fix: Rebrand systemd templates, polkit rules, and install scripts

- src/templates/pipedald.service.template — user/group pipedal_d → oppedal_d
- src/templates/pipedaladmind.service.template — WorkingDirectory /var/pipedal → /var/oppedal
- src/templates/pipedal_nm_p2pd.service.template — Description and WorkingDirectory
- src/templates/pipedal_p2pd.service.template — Description and WorkingDirectory
- src/templates/pipedal_p2pd.conf.template — p2p_model_name, manufacturer
- src/templates/jack.service.template — After=pipedald → After=oppedald
- src/templates/*.conf — PiPedal/pipedal-* → OP-Pedal/oppedal-* references
- src/polkit-1/rules/10-pipedal-networkmanager.rules — group pipedal_d → oppedal_d
- install.sh — pipedalconfig/oppedalconfig binary paths
- uninstall.sh — /etc/pipedal, /var/pipedal → /etc/oppedal, /var/oppedal
- run.sh — pipedald → oppedald, /etc/pipedal → /etc/oppedal

src/templates/pipedal_p2pd.conf.template

@@ -21,9 +21,9 @@ wifiChannel=${WIFI_CHANNEL}
 # UI use only. service state is authoritative.
 enabled=${ENABLED}
 # P2P Device info
-p2p_model_name=PiPedal
+p2p_model_name=OP-Pedal
 p2p_model_number=1
-p2p_manufacturer="The PiPedal Project"
+p2p_manufacturer="The OP-Pedal Project"
 p2p_serial_number=1
 p2p_device_type=1-0050F204-1
 
@@ -39,6 +39,6 @@ p2p_go_he=0
 service_guid_file=${INSTANCE_ID_FILE}
 
 
-# GUID identifying the PiPedal service
+# GUID identifying the OP-Pedal service
 # (if service_guid_file is not provided.)
 service_guid=