Add a single-value post_type field on posts (enum: feature, bug, tweak). Friendlier vocabulary than the engineering-jargon alternatives (no story/epic/issue). Surfaces as a small coloured pill on cards and a filter on every list/board/roadmap. Default to feature when unset (covers the vast majority of incoming requests).

Migration adds the column nullable (existing posts stay untyped); UI lets admin bulk-tag from feedback list; submit form gets a small selector with help-text examples. NOT a hierarchy, NOT a workflow gate - purely a label that improves filtering and visualisation.