature items).

The quickest way to add relationship fields is to ask the AI agent in Nimbalyst to edit the type's schema. For a parent/child hierarchy, tell it something like:
"For this tracker type, update the schema to support linked trackers. Make this tracker the parent of this tracker, and that one the child (a parent can have multiple children)."
Once it updates the schema, tell it which items to link to which, or let it work the links out from context. You can also edit the schema by hand under Settings → Trackers (relationship is one of the field types). See Custom Tracker Types.
With relationship fields on the type, open an item's detail panel. Each relationship field lists the items already linked as pills. Click the + on the field, type in the box to find an item by key or title, and choose it. Remove a link with the × on its pill. A field can be restricted to certain target types, so if an item you expect is missing, it may not be an allowed type for that field.
When a relationship field is paired with an inverse field on the other type, the link stays in sync on both ends. In the Feature Module example, adding an item to Submodules automatically fills that item's Parent Module field, and removing either side clears the other. This is the automatic "Linked from" backlink from the release notes. A field backlinks only when its schema names an inverse field; a one-way field records just the side you set.
These are the relationship keys a field can use, with their natural inverse:
Parent of
Child of
Depends on
Blocks
Relates to
Relates to (symmetric)
Duplicates
reference (set an inverse to backlink)
Supersedes
reference (set an inverse to backlink)
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