feat(crm): dedupe duplicates, fix deal titles, and add cleanup CLI

Merge duplicate companies/persons/deals by name, remove duplicate contact
info and opportunity members, and rename malformed " @ Company" titles.
Applications sync now avoids empty-position titles and duplicate members.

Co-authored-by: Cursor <cursoragent@cursor.com>

cmd/oo/applications/applications_test.go

@@ -0,0 +1,30 @@
+package applications
+
+import (
+	"testing"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func TestDealTitleForApplication(t *testing.T) {
+	if got := onlyoffice.DealTitleForApplication("", "711media"); got != "711media" {
+		t.Fatalf("got %q", got)
+	}
+	if got := onlyoffice.DealTitleForApplication("Dev", "Acme"); got != "Dev @ Acme" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestHasContactInfoHelper(t *testing.T) {
+	contact := map[string]any{
+		"commonData": []any{
+			map[string]any{"infoType": "Email", "data": "a@b.com"},
+		},
+	}
+	if !onlyoffice.HasContactInfo(contact, "Email", "a@b.com") {
+		t.Fatal("expected match")
+	}
+	if onlyoffice.HasContactInfo(contact, "Email", "other@b.com") {
+		t.Fatal("unexpected match")
+	}
+}