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>

obsidian_dev/compose.yaml

@@ -0,0 +1,18 @@
+services:
+  obsidian:
+    image: ${OBSIDIAN_IMAGE:-lscr.io/linuxserver/obsidian:latest}
+    restart: ${OBSIDIAN_RESTART:-unless-stopped}
+    volumes:
+      - ${VOL_PATH:-/data}/obsidian/config:/config
+    environment:
+      - TZ=${TZ:-America/Vancouver}
+      - PUID=${OBSIDIAN_PUID:-1000}
+      - PGID=${OBSIDIAN_PGID:-1000}
+    ports:
+      - ${OBSIDIAN_PORT:-3000}:3000
+    networks:
+      - proxy
+
+networks:
+  proxy:
+    external: true