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Messages: tags — compose, display, filter, trending and autocomplete #32
Description
Summary
Tags are a first-class product feature with their own endpoints. Models/Message.cs already carries Tags, but nothing composes, renders, or filters on them.
Live verification (2026-09-15)
GET /api/tags/trending -> 200 {"tags":[{"tag":"Lego","count":2,"lastUsedAt":"..."}, ...]}
GET /api/tags/autocomplete?q=le -> 200 {"tags":[{"tag":"Lego","count":2},{"tag":"learning","count":1}]}
Both answer the bearer sync-token.
API
POST /api/messagesacceptstags: string[].GET /api/messages?tag=<tag>filters the feed by tag.GET /api/tags/trending— most-used tags on public messages in a trailing window.GET /api/tags/autocomplete?q=— case-insensitive literal prefix match.
Acceptance criteria
-
Services/InterlinedApiClient.Tags.cswithGetTrendingTagsAsyncandAutocompleteTagsAsync. - Tag input in the composer with prefix autocomplete, sent as
tags[]. - Tag chips render on feed cards and are clickable → filter the feed via
?tag=. - A trending-tags panel (right rail fits the existing shell).
- Pairs with the AI Suggest tags action — an accepted tag suggestion populates this input.
Activity
Adron commentedon Sep 16, 2026
Implemented in #155 — work continues in the PR from here.
Services/InterlinedApiClient.Tags.cscovers both endpoints, tags ride along onPOST /api/messagesastags: string[], chips on cards filter the feed via?tag=, and there is a trending bar. The panel went inside FeedView rather than the shell's right rail, sinceMainWindow.xamlis in open PR #149.Two things the live API pinned down: tags are not hashtag-shaped —
orbit cultureandlife is short, o brave girlare real tags — so the compose input splits on commas only, never whitespace; and thecountfrom trending is a different number from thecountfrom autocomplete (trailing window vs all-time), so neither is a cache of the other. Autocomplete rejects an emptyqwith a 400, so a blank query short-circuits client-side. The compose write path is built and deliberately unexercised.