Platform-agnostic refactor: eliminate OS-specific hardcodes from core scripts

All bash scripts are now platform-neutral. Unraid-specific paths, commands,
and service checks moved to Plugin/unraid/adapter.sh. Core scripts call
platform_*() functions exclusively — no direct OS paths in runtime logic.

New adapter functions: platform_storage_path, platform_webui_install_path,
platform_scripts_dir_probe_cmd, platform_setup_db_path, platform_storage_healthy,
platform_is_service_enabled, platform_get_temp_thresholds, platform_disk_states_path,
platform_rebuild_container, platform_push_conf, platform_push_setup_state,
platform_get_templates_dir, platform_send_os_notification.

Partnership services stack (Emby/Jellyfin/Seerr/SeerrFin) added as third
onboarding stack alongside auth and arr stacks.

Orchestrators/array_started.sh

@@ -74,10 +74,6 @@ if [[ "$EUID" -ne 0 ]]; then
     exit 1
 fi
 
-platform_require_cmd \
-    "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
-    "" "" \
-    "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
 acquire_lock
 

Orchestrators/array_stopping.sh

@@ -53,10 +53,6 @@ if [[ "$EUID" -ne 0 ]]; then
     exit 1
 fi
 
-platform_require_cmd \
-    "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
-    "" "" \
-    "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
 acquire_lock
 

Orchestrators/critical_sync_maintenance.sh

@@ -59,10 +59,6 @@ if [[ "$EUID" -ne 0 ]]; then
     exit 1
 fi
 
-platform_require_cmd \
-    "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
-    "" "" \
-    "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
 acquire_lock "strict"
 

Orchestrators/daily_sync_maintenance.sh

@@ -83,10 +83,6 @@ if [[ "$EUID" -ne 0 ]]; then
     exit 1
 fi
 
-platform_require_cmd \
-    "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
-    "" "" \
-    "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
 if ! command -v docker &>/dev/null; then
     error "Docker command not found"

Orchestrators/intermediate_sync_maintenance.sh

@@ -71,10 +71,6 @@ if [[ "$EUID" -ne 0 ]]; then
     exit 1
 fi
 
-platform_require_cmd \
-    "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
-    "" "" \
-    "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
 acquire_lock
 

Orchestrators/watchdog_orchestrator.sh

@@ -125,7 +125,7 @@ if ! platform_storage_healthy; then
     echo "Array not started — skipping watchdog cycle"
     exit 0
 fi
-log "$ICON_DISK Array: /mnt/user mounted (shfs) ✅"
+log "$ICON_DISK Array: $(platform_storage_path) mounted ✅"
 
 # ==============================================================================================
 # ━━━ Startup Grace ━━━

Orchestrators/weekly_sync_maintenance.sh

@@ -76,10 +76,6 @@ if [[ "$EUID" -ne 0 ]]; then
     exit 1
 fi
 
-platform_require_cmd \
-    "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
-    "" "" \
-    "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
 acquire_lock