diff --git a/apps/extension/src/dev/chrome-stubs.ts b/apps/extension/src/dev/chrome-stubs.ts
index e76fdfca..381d9d4b 100644
--- a/apps/extension/src/dev/chrome-stubs.ts
+++ b/apps/extension/src/dev/chrome-stubs.ts
@@ -750,6 +750,13 @@ function createChromeStubs() {
     cookies: {
       getAll: async () => [{ name: 'session', value: 'mock-session' }],
     },
+    permissions: {
+      // Dev stub: pretend the optional LinkedIn host permission is always
+      // granted so the side-panel permission gate (ensureLinkedInHostPermission)
+      // passes in dev mode and e2e without a real Chrome prompt.
+      contains: async () => true,
+      request: async () => true,
+    },
     sidePanel: {
       setPanelBehavior: () => {},
     },
diff --git a/apps/extension/src/lib/shell/facades/profile-sync.facade.ts b/apps/extension/src/lib/shell/facades/profile-sync.facade.ts
index a00dfa19..a6fdc222 100644
--- a/apps/extension/src/lib/shell/facades/profile-sync.facade.ts
+++ b/apps/extension/src/lib/shell/facades/profile-sync.facade.ts
@@ -12,6 +12,50 @@ export type LinkedInProfilePreviewResult =
   | { extracted: true; profile: CanonicalCandidateProfileDraft }
   | { extracted: false; errorCode: string; errorMessage: string };
 
+const LINKEDIN_HOST_PERMISSION: chrome.permissions.Permissions = {
+  origins: ['https://www.linkedin.com/*'],
+};
+
+interface ChromePermissionsLike {
+  contains(permissions: chrome.permissions.Permissions): Promise<boolean>;
+  request(permissions: chrome.permissions.Permissions): Promise<boolean>;
+}
+
+function getChromePermissions(): ChromePermissionsLike | undefined {
+  if (typeof chrome === 'undefined') {
+    return undefined;
+  }
+  const permissions = chrome.permissions as ChromePermissionsLike | undefined;
+  if (!permissions?.contains || !permissions.request) {
+    return undefined;
+  }
+  return permissions;
+}
+
+/**
+ * Ensures the optional LinkedIn host permission is granted before the side
+ * panel asks the service worker to extract the active LinkedIn tab.
+ *
+ * `chrome.permissions.request()` MUST run in a UI context (side panel) during a
+ * user gesture — it cannot run in the service worker (MV3). Returns false when
+ * the API is unavailable or the user denies the prompt.
+ * See `src/models/linkedin-import.model.md`.
+ */
+export async function ensureLinkedInHostPermission(): Promise<boolean> {
+  const permissions = getChromePermissions();
+  if (!permissions) {
+    return false;
+  }
+  if (await permissions.contains(LINKEDIN_HOST_PERMISSION)) {
+    return true;
+  }
+  try {
+    return await permissions.request(LINKEDIN_HOST_PERMISSION);
+  } catch {
+    return false;
+  }
+}
+
 export async function verifyProfilePage(
   url: string,
   fields: ProfileSyncField[]
diff --git a/apps/extension/src/lib/shell/profile-extractors/linkedin.extractor.ts b/apps/extension/src/lib/shell/profile-extractors/linkedin.extractor.ts
index 0d1bda98..47741e9c 100644
--- a/apps/extension/src/lib/shell/profile-extractors/linkedin.extractor.ts
+++ b/apps/extension/src/lib/shell/profile-extractors/linkedin.extractor.ts
@@ -32,7 +32,6 @@ interface ChromeLike {
   };
   permissions?: {
     contains(permissions: chrome.permissions.Permissions): Promise<boolean>;
-    request?(permissions: chrome.permissions.Permissions): Promise<boolean>;
   };
   scripting?: {
     executeScript(
@@ -215,6 +214,22 @@ export class LinkedInProfileExtractor implements PlatformProfileExtractor {
     now: number,
     tabId?: number
   ): Promise<Result<CanonicalCandidateProfileDraft, AppError>> {
+    // Permission gate runs BEFORE resolveTab: without the LinkedIn host
+    // permission, chrome.tabs.query returns tab.url === undefined and the URL
+    // classification would emit a misleading profile_not_found. The origin is
+    // requested from the side panel (user gesture) before this bridge call;
+    // see src/models/linkedin-import.model.md.
+    const scriptingReady = await this.ensureExtractionPermission();
+    if (!scriptingReady) {
+      return err(
+        createProfileExtractorError(
+          'permission_required',
+          'LinkedIn profile import requires the LinkedIn host permission. Grant it from the MissionPulse side panel before importing.',
+          now
+        )
+      );
+    }
+
     const tab = await this.resolveTab(tabId);
     if (!tab?.id || !tab.url) {
       return err(
@@ -240,13 +255,13 @@ export class LinkedInProfileExtractor implements PlatformProfileExtractor {
       );
     }
 
-    const scriptingReady = await this.ensureExtractionPermission();
-    if (!scriptingReady || !this.chromeApi.scripting?.executeScript || !this.chromeApi.tabs) {
+    if (!this.chromeApi.scripting?.executeScript) {
       return err(
         createProfileExtractorError(
           'permission_required',
-          'LinkedIn profile import requires activeTab and scripting permissions.',
-          now
+          'LinkedIn profile import requires the scripting permission.',
+          now,
+          { url: tab.url }
         )
       );
     }
@@ -336,16 +351,12 @@ export class LinkedInProfileExtractor implements PlatformProfileExtractor {
       return false;
     }
 
-    const hasLinkedInOrigin = await this.chromeApi.permissions.contains({
+    // Contains-only: the LinkedIn host permission is requested from the side
+    // panel (user gesture) before the bridge call. The service worker cannot
+    // call chrome.permissions.request (MV3). See src/models/linkedin-import.model.md.
+    return this.chromeApi.permissions.contains({
       origins: ['https://www.linkedin.com/*'],
     });
-    if (hasLinkedInOrigin) {
-      return true;
-    }
-
-    return (
-      this.chromeApi.permissions.request?.({ origins: ['https://www.linkedin.com/*'] }) ?? false
-    );
   }
 
   private async resolveTab(tabId?: number): Promise<chrome.tabs.Tab | null> {
diff --git a/apps/extension/src/models/linkedin-import.model.md b/apps/extension/src/models/linkedin-import.model.md
new file mode 100644
index 00000000..9a676fd5
--- /dev/null
+++ b/apps/extension/src/models/linkedin-import.model.md
@@ -0,0 +1,117 @@
+# LinkedIn Import Model
+
+Source of truth for the LinkedIn profile import flow: extracting the active
+LinkedIn profile tab into a canonical draft and merging it into the user's
+profile. The flow crosses two Chrome contexts (side panel → service worker) via
+the typed bridge, and is gated by an **optional** LinkedIn host permission
+requested in-context from the side panel.
+
+The LLM never decides a transition. It may later enrich extracted content
+inside a dedicated AI worker; the model decides when extraction/merge run and
+how errors surface. **Le LLM produit des signaux ; le modèle décide.**
+
+## Why a model
+
+`chrome.tabs.query` only populates `tab.url` when the extension holds the
+`tabs` permission, a matching host permission, or an active `activeTab` grant.
+`activeTab` is revoked as soon as the user navigates inside the tab, so a
+profile opened then interacted with no longer exposes its URL. LinkedIn is
+declared in `optional_host_permissions` (privacy-first: not requested at
+install), so the host permission must be requested from a UI context with a
+user gesture before the service worker can read the tab URL, read LinkedIn
+cookies, or inject the extraction script.
+
+`chrome.permissions.request()` may only be called from a UI context (popup,
+side panel, options page) during a user gesture — never from the service
+worker. Requesting it from the SW (the old flow) always fails.
+
+## Contexts
+
+- **Side panel** (`src/ui/pages/CvPage.svelte`) — owns the user gesture (click
+  on "Importer LinkedIn") and the permission request.
+- **Service worker** (`src/background/index.ts`) — owns extraction
+  (`LinkedInProfileExtractor`) and persistence (merge into `UserProfile`).
+- **Bridge** (`src/lib/shell/messaging/bridge.ts`) — typed messages between the
+  two; the side panel never touches `chrome.cookies`/`chrome.scripting`/IndexedDB
+  directly.
+
+## States (side panel, `handleLinkedInImport`)
+
+```
+idle ──CLICK─────────────────► checking-permission
+checking-permission ──PERMISSION_GRANTED──► extracting
+checking-permission ──PERMISSION_DENIED───► idle   (toast: "Autorisation LinkedIn refusée.")
+extracting ──EXTRACT_OK(profile)──► merging
+extracting ──EXTRACT_ERR(code,msg)──► idle   (toast: msg, typée par code)
+merging ──MERGE_OK──► idle   (toast: "Expériences LinkedIn importées avec succès.")
+merging ──MERGE_ERR(msg)──► idle   (toast: msg)
+```
+
+`isImporting === true` for `checking-permission | extracting | merging` (button
+disabled, reentrancy blocked).
+
+## Events
+
+- `CLICK` — user clicks "Importer LinkedIn".
+- `PERMISSION_GRANTED | PERMISSION_DENIED` — result of
+  `ensureLinkedInHostPermission()` (facade).
+- `EXTRACT_OK(profile) | EXTRACT_ERR(code, message)` — result of
+  `importLinkedInProfile()` (bridge `IMPORT_LINKEDIN_PROFILE`).
+- `MERGE_OK | MERGE_ERR(message)` — result of `syncLinkedInProfileImport(profile)`
+  (bridge `SYNC_LINKEDIN_PROFILE_IMPORT` → `PROFILE_UPDATED`).
+
+## Effects (shell)
+
+- **Enter `checking-permission`**: `ensureLinkedInHostPermission()` runs in the
+  side panel context:
+  1. `chrome.permissions.contains({ origins: ['https://www.linkedin.com/*'] })`.
+  2. If false, `chrome.permissions.request({ origins: ['https://www.linkedin.com/*'] })`
+     (user gesture active). Returns `true`/`false`.
+  - Documented UI exception (same category as clipboard write): permitted
+    because it is the Chrome-recommended pattern for optional host permissions.
+- **Enter `extracting`**: `importLinkedInProfile()` sends
+  `IMPORT_LINKEDIN_PROFILE` → SW `LinkedInProfileExtractor.extractProfile(now)`.
+- **Enter `merging`**: `syncLinkedInProfileImport(profile)` → SW
+  `mergeCandidateProfileIntoUserProfile` → emits `PROFILE_UPDATED`.
+
+## Extractor (service worker) — ordered checks
+
+```
+ensureExtractionPermission()          // contains-only; NO request from the SW
+  └ missing ⇒ permission_required
+resolveTab(active, currentWindow)
+  └ !tab?.id || !tab.url ⇒ profile_not_found   ("Open a LinkedIn profile tab…")
+classifyLinkedInUrl(tab.url)
+  └ login ⇒ session_required | checkpoint ⇒ rate_limited_or_blocked | non-/in/ ⇒ profile_not_found
+detectSession(cookies li_at)
+  └ absent ⇒ session_required
+scripting.executeScript(extractLinkedInProfileFromDom)
+  └ blockedReason ⇒ rate_limited_or_blocked | empty ⇒ dom_changed | else ⇒ canonical draft
+```
+
+The permission check runs **before** `resolveTab`: without the LinkedIn host
+permission, `tab.url` is `undefined` and the URL classification would produce a
+misleading `profile_not_found`. With the permission granted (by the side panel
+gate), `tab.url` is readable for LinkedIn tabs.
+
+## Invariants
+
+1. `chrome.permissions.request()` is called **only** from the side panel during
+   a `CLICK` gesture, never from the service worker.
+2. The extractor validates the LinkedIn host permission **before** reading
+   `tab.url`.
+3. If `tab.url` is `undefined` after the permission is granted, the active tab
+   is not a LinkedIn tab → `profile_not_found` is correct.
+4. `isImporting` blocks reentrancy for the whole `checking-permission →
+extracting → merging` sequence.
+5. Bridge errors are surfaced as typed toasts; the UI never crashes on
+   null/unknown bridge responses (facade graceful handling).
+6. The LLM never decides a transition. It may only enrich extracted content in
+   a dedicated AI worker. **Le LLM produit des signaux ; le modèle décide.**
+
+## Non-goals
+
+- Do not add the `tabs` permission (too broad; install-time warning).
+- Do not move LinkedIn to required `host_permissions` (breaks the
+  minimal-permission, privacy-first posture; in-context request is the pattern).
+- Do not request the LinkedIn origin from the service worker.
diff --git a/apps/extension/src/ui/pages/CvPage.svelte b/apps/extension/src/ui/pages/CvPage.svelte
index f9771504..477d13aa 100644
--- a/apps/extension/src/ui/pages/CvPage.svelte
+++ b/apps/extension/src/ui/pages/CvPage.svelte
@@ -6,6 +6,7 @@
     getCvSyncTargets,
   } from '$lib/shell/facades/cv-experience.facade';
   import {
+    ensureLinkedInHostPermission,
     importLinkedInProfile,
     syncLinkedInProfileImport,
   } from '$lib/shell/facades/profile-sync.facade';
@@ -34,6 +35,11 @@
     }
     isImporting = true;
     try {
+      const granted = await ensureLinkedInHostPermission();
+      if (!granted) {
+        showToast('Autorisation LinkedIn refusée.', 'error');
+        return;
+      }
       const extracted = await importLinkedInProfile();
       if (!extracted.imported) {
         showToast(extracted.errorMessage, 'error');
diff --git a/apps/extension/tests/unit/facades/profile-sync-facade.test.ts b/apps/extension/tests/unit/facades/profile-sync-facade.test.ts
index e83fb013..1a55fdd5 100644
--- a/apps/extension/tests/unit/facades/profile-sync-facade.test.ts
+++ b/apps/extension/tests/unit/facades/profile-sync-facade.test.ts
@@ -1,9 +1,10 @@
 /**
  * @vitest-environment jsdom
  */
-import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import type { CanonicalCandidateProfileDraft } from '../../../src/lib/core/profile-extractors/types';
 import {
+  ensureLinkedInHostPermission,
   importLinkedInProfile,
   previewLinkedInProfile,
   syncLinkedInProfileImport,
@@ -75,3 +76,46 @@ describe('profile-sync facade — graceful handling of null/unknown bridge respo
     });
   });
 });
+
+describe('profile-sync facade — ensureLinkedInHostPermission (side-panel permission gate)', () => {
+  const linkedinOrigin = { origins: ['https://www.linkedin.com/*'] };
+
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  it('returns true without requesting when the LinkedIn origin is already granted', async () => {
+    const contains = vi.fn(async () => true);
+    const request = vi.fn(async () => true);
+    vi.stubGlobal('chrome', { permissions: { contains, request } });
+
+    await expect(ensureLinkedInHostPermission()).resolves.toBe(true);
+    expect(contains).toHaveBeenCalledWith(linkedinOrigin);
+    expect(request).not.toHaveBeenCalled();
+  });
+
+  it('requests the LinkedIn origin when not yet granted and returns true on accept', async () => {
+    const contains = vi.fn(async () => false);
+    const request = vi.fn(async () => true);
+    vi.stubGlobal('chrome', { permissions: { contains, request } });
+
+    await expect(ensureLinkedInHostPermission()).resolves.toBe(true);
+    expect(contains).toHaveBeenCalledWith(linkedinOrigin);
+    expect(request).toHaveBeenCalledWith(linkedinOrigin);
+  });
+
+  it('returns false when the user denies the LinkedIn origin prompt', async () => {
+    const contains = vi.fn(async () => false);
+    const request = vi.fn(async () => false);
+    vi.stubGlobal('chrome', { permissions: { contains, request } });
+
+    await expect(ensureLinkedInHostPermission()).resolves.toBe(false);
+    expect(request).toHaveBeenCalledWith(linkedinOrigin);
+  });
+
+  it('returns false when chrome.permissions is unavailable (permissions API missing)', async () => {
+    vi.stubGlobal('chrome', { runtime: {} });
+
+    await expect(ensureLinkedInHostPermission()).resolves.toBe(false);
+  });
+});
diff --git a/apps/extension/tests/unit/profile-extractors/linkedin-extractor.test.ts b/apps/extension/tests/unit/profile-extractors/linkedin-extractor.test.ts
index eff7a29f..534093ac 100644
--- a/apps/extension/tests/unit/profile-extractors/linkedin-extractor.test.ts
+++ b/apps/extension/tests/unit/profile-extractors/linkedin-extractor.test.ts
@@ -90,22 +90,23 @@ describe('LinkedInProfileExtractor', () => {
     }
   });
 
-  it('requests the optional LinkedIn origin permission when it is not granted yet', async () => {
-    const requestedPermissions: chrome.permissions.Permissions[] = [];
+  it('returns permission_required when the LinkedIn origin is not granted and never calls request from the service worker', async () => {
+    const request = vi.fn(async () => true);
     const extractor = new LinkedInProfileExtractor(
       createChromeDouble({
+        // scripting/activeTab (declared permissions) are contained; the LinkedIn
+        // origin (optional_host_permissions) is not.
         contains: async (permissions) => Boolean(permissions.permissions?.length),
-        request: async (permissions) => {
-          requestedPermissions.push(permissions);
-          return true;
-        },
+        request,
       })
     );
 
     const result = await extractor.extractProfile(1779436800000);
 
-    expect(result.ok).toBe(true);
-    expect(requestedPermissions).toEqual([{ origins: ['https://www.linkedin.com/*'] }]);
+    expect(result.ok).toBe(false);
+    expect(extractorCode(result)).toBe('permission_required');
+    // MV3 invariant: chrome.permissions.request cannot run in the service worker.
+    expect(request).not.toHaveBeenCalled();
   });
 
   it('returns profile_not_found when the active tab is not a LinkedIn profile', async () => {
@@ -121,13 +122,12 @@ describe('LinkedInProfileExtractor', () => {
     expect(extractorCode(result)).toBe('profile_not_found');
   });
 
-  it('does not request LinkedIn origin permission before validating the active profile tab', async () => {
-    const request = vi.fn(async () => true);
+  it('returns profile_not_found when the active tab url is undefined despite permission being granted', async () => {
+    // With the LinkedIn host permission granted, tab.url is populated for
+    // LinkedIn tabs but stays undefined for non-LinkedIn tabs (no host match).
     const extractor = new LinkedInProfileExtractor(
       createChromeDouble({
-        contains: async (permissions) => Boolean(permissions.permissions?.length),
-        request,
-        query: async () => [{ id: 9, url: 'https://www.linkedin.com/feed/' } as chrome.tabs.Tab],
+        query: async () => [{ id: 9 } as chrome.tabs.Tab],
       })
     );
 
@@ -135,7 +135,6 @@ describe('LinkedInProfileExtractor', () => {
 
     expect(result.ok).toBe(false);
     expect(extractorCode(result)).toBe('profile_not_found');
-    expect(request).not.toHaveBeenCalled();
   });
 
   it('returns permission_required when scripting or activeTab is missing', async () => {
@@ -151,20 +150,6 @@ describe('LinkedInProfileExtractor', () => {
     expect(extractorCode(result)).toBe('permission_required');
   });
 
-  it('returns permission_required when the optional LinkedIn origin permission is refused', async () => {
-    const extractor = new LinkedInProfileExtractor(
-      createChromeDouble({
-        contains: async (permissions) => Boolean(permissions.permissions?.length),
-        request: async () => false,
-      })
-    );
-
-    const result = await extractor.extractProfile(1779436800000);
-
-    expect(result.ok).toBe(false);
-    expect(extractorCode(result)).toBe('permission_required');
-  });
-
   it('returns session_required when LinkedIn redirects to login', async () => {
     const extractor = new LinkedInProfileExtractor(
       createChromeDouble({