Switch update script to Seerr

The migration wrote the new update script directly to /usr/bin/update
while the parent shell still had the file open for reading. Since the
new content (with shebang) is longer than the original single-line file,
bash would read leftover bytes from the new content after the child
process exited, causing:
  /usr/bin/update: line 2: syntax error near unexpected token )'

Fix: write to a temp file first, then mv over /usr/bin/update. This
replaces the inode so the parent shell's fd sees EOF on the old
(unlinked) inode instead of reading into the new content.

ct/alpine-komodo.sh

@@ -48,11 +48,9 @@ function update_script() {
   fi
 
   msg_info "Migrating update function"
-  TMP_UPDATE=$(mktemp)
-  cat <<'MIGRATION_EOF' >"$TMP_UPDATE"
+  cat <<'MIGRATION_EOF' >/usr/bin/update
 bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/addon/komodo.sh)"
 MIGRATION_EOF
-  mv "$TMP_UPDATE" /usr/bin/update
   chmod +x /usr/bin/update
 
   ln -sf /usr/bin/update /usr/bin/update_komodo 2>/dev/null || true

ct/coolify.sh

@@ -46,11 +46,9 @@ function update_script() {
   fi
 
   msg_info "Migrating update function"
-  TMP_UPDATE=$(mktemp)
-  cat <<'MIGRATION_EOF' >"$TMP_UPDATE"
+  cat <<'MIGRATION_EOF' >/usr/bin/update
 bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/addon/coolify.sh)"
 MIGRATION_EOF
-  mv "$TMP_UPDATE" /usr/bin/update
   chmod +x /usr/bin/update
 
   ln -sf /usr/bin/update /usr/bin/update_coolify 2>/dev/null || true

ct/dockge.sh

@@ -48,11 +48,9 @@ function update_script() {
   fi
 
   msg_info "Migrating update function"
-  TMP_UPDATE=$(mktemp)
-  cat <<'MIGRATION_EOF' >"$TMP_UPDATE"
+  cat <<'MIGRATION_EOF' >/usr/bin/update
 bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/addon/dockge.sh)"
 MIGRATION_EOF
-  mv "$TMP_UPDATE" /usr/bin/update
   chmod +x /usr/bin/update
 
   ln -sf /usr/bin/update /usr/bin/update_dockge 2>/dev/null || true

ct/dokploy.sh

@@ -46,11 +46,9 @@ function update_script() {
   fi
 
   msg_info "Migrating update function"
-  TMP_UPDATE=$(mktemp)
-  cat <<'MIGRATION_EOF' >"$TMP_UPDATE"
+  cat <<'MIGRATION_EOF' >/usr/bin/update
 bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/addon/dokploy.sh)"
 MIGRATION_EOF
-  mv "$TMP_UPDATE" /usr/bin/update
   chmod +x /usr/bin/update
 
   ln -sf /usr/bin/update /usr/bin/update_dokploy 2>/dev/null || true

ct/komodo.sh

@@ -52,11 +52,9 @@ function update_script() {
   fi
 
   msg_info "Migrating update function"
-  TMP_UPDATE=$(mktemp)
-  cat <<'MIGRATION_EOF' >"$TMP_UPDATE"
+  cat <<'MIGRATION_EOF' >/usr/bin/update
 bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/addon/komodo.sh)"
 MIGRATION_EOF
-  mv "$TMP_UPDATE" /usr/bin/update
   chmod +x /usr/bin/update
 
   ln -sf /usr/bin/update /usr/bin/update_komodo 2>/dev/null || true

ct/runtipi.sh

@@ -46,11 +46,9 @@ function update_script() {
   fi
 
   msg_info "Migrating update function"
-  TMP_UPDATE=$(mktemp)
-  cat <<'MIGRATION_EOF' >"$TMP_UPDATE"
+  cat <<'MIGRATION_EOF' >/usr/bin/update
 bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/tools/addon/runtipi.sh)"
 MIGRATION_EOF
-  mv "$TMP_UPDATE" /usr/bin/update
   chmod +x /usr/bin/update
 
   ln -sf /usr/bin/update /usr/bin/update_runtipi 2>/dev/null || true