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>

mariadb_dev/README.md

@@ -7,7 +7,65 @@ Proxy Port: 3306
 It will be quite uncommon to just use this compose file, it's likely you are extending this from another project.
 That's the main context of this container.
 
-## Sample 
+## Overview
+
+Standalone MariaDB database server for stacks that need shared SQL.
+
+## Project Details
+
+-   **Container Image:** [mariadb:latest](https://hub.docker.com/_/mariadb)
+-   **Reverse Proxy Port:** `3306`
+
+## Getting Started
+
+1. Start the container: `docker compose up -d`
+2. Open http://localhost:3306 in your browser
+3. Follow the initial setup wizard to configure the application
+
+## Environment Variable Notes
+
+    MARIADB_DATABASE – default: mydb
+    MARIADB_ROOT_PASSWORD – default: ChangeThisPassword
+    MARIADB_USER – default: dbuser
+    MARIADB_PASSWORD – default: ChangeThisPassword
+    MARIADB_PORT – default: 3306
+
+## Volume Notes
+
+    /var/lib/mysql – host path /data/mariadb
+
+## Network Notes
+
+Requires proxy network
+
+## Docker Run
+
+```bash
+docker run -d \
+  --name mariadb \
+  -p 3306:3306 \
+  -v /data/mariadb:/var/lib/mysql \
+  mariadb:latest
+```
+
+See compose.yaml for the full set of environment variables.
+
+## Additional Notes / Gotchas
+
+Other stacks include their own database; this stack is for a shared or standalone instance.
+
+## Dockhand Stack, Deploy from Git
+
+Cookbooks Repository
+stackname: mariadb_dev
+Compose file path: mariadb_dev/compose.yaml
+Additional env file (optional): mariadb_dev/sample.env
+
+Then "Load" mariadb_dev/sample.env into the Environmental variables in dockhand
+
+Create the Stack
+
+## Sample
 
 ### Run multiple databases 
 
@@ -37,4 +95,4 @@ command: --max_allowed_packet=32505856
 command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW --innodb-file-per-table=1 --skip-innodb-read-only-compressed
 # nextcloud
 command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
-```
+```