diff --git a/apps/desktop/src/main.ts b/apps/desktop/src/main.ts
index 460684929..4d41cf892 100644
--- a/apps/desktop/src/main.ts
+++ b/apps/desktop/src/main.ts
@@ -47,6 +47,7 @@ import { isArm64HostRunningIntelBuild, resolveDesktopRuntimeInfo } from "./runti
 fixPath();
 
 const PICK_FOLDER_CHANNEL = "desktop:pick-folder";
+const GET_WS_URL_CHANNEL = "desktop:get-ws-url";
 const CONFIRM_CHANNEL = "desktop:confirm";
 const SET_THEME_CHANNEL = "desktop:set-theme";
 const CONTEXT_MENU_CHANNEL = "desktop:context-menu";
@@ -1086,6 +1087,11 @@ function registerIpcHandlers(): void {
     return result.filePaths[0] ?? null;
   });
 
+  ipcMain.removeAllListeners(GET_WS_URL_CHANNEL);
+  ipcMain.on(GET_WS_URL_CHANNEL, (event) => {
+    event.returnValue = backendWsUrl || null;
+  });
+
   ipcMain.removeHandler(CONFIRM_CHANNEL);
   ipcMain.handle(CONFIRM_CHANNEL, async (_event, message: unknown) => {
     if (typeof message !== "string") {
diff --git a/apps/desktop/src/preload.ts b/apps/desktop/src/preload.ts
index 1e1bb3bd8..4759ad51f 100644
--- a/apps/desktop/src/preload.ts
+++ b/apps/desktop/src/preload.ts
@@ -2,6 +2,7 @@ import { contextBridge, ipcRenderer } from "electron";
 import type { DesktopBridge } from "@t3tools/contracts";
 
 const PICK_FOLDER_CHANNEL = "desktop:pick-folder";
+const GET_WS_URL_CHANNEL = "desktop:get-ws-url";
 const CONFIRM_CHANNEL = "desktop:confirm";
 const SET_THEME_CHANNEL = "desktop:set-theme";
 const CONTEXT_MENU_CHANNEL = "desktop:context-menu";
@@ -11,7 +12,15 @@ const UPDATE_STATE_CHANNEL = "desktop:update-state";
 const UPDATE_GET_STATE_CHANNEL = "desktop:update-get-state";
 const UPDATE_DOWNLOAD_CHANNEL = "desktop:update-download";
 const UPDATE_INSTALL_CHANNEL = "desktop:update-install";
-const wsUrl = process.env.T3CODE_DESKTOP_WS_URL ?? null;
+let wsUrl: string | null = null;
+try {
+  const value = ipcRenderer.sendSync(GET_WS_URL_CHANNEL);
+  if (typeof value === "string" && value.length > 0) {
+    wsUrl = value;
+  }
+} catch {
+  wsUrl = null;
+}
 
 contextBridge.exposeInMainWorld("desktopBridge", {
   getWsUrl: () => wsUrl,
diff --git a/apps/server/src/persistence/Layers/OrchestrationEventStore.ts b/apps/server/src/persistence/Layers/OrchestrationEventStore.ts
index 4d81cf5e8..8122d8b32 100644
--- a/apps/server/src/persistence/Layers/OrchestrationEventStore.ts
+++ b/apps/server/src/persistence/Layers/OrchestrationEventStore.ts
@@ -13,7 +13,7 @@ import {
 } from "@t3tools/contracts";
 import * as SqlClient from "effect/unstable/sql/SqlClient";
 import * as SqlSchema from "effect/unstable/sql/SqlSchema";
-import { Effect, Layer, Schema, Stream } from "effect";
+import { Effect, Layer, Option, Schema, Stream } from "effect";
 
 import {
   toPersistenceDecodeError,
@@ -231,26 +231,31 @@ const makeEventStore = Effect.gen(function* () {
           Effect.flatMap((rows) =>
             Effect.forEach(rows, (row) =>
               decodeEvent(row).pipe(
-                Effect.mapError(
-                  toPersistenceDecodeError("OrchestrationEventStore.readFromSequence:rowToEvent"),
+                Effect.map(Option.some),
+                Effect.catch((cause) =>
+                  Effect.logWarning(
+                    `OrchestrationEventStore.readFromSequence: dropping event sequence=${row.sequence} due to decode error: ${String(cause)}`,
+                  ).pipe(Effect.as(Option.none<OrchestrationEvent>())),
                 ),
               ),
+            ).pipe(
+              Effect.map((events) => ({
+                events: events.flatMap((event) => (Option.isSome(event) ? [event.value] : [])),
+                lastSequence: rows.length > 0 ? rows[rows.length - 1]!.sequence : null,
+              })),
             ),
           ),
         ),
       ).pipe(
-        Stream.flatMap((events) => {
-          if (events.length === 0) {
+        Stream.flatMap(({ events, lastSequence }) => {
+          if (lastSequence === null) {
             return Stream.empty;
           }
           const nextRemaining = remaining - events.length;
           if (nextRemaining <= 0) {
             return Stream.fromIterable(events);
           }
-          return Stream.concat(
-            Stream.fromIterable(events),
-            readPage(events[events.length - 1]!.sequence, nextRemaining),
-          );
+          return Stream.concat(Stream.fromIterable(events), readPage(lastSequence, nextRemaining));
         }),
       );
 
diff --git a/apps/server/src/provider/Layers/ProviderSessionDirectory.ts b/apps/server/src/provider/Layers/ProviderSessionDirectory.ts
index 38e097e1c..6d0eda835 100644
--- a/apps/server/src/provider/Layers/ProviderSessionDirectory.ts
+++ b/apps/server/src/provider/Layers/ProviderSessionDirectory.ts
@@ -72,6 +72,18 @@ const makeProviderSessionDirectory = Effect.gen(function* () {
                   runtimePayload: value.runtimePayload,
                 }),
               ),
+              Effect.catch(() =>
+                // Unknown providers should not poison startup; drop the binding and move on.
+                repository
+                  .deleteByThreadId({ threadId: value.threadId })
+                  .pipe(
+                    Effect.mapError(
+                      toPersistenceError("ProviderSessionDirectory.getBinding:cleanup"),
+                    ),
+                    Effect.ignore,
+                    Effect.as(Option.none<ProviderRuntimeBinding>()),
+                  ),
+              ),
             ),
         }),
       ),