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>

poste_dev/README.md

@@ -2,3 +2,65 @@
 
 [Documentation](https://poste.io/doc/)
 
+## Overview
+
+All-in-one mail server: SMTP, IMAP, webmail, antispam, and admin UI.
+
+## Project Details
+
+-   **Container Image:** [analogic/poste.io:latest](https://hub.docker.com/r/analogic/poste.io)
+-   **Reverse Proxy Port:** `25`
+
+## Getting Started
+
+1. Start the container: `docker compose up -d`
+2. Open http://localhost:25 in your browser
+3. Follow the initial setup wizard to configure the application
+
+## Environment Variable Notes
+
+    POSTE_HOSTNAME – default: mail.yourdomain.com
+    POSTE_SMTP_PORT – default: 25
+    POSTE_POP3_PORT – default: 110
+    POSTE_IMAP_PORT – default: 143
+    POSTE_SUBMISSION_PORT – default: 587
+    POSTE_IMAPS_PORT – default: 993
+    POSTE_POP3S_PORT – default: 995
+    POSTE_SIEVE_PORT – default: 4190
+
+## Volume Notes
+
+    /data – host path /data/poste
+
+## Network Notes
+
+Requires proxy network
+
+## Docker Run
+
+```bash
+docker run -d \
+  --name poste \
+  -p 25:25 \
+  -p 110:110 \
+  -p 143:143 \
+  -v /data/poste:/data \
+  analogic/poste.io: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: poste_dev
+Compose file path: poste_dev/compose.yaml
+Additional env file (optional): poste_dev/sample.env
+
+Then "Load" poste_dev/sample.env into the Environmental variables in dockhand
+
+Create the Stack