diff --git a/docs/INSTALL.md b/docs/INSTALL.md
index 44042e2..007a803 100644
--- a/docs/INSTALL.md
+++ b/docs/INSTALL.md
@@ -9,7 +9,7 @@ One install wires **all of**:
 | Host tools | Capability groups **ops / topology** (one group ↔ one skill). Default ops in Ops preset; topology and all public off. Other agents may mount `dsh-netxops/tools-ops|topology` |
 | Companion plugins | **dsh-im-ops** + **dsh-ops-cron** — add as **direct** profile deps in the same command (DSH/pnpm blocks `github:` as transitive deps) |
 | Plugins card | Settings → Plugins → **Netx Ops** (URL / API lang / thinking+reply language / token / capability groups) |
-| Agent preset + skills | Settings → Agent presets → **Netx Ops**. Host composes from shipped **standard** + Netx Ops overlays (no preset inheritance): web uses `~/.dsh/.agent-presets/netxops`; Desktop 0.2 also syncs a declarative `@deepseek-ai/dsh-agent-preset` row into the profile patch. Restart Desktop once after upgrade. Playbooks follow the same group toggles |
+| Agent preset + skills | Settings → Agent presets → **Netx Ops**. Host composes from **this host's** shipped **standard** + Netx Ops overlays (no preset inheritance): Desktop 0.2 prefers `@deepseek-ai/dsh-web-app/presets/standard.patch.yml` (`workflow-ptc`); web/CLI use `dsh-agent-presets` directory standard. Web installs land in `~/.dsh/.agent-presets/netxops`; Desktop also syncs a declarative `@deepseek-ai/dsh-agent-preset` row into the profile patch. Restart Desktop once after upgrade. Playbooks follow the same group toggles |
 
 You do **not** run `link-preset.ps1` for normal use. That script is only a manual fallback.
 
diff --git a/lib/index.js b/lib/index.js
index 4aef007..d614f16 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -22,6 +22,7 @@ import { fileURLToPath } from "node:url";
 var NETXOPS_PRESET_ID = "netxops";
 var DESKTOP_PATCH_BEGIN = "# BEGIN dsh-netxops-preset (managed)";
 var DESKTOP_PATCH_END = "# END dsh-netxops-preset (managed)";
+var PATCH_PLUGIN_INDENT = "          ";
 function packageRoot() {
   return join(dirname(fileURLToPath(import.meta.url)), "..");
 }
@@ -31,22 +32,72 @@ function resolveDshHome() {
     return fromEnv;
   return join(homedir(), ".dsh");
 }
+function electronResourcesRoots() {
+  const roots = [];
+  const rp = process.resourcesPath;
+  if (typeof rp === "string" && rp.length > 0)
+    roots.push(rp);
+  roots.push(join(dirname(process.execPath), "resources"));
+  return roots;
+}
+function readableFile(path) {
+  try {
+    readFileSync(path, { encoding: "utf8", flag: "r" });
+    return true;
+  } catch {
+    return false;
+  }
+}
+function resolveDesktopStandardPatchPath() {
+  const dshHome = resolveDshHome();
+  const envOverride = process.env.NETXOPS_STANDARD_PATCH?.trim();
+  const candidates = [];
+  if (envOverride)
+    candidates.push(envOverride);
+  for (const resources of electronResourcesRoots()) {
+    candidates.push(join(resources, "app.asar", "dsh", "node_modules", "@deepseek-ai", "dsh-web-app", "presets", "standard.patch.yml"), join(resources, "app.asar.unpacked", "dsh", "node_modules", "@deepseek-ai", "dsh-web-app", "presets", "standard.patch.yml"));
+  }
+  const requireAnchors = [
+    join(dshHome, "profiles", "desktop", "package.json"),
+    join(dshHome, "profiles", "desktop", "node_modules", "dsh-netxops", "package.json"),
+    join(packageRoot(), "package.json"),
+    join(dshHome, "profiles", "node_modules", "@deepseek-ai", "dsh-web-app", "package.json"),
+    join(dshHome, "profiles", "web", "package.json")
+  ];
+  for (const anchor of requireAnchors) {
+    if (!existsSync(anchor))
+      continue;
+    try {
+      const req = createRequire2(anchor);
+      try {
+        candidates.push(req.resolve("@deepseek-ai/dsh-web-app/presets/standard.patch.yml"));
+      } catch {}
+      const pkg = dirname(req.resolve("@deepseek-ai/dsh-web-app/package.json"));
+      candidates.push(join(pkg, "presets", "standard.patch.yml"));
+    } catch {}
+  }
+  for (const path of candidates) {
+    if (readableFile(path))
+      return path;
+  }
+  return null;
+}
 function resolveStandardPresetDir() {
   const dshHome = resolveDshHome();
   const candidates = [
-    join(dshHome, "profiles", "node_modules", "@deepseek-ai", "dsh-agent-presets", "presets", "standard"),
-    join(dshHome, "profiles", "web", "node_modules", "@deepseek-ai", "dsh-agent-presets", "presets", "standard"),
     join(dshHome, "profiles", "desktop", "node_modules", "@deepseek-ai", "dsh-agent-presets", "presets", "standard"),
-    join(dirname(fileURLToPath(import.meta.url)), "..", "..", "DeepSeekHarness", "packages", "preset", "agent-presets", "presets", "standard")
+    join(dshHome, "profiles", "web", "node_modules", "@deepseek-ai", "dsh-agent-presets", "presets", "standard"),
+    join(dirname(fileURLToPath(import.meta.url)), "..", "..", "DeepSeekHarness", "packages", "preset", "agent-presets", "presets", "standard"),
+    join(dshHome, "profiles", "node_modules", "@deepseek-ai", "dsh-agent-presets", "presets", "standard")
   ];
   for (const dir of candidates) {
     if (existsSync(join(dir, "agent.cordis.yml")))
       return dir;
   }
   for (const nm of [
-    join(dshHome, "profiles", "node_modules"),
+    join(dshHome, "profiles", "desktop", "node_modules"),
     join(dshHome, "profiles", "web", "node_modules"),
-    join(dshHome, "profiles", "desktop", "node_modules")
+    join(dshHome, "profiles", "node_modules")
   ]) {
     const pkgJson = join(nm, "@deepseek-ai", "dsh-agent-presets", "package.json");
     if (!existsSync(pkgJson))
@@ -68,6 +119,155 @@ function resolveStandardPresetDir() {
   } catch {}
   return null;
 }
+function desktopRuntimeLikelyPresent() {
+  if (typeof process.versions.electron === "string")
+    return true;
+  for (const resources of electronResourcesRoots()) {
+    if (existsSync(join(resources, "app.asar")))
+      return true;
+  }
+  const localAppData = process.env.LOCALAPPDATA?.trim();
+  if (localAppData) {
+    if (existsSync(join(localAppData, "Programs", "DeepSeek Harness", "resources", "app.asar"))) {
+      return true;
+    }
+  }
+  return false;
+}
+function hostResolveBases() {
+  const dshHome = resolveDshHome();
+  const bases = [];
+  for (const resources of electronResourcesRoots()) {
+    bases.push(join(resources, "app.asar", "dsh", "package.json"));
+    bases.push(join(resources, "app.asar", "dsh", "node_modules"));
+  }
+  const localAppData = process.env.LOCALAPPDATA?.trim();
+  if (localAppData) {
+    const asarDsh = join(localAppData, "Programs", "DeepSeek Harness", "resources", "app.asar", "dsh");
+    bases.push(join(asarDsh, "package.json"), join(asarDsh, "node_modules"));
+  }
+  bases.push(join(dshHome, "profiles", "desktop", "package.json"), join(dshHome, "profiles", "desktop", "node_modules"), join(dshHome, "profiles", "web", "package.json"), join(dshHome, "profiles", "web", "node_modules"), join(dshHome, "profiles", "node_modules"), join(packageRoot(), "package.json"));
+  return [...new Set(bases.filter((path) => path.includes("app.asar") || existsSync(path)))];
+}
+function packageInstalledAbove(name, bases) {
+  if (name.startsWith("cordis:") || name.startsWith("node:"))
+    return true;
+  const pkg = name.split("/").slice(0, name.startsWith("@") ? 2 : 1).join("/");
+  for (const base of bases) {
+    let dir = base.endsWith("package.json") ? dirname(base) : base;
+    for (;; ) {
+      if (readableFile(join(dir, "node_modules", pkg, "package.json")))
+        return true;
+      if (readableFile(join(dir, pkg, "package.json")))
+        return true;
+      const parent = dirname(dir);
+      if (parent === dir)
+        break;
+      dir = parent;
+    }
+    const requireAnchor = base.endsWith("package.json") ? base : existsSync(join(base, "package.json")) ? join(base, "package.json") : null;
+    if (requireAnchor !== null) {
+      try {
+        createRequire2(requireAnchor).resolve(`${pkg}/package.json`);
+        return true;
+      } catch {}
+    }
+  }
+  return false;
+}
+function collectCompositionPackageNames(yaml) {
+  const names = [];
+  for (const match of yaml.matchAll(/^\s*name:\s*(.+)$/gm)) {
+    let raw = match[1].trim();
+    if (raw.startsWith("'") && raw.endsWith("'") || raw.startsWith('"') && raw.endsWith('"')) {
+      raw = raw.slice(1, -1);
+    }
+    if (raw.length === 0)
+      continue;
+    if (raw.startsWith("./") || raw.startsWith("../") || raw.startsWith("file:"))
+      continue;
+    names.push(raw);
+  }
+  return [...new Set(names)];
+}
+function unresolvableCompositionPackages(yaml, bases) {
+  return collectCompositionPackageNames(yaml).filter((name) => !packageInstalledAbove(name, bases));
+}
+function remapWorkflowToPtc(cordis) {
+  return cordis.replaceAll("- id: workflow-worker-thread", "- id: workflow-ptc").replaceAll("@deepseek-ai/dsh-workflow-worker-thread", "@deepseek-ai/dsh-workflow-ptc");
+}
+function remapWorkflowToWorkerThread(cordis) {
+  return cordis.replaceAll("- id: workflow-ptc", "- id: workflow-worker-thread").replaceAll("@deepseek-ai/dsh-workflow-ptc", "@deepseek-ai/dsh-workflow-worker-thread");
+}
+function alignWorkflowEngineForHost(cordis, bases, host = "auto") {
+  const hasPtc = packageInstalledAbove("@deepseek-ai/dsh-workflow-ptc", bases);
+  const hasWorker = packageInstalledAbove("@deepseek-ai/dsh-workflow-worker-thread", bases);
+  const desktop = host === "desktop" || host === "auto" && desktopRuntimeLikelyPresent();
+  if (hasPtc && !hasWorker)
+    return remapWorkflowToPtc(cordis);
+  if (hasPtc && hasWorker && desktop)
+    return remapWorkflowToPtc(cordis);
+  if (!hasPtc && hasWorker && desktop) {
+    return remapWorkflowToPtc(cordis);
+  }
+  if (!hasPtc && !hasWorker && desktop && cordis.includes("workflow-worker-thread")) {
+    return remapWorkflowToPtc(cordis);
+  }
+  if (hasWorker && !hasPtc && !desktop)
+    return remapWorkflowToWorkerThread(cordis);
+  if (hasWorker && hasPtc && host === "web")
+    return remapWorkflowToWorkerThread(cordis);
+  return cordis;
+}
+function extractPluginsBodyFromStandardPatch(patchYaml) {
+  const text = patchYaml.replace(/\r\n/g, `
+`);
+  const marker = /^([ \t]*)plugins:\s*$/m;
+  const match = marker.exec(text);
+  if (match === null) {
+    throw new Error("standard.patch.yml has no plugins: block");
+  }
+  const pluginsKeyIndent = match[1].length;
+  const start = match.index + match[0].length;
+  const rest = text.slice(start).replace(/^\n/, "");
+  const lines = rest.split(`
+`);
+  const body = [];
+  for (const line of lines) {
+    if (line.trim() === "") {
+      body.push(line);
+      continue;
+    }
+    const indent = line.match(/^[ \t]*/)?.[0].length ?? 0;
+    if (indent <= pluginsKeyIndent)
+      break;
+    body.push(line);
+  }
+  while (body.length > 0 && body[body.length - 1].trim() === "")
+    body.pop();
+  return body.join(`
+`);
+}
+function pluginsBodyToAgentCordis(pluginsBody) {
+  const prefix = PATCH_PLUGIN_INDENT;
+  return `${pluginsBody.replace(/\r\n/g, `
+`).split(`
+`).map((line) => {
+    if (line.length === 0)
+      return "";
+    if (line.startsWith(prefix))
+      return line.slice(prefix.length);
+    return line.trimStart();
+  }).join(`
+`).trimEnd()}
+`;
+}
+function agentCordisToPluginsBody(agentCordis) {
+  return agentCordis.replace(/\r\n/g, `
+`).split(`
+`).map((line) => line.length === 0 ? "" : `${PATCH_PLUGIN_INDENT}${line}`).join(`
+`);
+}
 function replaceTopLevelEntry(cordis, id, replacement) {
   const lines = cordis.replace(/\r\n/g, `
 `).split(`
@@ -146,6 +346,9 @@ function readPresetMeta(metaPath) {
     order: (metaText.match(/^order:\s*(\d+)/m) || [])[1] || "50"
   };
 }
+function desktopProfilePresent() {
+  return existsSync(join(resolveDshHome(), "profiles", "desktop"));
+}
 function composeNetxopsPresetArtifacts() {
   const overlayRoot = join(packageRoot(), "presets", NETXOPS_PRESET_ID);
   const personaPath = join(overlayRoot, "PERSONA.md");
@@ -153,21 +356,43 @@ function composeNetxopsPresetArtifacts() {
   if (!existsSync(personaPath) || !existsSync(metaPath)) {
     throw new Error(`bundled preset overlay missing under ${overlayRoot}`);
   }
-  const standardDir = resolveStandardPresetDir();
-  if (standardDir === null) {
-    throw new Error("cannot find shipped standard preset (@deepseek-ai/dsh-agent-presets)");
-  }
   const meta = readPresetMeta(metaPath);
-  let agentCordis = replaceTopLevelEntry(readFileSync(join(standardDir, "agent.cordis.yml"), "utf8"), "persona", personaEntryFromMarkdown(readFileSync(personaPath, "utf8")));
+  const bases = hostResolveBases();
+  const patchPath = resolveDesktopStandardPatchPath();
+  const usePatch = patchPath !== null && process.env.NETXOPS_PREFER_DESKTOP_PATCH !== "0" && (typeof process.versions.electron === "string" || process.env.NETXOPS_PREFER_DESKTOP_PATCH === "1" || desktopProfilePresent() || desktopRuntimeLikelyPresent());
+  let standardSource;
+  let standardKind;
+  let standardDir;
+  let agentCordis;
+  if (usePatch && patchPath !== null) {
+    standardSource = patchPath;
+    standardKind = "desktop-patch";
+    standardDir = null;
+    agentCordis = pluginsBodyToAgentCordis(extractPluginsBodyFromStandardPatch(readFileSync(patchPath, "utf8")));
+  } else {
+    const dir = resolveStandardPresetDir();
+    if (dir === null) {
+      throw new Error("cannot find host standard preset (Desktop standard.patch.yml or @deepseek-ai/dsh-agent-presets)");
+    }
+    standardSource = dir;
+    standardKind = "directory";
+    standardDir = dir;
+    agentCordis = readFileSync(join(dir, "agent.cordis.yml"), "utf8");
+  }
+  agentCordis = replaceTopLevelEntry(agentCordis, "persona", personaEntryFromMarkdown(readFileSync(personaPath, "utf8")));
   agentCordis = ensureNetxopsToolsRow(agentCordis);
+  agentCordis = alignWorkflowEngineForHost(agentCordis, bases);
   if (!agentCordis.endsWith(`
 `))
     agentCordis += `
 `;
-  const pluginsBody = agentCordis.replace(/\r\n/g, `
-`).split(`
-`).map((line) => line.length === 0 ? "" : `          ${line}`).join(`
-`);
+  const missing = unresolvableCompositionPackages(agentCordis, bases).filter((name) => !name.startsWith("dsh-netxops"));
+  const desktopAsar = desktopRuntimeLikelyPresent();
+  const blocking = missing.filter((name) => !(desktopAsar && name.startsWith("@deepseek-ai/")));
+  if (blocking.length > 0) {
+    throw new Error(`composed Netx Ops preset names packages the host cannot resolve: ${blocking.join(", ")} ` + `(standard-source: ${standardSource})`);
+  }
+  const pluginsBody = agentCordisToPluginsBody(agentCordis);
   const declarativePatch = `# Declarative Netx Ops preset for Desktop 0.2 (@deepseek-ai/dsh-agent-preset).
 # Generated from host \`standard\` + presets/netxops overlays — do not hand-edit.
 # Regenerate: bun run scripts/gen-preset-patch.mjs
@@ -183,7 +408,7 @@ function composeNetxopsPresetArtifacts() {
         plugins:
 ${pluginsBody}
 `;
-  return { standardDir, ...meta, agentCordis, declarativePatch };
+  return { standardSource, standardKind, standardDir, ...meta, agentCordis, declarativePatch };
 }
 function installDirectoryPreset(artifacts, logger) {
   const overlayRoot = join(packageRoot(), "presets", NETXOPS_PRESET_ID);
@@ -192,7 +417,10 @@ function installDirectoryPreset(artifacts, logger) {
   mkdirSync(destParent, { recursive: true });
   if (existsSync(dest))
     rmSync(dest, { recursive: true, force: true });
-  cpSync(artifacts.standardDir, dest, { recursive: true });
+  mkdirSync(dest, { recursive: true });
+  if (artifacts.standardDir !== null && existsSync(artifacts.standardDir)) {
+    cpSync(artifacts.standardDir, dest, { recursive: true });
+  }
   writeFileSync(join(dest, "preset.yml"), readFileSync(join(overlayRoot, "preset.yml"), "utf8"));
   writeFileSync(join(dest, "PERSONA.md"), readFileSync(join(overlayRoot, "PERSONA.md"), "utf8"));
   writeFileSync(join(dest, "agent.cordis.yml"), artifacts.agentCordis);
@@ -200,13 +428,13 @@ function installDirectoryPreset(artifacts, logger) {
   if (existsSync(skillsSrc))
     cpSync(skillsSrc, join(dest, "skills"), { recursive: true });
   writeFileSync(join(dest, ".dsh-netxops-managed"), [
-    "composed-from: standard",
-    `standard-source: ${artifacts.standardDir}`,
+    `composed-from: ${artifacts.standardKind}`,
+    `standard-source: ${artifacts.standardSource}`,
     `at: ${new Date().toISOString()}`,
     ""
   ].join(`
 `), "utf8");
-  logger.info("netxops: directory preset composed from standard → %s", dest);
+  logger.info("netxops: directory preset composed from %s → %s", artifacts.standardSource, dest);
 }
 function syncDeclarativeIntoProfilePatch(profileName, declarativePatch, logger) {
   if (profileName !== "desktop")
diff --git a/package.json b/package.json
index 2f0f08d..3c42576 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dsh-netxops",
-  "version": "0.1.48",
+  "version": "0.1.49",
   "description": "DeepSeek Harness Netx Ops: ops/topology + IM delivery + session export + knowledge-base MANIFEST/_skills + localSkills",
   "license": "MIT",
   "type": "module",
diff --git a/presets/netxops.preset.patch.yml b/presets/netxops.preset.patch.yml
index ecb4a27..c187d3a 100644
--- a/presets/netxops.preset.patch.yml
+++ b/presets/netxops.preset.patch.yml
@@ -314,8 +314,8 @@
                   backgroundMode: one-shot
                   maxDepth: provider-managed
 
-              - id: workflow-worker-thread
-                name: '@deepseek-ai/dsh-workflow-worker-thread'
+              - id: workflow-ptc
+                name: '@deepseek-ai/dsh-workflow-ptc'
                 config:
                   provider: spawn
 
diff --git a/presets/netxops/agent.cordis.yml b/presets/netxops/agent.cordis.yml
index 56e1eb1..0e2622c 100644
--- a/presets/netxops/agent.cordis.yml
+++ b/presets/netxops/agent.cordis.yml
@@ -1,14 +1,14 @@
 # Netx Ops delta only — NOT a full agent composition.
 #
-# At Host apply, `ensureAgentPresetInstalled` copies the Harness shipped
-# `standard` preset into `$DSH_HOME/.agent-presets/netxops`, then:
+# At Host apply, `ensureAgentPresetInstalled` composes the host's shipped
+# `standard` (Desktop 0.2: dsh-web-app `standard.patch.yml`; web/CLI:
+# dsh-agent-presets directory) into `$DSH_HOME/.agent-presets/netxops`, then:
 #   1. replaces `persona` with presets/netxops/PERSONA.md
 #   2. ensures the `netxops-tools` row below is present
-#   3. copies presets/netxops/skills/
-#
-# DSH has no preset inheritance; composing from `standard` at install time is
-# how Netx Ops stays aligned with the running Harness without embedding (or
-# declaring via `@deepseek-ai/dsh-agent-preset`) a full standard tree.
+#   3. aligns workflow engine package to what the host can resolve
+#   4. copies presets/netxops/skills/
+# Desktop also syncs a declarative `@deepseek-ai/dsh-agent-preset` row into
+# the profile patch. DSH has no preset inheritance.
 
 - id: netxops-tools
   name: dsh-netxops/tools
diff --git a/scripts/gen-preset-patch.mjs b/scripts/gen-preset-patch.mjs
index 5a3183f..96a238b 100644
--- a/scripts/gen-preset-patch.mjs
+++ b/scripts/gen-preset-patch.mjs
@@ -20,7 +20,10 @@ const root = join(dirname(fileURLToPath(import.meta.url)), '..')
 const artifacts = composeNetxopsPresetArtifacts()
 const declarativePath = join(root, 'presets', 'netxops.preset.patch.yml')
 writeFileSync(declarativePath, artifacts.declarativePatch)
-console.log(`wrote ${declarativePath} (${artifacts.declarativePatch.length} bytes) from ${artifacts.standardDir}`)
+console.log(
+  `wrote ${declarativePath} (${artifacts.declarativePatch.length} bytes) `
+  + `from ${artifacts.standardKind}: ${artifacts.standardSource}`,
+)
 
 const host = readFileSync(join(root, 'cordis.patch.yml'), 'utf8')
 const bundle = `# Host-only bundle patch (web-safe).
diff --git a/src/agent-preset-install.ts b/src/agent-preset-install.ts
index 38be89f..9fd3454 100644
--- a/src/agent-preset-install.ts
+++ b/src/agent-preset-install.ts
@@ -4,11 +4,15 @@
  * - Web / source CLI (`@deepseek-ai/dsh-agent-presets`): directory under
  *   `$DSH_HOME/.agent-presets/netxops`.
  * - Desktop 0.2 (`@deepseek-ai/dsh-agent-preset` + registry): declarative
- *   insert row in `presets/netxops.preset.patch.yml`, synced into the desktop
- *   profile `cordis.patch.yml` on apply (not the package bundle — keeps web safe).
+ *   insert row synced into the desktop profile `cordis.patch.yml` on apply.
  *
- * Both are composed from the host shipped `standard` + Netx Ops overlays
- * (DSH has no preset `extends`).
+ * Both are composed from the **host's** shipped `standard` + Netx Ops overlays
+ * (DSH has no preset `extends`). Desktop 0.2 ships standard as
+ * `@deepseek-ai/dsh-web-app/presets/standard.patch.yml` (`workflow-ptc`); the
+ * CLI heal tree under `$DSH_HOME/profiles/node_modules` may still carry an
+ * older `dsh-agent-presets` standard (`workflow-worker-thread`). Prefer the
+ * Desktop patch when present, and refuse to write a composition whose package
+ * names cannot resolve from the host anchors.
  */
 
 import {
@@ -30,6 +34,9 @@ export const NETXOPS_PRESET_ID = 'netxops'
 const DESKTOP_PATCH_BEGIN = '# BEGIN dsh-netxops-preset (managed)'
 const DESKTOP_PATCH_END = '# END dsh-netxops-preset (managed)'
 
+/** Indent of plugin rows inside `dsh-web-app/presets/*.patch.yml`. */
+const PATCH_PLUGIN_INDENT = '          '
+
 function packageRoot(): string {
   return join(dirname(fileURLToPath(import.meta.url)), '..')
 }
@@ -40,23 +47,93 @@ function resolveDshHome(): string {
   return join(homedir(), '.dsh')
 }
 
-/** Locate the shipped `standard` preset directory on this machine. */
+function electronResourcesRoots(): string[] {
+  const roots: string[] = []
+  const rp = (process as NodeJS.Process & { resourcesPath?: string }).resourcesPath
+  if (typeof rp === 'string' && rp.length > 0) roots.push(rp)
+  // Packaged Desktop: `<install>/DeepSeek Harness.exe` beside `resources/`.
+  roots.push(join(dirname(process.execPath), 'resources'))
+  return roots
+}
+
+function readableFile(path: string): boolean {
+  try {
+    readFileSync(path, { encoding: 'utf8', flag: 'r' })
+    return true
+  } catch {
+    return false
+  }
+}
+
+/**
+ * Locate Desktop 0.2's declarative `standard` patch (`workflow-ptc`).
+ * Prefer Electron `app.asar` (what the running Desktop actually loads) over
+ * `$DSH_HOME/profiles/node_modules` (often the older CLI heal tree).
+ */
+export function resolveDesktopStandardPatchPath(): string | null {
+  const dshHome = resolveDshHome()
+  const envOverride = process.env.NETXOPS_STANDARD_PATCH?.trim()
+  const candidates: string[] = []
+  if (envOverride) candidates.push(envOverride)
+
+  for (const resources of electronResourcesRoots()) {
+    candidates.push(
+      join(resources, 'app.asar', 'dsh', 'node_modules', '@deepseek-ai', 'dsh-web-app', 'presets', 'standard.patch.yml'),
+      join(resources, 'app.asar.unpacked', 'dsh', 'node_modules', '@deepseek-ai', 'dsh-web-app', 'presets', 'standard.patch.yml'),
+    )
+  }
+
+  const requireAnchors = [
+    join(dshHome, 'profiles', 'desktop', 'package.json'),
+    join(dshHome, 'profiles', 'desktop', 'node_modules', 'dsh-netxops', 'package.json'),
+    join(packageRoot(), 'package.json'),
+    join(dshHome, 'profiles', 'node_modules', '@deepseek-ai', 'dsh-web-app', 'package.json'),
+    join(dshHome, 'profiles', 'web', 'package.json'),
+  ]
+  for (const anchor of requireAnchors) {
+    if (!existsSync(anchor)) continue
+    try {
+      const req = createRequire(anchor)
+      try {
+        candidates.push(req.resolve('@deepseek-ai/dsh-web-app/presets/standard.patch.yml'))
+      } catch {
+        // older web-app builds do not export the subpath
+      }
+      const pkg = dirname(req.resolve('@deepseek-ai/dsh-web-app/package.json'))
+      candidates.push(join(pkg, 'presets', 'standard.patch.yml'))
+    } catch {
+      // try next anchor
+    }
+  }
+
+  for (const path of candidates) {
+    if (readableFile(path)) return path
+  }
+  return null
+}
+
+/**
+ * Locate the shipped directory `standard` (`agent.cordis.yml`).
+ * Profile-local copies win over the shared `$DSH_HOME/profiles/node_modules`
+ * heal tree, which is frequently an older CLI generation than Desktop.
+ */
 export function resolveStandardPresetDir(): string | null {
   const dshHome = resolveDshHome()
   const candidates = [
-    join(dshHome, 'profiles', 'node_modules', '@deepseek-ai', 'dsh-agent-presets', 'presets', 'standard'),
-    join(dshHome, 'profiles', 'web', 'node_modules', '@deepseek-ai', 'dsh-agent-presets', 'presets', 'standard'),
     join(dshHome, 'profiles', 'desktop', 'node_modules', '@deepseek-ai', 'dsh-agent-presets', 'presets', 'standard'),
+    join(dshHome, 'profiles', 'web', 'node_modules', '@deepseek-ai', 'dsh-agent-presets', 'presets', 'standard'),
     // Source checkout used by `dsh` CLI / local Harness.
     join(dirname(fileURLToPath(import.meta.url)), '..', '..', 'DeepSeekHarness', 'packages', 'preset', 'agent-presets', 'presets', 'standard'),
+    // Shared heal tree last — often lags Desktop 0.2.
+    join(dshHome, 'profiles', 'node_modules', '@deepseek-ai', 'dsh-agent-presets', 'presets', 'standard'),
   ]
   for (const dir of candidates) {
     if (existsSync(join(dir, 'agent.cordis.yml'))) return dir
   }
   for (const nm of [
-    join(dshHome, 'profiles', 'node_modules'),
-    join(dshHome, 'profiles', 'web', 'node_modules'),
     join(dshHome, 'profiles', 'desktop', 'node_modules'),
+    join(dshHome, 'profiles', 'web', 'node_modules'),
+    join(dshHome, 'profiles', 'node_modules'),
   ]) {
     const pkgJson = join(nm, '@deepseek-ai', 'dsh-agent-presets', 'package.json')
     if (!existsSync(pkgJson)) continue
@@ -80,6 +157,193 @@ export function resolveStandardPresetDir(): string | null {
   return null
 }
 
+/** True when a packaged Desktop install is on disk (asar may be opaque to plain Node). */
+export function desktopRuntimeLikelyPresent(): boolean {
+  if (typeof process.versions.electron === 'string') return true
+  for (const resources of electronResourcesRoots()) {
+    if (existsSync(join(resources, 'app.asar'))) return true
+  }
+  const localAppData = process.env.LOCALAPPDATA?.trim()
+  if (localAppData) {
+    if (existsSync(join(localAppData, 'Programs', 'DeepSeek Harness', 'resources', 'app.asar'))) {
+      return true
+    }
+  }
+  return false
+}
+
+/** Host roots used for bare package health checks (same walk shape as DSH discovery). */
+export function hostResolveBases(): string[] {
+  const dshHome = resolveDshHome()
+  const bases: string[] = []
+  for (const resources of electronResourcesRoots()) {
+    bases.push(join(resources, 'app.asar', 'dsh', 'package.json'))
+    bases.push(join(resources, 'app.asar', 'dsh', 'node_modules'))
+  }
+  const localAppData = process.env.LOCALAPPDATA?.trim()
+  if (localAppData) {
+    const asarDsh = join(localAppData, 'Programs', 'DeepSeek Harness', 'resources', 'app.asar', 'dsh')
+    bases.push(join(asarDsh, 'package.json'), join(asarDsh, 'node_modules'))
+  }
+  bases.push(
+    join(dshHome, 'profiles', 'desktop', 'package.json'),
+    join(dshHome, 'profiles', 'desktop', 'node_modules'),
+    join(dshHome, 'profiles', 'web', 'package.json'),
+    join(dshHome, 'profiles', 'web', 'node_modules'),
+    join(dshHome, 'profiles', 'node_modules'),
+    join(packageRoot(), 'package.json'),
+  )
+  // Keep asar paths even when plain Node cannot stat them — Electron can.
+  return [...new Set(bases.filter((path) => path.includes('app.asar') || existsSync(path)))]
+}
+
+/**
+ * Whether a package (optionally with subpath) is installed above any base.
+ * Mirrors `@deepseek-ai/dsh-agent-presets` discovery `packageInstalled`.
+ */
+export function packageInstalledAbove(name: string, bases: readonly string[]): boolean {
+  if (name.startsWith('cordis:') || name.startsWith('node:')) return true
+  const pkg = name.split('/').slice(0, name.startsWith('@') ? 2 : 1).join('/')
+  for (const base of bases) {
+    let dir = base.endsWith('package.json') ? dirname(base) : base
+    for (;;) {
+      if (readableFile(join(dir, 'node_modules', pkg, 'package.json'))) return true
+      // Electron asar: packages live under `…/app.asar/dsh/node_modules`.
+      if (readableFile(join(dir, pkg, 'package.json'))) return true
+      const parent = dirname(dir)
+      if (parent === dir) break
+      dir = parent
+    }
+    const requireAnchor = base.endsWith('package.json')
+      ? base
+      : existsSync(join(base, 'package.json'))
+        ? join(base, 'package.json')
+        : null
+    if (requireAnchor !== null) {
+      try {
+        createRequire(requireAnchor).resolve(`${pkg}/package.json`)
+        return true
+      } catch {
+        // try next base
+      }
+    }
+  }
+  return false
+}
+
+/** Package names referenced by top-level / nested `name:` rows in a composition. */
+export function collectCompositionPackageNames(yaml: string): string[] {
+  const names: string[] = []
+  for (const match of yaml.matchAll(/^\s*name:\s*(.+)$/gm)) {
+    let raw = match[1]!.trim()
+    if ((raw.startsWith("'") && raw.endsWith("'")) || (raw.startsWith('"') && raw.endsWith('"'))) {
+      raw = raw.slice(1, -1)
+    }
+    if (raw.length === 0) continue
+    if (raw.startsWith('./') || raw.startsWith('../') || raw.startsWith('file:')) continue
+    names.push(raw)
+  }
+  return [...new Set(names)]
+}
+
+export function unresolvableCompositionPackages(
+  yaml: string,
+  bases: readonly string[],
+): string[] {
+  return collectCompositionPackageNames(yaml).filter((name) => !packageInstalledAbove(name, bases))
+}
+
+function remapWorkflowToPtc(cordis: string): string {
+  return cordis
+    .replaceAll('- id: workflow-worker-thread', '- id: workflow-ptc')
+    .replaceAll('@deepseek-ai/dsh-workflow-worker-thread', '@deepseek-ai/dsh-workflow-ptc')
+}
+
+function remapWorkflowToWorkerThread(cordis: string): string {
+  return cordis
+    .replaceAll('- id: workflow-ptc', '- id: workflow-worker-thread')
+    .replaceAll('@deepseek-ai/dsh-workflow-ptc', '@deepseek-ai/dsh-workflow-worker-thread')
+}
+
+export type WorkflowHostKind = 'desktop' | 'web' | 'auto'
+
+/**
+ * Align workflow engine id/name with what the host can resolve.
+ * Desktop 0.2 ships `dsh-workflow-ptc`; older CLI standards name
+ * `dsh-workflow-worker-thread`. Pass `host: 'desktop' | 'web'` when composing
+ * for one surface so a dual-install machine does not poison the other.
+ */
+export function alignWorkflowEngineForHost(
+  cordis: string,
+  bases: readonly string[],
+  host: WorkflowHostKind = 'auto',
+): string {
+  const hasPtc = packageInstalledAbove('@deepseek-ai/dsh-workflow-ptc', bases)
+  const hasWorker = packageInstalledAbove('@deepseek-ai/dsh-workflow-worker-thread', bases)
+  const desktop = host === 'desktop' || (host === 'auto' && desktopRuntimeLikelyPresent())
+  if (hasPtc && !hasWorker) return remapWorkflowToPtc(cordis)
+  if (hasPtc && hasWorker && desktop) return remapWorkflowToPtc(cordis)
+  if (!hasPtc && hasWorker && desktop) {
+    // Plain Node cannot see into app.asar; Desktop 0.2 still only has ptc there.
+    return remapWorkflowToPtc(cordis)
+  }
+  if (!hasPtc && !hasWorker && desktop && cordis.includes('workflow-worker-thread')) {
+    return remapWorkflowToPtc(cordis)
+  }
+  if (hasWorker && !hasPtc && !desktop) return remapWorkflowToWorkerThread(cordis)
+  if (hasWorker && hasPtc && host === 'web') return remapWorkflowToWorkerThread(cordis)
+  return cordis
+}
+
+/** Pull the `plugins:` list body (already indented) out of a standard.patch.yml. */
+export function extractPluginsBodyFromStandardPatch(patchYaml: string): string {
+  const text = patchYaml.replace(/\r\n/g, '\n')
+  const marker = /^([ \t]*)plugins:\s*$/m
+  const match = marker.exec(text)
+  if (match === null) {
+    throw new Error('standard.patch.yml has no plugins: block')
+  }
+  const pluginsKeyIndent = match[1]!.length
+  const start = match.index + match[0].length
+  const rest = text.slice(start).replace(/^\n/, '')
+  const lines = rest.split('\n')
+  const body: string[] = []
+  for (const line of lines) {
+    if (line.trim() === '') {
+      body.push(line)
+      continue
+    }
+    const indent = line.match(/^[ \t]*/)?.[0].length ?? 0
+    if (indent <= pluginsKeyIndent) break
+    body.push(line)
+  }
+  while (body.length > 0 && body[body.length - 1]!.trim() === '') body.pop()
+  return body.join('\n')
+}
+
+/** Convert patch-indented plugins body into a top-level `agent.cordis.yml` list. */
+export function pluginsBodyToAgentCordis(pluginsBody: string): string {
+  const prefix = PATCH_PLUGIN_INDENT
+  return `${pluginsBody
+    .replace(/\r\n/g, '\n')
+    .split('\n')
+    .map((line) => {
+      if (line.length === 0) return ''
+      if (line.startsWith(prefix)) return line.slice(prefix.length)
+      return line.trimStart()
+    })
+    .join('\n')
+    .trimEnd()}\n`
+}
+
+function agentCordisToPluginsBody(agentCordis: string): string {
+  return agentCordis
+    .replace(/\r\n/g, '\n')
+    .split('\n')
+    .map((line) => (line.length === 0 ? '' : `${PATCH_PLUGIN_INDENT}${line}`))
+    .join('\n')
+}
+
 function replaceTopLevelEntry(cordis: string, id: string, replacement: string): string {
   const lines = cordis.replace(/\r\n/g, '\n').split('\n')
   const start = lines.findIndex((line) => line === `- id: ${id}`)
@@ -122,7 +386,12 @@ function personaEntryFromMarkdown(md: string): string {
 }
 
 export interface NetxopsPresetArtifacts {
-  standardDir: string
+  /** Human-readable source path (directory or patch file). */
+  standardSource: string
+  /** Kind of host standard used for composition. */
+  standardKind: 'desktop-patch' | 'directory'
+  /** Directory to seed `.agent-presets/netxops` from; null when patch-only. */
+  standardDir: string | null
   name: string
   description: string
   order: string
@@ -141,6 +410,10 @@ function readPresetMeta(metaPath: string): { name: string; description: string;
   }
 }
 
+function desktopProfilePresent(): boolean {
+  return existsSync(join(resolveDshHome(), 'profiles', 'desktop'))
+}
+
 /** Compose standard + Netx Ops overlays into directory + declarative artifacts. */
 export function composeNetxopsPresetArtifacts(): NetxopsPresetArtifacts {
   const overlayRoot = join(packageRoot(), 'presets', NETXOPS_PRESET_ID)
@@ -149,28 +422,64 @@ export function composeNetxopsPresetArtifacts(): NetxopsPresetArtifacts {
   if (!existsSync(personaPath) || !existsSync(metaPath)) {
     throw new Error(`bundled preset overlay missing under ${overlayRoot}`)
   }
-  const standardDir = resolveStandardPresetDir()
-  if (standardDir === null) {
-    throw new Error('cannot find shipped standard preset (@deepseek-ai/dsh-agent-presets)')
-  }
   const meta = readPresetMeta(metaPath)
-  let agentCordis = replaceTopLevelEntry(
-    readFileSync(join(standardDir, 'agent.cordis.yml'), 'utf8'),
+  const bases = hostResolveBases()
+  const patchPath = resolveDesktopStandardPatchPath()
+  const usePatch = patchPath !== null && (
+    process.env.NETXOPS_PREFER_DESKTOP_PATCH !== '0'
+  ) && (
+    typeof process.versions.electron === 'string'
+    || process.env.NETXOPS_PREFER_DESKTOP_PATCH === '1'
+    || desktopProfilePresent()
+    || desktopRuntimeLikelyPresent()
+  )
+
+  let standardSource: string
+  let standardKind: 'desktop-patch' | 'directory'
+  let standardDir: string | null
+  let agentCordis: string
+
+  if (usePatch && patchPath !== null) {
+    standardSource = patchPath
+    standardKind = 'desktop-patch'
+    standardDir = null
+    agentCordis = pluginsBodyToAgentCordis(extractPluginsBodyFromStandardPatch(readFileSync(patchPath, 'utf8')))
+  } else {
+    const dir = resolveStandardPresetDir()
+    if (dir === null) {
+      throw new Error(
+        'cannot find host standard preset (Desktop standard.patch.yml or @deepseek-ai/dsh-agent-presets)',
+      )
+    }
+    standardSource = dir
+    standardKind = 'directory'
+    standardDir = dir
+    agentCordis = readFileSync(join(dir, 'agent.cordis.yml'), 'utf8')
+  }
+
+  agentCordis = replaceTopLevelEntry(
+    agentCordis,
     'persona',
     personaEntryFromMarkdown(readFileSync(personaPath, 'utf8')),
   )
   agentCordis = ensureNetxopsToolsRow(agentCordis)
+  agentCordis = alignWorkflowEngineForHost(agentCordis, bases)
   if (!agentCordis.endsWith('\n')) agentCordis += '\n'
 
-  // Match dsh-web-app/presets/*.patch.yml: plugins items are indented 10 spaces
-  // under `        plugins:` (8). Same-level `- id:` makes YAML treat them as
-  // siblings of `plugins` and the declaration fails to mount.
-  const pluginsBody = agentCordis
-    .replace(/\r\n/g, '\n')
-    .split('\n')
-    .map((line) => (line.length === 0 ? '' : `          ${line}`))
-    .join('\n')
+  const missing = unresolvableCompositionPackages(agentCordis, bases)
+    .filter((name) => !name.startsWith('dsh-netxops'))
+  // Packaged Desktop keeps most `@deepseek-ai/*` only inside app.asar; plain
+  // Node cannot probe them, but the Host can. Do not block the write for those.
+  const desktopAsar = desktopRuntimeLikelyPresent()
+  const blocking = missing.filter((name) => !(desktopAsar && name.startsWith('@deepseek-ai/')))
+  if (blocking.length > 0) {
+    throw new Error(
+      `composed Netx Ops preset names packages the host cannot resolve: ${blocking.join(', ')} `
+      + `(standard-source: ${standardSource})`,
+    )
+  }
 
+  const pluginsBody = agentCordisToPluginsBody(agentCordis)
   const declarativePatch = `# Declarative Netx Ops preset for Desktop 0.2 (@deepseek-ai/dsh-agent-preset).
 # Generated from host \`standard\` + presets/netxops overlays — do not hand-edit.
 # Regenerate: bun run scripts/gen-preset-patch.mjs
@@ -186,7 +495,7 @@ export function composeNetxopsPresetArtifacts(): NetxopsPresetArtifacts {
         plugins:
 ${pluginsBody}
 `
-  return { standardDir, ...meta, agentCordis, declarativePatch }
+  return { standardSource, standardKind, standardDir, ...meta, agentCordis, declarativePatch }
 }
 
 function installDirectoryPreset(artifacts: NetxopsPresetArtifacts, logger: Context['logger']): void {
@@ -195,7 +504,10 @@ function installDirectoryPreset(artifacts: NetxopsPresetArtifacts, logger: Conte
   const dest = join(destParent, NETXOPS_PRESET_ID)
   mkdirSync(destParent, { recursive: true })
   if (existsSync(dest)) rmSync(dest, { recursive: true, force: true })
-  cpSync(artifacts.standardDir, dest, { recursive: true })
+  mkdirSync(dest, { recursive: true })
+  if (artifacts.standardDir !== null && existsSync(artifacts.standardDir)) {
+    cpSync(artifacts.standardDir, dest, { recursive: true })
+  }
   writeFileSync(join(dest, 'preset.yml'), readFileSync(join(overlayRoot, 'preset.yml'), 'utf8'))
   writeFileSync(join(dest, 'PERSONA.md'), readFileSync(join(overlayRoot, 'PERSONA.md'), 'utf8'))
   writeFileSync(join(dest, 'agent.cordis.yml'), artifacts.agentCordis)
@@ -204,14 +516,18 @@ function installDirectoryPreset(artifacts: NetxopsPresetArtifacts, logger: Conte
   writeFileSync(
     join(dest, '.dsh-netxops-managed'),
     [
-      'composed-from: standard',
-      `standard-source: ${artifacts.standardDir}`,
+      `composed-from: ${artifacts.standardKind}`,
+      `standard-source: ${artifacts.standardSource}`,
       `at: ${new Date().toISOString()}`,
       '',
     ].join('\n'),
     'utf8',
   )
-  logger.info('netxops: directory preset composed from standard → %s', dest)
+  logger.info(
+    'netxops: directory preset composed from %s → %s',
+    artifacts.standardSource,
+    dest,
+  )
 }
 
 /**
diff --git a/test/agent-preset-install.test.mjs b/test/agent-preset-install.test.mjs
new file mode 100644
index 0000000..1ebc8a6
--- /dev/null
+++ b/test/agent-preset-install.test.mjs
@@ -0,0 +1,81 @@
+import assert from 'node:assert/strict'
+import { mkdirSync, mkdtempSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, it } from 'node:test'
+import {
+  alignWorkflowEngineForHost,
+  collectCompositionPackageNames,
+  extractPluginsBodyFromStandardPatch,
+  packageInstalledAbove,
+  pluginsBodyToAgentCordis,
+} from '../src/agent-preset-install.ts'
+
+const SAMPLE_PATCH = `# comment
+- insert:
+    - id: preset-standard
+      name: '@deepseek-ai/dsh-agent-preset'
+      config:
+        id: standard
+        order: 1
+        plugins:
+          - id: persona
+            name: '@deepseek-ai/dsh-persona'
+            config:
+              prefix: hello
+          - id: tool-skill
+            name: '@deepseek-ai/dsh-tool-skill'
+          - id: workflow-worker-thread
+            name: '@deepseek-ai/dsh-workflow-worker-thread'
+`
+
+function seedPackage(root, name) {
+  const dir = join(root, 'node_modules', ...name.split('/'))
+  mkdirSync(dir, { recursive: true })
+  writeFileSync(join(dir, 'package.json'), JSON.stringify({ name, version: '0.0.0' }))
+}
+
+describe('extractPluginsBodyFromStandardPatch', () => {
+  it('keeps indented plugin rows and drops the insert wrapper', () => {
+    const body = extractPluginsBodyFromStandardPatch(SAMPLE_PATCH)
+    assert.match(body, /^          - id: persona$/m)
+    assert.match(body, /workflow-worker-thread/)
+    assert.doesNotMatch(body, /^- insert:/m)
+    assert.doesNotMatch(body, /preset-standard/)
+  })
+})
+
+describe('pluginsBodyToAgentCordis', () => {
+  it('strips the declarative plugin indent', () => {
+    const body = extractPluginsBodyFromStandardPatch(SAMPLE_PATCH)
+    const cordis = pluginsBodyToAgentCordis(body)
+    assert.match(cordis, /^- id: persona$/m)
+    assert.match(cordis, /^  name: '@deepseek-ai\/dsh-persona'$/m)
+    assert.doesNotMatch(cordis, /^          - id:/m)
+  })
+})
+
+describe('alignWorkflowEngineForHost', () => {
+  const worker = '- id: workflow-worker-thread\n  name: \'@deepseek-ai/dsh-workflow-worker-thread\'\n'
+
+  it('rewrites worker-thread → ptc when only ptc is installed above bases', () => {
+    const root = mkdtempSync(join(tmpdir(), 'netxops-preset-'))
+    seedPackage(root, '@deepseek-ai/dsh-workflow-ptc')
+    assert.equal(packageInstalledAbove('@deepseek-ai/dsh-workflow-ptc', [root]), true)
+    assert.equal(packageInstalledAbove('@deepseek-ai/dsh-workflow-worker-thread', [root]), false)
+    const out = alignWorkflowEngineForHost(worker, [root])
+    assert.match(out, /- id: workflow-ptc/)
+    assert.match(out, /dsh-workflow-ptc/)
+    assert.doesNotMatch(out, /workflow-worker-thread/)
+  })
+
+  it('collectCompositionPackageNames reads quoted names', () => {
+    const names = collectCompositionPackageNames(
+      '- id: a\n  name: \'@deepseek-ai/dsh-workflow-ptc\'\n- id: b\n  name: "@deepseek-ai/dsh-tool-workflow"\n',
+    )
+    assert.deepEqual(
+      names.sort(),
+      ['@deepseek-ai/dsh-tool-workflow', '@deepseek-ai/dsh-workflow-ptc'].sort(),
+    )
+  })
+})