catalog: re-pin wanderer to the current upstream shape, retire plant-it, add the resolvability gate

wanderer: ghcr.io/flomp/wanderer:0.16.0 is a ghost - upstream split the app
into web+db images, moved registry and renamed the org. Restructured to
upstream's own v0.20.0 compose (3 services, new /data/plugins volume, second
public hostname for PocketBase, meilisearch pinned DOWN to upstream's v1.36.0
per the R-42 ruling).

plant-it: retired. The repo name was wrong (plant-it-server) but upstream has
DELETED self-hosting; last server image is 2024-12-10 and it needs MySQL+Redis
the template never had. Moved to retired/ rather than deleted - reversible.

R-41 slice 1: check-image-resolvable.py. Encodes two traps - manifest inspect
exits 0 while printing toomanyrequests, and the inverse, where the first sweep
called 24 of 65 pins dead because Hub throttled it. Ambiguity is INCONCLUSIVE,
never an accusation.

templates/wanderer/.felhom.yml

@@ -11,8 +11,8 @@ slug: "wanderer"
 
 # --- Resource hints (displayed on deploy screen) ---
 resources:
-  mem_request: "100M"
-  mem_limit: "384M"
+  mem_request: "350M"
+  mem_limit: "1024M"
   pi_compatible: true
   needs_hdd: false
 
@@ -32,16 +32,30 @@ deploy_fields:
     locked_after_deploy: true
     description: "Az alkalmazás aldomainje"
 
+  - env_var: SUBDOMAIN_DB
+    label: "Adatbázis aldomain"
+    type: subdomain
+    default: "hike-db"
+    required: true
+    locked_after_deploy: true
+    description: "A PocketBase adatbázis aldomainje - a böngésző KÖZVETLENÜL ezt hívja, ezért saját nevet kap"
+
   - env_var: MEILI_MASTER_KEY
     label: "Keresőmotor kulcs"
     type: secret
     generate: "hex:16"
     locked_after_deploy: true
 
+  - env_var: POCKETBASE_ENCRYPTION_KEY
+    label: "Adatbázis titkosítási kulcs"
+    type: secret
+    generate: "hex:16"
+    locked_after_deploy: true
+
 # --- App info (info page content) ---
 app_info:
   tagline: "Túra tervező - útvonalak, GPX nyomok és domborzati térképek"
-  docs_url: "https://github.com/Flomp/wanderer"
+  docs_url: "https://wanderer.to/"
 
   use_cases:
     - 'Túra útvonalak tervezése és mentése'