[2026-05-27] wiki curation: multi-host cron topology, media pipeline pitfalls, watchlist automation updates

wiki/tech/media-pipeline-pitfalls.md

@@ -1,11 +1,13 @@
 ---
 title: Media Pipeline Pitfalls
 created: '2026-05-23'
-updated: '2026-05-23'
+updated: '2026-05-27'
 type: tech
 namespace: family
 tags: [media-pipeline, pitfalls, torrents, infra]
-related: "[[arr-stack-kraken]]"
+related:
+  - "[[tech/arr-stack-kraken]]"
+  - "[[concepts/watchlist-automation]]"
 ---
 
 # Media Pipeline Pitfalls
@@ -26,6 +28,30 @@ rename. Sequence:
 2. Call `torrent-set-location` with the new path + `move=false`
 3. Verify torrent goes back to seeding state
 
+## Router Creates Subdirectories — Transmission downloadDir Stale
+
+`router.py` creates subdirectory per title under the genre folder
+(lowercase name, e.g. `/media/cartoons/бобик в гостях у барбоса/`).
+Transmission still holds the old `downloadDir` pointing to the parent
+(`/media/cartoons/`). Result: torrents show "No data found" error.
+
+Fix:
+1. Find the actual subdirectory on disk
+2. Call `torrent-set-location` with the subdirectory path + `move=false`
+3. Transmission verifies and resumes seeding
+
+## Alpine Container — No Docker-in-Docker
+
+`on-download-complete.sh` runs inside the Transmission Alpine container.
+Docker CLI is not available there — using `docker run` inside the container
+fails silently or errors. Python 3.14 IS available in the Alpine image.
+
+Solution: `sync.py` (Python3, ~190 lines) in the same container:
+- Reads `config.json` for sorting rules + credentials (same file as linker container)
+- Queries TMDB for genre routing
+- Creates hardlinks + calls Transmission RPC `torrent-set-location`
+Location: `/srv/dev-disk-by-uuid-49e8f586-3839-4c5d-a1e1-58bfc3579ade/docker/media-pipeline/sync.py`
+
 ## General Rules
 
 - Never touch source files/folders (media-pipeline USER.md rule)

wiki/tech/vps-qentra.md

@@ -1,7 +1,7 @@
 ---
 title: VPS qentra.top
 created: '2026-05-24'
-updated: '2026-05-25'
+updated: '2026-05-27'
 type: tech
 namespace: personal
 tags: [infra, vps]