docs: note that 1.0.0-RC.3 is a burned republish of RC.2

A tag build of v1.0.0-RC.2 published 1.0.0-RC.3 with the RC.2 code
(QRun-IO/qqq-orb#20). Add a dated do-not-use entry for RC.3 and move
the unreleased work to 1.0.0-RC.4, the next real candidate.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project are documented here. The format follows Keep a Changelog; versions follow semantic versioning.
 
-## [1.0.0-RC.3] - Unreleased
+## [1.0.0-RC.4] - Unreleased
 
 ### Added
 - **App home dashboard.** The `sqlWorkbench` app's home is now an information dashboard of real data, read in the viewer's session (permissions and record locks apply): summary tiles and links, runs per day, recent notebooks, recent runs, slowest and failed queries, most-used notebooks, shared notebooks, committed writes, and (workbench admins only) activity by user. Each widget has an honest empty state.
@@ -23,6 +23,10 @@ All notable changes to this project are documented here. The format follows Keep
 ### Upgrade from RC.2
 - Follow [UPGRADE.md](UPGRADE.md): grant the renamed permissions and rename stored table names (audit, saved views and reports). No DDL.
 
+## [1.0.0-RC.3] - 2026-10-12
+
+**Do not use.** 1.0.0-RC.3 on Maven Central is an accidental republish of the RC.2 code by a tag build; do not use it. The next real candidate is 1.0.0-RC.4. (Cause: QRun-IO/qqq-orb#20; the `publish_release` workflow now runs on GA tags only.)
+
 ## [1.0.0-RC.2] - Unreleased
 
 The workbench's data becomes standard QQQ tables, secured by QQQ's own mechanisms instead of being hidden ([#3](https://github.com/QRun-IO/qbit-sql-workbench/issues/3)). Requires QQQ `4.1.0-RC.4` or later ([qqq#1073](https://github.com/QRun-IO/qqq/issues/1073)).

src/main/java/com/kingsrook/qbits/sqlworkbench/customizers/CellTableCustomizer.java

@@ -202,7 +202,7 @@ public class CellTableCustomizer extends WorkbenchTableCustomizer
    /*******************************************************************************
     ** Type, content and key checks.
     *******************************************************************************/
-   private static void validate(SqlWorkbenchQBitConfig config, QRecord record, boolean inserting)
+   private static void validate(SqlWorkbenchQBitConfig config, QRecord record, boolean inserting) throws QException
    {
       if(inserting || record.getValues().containsKey("cellType"))
       {
@@ -216,6 +216,7 @@ public class CellTableCustomizer extends WorkbenchTableCustomizer
          record.setValue("cellType", type);
       }
 
+      validateBackend(record, "backendName");
       if(inserting && record.getValue("content") == null)
       {
          record.setValue("content", "");

src/main/java/com/kingsrook/qbits/sqlworkbench/customizers/NotebookTableCustomizer.java

@@ -262,7 +262,7 @@ public class NotebookTableCustomizer extends WorkbenchTableCustomizer
    /*******************************************************************************
     ** Title (required on insert, never blank) and parameters (a JSON list).
     *******************************************************************************/
-   private static void validateContent(QRecord record, boolean inserting)
+   private static void validateContent(QRecord record, boolean inserting) throws QException
    {
       if(inserting || record.getValues().containsKey("title"))
       {
@@ -277,6 +277,7 @@ public class NotebookTableCustomizer extends WorkbenchTableCustomizer
          }
       }
 
+      validateBackend(record, "defaultBackendName");
       String parameters = record.getValueString("parametersJson");
       if(StringUtils.hasContent(parameters))
       {

src/main/java/com/kingsrook/qbits/sqlworkbench/customizers/WorkbenchTableCustomizer.java

@@ -27,11 +27,14 @@ import java.util.Set;
 import com.kingsrook.qbits.sqlworkbench.SqlWorkbenchQBitConfig;
 import com.kingsrook.qbits.sqlworkbench.SqlWorkbenchRuntime;
 import com.kingsrook.qbits.sqlworkbench.SqlWorkbenchSecurity;
+import com.kingsrook.qbits.sqlworkbench.engine.WorkbenchBackends;
 import com.kingsrook.qbits.sqlworkbench.notebook.NotebookVersioning;
 import com.kingsrook.qqq.backend.core.actions.QBackendTransaction;
 import com.kingsrook.qqq.backend.core.actions.customizers.AbstractPreInsertCustomizer;
 import com.kingsrook.qqq.backend.core.actions.customizers.TableCustomizerInterface;
+import com.kingsrook.qqq.backend.core.context.QContext;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.exceptions.QNotFoundException;
 import com.kingsrook.qqq.backend.core.logging.QLogger;
 import com.kingsrook.qqq.backend.core.model.actions.tables.delete.DeleteInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.insert.InsertInput;
@@ -278,4 +281,26 @@ public abstract class WorkbenchTableCustomizer implements TableCustomizerInterfa
    {
       return (SqlWorkbenchSecurity.isSystemUser());
    }
+
+
+
+   /*******************************************************************************
+    ** Optional backend selections must name an allowed workbench target.
+    *******************************************************************************/
+   protected static void validateBackend(QRecord record, String fieldName) throws QException
+   {
+      String name = record.getValueString(fieldName);
+      if(name != null)
+      {
+         try
+         {
+            new WorkbenchBackends(QContext.getQInstance(), SqlWorkbenchRuntime.get()).getTarget(name);
+         }
+         catch(QNotFoundException e)
+         {
+            badInput(record, "Select an available SQL Workbench backend.");
+         }
+      }
+   }
+
 }

src/main/java/com/kingsrook/qbits/sqlworkbench/metadata/SqlWorkbenchSecurityAndJoinsMetaDataProducer.java

@@ -19,11 +19,16 @@ package com.kingsrook.qbits.sqlworkbench.metadata;
 
 import com.kingsrook.qbits.sqlworkbench.SqlWorkbenchQBitConfig;
 import com.kingsrook.qbits.sqlworkbench.SqlWorkbenchSecurity;
+import com.kingsrook.qbits.sqlworkbench.model.CellType;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.model.metadata.MetaDataProducerMultiOutput;
 import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
+import com.kingsrook.qqq.backend.core.model.metadata.code.QCodeReference;
 import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaDataInterface;
+import com.kingsrook.qqq.backend.core.model.metadata.fields.QFieldType;
 import com.kingsrook.qqq.backend.core.model.metadata.joins.QJoinMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.QPossibleValueSource;
+import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.QPossibleValueSourceType;
 import com.kingsrook.qqq.backend.core.model.metadata.qbits.QBitComponentMetaDataProducer;
 import com.kingsrook.qqq.backend.core.model.metadata.security.QSecurityKeyType;
 
@@ -49,6 +54,10 @@ public class SqlWorkbenchSecurityAndJoinsMetaDataProducer extends QBitComponentM
          output.add(keyType);
       }
       output.add(SqlWorkbenchTableMetaDataHelper.buildAudienceTypePossibleValueSource(config));
+      output.add(QPossibleValueSource.newForEnum(config.applyPrefix(CellType.NAME), CellType.values()));
+      output.add(new QPossibleValueSource().withName(config.applyPrefix(WorkbenchBackendPossibleValueProvider.NAME))
+         .withType(QPossibleValueSourceType.CUSTOM).withIdType(QFieldType.STRING)
+         .withCustomCodeReference(new QCodeReference(WorkbenchBackendPossibleValueProvider.class)));
       for(QJoinMetaData join : SqlWorkbenchTableMetaDataHelper.buildJoins(config))
       {
          output.add(join);

src/main/java/com/kingsrook/qbits/sqlworkbench/metadata/SqlWorkbenchTableMetaDataHelper.java

@@ -27,6 +27,7 @@ import com.kingsrook.qbits.sqlworkbench.customizers.CellTableCustomizer;
 import com.kingsrook.qbits.sqlworkbench.customizers.NotebookTableCustomizer;
 import com.kingsrook.qbits.sqlworkbench.customizers.ShareTableCustomizer;
 import com.kingsrook.qbits.sqlworkbench.customizers.SnapshotTableCustomizer;
+import com.kingsrook.qbits.sqlworkbench.model.CellType;
 import com.kingsrook.qbits.sqlworkbench.model.ShareAudienceType;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchCell;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchExecution;
@@ -113,11 +114,12 @@ public class SqlWorkbenchTableMetaDataHelper
          .withSection(new QFieldSection("runner", "Runner", new QIcon("play_circle"), Tier.T2, null).withWidgetName(config.applyPrefix(SqlWorkbenchHomeWidgetsMetaDataProducer.NOTEBOOK_RUNNER)))
          .withSection(new QFieldSection("details", new QIcon("description"), Tier.T2, List.of("defaultBackendName", "parametersJson")))
          .withSection(widgetSection(config, JOIN_NOTEBOOK_CELL, "Cells", "notes"))
-         .withSection(widgetSection(config, JOIN_NOTEBOOK_SHARE, "Shared With", "share"))
-         .withSection(widgetSection(config, JOIN_NOTEBOOK_SNAPSHOT, "Pinned Results", "push_pin"))
+         .withSection(widgetSection(config, JOIN_NOTEBOOK_SHARE, "Shares", "share"))
+         .withSection(widgetSection(config, JOIN_NOTEBOOK_SNAPSHOT, "Snapshots (pinned results)", "push_pin"))
          .withSection(widgetSection(config, JOIN_NOTEBOOK_VERSION, "Versions", "history"))
          .withSection(widgetSection(config, JOIN_NOTEBOOK_EXECUTION, "Runs", "policy"))
          .withSection(new QFieldSection("system", new QIcon("calendar_month"), Tier.T3, List.of("ownerUserId", "currentVersion", "createDate", "modifyDate")));
+      table.getField("defaultBackendName").setPossibleValueSourceName(config.applyPrefix(WorkbenchBackendPossibleValueProvider.NAME));
       table.getField("visibility").setIsEditable(false);
       table.getField("visibility").setIsRequired(false);
       table.getField("visibility").setDefaultValue("PERSONAL");
@@ -142,9 +144,12 @@ public class SqlWorkbenchTableMetaDataHelper
          .withSection(new QFieldSection("identity", new QIcon("badge"), Tier.T1, List.of("id", "notebookId", "sortOrder", "cellType", "title")))
          .withSection(new QFieldSection("content", new QIcon("code"), Tier.T2, List.of("content", "backendName")))
          .withSection(new QFieldSection("system", new QIcon("calendar_month"), Tier.T3, List.of("cellKey", "createDate", "modifyDate")));
+      table.getField("backendName").setPossibleValueSourceName(config.applyPrefix(WorkbenchBackendPossibleValueProvider.NAME));
+      table.getField("cellKey").setIsEditable(false);
       table.getField("cellKey").setIsRequired(false);
+      table.getField("cellType").setPossibleValueSourceName(config.applyPrefix(CellType.NAME));
       table.getField("cellType").setIsRequired(false);
-      table.getField("cellType").setDefaultValue("SQL");
+      table.getField("cellType").setDefaultValue(CellType.SQL.getPossibleValueId());
       table.getField("content").withFieldAdornment(new FieldAdornment(AdornmentType.CODE_EDITOR).withValue(AdornmentType.CodeEditorValues.languageMode("sql")));
       return (customize(linkNotebook(config, table), CellTableCustomizer.class));
    }
@@ -233,6 +238,8 @@ public class SqlWorkbenchTableMetaDataHelper
          .withSection(new QFieldSection("system", new QIcon("calendar_month"), Tier.T3, List.of("createDate")));
       table.getField("sqlText").withFieldAdornment(new FieldAdornment(AdornmentType.CODE_EDITOR).withValue(AdornmentType.CodeEditorValues.languageMode("sql")));
       table.getField("notebookId").setPossibleValueSourceName(config.applyPrefix(SqlWorkbenchNotebook.TABLE_NAME));
+      table.getField("parametersJson").withIsEditable(false)
+         .withFieldAdornment(new FieldAdornment(AdornmentType.CODE_EDITOR).withValue(AdornmentType.CodeEditorValues.languageMode("json")));
       appendOnly(table);
       return (table);
    }
@@ -329,11 +336,11 @@ public class SqlWorkbenchTableMetaDataHelper
          .withOnlyIncludeFieldNames(List.of("id", "sortOrder", "cellType", "title", "backendName", "modifyDate"))
          .getWidgetMetaData());
       widgets.add(ChildRecordListRenderer.widgetMetaDataBuilder(joins.get(config.applyPrefix(JOIN_NOTEBOOK_SHARE)))
-         .withLabel("Shared With").withCanAddChildRecord(true)
+         .withLabel("Shares").withCanAddChildRecord(true)
          .withOnlyIncludeFieldNames(List.of("id", "audienceType", "audienceId", "createdByName", "createDate"))
          .getWidgetMetaData());
       widgets.add(ChildRecordListRenderer.widgetMetaDataBuilder(joins.get(config.applyPrefix(JOIN_NOTEBOOK_SNAPSHOT)))
-         .withLabel("Pinned Results")
+         .withLabel("Snapshots (pinned results)")
          .withOnlyIncludeFieldNames(List.of("id", "label", "cellKey", "rowCount", "truncated", "createDate"))
          .getWidgetMetaData());
       widgets.add(ChildRecordListRenderer.widgetMetaDataBuilder(joins.get(config.applyPrefix(JOIN_NOTEBOOK_VERSION)))

src/main/java/com/kingsrook/qbits/sqlworkbench/metadata/WorkbenchBackendPossibleValueProvider.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2026 Kingsrook, LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.kingsrook.qbits.sqlworkbench.metadata;
+
+
+import java.io.Serializable;
+import java.util.List;
+import com.kingsrook.qbits.sqlworkbench.SqlWorkbenchRuntime;
+import com.kingsrook.qbits.sqlworkbench.engine.WorkbenchBackends;
+import com.kingsrook.qqq.backend.core.actions.values.BasicCustomPossibleValueProvider;
+import com.kingsrook.qqq.backend.core.context.QContext;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.QPossibleValue;
+
+
+/*******************************************************************************
+ ** Backend choices use the same live allow/deny filtering as the Runner.
+ *******************************************************************************/
+public class WorkbenchBackendPossibleValueProvider extends BasicCustomPossibleValueProvider<WorkbenchBackends.Target, String>
+{
+   public static final String NAME = "sql_workbench_backend";
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   protected QPossibleValue<String> makePossibleValue(WorkbenchBackends.Target target)
+   {
+      return (new QPossibleValue<>(target.name(), target.name()));
+   }
+
+
+
+   /*******************************************************************************
+    ** Unknown or excluded stored values have no selectable translation.
+    *******************************************************************************/
+   @Override
+   protected WorkbenchBackends.Target getSourceObject(Serializable id) throws QException
+   {
+      return (getAllSourceObjects().stream().filter(target -> target.name().equals(id)).findFirst().orElse(null));
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   protected List<WorkbenchBackends.Target> getAllSourceObjects() throws QException
+   {
+      return (new WorkbenchBackends(QContext.getQInstance(), SqlWorkbenchRuntime.get()).listTargets());
+   }
+}

src/main/java/com/kingsrook/qbits/sqlworkbench/model/CellType.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2026 Kingsrook, LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.kingsrook.qbits.sqlworkbench.model;
+
+
+import com.kingsrook.qqq.backend.core.model.metadata.possiblevalues.PossibleValueEnum;
+
+
+/*******************************************************************************
+ ** The supported notebook cell types.
+ *******************************************************************************/
+public enum CellType implements PossibleValueEnum<String>
+{
+   SQL,
+   MARKDOWN;
+
+   public static final String NAME = "sql_workbench_cell_type";
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   public String getPossibleValueId()
+   {
+      return (name());
+   }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   @Override
+   public String getPossibleValueLabel()
+   {
+      return (this == SQL ? "SQL" : "Markdown");
+   }
+}

src/main/java/com/kingsrook/qbits/sqlworkbench/notebook/NotebookService.java

@@ -36,6 +36,7 @@ import com.kingsrook.qbits.sqlworkbench.engine.Caller;
 import com.kingsrook.qbits.sqlworkbench.engine.CollectedResult;
 import com.kingsrook.qbits.sqlworkbench.engine.ColumnInfo;
 import com.kingsrook.qbits.sqlworkbench.engine.ResultCache;
+import com.kingsrook.qbits.sqlworkbench.model.CellType;
 import com.kingsrook.qbits.sqlworkbench.model.ShareAudienceType;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchCell;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchNotebook;
@@ -89,8 +90,8 @@ public class NotebookService
 {
    public static final String VISIBILITY_PERSONAL = "PERSONAL";
    public static final String VISIBILITY_SHARED   = "SHARED";
-   public static final String CELL_SQL           = "SQL";
-   public static final String CELL_MARKDOWN      = "MARKDOWN";
+   public static final String CELL_SQL           = CellType.SQL.getPossibleValueId();
+   public static final String CELL_MARKDOWN      = CellType.MARKDOWN.getPossibleValueId();
    public static final int    MAX_CELLS          = 200;
 
    private final SqlWorkbenchRuntime    runtime;

src/test/java/com/kingsrook/qbits/sqlworkbench/SqlWorkbenchQBitProducerTest.java

@@ -20,21 +20,13 @@ package com.kingsrook.qbits.sqlworkbench;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
-import com.kingsrook.qqq.backend.core.exceptions.QException;
-import com.kingsrook.qqq.backend.core.model.metadata.QBackendMetaData;
-import com.kingsrook.qqq.backend.core.context.QContext;
-import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
-import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaData;
-import com.kingsrook.qqq.backend.core.model.metadata.layout.QAppMetaData;
-import com.kingsrook.qqq.backend.core.model.metadata.permissions.PermissionLevel;
-import com.kingsrook.qqq.backend.core.model.metadata.processes.QProcessMetaData;
-import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
-import com.kingsrook.qqq.backend.core.modules.backend.implementations.memory.MemoryBackendModule;
 import com.kingsrook.qbits.sqlworkbench.metadata.SqlWorkbenchAppMetaDataProducer;
 import com.kingsrook.qbits.sqlworkbench.metadata.SqlWorkbenchHomeWidgetsMetaDataProducer;
 import com.kingsrook.qbits.sqlworkbench.metadata.SqlWorkbenchRunnerAppMetaDataProducer;
 import com.kingsrook.qbits.sqlworkbench.metadata.SqlWorkbenchWidgetMetaDataProducer;
 import com.kingsrook.qbits.sqlworkbench.metadata.SqlWorkbenchWidgetRenderer;
+import com.kingsrook.qbits.sqlworkbench.metadata.WorkbenchBackendPossibleValueProvider;
+import com.kingsrook.qbits.sqlworkbench.model.CellType;
 import com.kingsrook.qbits.sqlworkbench.model.ShareAudienceType;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchCell;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchExecution;
@@ -42,6 +34,18 @@ import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchNotebook;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchNotebookShare;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchNotebookVersion;
 import com.kingsrook.qbits.sqlworkbench.model.SqlWorkbenchResultSnapshot;
+import com.kingsrook.qqq.backend.core.context.QContext;
+import com.kingsrook.qqq.backend.core.exceptions.QException;
+import com.kingsrook.qqq.backend.core.model.actions.values.SearchPossibleValueSourceInput;
+import com.kingsrook.qqq.backend.core.model.metadata.QBackendMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
+import com.kingsrook.qqq.backend.core.model.metadata.dashboard.QWidgetMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.fields.AdornmentType;
+import com.kingsrook.qqq.backend.core.model.metadata.layout.QAppMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.permissions.PermissionLevel;
+import com.kingsrook.qqq.backend.core.model.metadata.processes.QProcessMetaData;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
+import com.kingsrook.qqq.backend.core.modules.backend.implementations.memory.MemoryBackendModule;
 import com.kingsrook.qqq.backend.module.rdbms.model.metadata.RDBMSTableBackendDetails;
 import com.kingsrook.qqq.middleware.javalin.QJavalinMetaData;
 import org.junit.jupiter.api.Test;
@@ -108,7 +112,8 @@ class SqlWorkbenchQBitProducerTest extends BaseSqlWorkbenchTest
       QContext.clear();
       assertThat(com.kingsrook.qqq.backend.core.actions.permissions.PermissionsHelper.getAllAvailablePermissionNames(qInstance))
          .contains("sql_workbench_notebook.read", "sql_workbench_notebook_share.insert", "sql_workbench.hasAccess")
-         .doesNotContain("sql_workbench_execution.delete", "sql_workbench_notebook_version.insert");
+         .doesNotContain("sql_workbench_execution.insert", "sql_workbench_execution.edit", "sql_workbench_execution.delete",
+            "sql_workbench_notebook_version.insert", "sql_workbench_notebook_version.edit", "sql_workbench_result_snapshot.insert");
       loginAs(READER);
 
       QWidgetMetaData widget = (QWidgetMetaData) qInstance.getWidget(SqlWorkbenchWidgetMetaDataProducer.NAME);
@@ -155,6 +160,10 @@ class SqlWorkbenchQBitProducerTest extends BaseSqlWorkbenchTest
       assertThat(instance.getTable("ns_sql_workbench_notebook")).isNotNull();
       assertThat(instance.getTable("ns_sql_workbench_cell").getField("notebookId").getPossibleValueSourceName()).isEqualTo("ns_sql_workbench_notebook");
       assertThat(instance.getApp("ns_sqlWorkbench")).isNotNull();
+      assertThat(instance.getTable("ns_sql_workbench_cell").getField("backendName").getPossibleValueSourceName()).isEqualTo("ns_sql_workbench_backend");
+      assertThat(instance.getPossibleValueSource("ns_sql_workbench_backend")).isNotNull();
+      assertThat(instance.getTable("ns_sql_workbench_cell").getField("cellType").getPossibleValueSourceName()).isEqualTo("ns_sql_workbench_cell_type");
+      assertThat(instance.getPossibleValueSource("ns_sql_workbench_cell_type")).isNotNull();
       assertThat(QJavalinMetaData.of(instance)).isNull();
 
       SqlWorkbenchRuntime first = prefixed.getRuntime();
@@ -227,6 +236,70 @@ class SqlWorkbenchQBitProducerTest extends BaseSqlWorkbenchTest
 
 
 
+   /*******************************************************************************
+    ** Record screens expose readable sections and constrained editor fields.
+    *******************************************************************************/
+   @Test
+   void testRecordScreenMetaData() throws Exception
+   {
+      QTableMetaData notebook = qInstance.getTable(SqlWorkbenchNotebook.TABLE_NAME);
+      QTableMetaData cell = qInstance.getTable(SqlWorkbenchCell.TABLE_NAME);
+      assertThat(notebook.getSections()).filteredOn(section -> section.getWidgetName() != null)
+         .extracting(section -> section.getLabel())
+         .containsExactly("Runner", "Cells", "Shares", "Snapshots (pinned results)", "Versions", "Runs");
+      for(var section : notebook.getSections())
+      {
+         if(section.getWidgetName() != null && !"runner".equals(section.getName()))
+         {
+            assertThat(qInstance.getWidget(section.getWidgetName()).getLabel()).isEqualTo(section.getLabel());
+         }
+      }
+      String backendPvs = WorkbenchBackendPossibleValueProvider.NAME;
+      assertThat(notebook.getField("defaultBackendName").getPossibleValueSourceName()).isEqualTo(backendPvs);
+      assertThat(cell.getField("backendName").getPossibleValueSourceName()).isEqualTo(backendPvs);
+      assertThat(qInstance.getPossibleValueSource(backendPvs).getType().name()).isEqualTo("CUSTOM");
+      assertThat(cell.getField("cellKey").getIsEditable()).isFalse();
+      assertThat(qInstance.getTable(SqlWorkbenchResultSnapshot.TABLE_NAME).getField("label").getIsEditable()).isTrue();
+      assertThat(qInstance.getTable(SqlWorkbenchResultSnapshot.TABLE_NAME).getField("resultJson").getIsEditable()).isFalse();
+      assertThat(cell.getField("cellType").getDefaultValue()).isEqualTo("SQL");
+      assertThat(cell.getField("cellType").getPossibleValueSourceName()).isEqualTo(CellType.NAME);
+      assertThat(qInstance.getPossibleValueSource(CellType.NAME).getEnumValues())
+         .extracting(value -> value.getId().toString()).containsExactly("SQL", "MARKDOWN");
+      for(String table : List.of(SqlWorkbenchNotebook.TABLE_NAME, SqlWorkbenchExecution.TABLE_NAME))
+      {
+         var field = qInstance.getTable(table).getField("parametersJson");
+         assertThat(field.getAdornment(AdornmentType.CODE_EDITOR).orElseThrow().getValues())
+            .containsEntry("languageMode", "json");
+         assertThat(field.getIsEditable()).isEqualTo(table.equals(SqlWorkbenchNotebook.TABLE_NAME));
+      }
+   }
+
+
+
+   /*******************************************************************************
+    ** The live backend PVS honors all execution target exclusions.
+    *******************************************************************************/
+   @Test
+   void testBackendChoices() throws Exception
+   {
+      qInstance.addBackend(defineH2Backend("other"));
+      qInstance.addBackend(defineH2Backend("excluded"));
+      qInstance.addBackend(defineH2Backend("h2__sqlWorkbenchReadOnly"));
+      qInstance.addBackend(defineH2Backend("h2__sqlWorkbenchWrite"));
+      qInstance.addBackend(new QBackendMetaData().withName("mem").withBackendType(MemoryBackendModule.class));
+      config.setExcludedBackendNames(List.of("excluded"));
+      var provider = new WorkbenchBackendPossibleValueProvider();
+      var input = new SearchPossibleValueSourceInput();
+      assertThat(provider.search(input)).extracting(value -> value.getId()).containsExactlyInAnyOrder(BACKEND_NAME, "other");
+      assertThat(provider.getPossibleValue(BACKEND_NAME).getLabel()).isEqualTo(BACKEND_NAME);
+      assertThat(provider.getPossibleValue("excluded")).isNull();
+      assertThat(provider.getPossibleValue("unknown")).isNull();
+      config.setAllowedBackendNames(List.of(BACKEND_NAME, "excluded"));
+      assertThat(provider.search(input)).extracting(value -> value.getId()).containsExactly(BACKEND_NAME);
+   }
+
+
+
    /*******************************************************************************
     **
     *******************************************************************************/

src/test/java/com/kingsrook/qbits/sqlworkbench/metadata/AppNavigationTest.java

@@ -118,7 +118,7 @@ class AppNavigationTest extends BaseSqlWorkbenchTest
       assertThat(qInstance.getJoin(SqlWorkbenchTableMetaDataHelper.JOIN_NOTEBOOK_EXECUTION).getRightTable()).isEqualTo(SqlWorkbenchExecution.TABLE_NAME);
       assertThat(qInstance.getWidget(SqlWorkbenchTableMetaDataHelper.JOIN_NOTEBOOK_EXECUTION).getLabel()).isEqualTo("Runs");
       assertThat(notebook.getSections().stream().filter(s -> s.getWidgetName() != null).map(QFieldSection::getLabel).toList())
-         .containsExactly("Runner", "Cells", "Shared With", "Pinned Results", "Versions", "Runs");
+         .containsExactly("Runner", "Cells", "Shares", "Snapshots (pinned results)", "Versions", "Runs");
       assertThat(notebook.getSections().get(0).getFieldNames()).containsExactly("id", "title", "description", "ownerName", "visibility");
    }
 

src/test/java/com/kingsrook/qbits/sqlworkbench/metadata/TableSecurityMatrixTest.java

@@ -53,6 +53,7 @@ import com.kingsrook.qqq.backend.core.exceptions.QNotFoundException;
 import com.kingsrook.qqq.backend.core.exceptions.QPermissionDeniedException;
 import com.kingsrook.qqq.backend.core.model.actions.processes.RunProcessInput;
 import com.kingsrook.qqq.backend.core.model.actions.processes.RunProcessOutput;
+import com.kingsrook.qqq.backend.core.model.actions.reporting.ReportFormat;
 import com.kingsrook.qqq.backend.core.model.actions.tables.count.CountInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.delete.DeleteInput;
 import com.kingsrook.qqq.backend.core.model.actions.tables.delete.DeleteOutput;
@@ -86,7 +87,6 @@ import com.kingsrook.qqq.middleware.javalin.executors.io.TableQueryInput;
 import com.kingsrook.qqq.middleware.javalin.executors.io.TableQueryOutputInterface;
 import com.kingsrook.qqq.middleware.javalin.executors.io.TableUpdateInput;
 import com.kingsrook.qqq.middleware.javalin.executors.io.TableUpdateOutputInterface;
-import com.kingsrook.qqq.backend.core.model.actions.reporting.ReportFormat;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -991,4 +991,38 @@ class TableSecurityMatrixTest extends BaseSqlWorkbenchTest
       static final List<String> ALL = List.of(SqlWorkbenchNotebook.TABLE_NAME, SqlWorkbenchCell.TABLE_NAME, SqlWorkbenchNotebookVersion.TABLE_NAME,
          SqlWorkbenchResultSnapshot.TABLE_NAME, SqlWorkbenchNotebookShare.TABLE_NAME, SqlWorkbenchExecution.TABLE_NAME);
    }
+
+   /*******************************************************************************
+    ** Both insert and update paths reject backend text outside the live PVS.
+    *******************************************************************************/
+   @Test
+   void testBackendSelectionValidation() throws Exception
+   {
+      login(OWNER);
+      Integer notebookId = ids.get("Private");
+      for(String invalid : List.of("unknown", "", BACKEND_NAME))
+      {
+         config.setExcludedBackendNames(invalid.equals(BACKEND_NAME) ? List.of(BACKEND_NAME) : List.of());
+         QRecord notebook = new InsertAction().execute(new InsertInput(SqlWorkbenchNotebook.TABLE_NAME)
+            .withRecord(new QRecord().withValue("title", "Invalid backend").withValue("defaultBackendName", invalid))).getRecords().get(0);
+         assertThat(notebook.getErrors()).isNotEmpty();
+         QRecord changed = new UpdateAction().execute(new UpdateInput(SqlWorkbenchNotebook.TABLE_NAME)
+            .withRecord(new QRecord().withValue("id", notebookId).withValue("defaultBackendName", invalid))).getRecords().get(0);
+         assertThat(changed.getErrors()).isNotEmpty();
+         QRecord cell = new InsertAction().execute(new InsertInput(SqlWorkbenchCell.TABLE_NAME)
+            .withRecord(new QRecord().withValue("notebookId", notebookId).withValue("backendName", invalid))).getRecords().get(0);
+         assertThat(cell.getErrors()).isNotEmpty();
+         Integer cellId = QueryAction.execute(SqlWorkbenchCell.TABLE_NAME,
+            new QQueryFilter(new QFilterCriteria("notebookId", QCriteriaOperator.EQUALS, notebookId))).get(0).getValueInteger("id");
+         QRecord changedCell = new UpdateAction().execute(new UpdateInput(SqlWorkbenchCell.TABLE_NAME)
+            .withRecord(new QRecord().withValue("id", cellId).withValue("backendName", invalid))).getRecords().get(0);
+         assertThat(changedCell.getErrors()).isNotEmpty();
+      }
+      config.setExcludedBackendNames(List.of());
+      QRecord valid = new InsertAction().execute(new InsertInput(SqlWorkbenchCell.TABLE_NAME)
+         .withRecord(new QRecord().withValue("notebookId", notebookId).withValue("backendName", BACKEND_NAME))).getRecords().get(0);
+      assertThat(valid.getErrors()).isNullOrEmpty();
+      assertThat(valid.getValueString("cellKey")).isNotBlank();
+   }
+
 }