feat: unify token message composition across sources

Remove alpha-first early return and build one rich message from all
available sources (spot/future/alpha) with conditional rows.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

internal/services/tele/commands/token_test.go

@@ -0,0 +1,42 @@
+package commands
+
+import "testing"
+
+func TestBuildRichTokenMessageInput_AllSources(t *testing.T) {
+	in := buildRichTokenMessageInput(buildRichTokenMessageArgs{
+		Token:            "ETH",
+		SpotPrice:        3245,
+		HasSpot:          true,
+		FuturePrice:      3251,
+		FundingRate:      0.000123,
+		FundingTimeMs:    1740000000000,
+		HasFuture:        true,
+		AlphaPrice:       3248,
+		HasAlpha:         true,
+		Alpha24h:         -3.21,
+		HasAlpha24h:      true,
+		MarginAPRPercent: 7.665,
+		HasMarginAPR:     true,
+	})
+
+	if !in.HasSpot || !in.HasFuture || !in.HasAlpha || !in.HasAlpha24h || !in.HasMarginAPR {
+		t.Fatalf("expected all source flags true: %+v", in)
+	}
+}
+
+func TestBuildRichTokenMessageInput_OnlyAlpha(t *testing.T) {
+	in := buildRichTokenMessageInput(buildRichTokenMessageArgs{
+		Token:       "ABC",
+		HasAlpha:    true,
+		AlphaPrice:  0.1234,
+		HasAlpha24h: true,
+		Alpha24h:    12.4,
+	})
+
+	if !in.HasAlpha || !in.HasAlpha24h {
+		t.Fatalf("expected alpha flags true: %+v", in)
+	}
+	if in.HasSpot || in.HasFuture {
+		t.Fatalf("did not expect spot/future flags true: %+v", in)
+	}
+}