feat: upstream generic workspace tooling (board-sync, crm audit, catalog names)

Promote the generic, reusable parts of the private oo-workspace into the
public library/CLI, so oo-workspace can shrink to business glue.

- board.go: Board types + (c *Client) SyncBoard — upsert project
  milestones/tasks by exact title from a YAML board (dry-run when
  apply=false). CLI: oo projects board-sync.
- crm_audit.go: OpportunityAudit + (c *Client) AuditOpportunities —
  file/task/member counts with a generic class (ok|dup|empty|junk-title).
  CLI: oo crm audit [--out].
- catalog/names.go: CleanPersonNames / GuessNameFromEmail /
  FormatProjectTitle (ported from oo-workspace).
- catalog: adopt the newer apply/match logic — name repair (never encode
  company in lastName), company grouping key, contact-info type
  normalization, preserve an already-applied oo_id. Keeps the local
  Address/OOProjects fields and the config-driven classifier.

Business-only oo-workspace commands (crm clean/migrate, folders, search)
deliberately stay private.

catalog/match.go

@@ -27,7 +27,7 @@ func MatchAgainstOO(ctx context.Context, client *onlyoffice.Client, doc *Documen
 			byEmail[NormalizeEmail(em)] = c
 		}
 		if isCo {
-			key := NormalizeName(fmt.Sprint(c["displayName"]))
+			key := onlyoffice.CompanyGroupingKey(fmt.Sprint(c["displayName"]))
 			if key != "" {
 				byCompanyName[key] = c
 			}
@@ -63,7 +63,7 @@ func MatchAgainstOO(ctx context.Context, client *onlyoffice.Client, doc *Documen
 		}
 		if !matched {
 			if e.Kind == "company" {
-				if c, ok := byCompanyName[NormalizeName(e.Name)]; ok {
+				if c, ok := byCompanyName[onlyoffice.CompanyGroupingKey(e.Name)]; ok {
 					oo = c
 					matched = true
 				}
@@ -92,6 +92,12 @@ func MatchAgainstOO(ctx context.Context, client *onlyoffice.Client, doc *Documen
 			e.OOID = contactIDString(oo)
 			continue
 		}
+		// Keep a previously applied oo_id (list payloads often omit emails, so
+		// email match can miss persons that already exist in CRM).
+		if strings.TrimSpace(e.OOID) != "" {
+			e.Status = "exists"
+			continue
+		}
 		e.Status = "new"
 		e.OOID = ""
 	}
@@ -120,8 +126,7 @@ func contactEmails(c map[string]any) []string {
 		out = append(out, em)
 	}
 	for _, row := range onlyoffice.ContactInfoRows(c) {
-		t := strings.ToLower(fmt.Sprint(row["infoType"]))
-		if t != "email" {
+		if onlyoffice.NormalizeContactInfoType(fmt.Sprint(row["infoType"])) != "email" {
 			continue
 		}
 		data := strings.TrimSpace(fmt.Sprint(row["data"]))