Consolidate all paths to plugin flash dir, fix watchdog 7.3 triggers

- Move SCRIPTS_DIR/DATA_DIR/STATE_DIR from appdata to /boot/config/plugins/varaverk
- All state files now in STATE_DIR (no more /tmp or /boot/config root writes)
- Bootstrap: Gitea-first clone with GitHub fallback, no array dependency
- varaverk.cfg seeded with Gitea connection settings
- .gitignore: add State_Files/, varaverk.cfg, varaverk-*.txz
- Partnership/transcode/fallback scripts use STATE_DIR variables
- PHP config.php: DATA_DIR/STATE_DIR constants, VV_SETUP_STATE_FILE dynamic
- deploy.sh PROD_ROOT updated to plugin flash dir

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Fallback/fallback.sh

@@ -345,7 +345,7 @@ state_init() {
 # Returns 0 (true) if the local partnership DB reports an ACTIVE partnership.
 # Reads /boot/config/partnership_<hostname>.db — no subprocess, no SSH.
 check_partnership_active() {
-    local state_file="/boot/config/partnership_${LOCAL_SERVER_NAME}.db"
+    local state_file="${STATE_DIR:-/boot/config}/partnership_${LOCAL_SERVER_NAME}.db"
     local state
     state=$(grep "^state=" "$state_file" 2>/dev/null | cut -d= -f2)
     [[ "$state" == "ACTIVE" ]]