complete all stack READMEs to the 9-section template

Existing content preserved and reordered to the canonical section order;
missing sections generated from each stack's compose data (ports, volumes,
env vars, image links). Fixes copy-paste errors in Dockhand sections
(qbittorrent pointed at archivebox; invokeai/thunderbird said SERVICENAME)
and persistant->persistent typos in gatus.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

jellyfin_dev/README.md

@@ -11,3 +11,64 @@
 * 8920/tcp is used by default for HTTPS traffic. You can change this in the dashboard.
 * 1900/udp is used for service auto-discovery. This is not configurable.
 * 7359/udp is also used for auto-discovery. This is not configurable.
+
+## Project Details
+
+-   **Container Image:** [jellyfin/jellyfin:latest](https://hub.docker.com/r/jellyfin/jellyfin)
+-   **Reverse Proxy Port:** `8096`
+
+## Getting Started
+
+1. Start the container: `docker compose up -d`
+2. Open http://localhost:8096 in your browser
+3. Follow the initial setup wizard to configure the application
+
+## Environment Variable Notes
+
+    JELLYFIN_URL – default: http://localhost:8096
+    JELLYFIN_PORT – default: 8096
+
+## Volume Notes
+
+    /cache – host path /data/jellyfin/cache
+    /config – host path /data/jellyfin/config
+    /books – host path /data/jellyfin/media/books
+    /movies – host path /data/jellyfin/media/movies
+    /music – host path /data/jellyfin/media/music
+    /photos – host path /data/jellyfin/media/photos
+    /shows – host path /data/jellyfin/media/shows
+
+## Network Notes
+
+Requires proxy network
+
+## Docker Run
+
+```bash
+docker run -d \
+  --name jellyfin \
+  -p 8096:8096 \
+  -v /data/jellyfin/cache:/cache \
+  -v /data/jellyfin/config:/config \
+  -v /data/jellyfin/media/books:/books \
+  -v /data/jellyfin/media/movies:/movies \
+  -v /data/jellyfin/media/music:/music \
+  jellyfin/jellyfin:latest
+```
+
+See compose.yaml for the full set of environment variables.
+
+## Additional Notes / Gotchas
+
+Nothing specific to this stack so far.
+
+## Dockhand Stack, Deploy from Git
+
+Cookbooks Repository
+stackname: jellyfin_dev
+Compose file path: jellyfin_dev/compose.yaml
+Additional env file (optional): jellyfin_dev/sample.env
+
+Then "Load" jellyfin_dev/sample.env into the Environmental variables in dockhand
+
+Create the Stack