diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5d097b..4b411bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,28 @@ and this project uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
 
 ## [Unreleased]
 
+## [0.82.0] - 2026-10-28
+
+Needs DirXMLDev 0.58.0.
+
+### Added
+
+- Library objects that live in another Library of the vault (DirXMLDev #111) are marked
+  **read-only**:
+  - **Outline and Developer view:** a badge, with the Library's DN on hover.
+  - **The object's page:** the source only. There's no Rename, Delete or structured editor, and a
+    note says where the object lives.
+
+  Links to it keep its DN, compare and deploy leave it alone, and the core refuses an edit to it.
+
+### Changed
+
+- Pins DirXMLDev 0.58.0:
+  - `vault.deploy-schema --yes` is behind the agent write gate;
+  - the `idm` CLI in the image refuses arguments a command doesn't take, and a flag no longer
+    takes the next word;
+  - `driver.query` is gated, and `driver.migrate --dry-run` isn't.
+
 ## [0.81.0] - 2026-10-28
 
 Needs DirXMLDev 0.57.0.
diff --git a/docs/features.md b/docs/features.md
index 2608f7b..2e4938a 100644
--- a/docs/features.md
+++ b/docs/features.md
@@ -72,7 +72,9 @@ Every view of the page, by area, in every install; the items marked *local and s
   engine on request (`DriverGetSchema`, the driver stopped) and kept in the tree; the
   application side of the schema map offers its names.
 - **Outline** of the driver set: Library, drivers, policies by channel, configuration files,
-  entitlements, forms, PRDs.
+  entitlements, forms, PRDs. A Library object that lives in another Library of the vault is
+  marked *read-only*. Its page shows the source and where it lives, and offers no edits; links
+  to it keep its DN, and compare and deploy leave it alone.
 - **Policy flow**: the fishbone the VS Code extension draws, from the same model. Hover a policy
   for its description; click it to open it. Click a policy set to open it beside the picture:
   reorder its policies (▲ ▼), unlink one, or link an existing policy or resource — one reviewed
diff --git a/pom.xml b/pom.xml
index 4e9d95a..f7358f9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.pointblue.dirxml</groupId>
     <artifactId>dirxml-dev-web</artifactId>
-    <version>0.81.0</version>
+    <version>0.82.0</version>
     <licenses>
         <license>
             <name>MIT License</name>
@@ -23,7 +23,7 @@
         <!-- The DirXMLDev release this server is written against. Install it once with
              `mvn -o install -DskipTests` in the DirXMLDev checkout; bin/idmweb then runs
              against that checkout's classes, engine jars and simulator. -->
-        <dirxmldev.version>0.57.0</dirxmldev.version>
+        <dirxmldev.version>0.58.0</dirxmldev.version>
         <simulator.version>1.7.0</simulator.version>
         <!-- the DirXML Trace Viewer's library: parser, highlighter, LDAP trace source (its release attaches the jar) -->
         <!-- Directory Console's shared libraries (console-auth: OIDC sign-in, TLS trust). Install with
diff --git a/src/main/java/com/pointblue/dirxml/web/Serve.java b/src/main/java/com/pointblue/dirxml/web/Serve.java
index 9e4042a..310ef07 100644
--- a/src/main/java/com/pointblue/dirxml/web/Serve.java
+++ b/src/main/java/com/pointblue/dirxml/web/Serve.java
@@ -14,7 +14,7 @@
  */
 public final class Serve {
 
-    public static final String VERSION = "0.81.0";
+    public static final String VERSION = "0.82.0";
 
     private Serve() {
     }
diff --git a/src/main/java/com/pointblue/dirxml/web/TreeService.java b/src/main/java/com/pointblue/dirxml/web/TreeService.java
index 3bbf1ed..7fdf2a1 100644
--- a/src/main/java/com/pointblue/dirxml/web/TreeService.java
+++ b/src/main/java/com/pointblue/dirxml/web/TreeService.java
@@ -136,8 +136,8 @@ public synchronized Map<String, Object> outline() throws IOException {
         set.put("schema", ds.schema == null ? null : ds.schema.summary());
         o.put("driverSet", set);
         Map<String, Object> lib = new LinkedHashMap<>();
-        lib.put("policies", nodes(ds.library.policies, files));
-        lib.put("resources", nodes(ds.library.resources, files));
+        lib.put("policies", nodes(ds, ds.library.policies, files));
+        lib.put("resources", nodes(ds, ds.library.resources, files));
         o.put("library", lib);
         List<Object> drivers = new ArrayList<>();
         for (Driver d : ds.drivers) {
@@ -153,11 +153,11 @@ public synchronized Map<String, Object> outline() throws IOException {
             }
             m.put("config", existing(config));
             Map<String, Object> policies = new LinkedHashMap<>();
-            policies.put("driver", nodes(d.policies, files));
-            policies.put("subscriber", nodes(d.subscriber.policies, files));
-            policies.put("publisher", nodes(d.publisher.policies, files));
+            policies.put("driver", nodes(ds, d.policies, files));
+            policies.put("subscriber", nodes(ds, d.subscriber.policies, files));
+            policies.put("publisher", nodes(ds, d.publisher.policies, files));
             m.put("policies", policies);
-            m.put("resources", nodes(d.resources, files));
+            m.put("resources", nodes(ds, d.resources, files));
             List<Object> ents = new ArrayList<>();
             for (Entitlement e : d.entitlements) {
                 ents.add(fileNode(e.name, dir + "/entitlements/" + AsCodeWriter.fileSafe(e.name) + ".xml"));
@@ -203,7 +203,7 @@ public synchronized Map<String, Object> outline() throws IOException {
         return o;
     }
 
-    private List<Object> nodes(List<? extends Artifact> artifacts, Map<String, String> files) {
+    private List<Object> nodes(DriverSet ds, List<? extends Artifact> artifacts, Map<String, String> files) {
         List<Object> out = new ArrayList<>();
         for (Artifact a : artifacts) {
             Map<String, Object> n = new LinkedHashMap<>();
@@ -211,6 +211,11 @@ private List<Object> nodes(List<? extends Artifact> artifacts, Map<String, Strin
             n.put("name", a.name);
             n.put("kind", kindOf(a));
             n.put("file", files.get(a.path()));
+            // a Library object from another Library: a read-only reference (DirXMLDev 0.58.0, #111)
+            String other = com.pointblue.dirxml.dev.model.Libraries.outside(ds, a);
+            if (other != null) {
+                n.put("readOnly", other);
+            }
             out.add(n);
         }
         return out;
@@ -262,7 +267,9 @@ public synchronized Map<String, Object> artifact(String path) throws IOException
         m.put("file", file);
         m.put("language", language(file));
         m.put("content", file == null ? "" : Files.readString(tree.resolve(file), StandardCharsets.UTF_8));
-        m.put("editable", file != null);
+        String other = com.pointblue.dirxml.dev.model.Libraries.outside(ds, a);
+        m.put("editable", file != null && other == null);
+        m.put("readOnly", other);
         m.put("packaged", a.meta.keySet().stream().anyMatch(k -> k.toLowerCase().startsWith("dirxml-pkg") || k.equals("package-id")));
         List<Object> refs = new ArrayList<>();
         // a mapping table also names the drivers that run a policy reading it (DirXMLDev 0.34.0)
@@ -410,10 +417,10 @@ public synchronized Map<String, Object> developer() throws IOException {
         // the library
         Map<String, Object> lib = node("library", "Library", "folder", null);
         List<Object> lk = kids(lib);
-        for (Object n : nodes(ds.library.policies, files)) {
+        for (Object n : nodes(ds, ds.library.policies, files)) {
             lk.add(artifactLeaf("lib", n));
         }
-        for (Object n : nodes(ds.library.resources, files)) {
+        for (Object n : nodes(ds, ds.library.resources, files)) {
             lk.add(artifactLeaf("lib", n));
         }
         rootKids.add(lib);
@@ -458,7 +465,7 @@ public synchronized Map<String, Object> developer() throws IOException {
                     rk.add(boneNode(d.name, b));
                 }
             }
-            for (Object n : nodes(d.resources, files)) {
+            for (Object n : nodes(ds, d.resources, files)) {
                 rk.add(artifactLeaf("res:" + d.name, n));
             }
             dkids.add(res);
@@ -551,7 +558,11 @@ private static Map<String, Object> boneNode(String driver, Map<String, Object> b
     @SuppressWarnings("unchecked")
     private static Map<String, Object> artifactLeaf(String prefix, Object nodeMap) {
         Map<String, Object> n = (Map<String, Object>) nodeMap;
-        return leaf(prefix + ":" + n.get("path"), String.valueOf(n.get("name")), String.valueOf(n.get("kind")), Map.of("type", "artifact", "path", String.valueOf(n.get("path"))));
+        Map<String, Object> l = leaf(prefix + ":" + n.get("path"), String.valueOf(n.get("name")), String.valueOf(n.get("kind")), Map.of("type", "artifact", "path", String.valueOf(n.get("path"))));
+        if (n.get("readOnly") != null) {
+            l.put("readOnly", n.get("readOnly"));
+        }
+        return l;
     }
 
     private static String configLabel(String kind) {
diff --git a/src/test/java/com/pointblue/dirxml/web/ReadOnlyLibraryTest.java b/src/test/java/com/pointblue/dirxml/web/ReadOnlyLibraryTest.java
new file mode 100644
index 0000000..40d173b
--- /dev/null
+++ b/src/test/java/com/pointblue/dirxml/web/ReadOnlyLibraryTest.java
@@ -0,0 +1,65 @@
+package com.pointblue.dirxml.web;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import com.pointblue.dirxml.dev.ascode.AsCodeWriter;
+import com.pointblue.dirxml.dev.model.DriverSet;
+import com.pointblue.dirxml.dev.model.DuplicateArtifacts;
+import com.pointblue.dirxml.dev.model.Resource;
+import com.pointblue.dirxml.dev.model.Scope;
+
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Map;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+
+/** A Library object from another Library is shown read-only: the outline, the Developer tree, the artifact (DirXMLDev #111). */
+public class ReadOnlyLibraryTest {
+
+    @Rule
+    public TemporaryFolder tmp = new TemporaryFolder();
+
+    private static final String SHARED = "cn=Library,ou=shared,o=system";
+
+    private static Resource js(String name) {
+        Resource r = new Resource(name, Scope.LIBRARY, null, Resource.ECMASCRIPT);
+        r.text = "function " + name.replace('-', '_') + "(){}";
+        return r;
+    }
+
+    @Test
+    @SuppressWarnings("unchecked")
+    public void theOtherLibrarysObjectIsReadOnly() throws Exception {
+        DriverSet ds = new DriverSet("DS");
+        ds.dn = "cn=DS,o=system";
+        ds.library.resources.add(js("es-own"));
+        Resource shared = js("es-shared");
+        shared.meta.put(DuplicateArtifacts.LIBRARY_DN, SHARED);
+        ds.library.resources.add(shared);
+        Path tree = tmp.newFolder("tree").toPath();
+        AsCodeWriter.write(ds, tree);
+        try (Watcher w = new Watcher(tree, 10_000)) {
+            TreeService service = new TreeService(tree, w);
+
+            Map<String, Object> other = service.artifact("library/es-shared");
+            assertEquals(SHARED, other.get("readOnly"));
+            assertEquals(false, other.get("editable"));
+            Map<String, Object> own = service.artifact("library/es-own");
+            assertNull(own.get("readOnly"));
+            assertEquals(true, own.get("editable"));
+
+            List<Map<String, Object>> resources = (List<Map<String, Object>>) ((Map<String, Object>) service.outline().get("library")).get("resources");
+            for (Map<String, Object> n : resources) {
+                assertEquals(n.get("name").equals("es-shared") ? SHARED : null, n.get("readOnly"));
+            }
+            String dev = String.valueOf(service.developer());
+            assertTrue(dev, dev.contains("readOnly=" + SHARED));
+            assertFalse(dev.contains("readOnly=null"));
+        }
+    }
+}
diff --git a/web/src/components/ArtifactView.tsx b/web/src/components/ArtifactView.tsx
index 4ae7c73..0ab4380 100644
--- a/web/src/components/ArtifactView.tsx
+++ b/web/src/components/ArtifactView.tsx
@@ -69,7 +69,7 @@ export function ArtifactView({ path, revision, onOpen, onSaved, onGone, onMoved
         setError(null);
         setChangedOnDisk(false);
         setDraft(null);
-        setTab((t) => (t === "structured" && !STRUCTURED[a.kind] ? "source" : t));
+        setTab((t) => (t === "structured" && (a.readOnly || !STRUCTURED[a.kind]) ? "source" : t));
       })
       .catch((e: Error) => !gone && setError(e.message));
     return () => {
@@ -119,7 +119,8 @@ export function ArtifactView({ path, revision, onOpen, onSaved, onGone, onMoved
     setChangedOnDisk(false);
   };
 
-  const structuredLabel = STRUCTURED[artifact.kind];
+  // a Library object from another Library is shown, not edited: the source only (#111)
+  const structuredLabel = artifact.readOnly ? undefined : STRUCTURED[artifact.kind];
 
   return (
     <div className="view">
@@ -129,12 +130,18 @@ export function ArtifactView({ path, revision, onOpen, onSaved, onGone, onMoved
             {artifact.kind} · {artifact.scope}
             {artifact.driver ? ` · ${artifact.driver}` : ""}
             {artifact.packaged ? " · packaged" : ""}
+            {artifact.readOnly ? " · read-only" : ""}
           </div>
           <h2>{artifact.name}</h2>
           <div className="muted small">{artifact.file ?? artifact.path}</div>
+          {artifact.readOnly && (
+            <div className="muted small readonly-note" data-testid="artifact-readonly">
+              Lives in <span title={artifact.readOnly}>{artifact.readOnly}</span>, outside the driver set's Library. Drivers' links to it keep its DN; compare and deploy leave it alone. Change it in Designer, or in that Library.
+            </div>
+          )}
         </div>
         <div className="actions">
-          {!editing && pending.ops.length === 0 && (
+          {!editing && pending.ops.length === 0 && !artifact.readOnly && (
             <>
               <button onClick={() => (setNewName(artifact.name), setRenaming(true))} title="Rename it, and rewrite every reference to it (links, includes, Map tokens)" data-testid="artifact-rename">
                 Rename…
diff --git a/web/src/components/DeveloperView.tsx b/web/src/components/DeveloperView.tsx
index e77a4e8..847d7eb 100644
--- a/web/src/components/DeveloperView.tsx
+++ b/web/src/components/DeveloperView.tsx
@@ -126,6 +126,11 @@ export function DeveloperView({ revision, onSelect }: { revision: string; onSele
           )}
           {n.kind === "driver" && n.typeName && n.typeName !== n.label && <span className="muted small"> {n.typeName}</span>}
           {n.unresolved && <span className="pill warn">unresolved</span>}
+          {n.readOnly && (
+            <span className="pill" title={`Lives in ${n.readOnly}, outside the driver set's Library; read-only here`}>
+              read-only
+            </span>
+          )}
           {st && <span className={"pill " + (st.state.toLowerCase().includes("running") ? "ok" : st.state.toLowerCase().includes("disabled") ? "err" : "")}>{st.state}</span>}
           {folder && n.count !== undefined && <span className="muted small count">{n.count}</span>}
         </div>
diff --git a/web/src/components/OutlineTree.tsx b/web/src/components/OutlineTree.tsx
index 8f106f4..d302061 100644
--- a/web/src/components/OutlineTree.tsx
+++ b/web/src/components/OutlineTree.tsx
@@ -36,8 +36,17 @@ export function OutlineTree({ outline, selection, onSelect }: Props) {
         <ul>
           {nodes.map((n) => (
             <li key={n.path}>
-              <button className={isArtifact(n.path) ? "leaf active" : "leaf"} onClick={() => onSelect({ type: "artifact", path: n.path })} title={n.path}>
+              <button
+                className={isArtifact(n.path) ? "leaf active" : "leaf"}
+                onClick={() => onSelect({ type: "artifact", path: n.path })}
+                title={n.readOnly ? `${n.path}: lives in ${n.readOnly}, outside the driver set's Library; read-only here` : n.path}
+              >
                 <span className="badge">{KIND_BADGE[n.kind] ?? "·"}</span>
+                {n.readOnly && (
+                  <span className="pill ro" data-testid={`readonly-${n.path}`}>
+                    read-only
+                  </span>
+                )}
                 {n.name}
               </button>
             </li>
diff --git a/web/src/styles.css b/web/src/styles.css
index 684388d..3055d3a 100644
--- a/web/src/styles.css
+++ b/web/src/styles.css
@@ -1533,3 +1533,13 @@ a.button { display: inline-block; padding: 5px 10px; border: 1px solid var(--bor
     height: 60vh;
   }
 }
+
+/* a Library object from another Library (#111) */
+.leaf .pill.ro {
+  margin-right: 6px;
+  font-size: 0.85em;
+}
+.readonly-note {
+  margin-top: 4px;
+  max-width: 60em;
+}
diff --git a/web/src/types.ts b/web/src/types.ts
index 2bbe42b..ff0a546 100644
--- a/web/src/types.ts
+++ b/web/src/types.ts
@@ -113,6 +113,8 @@ export interface ArtifactNode {
   name: string;
   kind: string;
   file: string | null;
+  /** A Library object from another Library: the DN of the Library it lives in; read-only here. */
+  readOnly?: string;
 }
 
 export interface FileNode {
@@ -174,6 +176,8 @@ export interface Artifact {
   language: string;
   content: string;
   editable: boolean;
+  /** A Library object from another Library: the DN of the Library it lives in; read-only here. */
+  readOnly?: string | null;
   packaged: boolean;
   refs: Ref[];
 }
@@ -1188,6 +1192,7 @@ export interface DevNode {
   shimClass?: string | null;
   icon?: boolean;
   unresolved?: boolean;
+  readOnly?: string;
 }
 
 /** A project put away (#76): its bundle and what moved aside. */