feat(wizard): optional AcoustID key step for metadata enrichment

Adds a wizard step (after the ML step) that prompts for an AcoustID API
key. Left blank, enrichment runs on embedded tags only; with a key the
backend also identifies untagged files by audio fingerprint (§1D). The
key is appended to .env.deploy and reaches both api and worker via
env_file. en/ru strings included.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

deploy.sh

@@ -37,6 +37,7 @@ CFG_HTTP_PORT="8080"; CFG_API_PORT="8080"; CFG_WEBUI_PORT="3000"
 CFG_PUBLIC_API_BASE_URL="/api/v1"
 CFG_ADMIN_CREATE="no"; CFG_ADMIN_USER=""; CFG_ADMIN_PASS=""
 CFG_ML_URL=""
+CFG_ACOUSTID_KEY=""
 CFG_JWT_SECRET=""
 
 # ==========================================================================
@@ -185,6 +186,12 @@ step_ml() {
     ui_input "$(t ml_prompt)" "" ""; CFG_ML_URL="$UI_VALUE"
 }
 
+step_enrichment() {
+    ui_title "$(t step_enrichment)"
+    ui_dim "$(t enrichment_note)"
+    ui_input "$(t acoustid_prompt)" "" ""; CFG_ACOUSTID_KEY="$UI_VALUE"
+}
+
 access_url() {
     if [[ "$CFG_WEBUI" == "yes" ]]; then
         if [[ "$CFG_PROXY" == "yes" ]]; then
@@ -236,6 +243,7 @@ run_wizard() {
     step_network
     step_admin
     step_ml
+    step_enrichment
 
     gen_hex 32; CFG_JWT_SECRET="$SECRET"