fix: clarify active interface module count

src/govoplan_dashboard/backend/manifest.py

@@ -115,7 +115,7 @@ manifest = ModuleManifest(
                 id="dashboard.widget.installed-modules",
                 module_id="dashboard",
                 kind="section",
-                label="Installed modules widget",
+                label="Active interface modules widget",
                 parent_id="dashboard.grid",
                 order=10,
             ),
@@ -129,7 +129,9 @@ manifest = ModuleManifest(
             body=(
                 "Core only provides a minimal fallback home when the dashboard module is absent. "
                 "Dashboard widgets must be contributed through core contracts, not by importing sibling module components directly. "
-                "Personal layouts are stored per tenant, account, and active View."
+                "Personal layouts are stored per tenant, account, and active View. The active interface-module count includes only "
+                "tenant-enabled modules whose WebUI loaded in the current browser session. It intentionally differs from the "
+                "Administration package catalogue, which includes discovered backend-only and headless module manifests."
             ),
             layer="configured",
             documentation_types=("admin", "user"),