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>

sencho_dev/README.md

@@ -0,0 +1,60 @@
+# Sencho
+
+## Overview
+
+Self-hosted, multi-node Docker Compose management dashboard.
+
+## Project Details
+
+-   **Project Repository:** [GitHub](https://github.com/Studio-Saelix/sencho)
+-   **Container Image:** [saelix/sencho](https://hub.docker.com/r/saelix/sencho)
+-   **Documentation:** [docs.sencho.io](https://docs.sencho.io/)
+-   **Reverse Proxy Port:** `1852`
+
+## Getting Started
+
+1. Start the container: `docker compose up -d`
+2. Open http://localhost:1852 in your browser
+3. Follow the initial setup wizard to configure the application
+
+## Environment Variable Notes
+
+    SENCHO_COMPOSE_DIR – host directory where compose stacks live (source of truth)
+
+## Volume Notes
+
+    /data – Sencho application data
+    /compose – your compose stacks on the host filesystem
+    /var/run/docker.sock – Docker socket (required)
+
+## Network Notes
+
+Requires proxy network
+
+## Docker Run
+
+```bash
+docker run -d \
+  --name sencho \
+  -p 1852:1852 \
+  -e COMPOSE_DIR=/compose -e DATA_DIR=/data \
+  -v /data/sencho/data:/data \
+  -v /data/compose:/compose \
+  -v /var/run/docker.sock:/var/run/docker.sock \
+  saelix/sencho:latest
+```
+
+## Additional Notes / Gotchas
+
+Sencho overlaps heavily with Dockhand (the manager this repo is built around) — treat this stack as an evaluation/experiment, not a replacement.
+
+## Dockhand Stack, Deploy from Git
+
+Cookbooks Repository
+stackname: sencho_dev
+Compose file path: sencho_dev/compose.yaml
+Additional env file (optional): sencho_dev/sample.env
+
+Then "Load" sencho_dev/sample.env into the Environmental variables in dockhand
+
+Create the Stack