add 23 requested stacks from container-requests list

Tdarr, Grocy, Dashy, Traefik, Fider, Twenty CRM, Outline, Chatwoot,
ComfyUI, Picard, VoidAuth, Tinyauth, Tugtainer, Sencho, Authelia,
Mail Archiver, ITFlow, Notifuse, Maybe Finance, DumbBudget, Silverpeas,
Portus, Obsidian — all as _dev stacks following repo conventions.

Harbor and Exportify moved to 'Apps That Will Not be in the Repo'
(installer-generated compose / no published image).

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

mailarchiver_dev/README.md

@@ -0,0 +1,57 @@
+# Mail Archiver
+
+## Overview
+
+Self-hosted email archiving, search, and export tool with multi-account folder sync.
+
+## Project Details
+
+-   **Project Repository:** [GitHub](https://github.com/s1t5/mail-archiver)
+-   **Container Image:** [s1t5/mailarchiver](https://hub.docker.com/r/s1t5/mailarchiver)
+-   **Documentation:** [Setup docs](https://github.com/s1t5/mail-archiver/blob/main/doc/Setup.md)
+-   **Reverse Proxy Port:** `5000`
+
+## Getting Started
+
+1. Start the container: `docker compose up -d`
+2. Open http://localhost:5000 in your browser
+3. Follow the initial setup wizard to configure the application
+
+## Environment Variable Notes
+
+    MAILARCHIVER_USERNAME / MAILARCHIVER_PASSWORD – web UI admin login
+    MAILARCHIVER_DB_PASSWORD – must match in both the app connection string and postgres
+
+## Volume Notes
+
+    /var/lib/postgresql/data – PostgreSQL data (the archive itself)
+
+## Network Notes
+
+Requires proxy network
+
+## Docker Run
+
+```bash
+docker run -d \
+  --name mailarchiver \
+  -p 5000:5000 \
+  -e 'ConnectionStrings__DefaultConnection=Host=dbhost;Database=MailArchiver;Username=mailuser;Password=pass' \
+  -e Authentication__Username=admin -e Authentication__Password=pass \
+  s1t5/mailarchiver:latest
+```
+
+## Additional Notes / Gotchas
+
+No built-in HTTPS — keep behind the reverse proxy. Add mail accounts through the web UI after first login.
+
+## Dockhand Stack, Deploy from Git
+
+Cookbooks Repository
+stackname: mailarchiver_dev
+Compose file path: mailarchiver_dev/compose.yaml
+Additional env file (optional): mailarchiver_dev/sample.env
+
+Then "Load" mailarchiver_dev/sample.env into the Environmental variables in dockhand
+
+Create the Stack