diff --git a/frontend/index.html b/frontend/index.html
index be6676e..5adb840 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -3067,7 +3067,7 @@ textarea { resize: vertical; min-height: 120px; }
     if (workSession.active()) workSession.reconcile();
   });
   if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.register('/service-worker.js').catch(error =>
+    navigator.serviceWorker.register('service-worker.js').catch(error =>
       console.warn('Stackchain install support unavailable', error)
     );
   }
diff --git a/frontend/manifest.webmanifest b/frontend/manifest.webmanifest
index d9f4c9d..8e0f8db 100644
--- a/frontend/manifest.webmanifest
+++ b/frontend/manifest.webmanifest
@@ -2,18 +2,18 @@
   "name": "Stackchain Dashboard",
   "short_name": "Stackchain",
   "description": "Capture, plan, and complete Gitea work from mobile.",
-  "id": "/",
-  "start_url": "/",
-  "scope": "/",
+  "id": "./",
+  "start_url": "./",
+  "scope": "./",
   "display": "standalone",
   "background_color": "#07111f",
   "theme_color": "#0b1220",
   "icons": [
-    {"src": "/static/icons/stackchain-192.png", "sizes": "192x192", "type": "image/png"},
-    {"src": "/static/icons/stackchain-512.png", "sizes": "512x512", "type": "image/png"}
+    {"src": "static/icons/stackchain-192.png", "sizes": "192x192", "type": "image/png"},
+    {"src": "static/icons/stackchain-512.png", "sizes": "512x512", "type": "image/png"}
   ],
   "share_target": {
-    "action": "/",
+    "action": "./",
     "method": "GET",
     "enctype": "application/x-www-form-urlencoded",
     "params": {"title": "title", "text": "text", "url": "url"}
diff --git a/frontend/service-worker.js b/frontend/service-worker.js
index 1d66c5d..f4bff97 100644
--- a/frontend/service-worker.js
+++ b/frontend/service-worker.js
@@ -1,5 +1,10 @@
 const CACHE = 'stackchain-shell-v1';
-const SHELL = ['/manifest.webmanifest', '/static/icons/stackchain-192.png', '/static/icons/stackchain-512.png'];
+const BASE = new URL('./', self.location.href).pathname;
+const SHELL = [
+  BASE + 'manifest.webmanifest',
+  BASE + 'static/icons/stackchain-192.png',
+  BASE + 'static/icons/stackchain-512.png',
+];
 
 self.addEventListener('install', event => {
   event.waitUntil(caches.open(CACHE).then(cache => cache.addAll(SHELL)).then(() => self.skipWaiting()));
diff --git a/tests/test_my_work.py b/tests/test_my_work.py
index 784e090..3972a08 100644
--- a/tests/test_my_work.py
+++ b/tests/test_my_work.py
@@ -545,7 +545,7 @@ async def test_dashboard_launches_share_capture_with_draft_conflict_choices():
     assert 'id="shared-content-conflict"' in html
     assert '.shared-content-actions button { min-height:44px;' in html
     assert "history.replaceState({}, '', cleanUrl)" in html
-    assert "navigator.serviceWorker.register('/service-worker.js')" in html
+    assert "navigator.serviceWorker.register('service-worker.js')" in html
 
 
 @pytest.mark.anyio
diff --git a/tests/test_work_pages.py b/tests/test_work_pages.py
index ae949f9..033676c 100644
--- a/tests/test_work_pages.py
+++ b/tests/test_work_pages.py
@@ -73,12 +73,16 @@ async def test_pwa_assets_expose_root_scoped_share_target_without_caching_api_da
 
     assert manifest.status_code == 200
     assert manifest.headers["content-type"].startswith("application/manifest+json")
+    assert manifest.json()["id"] == "./"
+    assert manifest.json()["start_url"] == "./"
+    assert manifest.json()["scope"] == "./"
     assert manifest.json()["share_target"] == {
-        "action": "/", "method": "GET", "enctype": "application/x-www-form-urlencoded",
+        "action": "./", "method": "GET", "enctype": "application/x-www-form-urlencoded",
         "params": {"title": "title", "text": "text", "url": "url"},
     }
     assert worker.status_code == 200
     assert worker.headers["content-type"].startswith("application/javascript")
     assert worker.headers["service-worker-allowed"] == "/"
     assert "request.url.includes('/api/')" in worker.text
-    assert "request.method !== 'GET'" in worker.text
\ No newline at end of file
+    assert "request.method !== 'GET'" in worker.text
+    assert "new URL('./', self.location.href).pathname" in worker.text
\ No newline at end of file