Read Jellyfin server and user from the environment

The helper scripts hardcoded a specific server address, account name and
device identifier, which published private deployment details in a public
repository. Both values are now required from JELLYFIN_URL and
JELLYFIN_USER, and the scripts exit with usage text when either is unset.

add_repo_check.py

@@ -1,7 +1,10 @@
-import sys, json, time, urllib.request
+import os, sys, json, time, urllib.request
-BASE="http://192.168.50.1:30013"; USER="flan"
+BASE = os.environ.get("JELLYFIN_URL")
+USER = os.environ.get("JELLYFIN_USER")
+if not BASE or not USER:
+    sys.exit("set JELLYFIN_URL and JELLYFIN_USER, e.g. JELLYFIN_URL=http://jellyfin.example:8096 JELLYFIN_USER=admin")
 MYURL="https://git.arch.fyi/flan/jellyfin-placard/raw/branch/main/manifest.json"
-H='MediaBrowser Client="poster-pin", Device="code", DeviceId="poster-pin-code-8e1f", Version="1.0"'
+H='MediaBrowser Client="poster-pin", Device="placard-tools", DeviceId="poster-pin-tools", Version="1.0"'
 def call(p,m="GET",d=None,h=None):
     r=urllib.request.Request(BASE+p,data=d,method=m,headers=h or {})
     with urllib.request.urlopen(r,timeout=30) as x:

install_official.py

@@ -1,9 +1,12 @@
-import sys, json, time, urllib.request, urllib.error
+import os, sys, json, time, urllib.request, urllib.error
 from urllib.parse import quote
-BASE="http://192.168.50.1:30013"; USER="flan"
+BASE = os.environ.get("JELLYFIN_URL")
+USER = os.environ.get("JELLYFIN_USER")
+if not BASE or not USER:
+    sys.exit("set JELLYFIN_URL and JELLYFIN_USER, e.g. JELLYFIN_URL=http://jellyfin.example:8096 JELLYFIN_USER=admin")
 GUID="b6f8e2a4-1c3d-4e5f-9a7b-2d4c6e8f0a1b"
 MYURL="https://git.arch.fyi/flan/jellyfin-placard/raw/branch/main/manifest.json"
-H='MediaBrowser Client="poster-pin", Device="code", DeviceId="poster-pin-code-8e1f", Version="1.0"'
+H='MediaBrowser Client="poster-pin", Device="placard-tools", DeviceId="poster-pin-tools", Version="1.0"'
 def call(p,m="GET",d=None,h=None,t=30):
     r=urllib.request.Request(BASE+p,data=d,method=m,headers=h or {})
     with urllib.request.urlopen(r,timeout=t) as x: