chore: upgrade to 1.7.0+v2.7.5

Confirms immich-server at the latest v2.7.5 + holds the DB pin immich v2.7.5 ships
(14-vectorchord0.4.3-pgvectors0.2.0@sha256:bcf63357), and adds a working postgres
backup/restore for the VectorChord DB (search_path rewrite per immich docs + a
local-trust pg_hba lockout, like matrix-synapse, so the app cannot race the reimport).

pg_backup.sh

@@ -8,8 +8,7 @@
 set -e
 
 BACKUP_FILE='/var/lib/postgresql/data/backup.sql'
-PGDATA_DIR='/var/lib/postgresql/data'
+HBA='/var/lib/postgresql/data/pg_hba.conf'
-HBA="${PGDATA_DIR}/pg_hba.conf"
 export PGPASSWORD=$(cat "${POSTGRES_PASSWORD_FILE:-/run/secrets/db_password}")
 DB_USER="${POSTGRES_USER:-postgres}"
 DB_NAME="${POSTGRES_DB:-immich}"
@@ -19,41 +18,28 @@ function backup {
 }
 
 function restore {
-  # Reload pg_hba WITHOUT depending on a client connection — SIGHUP the postmaster directly. This is
-  # what guarantees the app is re-admitted at the end even if a psql connection isn't available.
-  reload_pg() {
-    local pid
-    pid=$(head -1 "${PGDATA_DIR}/postmaster.pid" 2>/dev/null || true)
-    if [ -n "$pid" ]; then kill -HUP "$pid" 2>/dev/null || true
-    else psql -U "$DB_USER" -d postgres -c "SELECT pg_reload_conf();" >/dev/null 2>&1 || true; fi
-  }
   restore_hba() {
     if [ -f "${HBA}.ccci.bak" ]; then
       cat "${HBA}.ccci.bak" > "$HBA"
       rm -f "${HBA}.ccci.bak"
-      reload_pg
+      psql -U "$DB_USER" -d postgres -c "SELECT pg_reload_conf();" >/dev/null 2>&1 || true
     fi
   }
-  # Always re-admit the app, even if any step below fails or the hook is signalled.
   trap restore_hba EXIT INT TERM
 
-  # Lock the networked app out for the duration of the restore: a local-trust-only pg_hba + reload
+  # Lock the networked app out for the restore: local-trust-only pg_hba + reload rejects all TCP
-  # makes postgres reject every TCP connection, so immich-server can't reconnect and re-run its own
+  # connections, then terminate the ones it already holds so DROP DATABASE can proceed.
-  # migrations concurrently with (and conflicting with) the import. Then terminate the connections it
-  # already holds so DROP DATABASE can proceed.
   cp "$HBA" "${HBA}.ccci.bak"
   printf 'local all all trust\n' > "$HBA"
-  reload_pg
+  psql -U "$DB_USER" -d postgres -c "SELECT pg_reload_conf();"
   psql -U "$DB_USER" -d postgres -c \
-    "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname='${DB_NAME}' AND pid<>pg_backend_pid();" >/dev/null
+    "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname='${DB_NAME}' AND pid<>pg_backend_pid();"
 
-  psql -U "$DB_USER" -d postgres -c "DROP DATABASE ${DB_NAME} WITH (FORCE);" >/dev/null
+  psql -U "$DB_USER" -d postgres -c "DROP DATABASE ${DB_NAME} WITH (FORCE);"
   createdb -U "$DB_USER" "$DB_NAME"
-  # Rewrite the empty search_path the VectorChord dump sets so vector/vchord type + operator
-  # references resolve during the import (immich upstream restore procedure), then import alone.
   gunzip -c "$BACKUP_FILE" \
     | sed "s/SELECT pg_catalog.set_config('search_path', '', false);/SELECT pg_catalog.set_config('search_path', 'public, pg_catalog', true);/g" \
-    | psql -U "$DB_USER" -d "$DB_NAME" --single-transaction --set ON_ERROR_STOP=on >/dev/null
+    | psql -U "$DB_USER" -d "$DB_NAME" --single-transaction --set ON_ERROR_STOP=on
 
   restore_hba
   trap - EXIT INT TERM