A Discourse-style forum for Solid pods — categories, topics, and threaded replies, stored as JSON-LD you own. One self-contained app, no build step.

Sister to forum (which is Discord-style — realtime chat channels). discuss is the long-form, threaded side: read a category, open a topic, follow the thread.

Sign in with xlogin — Solid-OIDC (WebID) or nostr.

Shared-pod, multi-user: one pod hosts the forum, any authenticated user can post. The forum lives on the signed-in user's pod — resolved from the WebID's pim:storage (falling back to the WebID origin) — so the app works whether it's served from the pod itself or from somewhere else (e.g. github.io).

/public/discuss/index.jsonld                     forum meta + category list
/public/discuss/c/<cat>/<topicId>/topic.jsonld   the opening post
/public/discuss/c/<cat>/<topicId>/<postId>.jsonld one file per reply (append-only)
/public/discuss/c/<cat>/<topicId>/like_<target>_<user>.jsonld  one file per like
/public/discuss/.acl                             owner Control; AuthenticatedAgent Append

One file per reply means many people can post concurrently without overwriting each other — the container just collects everyone's docs.

MVP complete — full read/write on a pod. Built in phases:

• 1. Scaffold — light-theme Discourse layout, three views (Categories → Topics → Topic thread) over hardcoded sample data, hash router.
• 2. Auth — xlogin wired up; header shows identity (avatar + name + sign-out).
• 3. Categories — categories read from /public/discuss/index.jsonld; a fresh forum is seeded (index + .acl + a welcome topic) on the owner's first visit. Opened without a writable pod (e.g. github.io, signed out) it falls back to a read-only demo.
• 4. Topics — per-category container; topic list + inline New topic form that PUTs c/<cat>/<topicId>/topic.jsonld.
• 5. Replies — topic thread reads every reply doc in the container and renders them chronologically; the composer PUTs one JSON-LD schema:Comment per reply (append-only).
• 6. Polish — relative activity times; per-post likes (append-only schema:LikeAction docs, one file per user per post, toggle = PUT/DELETE); new/unread badges on the topic list (tracked in localStorage by reply count, no extra fetches).
• 7. Power features
  • Edit / delete your own posts — author-gated (compares schema:author to your WebID); edits stamp schema:dateModified; deleting an OP removes the whole topic.
  • Markdown in post bodies — bold, italic, code, fenced blocks, links (http/https only), blockquotes, lists, headings, @mentions. Escape-first renderer, no injection.
  • Last activity + last poster per topic row (one extra fetch of the newest reply, found via time-sortable filenames).
  • Quote any post → prefills the composer with an attributed blockquote.
  • Category management — create / rename / recolor categories from the UI (writes index.jsonld).

Static — open index.html, or install to a pod (e.g. /public/apps/discuss/). The app data (/public/discuss/) is independent of where the app code is installed.

AGPL-3.0-or-later