1 files changed, 54 insertions, 0 deletions
diff --git a/src/features/plugins/logic/workspace-row.ts b/src/features/plugins/logic/workspace-row.ts
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+++ b/src/features/plugins/logic/workspace-row.ts
@@ -0,0 +1,54 @@
+import type { WorkspacePluginRow, WorkspacePluginStateValue } from "@dispatch/transport-contract";
+
+/**
+ * Pure helpers for the per-workspace plugin modal (plan 06 §6.6 wire rows →
+ * checkbox semantics). Zero DOM.
+ *
+ * State model (backend-canonical): `"enabled"` / `"disabled"` — an explicit
+ * record — or `"undefined"` for NO record (the blank slate; behaves disabled
+ * for Providers/Standard). Core rows arrive materialized `enabled` (Q-A).
+ */
+
+/** Whether the modal checkbox is checked for a row (explicit `enabled` only). */
+export function rowChecked(row: WorkspacePluginRow): boolean {
+  return row.state === "enabled";
+}
+
+/**
+ * Whether the row's checkbox is selectable. Two unselectable cases (§7
+ * strict layering + plan 06 §6.6):
+ * - the plugin is NOT loaded globally → greyed out and unselectable (only the
+ *   global manager loads code);
+ * - the server reports the row locked (tier "core") → the server refuses the
+ *   PUT (`core-locked` 409), so the control is disabled with a tooltip.
+ */
+export function rowSelectable(row: WorkspacePluginRow): boolean {
+  return row.loaded && !row.locked;
+}
+
+/**
+ * Why the row is unselectable (tooltip text), or null when interactive.
+ * Unloaded beats locked in the copy (the user's actionable next step is the
+ * global manager).
+ */
+export function rowBlockReason(row: WorkspacePluginRow): string | null {
+  if (!row.loaded) {
+    return "Not loaded globally — load it in the plugin manager first (only the manager loads code).";
+  }
+  if (row.locked) {
+    return "Core plugins are enabled by default in every workspace and managed globally.";
+  }
+  return null;
+}
+
+/** The effective-state label shown next to a row (uniform three-state grammar). */
+export function stateLabel(state: WorkspacePluginStateValue): string {
+  switch (state) {
+    case "enabled":
+      return "enabled";
+    case "disabled":
+      return "disabled";
+    case "undefined":
+      return "not set";
+  }
+}