add CLI parity flags and expand provider support

This brings the Go CLI closer to upstream behavior with global flag handling and clearer resolve failures, while adding Tidal video downloads plus initial Deezer and SoundCloud no-account flows for broader end-to-end coverage.

internal/provider/deezer/client_test.go

@@ -0,0 +1,66 @@
+package deezer
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"streamrip-go/internal/config"
+)
+
+func TestSearchTrack(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/search/track":
+			_ = json.NewEncoder(w).Encode(map[string]any{"data": []any{map[string]any{"id": 1, "title": "Dreams", "artist": map[string]any{"name": "Fleetwood Mac"}}}})
+		default:
+			w.WriteHeader(http.StatusNotFound)
+		}
+	}))
+	defer ts.Close()
+
+	cfgData := config.DefaultConfigData()
+	c := New(&config.Config{File: cfgData, Session: cfgData})
+	c.loggedIn = true
+
+	orig := baseURL
+	baseURL = ts.URL
+	defer func() { baseURL = orig }()
+
+	pages, err := c.Search(context.Background(), "track", "dreams", 5)
+	if err != nil {
+		t.Fatalf("Search() error = %v", err)
+	}
+	if len(pages) != 1 {
+		t.Fatalf("pages len = %d, want 1", len(pages))
+	}
+}
+
+func TestGetDownloadableUsesPreview(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/track/42":
+			_ = json.NewEncoder(w).Encode(map[string]any{"id": 42, "title": "X", "preview": "https://cdn.example/p.mp3"})
+		default:
+			w.WriteHeader(http.StatusNotFound)
+		}
+	}))
+	defer ts.Close()
+
+	cfgData := config.DefaultConfigData()
+	c := New(&config.Config{File: cfgData, Session: cfgData})
+	c.loggedIn = true
+	orig := baseURL
+	baseURL = ts.URL
+	defer func() { baseURL = orig }()
+
+	d, err := c.GetDownloadable(context.Background(), "42", 0)
+	if err != nil {
+		t.Fatalf("GetDownloadable() error = %v", err)
+	}
+	if d.URL != "https://cdn.example/p.mp3" || d.Extension != "mp3" {
+		t.Fatalf("unexpected downloadable: %+v", d)
+	}
+}