fix: address review — single timestamp, descriptive URL error, skipped count

- Capture single datetime.now() in Registry.update() and reuse for both
  installed_at and updated_at to avoid tiny time skews
- Include ValueError message in --from URL validation error so users see
  the actual failure reason (e.g., missing hostname)
- Track skipped workflow count in 'workflow update' and show
  'No updates found (N skipped)' instead of misleading
  'All workflows are up to date!' when workflows were skipped

Author: mnriem

src/specify_cli/__init__.py

@@ -5028,9 +5028,9 @@ def _validate_and_install_local(yaml_path: Path, source_label: str) -> None:
     if from_url:
         try:
             _validate_url_scheme(from_url)
-        except ValueError:
-            console.print("[red]Error:[/red] URL must use HTTPS for security.")
-            console.print("HTTP is only allowed for localhost URLs.")
+        except ValueError as exc:
+            console.print(f"[red]Error:[/red] Invalid URL: {exc}")
+            console.print("URL must use HTTPS for security. HTTP is only allowed for localhost URLs.")
             raise typer.Exit(1)
 
         console.print("[yellow]Warning:[/yellow] Installing from external URL.")
@@ -5365,16 +5365,19 @@ def workflow_update(
 
     updates_available = []
     catalog_errors = 0
+    skipped = 0
     for wf_id in workflows_to_update:
         metadata = installed.get(wf_id, {})
         if not isinstance(metadata, dict):
             console.print(f"⚠  {wf_id}: Malformed workflow registry entry (skipping)")
+            skipped += 1
             continue
         installed_ver_str = str(metadata.get("version", "0.0.0"))
         try:
             installed_version = pkg_version.Version(installed_ver_str)
         except (pkg_version.InvalidVersion, TypeError):
             console.print(f"⚠  {wf_id}: Invalid installed version '{installed_ver_str}' (skipping)")
+            skipped += 1
             continue
 
         try:
@@ -5386,17 +5389,20 @@ def workflow_update(
 
         if not cat_info:
             console.print(f"⚠  {wf_id}: Not found in catalog (skipping)")
+            skipped += 1
             continue
 
         if not cat_info.get("_install_allowed", True):
             console.print(f"⚠  {wf_id}: Updates not allowed from '{cat_info.get('_catalog_name', 'catalog')}' (skipping)")
+            skipped += 1
             continue
 
         cat_ver_str = str(cat_info.get("version", "0.0.0"))
         try:
             catalog_version = pkg_version.Version(cat_ver_str)
         except (pkg_version.InvalidVersion, TypeError):
             console.print(f"⚠  {wf_id}: Invalid catalog version '{cat_ver_str}' (skipping)")
+            skipped += 1
             continue
 
         if catalog_version > installed_version:
@@ -5416,7 +5422,10 @@ def workflow_update(
         if catalog_errors:
             console.print(f"\n[yellow]Could not check {catalog_errors} workflow(s) due to catalog errors[/yellow]")
             raise typer.Exit(1)
-        console.print("\n[green]All workflows are up to date![/green]")
+        if skipped:
+            console.print(f"\n[green]No updates found[/green] ({skipped} workflow(s) skipped)")
+        else:
+            console.print("\n[green]All workflows are up to date![/green]")
         raise typer.Exit(0)
 
     console.print("\n[bold]Updates available:[/bold]\n")

src/specify_cli/workflows/catalog.py

@@ -165,12 +165,13 @@ def update(self, workflow_id: str, fields: dict[str, Any]) -> None:
         import copy
         safe_fields = copy.deepcopy(fields)
         safe_fields.pop("installed_at", None)  # always preserve original
+        now = datetime.now(timezone.utc).isoformat()
         existing.update(safe_fields)
         if installed_at is not None:
             existing["installed_at"] = installed_at
         if "installed_at" not in existing:
-            existing["installed_at"] = datetime.now(timezone.utc).isoformat()
-        existing["updated_at"] = datetime.now(timezone.utc).isoformat()
+            existing["installed_at"] = now
+        existing["updated_at"] = now
         self.save()
 
     def get(self, workflow_id: str) -> dict[str, Any] | None: