Collections Phase 2: Virtual Collections

Define collections by query instead of folder path.

Scope

`source: query` in `__collection.yaml` or collection entry metadata

Filter operators: `entry_type`, `tags` (any/all), `date` (range), `kb_name`, `status`, field comparisons

Sort: by any field, ascending/descending

Limit: max entries returned

`GET /api/collections/{id}/entries` evaluates the query and returns matching entries

Query cached with TTL (configurable, default 60s) to avoid repeated evaluation

Query validation: reject invalid field names, unsupported operators

Collection creation UI: form to define query filters

Live preview: shows matching entries as filters are adjusted

Virtual collections appear alongside folder collections in navigation

`pyrite collections list` — list all collections with entry counts

`pyrite collections query "type:backlog_item status:proposed"` — ad-hoc query

Collections Phase 1 (foundation)