diff --git a/custom_components/bahmcloud_store/core.py b/custom_components/bahmcloud_store/core.py
index ed7c9ed..055e42d 100644
--- a/custom_components/bahmcloud_store/core.py
+++ b/custom_components/bahmcloud_store/core.py
@@ -93,7 +93,8 @@ class BCSCore:
     async def async_initialize(self) -> None:
         """Async initialization that avoids blocking file IO."""
         self.version = await self._read_manifest_version_async()
-        await self._refresh_installed_cache()
+        # Keep installed state in sync with /config/custom_components.
+        await self.reconcile_installed()
 
         # After a successful HA restart, restart-required is no longer relevant.
         self._clear_restart_required_issue()
@@ -155,6 +156,8 @@ class BCSCore:
     async def full_refresh(self, source: str = "manual") -> None:
         """Single refresh entry-point used by both timer and manual button."""
         _LOGGER.info("BCS full refresh triggered (source=%s)", source)
+        # Keep installed state consistent even if users deleted folders manually.
+        await self.reconcile_installed()
         await self.refresh()
         self.signal_updated()
 
@@ -514,6 +517,59 @@ class BCSCore:
 
         return await self.hass.async_add_executor_job(_read)
 
+    async def reconcile_installed(self) -> dict[str, int]:
+        """Reconcile installed repos with /config/custom_components.
+
+        Users may delete integrations manually. In that case, our persistent
+        installed registry would be stale and the UI would incorrectly show
+        them as installed. We fix this by checking for each stored domain
+        directory whether it still exists and contains a manifest.json.
+
+        Returns diagnostics: {"removed": X, "updated": Y}.
+        """
+        removed = 0
+        updated = 0
+
+        try:
+            items = await self.storage.list_installed_repos()
+        except Exception:
+            items = []
+
+        for it in items:
+            keep_domains: list[str] = []
+            for domain in (it.domains or []):
+                d = str(domain).strip()
+                if not d:
+                    continue
+                p = Path(self.hass.config.path("custom_components", d))
+                if p.is_dir() and (p / "manifest.json").exists():
+                    keep_domains.append(d)
+
+            if not keep_domains:
+                try:
+                    await self.storage.remove_installed_repo(it.repo_id)
+                    removed += 1
+                except Exception:
+                    pass
+                continue
+
+            if keep_domains != (it.domains or []):
+                try:
+                    await self.storage.set_installed_repo(
+                        repo_id=it.repo_id,
+                        url=it.url,
+                        domains=keep_domains,
+                        installed_version=it.installed_version,
+                        installed_manifest_version=it.installed_manifest_version,
+                        ref=it.ref or it.installed_version,
+                    )
+                    updated += 1
+                except Exception:
+                    pass
+
+        await self._refresh_installed_cache()
+        return {"removed": removed, "updated": updated}
+
     async def _refresh_installed_cache(self) -> None:
         try:
             items = await self.storage.list_installed_repos()
@@ -606,5 +662,48 @@ class BCSCore:
         _LOGGER.info("BCS update started: repo_id=%s", repo_id)
         return await self.install_repo(repo_id)
 
+    async def uninstall_repo(self, repo_id: str) -> dict[str, Any]:
+        """Uninstall a previously installed repository.
+
+        This removes all integration folders (domains) that were installed
+        from the repo under /config/custom_components and clears the installed
+        marker in storage.
+        """
+        async with self._install_lock:
+            installed = await self.storage.get_installed_repo(repo_id)
+            if not installed:
+                # Reconcile first (maybe it was removed manually).
+                await self.reconcile_installed()
+                installed = await self.storage.get_installed_repo(repo_id)
+            if not installed:
+                raise BCSInstallError(f"repo_id is not installed: {repo_id}")
+
+            domains = [str(d) for d in (installed.domains or []) if str(d).strip()]
+            removed_domains: list[str] = []
+
+            def _remove_domain_dir(domain: str) -> None:
+                p = Path(self.hass.config.path("custom_components", domain))
+                if p.exists() and p.is_dir():
+                    shutil.rmtree(p, ignore_errors=True)
+
+            for domain in domains:
+                await self.hass.async_add_executor_job(_remove_domain_dir, domain)
+                removed_domains.append(domain)
+
+            await self.storage.remove_installed_repo(repo_id)
+            await self._refresh_installed_cache()
+
+            # Removing integrations also requires a restart to unload code cleanly.
+            self._mark_restart_required()
+
+            _LOGGER.info("BCS uninstall complete: repo_id=%s domains=%s", repo_id, removed_domains)
+            self.signal_updated()
+            return {
+                "ok": True,
+                "repo_id": repo_id,
+                "domains": removed_domains,
+                "restart_required": True,
+            }
+
     async def request_restart(self) -> None:
         await self.hass.services.async_call("homeassistant", "restart", {}, blocking=False)
\ No newline at end of file