Add links-mode embed thumbnails, item metadata, and media filters

docs/webui.md

@@ -124,11 +124,15 @@ box live in Chat, not Call, and the connection stats are not chips yet.
 - **Media** and **Bot** are scope buttons beside Guild and DM. They open a full-window view below
   the header and the call strip (the shell is covered; only the header, and the call strip when it
   is visible, stay on screen). Mobile is out of scope for the media feature.
-- Media lists scraped items with kind chips (All, Images, GIFs, Videos, Audio), a source filter
-  (any, attachments, stickers, embeds), a source-channel filter built from the scrape list, a
-  channel picker with **Start links** / **Start download**, and the active scrapes with **Stop**.
-  Images and GIFs render from the cached preview when one exists, then the local file, then the
-  Discord CDN URL; videos and audio are link cards.
+- Media lists scraped items with kind chips (All, Images, GIFs, Videos, Audio) and filters for
+  source (any, attachments, stickers, embeds), source channel, poster, aspect ratio, resolution,
+  and a posted-date range (from/to). **New scrape…** opens a popup with **Server** and **Group
+  chat** tabs: servers expand into their text channels, each channel (and each group chat) has
+  **Links** and **Download** buttons, and group chats always use the puppet. **History** lists
+  each scrape with start time, duration, pages, messages, media counts, bytes, files, and previews.
+  The scrape strip shows live progress with a pulse and **Stop**. Images and GIFs render from the
+  cached preview when one exists, then the local file, then the CDN URL; videos and audio are link
+  cards with the poster and posted time in the tooltip.
 - Bot shows the slopbot connection state and the scrape queue.
 - The views are self-contained: `poc/public/media.js` and `media.css`, over the `/api/media/*`
   routes in the table below. See [media.md](media.md).
@@ -252,11 +256,12 @@ replaceable.
 | POST | `/api/audio/stop` | none | Stop speech and clear the queue |
 | POST | `/api/audio/capture` | `start` | Start or stop capture |
 | GET | `/api/transcript` | `limit?`, `sessionId?` | Sessions and captured segments |
-| GET | `/api/media` | `kind?`, `source?`, `channelId?`, `limit?`, `offset?` | Media items across every scrape, newest first. `source` is `attachment`, `sticker`, or `embed`; `channelId` filters by source channel. `localUrl`/`thumbUrl` when a file or preview exists |
+| GET | `/api/media` | `kind?`, `source?`, `channelId?`, `authorId?`, `aspect?`, `resolution?`, `after?`, `before?`, `limit?`, `offset?` | Media items across every scrape, newest first. `source` is `attachment`, `sticker`, or `embed`; `aspect` and `resolution` are the preset keys; `after`/`before` are ISO times on `posted_at`. Items carry `authorName`, `postedAt`, `width`, `height`, `aspectRatio`; `localUrl`/`thumbUrl` when a file or preview exists |
 | GET | `/api/media/:scrapeId/:itemId/file` | none | The downloaded file, content-typed from its extension |
 | GET | `/api/media/:scrapeId/:itemId/thumb` | none | The cached WebP preview |
 | GET | `/api/media/scrapes` | none | Every scrape with state and counters |
 | GET | `/api/media/status` | none | Slopbot connection state and the scrape list |
+| GET | `/api/media/authors` | none | Distinct posters across every scrape, with counts |
 | GET | `/api/media/storage` | none | Usage against the limit, per-kind sizes, `nearLimit`; marks old scrapes when over |
 | POST | `/api/media/scrape` | `channelId`, `guildId?`, `mode?`, `backend?`, `confirm?` | Start a media scrape. `backend` is `auto` (default), `slopbot`, or `puppet`. Near the limit: `409` with code `MEDIA_LIMIT` unless `confirm: true` |
 | POST | `/api/media/scrape/stop` | `id` | Stop a media scrape |