feat: expose plugin data storage bridge

frontend/src/lib/plugin-host/VerstakPluginAPI.js

@@ -232,6 +232,31 @@ export function createPluginAPI(pluginId) {
       }
     },
 
+    storage: {
+      data: {
+        read: function(name) {
+          assertActive('storage.data.read(' + name + ')');
+          if (!name) {
+            throw new Error('storage.data.read requires a name');
+          }
+          return callBackend(pluginId, 'storage.data.read(' + name + ')', function() {
+            return App.ReadPluginDataJSON(pluginId, name);
+          }).then(function(data) {
+            return data || {};
+          });
+        },
+        write: function(name, data) {
+          assertActive('storage.data.write(' + name + ')');
+          if (!name) {
+            throw new Error('storage.data.write requires a name');
+          }
+          return callBackendErrorString(pluginId, 'storage.data.write(' + name + ')', function() {
+            return App.WritePluginDataJSON(pluginId, name, data || {});
+          });
+        }
+      }
+    },
+
     files: {
       list: function(relativeDir) {
         assertActive('files.list');

frontend/src/lib/test/wails-mock.js

@@ -216,6 +216,7 @@
   var pluginSettings = {
     'verstak.platform-test': { savedText: 'initial value' }
   };
+  var pluginData = {};
   var vaultFiles = makeDefaultVaultFiles();
   var externalOpens = [];
   var trashEntries = [];
@@ -1120,8 +1121,15 @@
     },
     ReadPluginSetting: function () { return Promise.resolve(null); },
     WritePluginSetting: function () { return Promise.resolve(null); },
-    ReadPluginDataJSON: function () { return Promise.resolve({}); },
+    ReadPluginDataJSON: function (pluginId, name) {
-    WritePluginDataJSON: function () { return Promise.resolve(null); },
+      var data = (pluginData[pluginId] && pluginData[pluginId][name]) || {};
+      return Promise.resolve([Object.assign({}, data), '']);
+    },
+    WritePluginDataJSON: function (pluginId, name, data) {
+      pluginData[pluginId] = pluginData[pluginId] || {};
+      pluginData[pluginId][name] = Object.assign({}, data || {});
+      return Promise.resolve('');
+    },
     OpenWorkbenchResource: function (pluginId, request) {
       return openWorkbenchResource(pluginId, request || {}, '');
     },

frontend/tests/plugin-api-contributions-test.mjs

@@ -2,6 +2,8 @@ import fs from 'node:fs';
 import path from 'node:path';
 import { pathToFileURL } from 'node:url';
 
+const pluginData = {};
+
 globalThis.window = {
   __VERSTAK_PLUGIN_REGISTRY__: {},
   __VERSTAK_EVENT_HANDLERS__: {},
@@ -27,6 +29,15 @@ globalThis.window = {
           commandId,
           args,
         }, '']),
+        ReadPluginDataJSON: (pluginId, name) => Promise.resolve([
+          Object.assign({}, (pluginData[pluginId] && pluginData[pluginId][name]) || {}),
+          '',
+        ]),
+        WritePluginDataJSON: (pluginId, name, data) => {
+          pluginData[pluginId] = pluginData[pluginId] || {};
+          pluginData[pluginId][name] = Object.assign({}, data || {});
+          return Promise.resolve('');
+        },
       },
     },
   },
@@ -67,4 +78,14 @@ if (result.status !== 'handled' || result.result.handledPath !== 'Project/Docs/r
   throw new Error(`unexpected executeFor result: ${JSON.stringify(result)}`);
 }
 
+if (!api.storage || !api.storage.data || typeof api.storage.data.read !== 'function' || typeof api.storage.data.write !== 'function') {
+  throw new Error('api.storage.data read/write is missing');
+}
+
+await api.storage.data.write('search-index', { version: 1, workspaceRootPath: 'Project' });
+const stored = await api.storage.data.read('search-index');
+if (stored.version !== 1 || stored.workspaceRootPath !== 'Project') {
+  throw new Error(`unexpected storage data: ${JSON.stringify(stored)}`);
+}
+
 console.log('plugin api contributions smoke passed');