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>

crm_dedupe_plan_test.go

@@ -0,0 +1,71 @@
+package onlyoffice
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestPickCanonicalID(t *testing.T) {
+	if got := PickCanonicalID([]int64{908, 857, 900}); got != 857 {
+		t.Fatalf("got %d", got)
+	}
+	if got := PickCanonicalID(nil); got != 0 {
+		t.Fatalf("got %d", got)
+	}
+}
+
+func TestGroupCompaniesByName(t *testing.T) {
+	items := []map[string]any{
+		{"id": float64(857), "displayName": "contoso", "isCompany": true},
+		{"id": float64(908), "displayName": "contoso", "isCompany": true},
+		{"id": float64(1), "displayName": "Acme", "isCompany": true},
+	}
+	groups := GroupCompaniesByName(items)
+	if len(groups) != 2 {
+		t.Fatalf("groups: %d", len(groups))
+	}
+	key := NormalizeCompanyName("contoso")
+	if len(groups[key]) != 2 {
+		t.Fatalf("contoso group: %d", len(groups[key]))
+	}
+}
+
+func TestDedupeMembersByDisplayName(t *testing.T) {
+	members := []map[string]any{
+		{"id": float64(857), "displayName": "contoso"},
+		{"id": float64(908), "displayName": "contoso"},
+		{"id": float64(10), "displayName": "Acme"},
+	}
+	remove := DedupeMembersByDisplayName(members)
+	want := []int64{908}
+	if !reflect.DeepEqual(remove, want) {
+		t.Fatalf("remove %v want %v", remove, want)
+	}
+}
+
+func TestDedupeMemberIDs(t *testing.T) {
+	remove := DedupeMemberIDs([]int64{1, 2, 2, 3, 1})
+	if !reflect.DeepEqual(remove, []int64{2, 1}) {
+		t.Fatalf("got %v", remove)
+	}
+}
+
+func TestGroupContactInfoRows(t *testing.T) {
+	rows := []map[string]any{
+		{"id": float64(1), "infoType": "Email", "data": "a@b.com", "isPrimary": false},
+		{"id": float64(2), "infoType": "Email", "data": "a@b.com", "isPrimary": true},
+	}
+	remove := GroupContactInfoRows(rows)
+	if len(remove) != 1 || remove[0] != 1 {
+		t.Fatalf("remove %v", remove)
+	}
+}
+
+func TestDealTitleKey(t *testing.T) {
+	if got := DealTitleKey("Dev @ Acme", false); got != NormalizeOpportunityTitle("Dev @ Acme") {
+		t.Fatalf("got %q", got)
+	}
+	if got := DealTitleKey("Dev @ Acme", true); got != NormalizeOpportunityTitle("Dev") {
+		t.Fatalf("got %q", got)
+	}
+}