diff --git a/dsh-plugin-desktop/src/profile-manager.ts b/dsh-plugin-desktop/src/profile-manager.ts
index faaee00365..1704343f95 100644
--- a/dsh-plugin-desktop/src/profile-manager.ts
+++ b/dsh-plugin-desktop/src/profile-manager.ts
@@ -11,6 +11,7 @@ import {
   openSync,
   readFileSync,
   readdirSync,
+  rmSync,
   renameSync,
   unlinkSync,
   writeFileSync,
@@ -18,8 +19,10 @@ import {
 import { basename, dirname, join } from 'node:path'
 import {
   PROFILE_TEMPLATES,
+  initProfile,
   readProfileManifest,
   resolveProfileDir,
+  writeProfileManifest,
 } from '@deepseek-ai/dsh-app-boot'
 
 const BIN_NAME = 'dsh-plugin-desktop'
@@ -33,6 +36,7 @@ const STATE_VERSION = 1
 const MAX_STATE_BYTES = 4 * 1024
 const STATE_DIRECTORY_MODE = 0o700
 const STATE_FILE_MODE = 0o600
+const MAX_PROFILE_NAME_BYTES = 255
 
 /** One discovered or lazily available DSH profile. */
 export interface DesktopProfileSummary {
@@ -93,10 +97,15 @@ function defaultState(): DesktopProfileStateV1 {
 
 /** Reject profile names that cannot safely cross the persisted state boundary. */
 export function assertDesktopProfileName(name: string): void {
-  resolveProfileDir(name, '/')
-  if (name.length > 255 || /[\0-\x1f\x7f]/.test(name)) {
+  if (typeof name !== 'string' || name.length === 0
+    || name.includes('/') || name.includes('\\') || name === '.' || name === '..'
+    || name === 'node_modules' || Buffer.byteLength(name, 'utf8') > MAX_PROFILE_NAME_BYTES
+    || /[\0-\x1f\x7f-\x9f]/.test(name)
+    || /[<>:"|?*]/.test(name) || /[. ]$/.test(name)
+    || /^(?:CON|PRN|AUX|NUL|COM[1-9]|LPT[1-9])(?:\..*)?$/i.test(name)) {
     throw new Error(`${BIN_NAME}: invalid desktop profile name ${JSON.stringify(name)}`)
   }
+  resolveProfileDir(name, '/')
 }
 
 /** Validate a manifest bundle list without trusting arbitrary JSON values. */
@@ -156,6 +165,50 @@ function virtualProfile(name: typeof DEFAULT_PROFILE_NAME | typeof WEB_PROFILE_N
   }
 }
 
+/**
+ * Create a safe Web profile using only the shipped template.
+ *
+ * The profile is initialized in a sibling staging directory and published with
+ * one rename, so a failed initialization never leaves a partially initialized
+ * target visible to discovery.
+ */
+export function createDesktopWebProfile(home: string, name: string): DesktopProfileSummary {
+  assertDesktopProfileName(name)
+  const template = PROFILE_TEMPLATES.web
+  if (template === undefined) {
+    throw new Error(`${BIN_NAME}: installed dsh-app-boot has no web profile template`)
+  }
+  const target = resolveProfileDir(name, home)
+  const profilesDir = dirname(target)
+  mkdirSync(profilesDir, { recursive: true })
+  try {
+    lstatSync(target)
+    throw new Error(`${BIN_NAME}: profile ${JSON.stringify(name)} already exists`)
+  } catch (cause) {
+    if ((cause as NodeJS.ErrnoException).code !== 'ENOENT') throw cause
+  }
+
+  const staging = join(profilesDir, `.${basename(target)}.creating-${process.pid}-${randomUUID()}`)
+  try {
+    initProfile(staging, [...template])
+    const manifest = readProfileManifest(BIN_NAME, staging)
+    writeProfileManifest(staging, { ...manifest, name: `dsh-profile-${name}` })
+    // The target is checked again immediately before publication. `renameSync`
+    // is atomic on the same filesystem; an existing target is never replaced.
+    try {
+      lstatSync(target)
+      throw new Error(`${BIN_NAME}: profile ${JSON.stringify(name)} already exists`)
+    } catch (cause) {
+      if ((cause as NodeJS.ErrnoException).code !== 'ENOENT') throw cause
+    }
+    renameSync(staging, target)
+  } catch (cause) {
+    rmSync(staging, { recursive: true, force: true })
+    throw cause
+  }
+  return existingProfile(name, home)
+}
+
 /** Deterministic profile order with the product defaults first. */
 function compareProfiles(left: DesktopProfileSummary, right: DesktopProfileSummary): number {
   const priority = (name: string): number => name === DEFAULT_PROFILE_NAME ? 0 : name === WEB_PROFILE_NAME ? 1 : 2
diff --git a/dsh-plugin-desktop/src/profile-service.ts b/dsh-plugin-desktop/src/profile-service.ts
index 5419241d79..c33556a0f8 100644
--- a/dsh-plugin-desktop/src/profile-service.ts
+++ b/dsh-plugin-desktop/src/profile-service.ts
@@ -15,6 +15,8 @@ export interface DesktopCurrentProfile {
 export interface DesktopProfiles {
   /** Immutable identity of the profile backing this Cordis generation. */
   readonly current: DesktopCurrentProfile
+  /** Create a safe Web profile without selecting or restarting it. */
+  create(name: string): DesktopProfileSummary
   /** Re-read the available profile manifests without changing them. */
   list(): readonly DesktopProfileSummary[]
   /** Persist a compatible profile and request an orderly application restart. */
@@ -32,6 +34,8 @@ declare module '@deepseek-ai/cordis' {
 export interface DesktopProfileServiceBootstrap {
   /** Profile that produced the current Cordis generation. */
   readonly current: DesktopCurrentProfile
+  /** Create a safe Web profile without selecting or restarting it. */
+  create?: (name: string) => DesktopProfileSummary
   /** Re-read the available profile manifests without changing them. */
   list(): readonly DesktopProfileSummary[]
   /** Persist one validated profile as pending for the next startup. */
@@ -81,6 +85,15 @@ export class DesktopProfileService extends Service implements DesktopProfiles {
     return this.fixedCurrent
   }
 
+  /** Create a profile through the launcher-owned implementation. */
+  create(name: string): DesktopProfileSummary {
+    this.assertActive()
+    if (this.bootstrap.create === undefined) {
+      throw new Error('dsh-plugin-desktop: profile creation is unavailable')
+    }
+    return this.bootstrap.create(name)
+  }
+
   /** Re-read profile discovery through the launcher-owned implementation. */
   list(): readonly DesktopProfileSummary[] {
     this.assertActive()
diff --git a/dsh-plugin-desktop/tests/profile-manager.spec.ts b/dsh-plugin-desktop/tests/profile-manager.spec.ts
index 0d0aab4a3b..118ed1508c 100644
--- a/dsh-plugin-desktop/tests/profile-manager.spec.ts
+++ b/dsh-plugin-desktop/tests/profile-manager.spec.ts
@@ -15,6 +15,7 @@ import { afterEach, describe, expect, it } from 'vitest'
 import {
   assertDesktopProfileName,
   beginDesktopProfileStartup,
+  createDesktopWebProfile,
   listDesktopProfiles,
   markDesktopProfileFailed,
   markDesktopProfileHealthy,
@@ -50,6 +51,43 @@ describe('desktop profile discovery', () => {
     expect(() => assertDesktopProfileName('团队 profile')).not.toThrow()
     expect(() => assertDesktopProfileName('profile\nname')).toThrow('invalid desktop profile name')
     expect(() => assertDesktopProfileName('../outside')).toThrow()
+    expect(() => assertDesktopProfileName('CON.txt')).toThrow('invalid desktop profile name')
+    expect(() => assertDesktopProfileName('name.')).toThrow('invalid desktop profile name')
+    expect(() => assertDesktopProfileName('name ')).toThrow('invalid desktop profile name')
+    expect(() => assertDesktopProfileName('é'.repeat(128))).toThrow('invalid desktop profile name')
+  })
+
+  it('creates a Web profile from the shipped template and publishes all files together', () => {
+    const home = temporaryRoot()
+
+    expect(createDesktopWebProfile(home, 'work')).toEqual(expect.objectContaining({
+      name: 'work',
+      dir: join(home, 'profiles', 'work'),
+      exists: true,
+      bundles: ['@deepseek-ai/dsh-base', '@deepseek-ai/dsh-web-app'],
+      webCapable: true,
+    }))
+    expect(readFileSync(join(home, 'profiles', 'work', 'package.json'), 'utf8'))
+      .toContain('"name": "dsh-profile-work"')
+    expect(existsSync(join(home, 'profiles', 'work', 'cordis.patch.yml'))).toBe(true)
+    expect(existsSync(join(home, 'profiles', 'work', 'pnpm-workspace.yaml'))).toBe(true)
+    expect(readdirSync(join(home, 'profiles')).filter(name => name.includes('.work.creating-'))).toEqual([])
+  })
+
+  it('does not overwrite an existing profile or leave a target after failure', () => {
+    const home = temporaryRoot()
+    const existing = writeProfile(home, 'work', ['@deepseek-ai/dsh-base'])
+    const before = readFileSync(join(existing, 'package.json'), 'utf8')
+
+    expect(() => createDesktopWebProfile(home, 'work')).toThrow('already exists')
+    expect(readFileSync(join(existing, 'package.json'), 'utf8')).toBe(before)
+    expect(readdirSync(join(home, 'profiles')).filter(name => name.includes('.work.creating-'))).toEqual([])
+
+    const blockedHome = join(home, 'blocked-home')
+    mkdirSync(blockedHome, { recursive: true })
+    writeFileSync(join(blockedHome, 'profiles'), 'not a directory')
+    expect(() => createDesktopWebProfile(blockedHome, 'work')).toThrow()
+    expect(existsSync(join(blockedHome, 'profiles', 'work'))).toBe(false)
   })
 
   it('lists lazy defaults and existing profiles without creating or changing manifests', () => {
diff --git a/dsh-plugin-desktop/tests/profile-service.spec.ts b/dsh-plugin-desktop/tests/profile-service.spec.ts
index 6feac8c8f2..3f7ea2cb65 100644
--- a/dsh-plugin-desktop/tests/profile-service.spec.ts
+++ b/dsh-plugin-desktop/tests/profile-service.spec.ts
@@ -77,6 +77,24 @@ describe('desktop profile service', () => {
     expect(list).toHaveBeenCalledTimes(2)
   })
 
+  it('creates a profile through the launcher without selecting it', async () => {
+    const create = vi.fn(() => WORK)
+    const mounted = await mount(createBootstrap({ create }))
+
+    expect(mounted.service.create('work')).toEqual(WORK)
+    expect(create).toHaveBeenCalledWith('work')
+    expect(mounted.service.current.name).toBe('desktop')
+  })
+
+  it('rejects profile creation through a retained service after disposal', async () => {
+    const create = vi.fn(() => WORK)
+    const mounted = await mount(createBootstrap({ create }))
+    await mounted.dispose()
+
+    expect(() => mounted.service.create('work')).toThrow('desktopProfiles service disposed')
+    expect(create).not.toHaveBeenCalled()
+  })
+
   it('does nothing when the current profile is selected', async () => {
     const persistSelection = vi.fn()
     const requestRestart = vi.fn()
diff --git a/dsh-plugin-desktop/tests/profiles.spec.ts b/dsh-plugin-desktop/tests/profiles.spec.ts
index 64dc3e5c47..279537f2e3 100644
--- a/dsh-plugin-desktop/tests/profiles.spec.ts
+++ b/dsh-plugin-desktop/tests/profiles.spec.ts
@@ -21,6 +21,7 @@ describe('desktop profiles Host plugin', () => {
     } as unknown as DesktopRuntime
     const profiles: DesktopProfiles = {
       current: { name: 'desktop', dir: '/profiles/desktop' },
+      create: vi.fn(),
       list: () => [
         { name: 'desktop', dir: '/profiles/desktop', exists: true, bundles: [], webCapable: true },
         { name: '工作 profile', dir: '/profiles/work', exists: true, bundles: [], webCapable: true },