diff --git a/packages/unified-ui/lib/unified_ui/reference.ex b/packages/unified-ui/lib/unified_ui/reference.ex
index 9a6ba59e..d41b4e9f 100644
--- a/packages/unified-ui/lib/unified_ui/reference.ex
+++ b/packages/unified-ui/lib/unified_ui/reference.ex
@@ -80,11 +80,6 @@ defmodule UnifiedUi.Reference do
     WidgetComponents.catalog()
   end
 
-  @spec widget_component_source_mapping() :: %{pos_integer() => map()}
-  def widget_component_source_mapping do
-    WidgetComponents.source_mapping()
-  end
-
   @spec widget_component_aliases() :: %{atom() => atom()}
   def widget_component_aliases do
     WidgetComponents.aliases()
diff --git a/packages/unified-ui/lib/unified_ui/tooling.ex b/packages/unified-ui/lib/unified_ui/tooling.ex
index 8b36072b..76a4329b 100644
--- a/packages/unified-ui/lib/unified_ui/tooling.ex
+++ b/packages/unified-ui/lib/unified_ui/tooling.ex
@@ -117,8 +117,7 @@ defmodule UnifiedUi.Tooling do
     %{
       families: WidgetComponents.component_families(),
       components: WidgetComponents.catalog(),
-      aliases: WidgetComponents.aliases(),
-      source_mapping: WidgetComponents.source_mapping()
+      aliases: WidgetComponents.aliases()
     }
   end
 
diff --git a/packages/unified-ui/lib/unified_ui/widget_components.ex b/packages/unified-ui/lib/unified_ui/widget_components.ex
index 5df729df..b349c710 100644
--- a/packages/unified-ui/lib/unified_ui/widget_components.ex
+++ b/packages/unified-ui/lib/unified_ui/widget_components.ex
@@ -2,9 +2,12 @@ defmodule UnifiedUi.WidgetComponents do
   @moduledoc """
   Reference catalog for the canonical widget-component expansion.
 
-  The catalog records the AshUi PR 79-98 source mapping, portable canonical
-  names, semantic families, and compatibility aliases before the DSL entities
-  are implemented.
+  The catalog records portable canonical names, semantic families, and
+  compatibility aliases for widget kinds available in UnifiedUi.
+
+  Schema is intentionally loose: a catalog entry needs only kind, family,
+  summary, and aliases. Provenance and PR tracking live in git history,
+  not in the runtime catalog (per Pascal Discord 2026-05-16).
   """
 
   @type family ::
@@ -19,17 +22,10 @@ defmodule UnifiedUi.WidgetComponents do
   @type component :: %{
           required(:kind) => atom(),
           required(:family) => family(),
-          required(:source) => source(),
           required(:summary) => String.t(),
           required(:aliases) => [atom()]
         }
 
-  @type source :: %{
-          required(:system) => :ash_ui,
-          required(:pr) => pos_integer(),
-          required(:name) => atom()
-        }
-
   @type name_diagnostic :: %{
           required(:status) => :canonical | :alias | :unknown,
           required(:name) => atom() | String.t(),
@@ -52,119 +48,102 @@ defmodule UnifiedUi.WidgetComponents do
     %{
       kind: :inline_rich_text_heading,
       family: :content_identity_and_disclosure,
-      source: %{system: :ash_ui, pr: 79, name: :inline_rich_text_heading},
       summary: "Semantic heading with inline text and emphasis segments.",
       aliases: []
     },
     %{
       kind: :disclosure,
       family: :content_identity_and_disclosure,
-      source: %{system: :ash_ui, pr: 80, name: :disclosure},
       summary: "Progressive disclosure region with summary, open state, and body children.",
       aliases: []
     },
     %{
       kind: :runtime_form_shell,
       family: :form_control_and_composer,
-      source: %{system: :ash_ui, pr: 81, name: :phoenix_form},
       summary: "Portable form shell whose runtime-owned form state is supplied by the host.",
       aliases: [:phoenix_form]
     },
     %{
       kind: :kicker,
       family: :content_identity_and_disclosure,
-      source: %{system: :ash_ui, pr: 82, name: :kicker},
       summary: "Eyebrow label cluster with ordered items and separator behavior.",
       aliases: []
     },
     %{
       kind: :avatar,
       family: :content_identity_and_disclosure,
-      source: %{system: :ash_ui, pr: 83, name: :avatar},
       summary: "Identity display using initials or image source with size, shape, and variant.",
       aliases: []
     },
     %{
       kind: :presence_dot,
       family: :content_identity_and_disclosure,
-      source: %{system: :ash_ui, pr: 84, name: :presence_dot},
       summary: "Small state-driven status indicator with size and accessibility metadata.",
       aliases: []
     },
     %{
       kind: :segmented_button_group,
       family: :form_control_and_composer,
-      source: %{system: :ash_ui, pr: 85, name: :segmented_button_group},
       summary: "Single-selection segmented control with option values and labels.",
       aliases: []
     },
     %{
       kind: :list_item_multi_column,
       family: :row_and_artifact,
-      source: %{system: :ash_ui, pr: 86, name: :list_item_multi_column},
       summary: "Selectable or linkable multi-column row with child cell content.",
       aliases: []
     },
     %{
       kind: :artifact_row,
       family: :row_and_artifact,
-      source: %{system: :ash_ui, pr: 87, name: :artifact_row},
       summary: "Artifact row with title, meta text, row identity, and trailing content.",
       aliases: []
     },
     %{
       kind: :sticky_frosted_header,
       family: :layer_shell_and_callout,
-      source: %{system: :ash_ui, pr: 88, name: :sticky_frosted_header},
       summary: "Sticky shell header with leading, title, and trailing child positions.",
       aliases: []
     },
     %{
       kind: :pipeline_stepper_horizontal,
       family: :workflow_progress_and_status,
-      source: %{system: :ash_ui, pr: 89, name: :pipeline_stepper_horizontal},
       summary: "Horizontal workflow stepper with done, active, and pending step state.",
       aliases: []
     },
     %{
       kind: :segmented_progress_bar,
       family: :workflow_progress_and_status,
-      source: %{system: :ash_ui, pr: 90, name: :segmented_progress_bar},
       summary: "Weighted multi-segment progress bar with per-segment state.",
       aliases: []
     },
     %{
       kind: :workflow_stage_list_vertical,
       family: :workflow_progress_and_status,
-      source: %{system: :ash_ui, pr: 91, name: :workflow_stage_list_vertical},
       summary: "Vertical numbered workflow stage list with connector state.",
       aliases: []
     },
     %{
       kind: :meter_thin,
       family: :workflow_progress_and_status,
-      source: %{system: :ash_ui, pr: 92, name: :meter_thin},
       summary: "Compact progress meter with normalized value and optional label.",
       aliases: []
     },
     %{
       kind: :slide_over_panel,
       family: :layer_shell_and_callout,
-      source: %{system: :ash_ui, pr: 93, name: :slide_over_panel},
       summary: "Non-modal contextual side panel with open state, size, and children.",
       aliases: []
     },
     %{
       kind: :event_callout,
       family: :layer_shell_and_callout,
-      source: %{system: :ash_ui, pr: 94, name: :event_callout},
       summary: "Inline stream or status callout with tone, eyebrow, body, and action content.",
       aliases: []
     },
     %{
       kind: :redline_inline,
       family: :redline_and_code,
-      source: %{system: :ash_ui, pr: 95, name: :redline_inline},
       summary:
         "Inline redline text display with keep, insert, delete, accepted, and rejected state.",
       aliases: []
@@ -172,21 +151,18 @@ defmodule UnifiedUi.WidgetComponents do
     %{
       kind: :code_block_syntax_highlighted,
       family: :redline_and_code,
-      source: %{system: :ash_ui, pr: 96, name: :code_block_syntax_highlighted},
       summary: "Pre-tokenized code block display with language and semantic token types.",
       aliases: []
     },
     %{
       kind: :chat_composer,
       family: :form_control_and_composer,
-      source: %{system: :ash_ui, pr: 97, name: :chat_composer},
       summary: "Multi-line composer with tool area, send intent, and change intent.",
       aliases: []
     },
     %{
       kind: :list_repeat,
       family: :composition_behavior,
-      source: %{system: :ash_ui, pr: 98, name: :ui_relationship_repeat},
       summary:
         "Composition behavior that repeats a child template over rows from a list binding.",
       aliases: [:ui_relationship_repeat, :repeat]
@@ -329,21 +305,6 @@ defmodule UnifiedUi.WidgetComponents do
     Enum.filter(@components, &(&1.family == family))
   end
 
-  @spec source_mapping() :: %{pos_integer() => map()}
-  def source_mapping do
-    Map.new(@components, fn component ->
-      source = component.source
-
-      {source.pr,
-       %{
-         source_name: source.name,
-         canonical_kind: component.kind,
-         family: component.family,
-         aliases: component.aliases
-       }}
-    end)
-  end
-
   defp normalize_name(name) when is_atom(name), do: name
 
   defp normalize_name(name) when is_binary(name) do
diff --git a/packages/unified-ui/test/unified_ui/widget_components_catalog_test.exs b/packages/unified-ui/test/unified_ui/widget_components_catalog_test.exs
index 6d225937..31f96ee1 100644
--- a/packages/unified-ui/test/unified_ui/widget_components_catalog_test.exs
+++ b/packages/unified-ui/test/unified_ui/widget_components_catalog_test.exs
@@ -44,17 +44,6 @@ defmodule UnifiedUi.WidgetComponentsCatalogTest do
            }
   end
 
-  test "source mapping records every AshUi PR in order" do
-    source_mapping = WidgetComponents.source_mapping()
-
-    assert Map.keys(source_mapping) == Enum.to_list(79..98)
-    assert source_mapping[79].canonical_kind == :inline_rich_text_heading
-    assert source_mapping[81].source_name == :phoenix_form
-    assert source_mapping[81].canonical_kind == :runtime_form_shell
-    assert source_mapping[98].source_name == :ui_relationship_repeat
-    assert source_mapping[98].canonical_kind == :list_repeat
-  end
-
   test "canonical name lookup accepts AshUi aliases with diagnostics" do
     assert WidgetComponents.canonical_kind(:runtime_form_shell) == {:ok, :runtime_form_shell}
     assert WidgetComponents.canonical_kind("runtime_form_shell") == {:ok, :runtime_form_shell}
@@ -94,13 +83,9 @@ defmodule UnifiedUi.WidgetComponentsCatalogTest do
     assert UnifiedUi.Reference.widget_component_families() ==
              WidgetComponents.component_families()
 
-    assert UnifiedUi.Reference.widget_component_source_mapping()[98].canonical_kind ==
-             :list_repeat
-
     tooling_catalog = UnifiedUi.Tooling.widget_component_catalog()
 
     assert tooling_catalog.families == WidgetComponents.component_families()
     assert tooling_catalog.aliases == WidgetComponents.aliases()
-    assert tooling_catalog.source_mapping[81].canonical_kind == :runtime_form_shell
   end
 end