diff --git a/extensions/telegram/contract-api.ts b/extensions/telegram/contract-api.ts
index 145554fd685..9f0d3e362b2 100644
--- a/extensions/telegram/contract-api.ts
+++ b/extensions/telegram/contract-api.ts
@@ -11,6 +11,7 @@ export {
 } from "./src/command-config.js";
 export { parseTelegramTopicConversation } from "./src/topic-conversation.js";
 export { singleAccountKeysToMove } from "./src/setup-contract.js";
+export { mergeTelegramAccountConfig } from "./src/accounts.js";
 export {
   buildCommandsPaginationKeyboard,
   buildTelegramModelsProviderChannelData,
diff --git a/packages/plugin-sdk/package.json b/packages/plugin-sdk/package.json
index 7e6a390381a..8db0de50a08 100644
--- a/packages/plugin-sdk/package.json
+++ b/packages/plugin-sdk/package.json
@@ -60,6 +60,10 @@
       "types": "./dist/src/plugin-sdk/secret-input.d.ts",
       "default": "./src/secret-input.ts"
     },
+    "./text-runtime": {
+      "types": "./dist/src/plugin-sdk/text-runtime.d.ts",
+      "default": "./src/text-runtime.ts"
+    },
     "./testing": {
       "types": "./dist/src/plugin-sdk/testing.d.ts",
       "default": "./src/testing.ts"
diff --git a/packages/plugin-sdk/src/text-runtime.ts b/packages/plugin-sdk/src/text-runtime.ts
new file mode 100644
index 00000000000..f8b813ac8f3
--- /dev/null
+++ b/packages/plugin-sdk/src/text-runtime.ts
@@ -0,0 +1 @@
+export { normalizeOptionalString, readStringValue } from "../../../src/shared/string-coerce.js";
diff --git a/src/channels/plugins/setup-helpers.ts b/src/channels/plugins/setup-helpers.ts
index a830d69d176..016f645c4cd 100644
--- a/src/channels/plugins/setup-helpers.ts
+++ b/src/channels/plugins/setup-helpers.ts
@@ -414,6 +414,11 @@ const BUNDLED_SINGLE_ACCOUNT_PROMOTION_FALLBACKS: Record<string, readonly string
   telegram: ["streaming"],
 };
 
+const BUNDLED_NAMED_ACCOUNT_PROMOTION_FALLBACKS: Record<string, readonly string[]> = {
+  // Keep top-level Telegram policy fallback intact when only auth needs seeding.
+  telegram: ["botToken", "tokenFile"],
+};
+
 type ChannelSetupPromotionSurface = {
   singleAccountKeysToMove?: readonly string[];
   namedAccountPromotionKeys?: readonly string[];
@@ -455,9 +460,9 @@ export function resolveSingleAccountKeysToMove(params: {
   const hasNamedAccounts =
     Object.keys((params.channel.accounts as Record<string, unknown>) ?? {}).filter(Boolean).length >
     0;
-  const namedAccountPromotionKeys = getChannelSetupPromotionSurface(
-    params.channelKey,
-  )?.namedAccountPromotionKeys;
+  const namedAccountPromotionKeys =
+    getChannelSetupPromotionSurface(params.channelKey)?.namedAccountPromotionKeys ??
+    BUNDLED_NAMED_ACCOUNT_PROMOTION_FALLBACKS[params.channelKey];
   return Object.entries(params.channel)
     .filter(([key, value]) => {
       if (key === "accounts" || key === "enabled" || value === undefined) {
diff --git a/src/plugin-sdk/telegram.ts b/src/plugin-sdk/telegram.ts
index c2dfe338989..874dabfa99f 100644
--- a/src/plugin-sdk/telegram.ts
+++ b/src/plugin-sdk/telegram.ts
@@ -24,3 +24,8 @@ export const collectTelegramSecurityAuditFindings: FacadeModule["collectTelegram
     loadFacadeModule().collectTelegramSecurityAuditFindings(
       ...args,
     )) as FacadeModule["collectTelegramSecurityAuditFindings"];
+
+export const mergeTelegramAccountConfig: FacadeModule["mergeTelegramAccountConfig"] = ((...args) =>
+  loadFacadeModule().mergeTelegramAccountConfig(
+    ...args,
+  )) as FacadeModule["mergeTelegramAccountConfig"];
diff --git a/src/plugins/contracts/boundary-invariants.test.ts b/src/plugins/contracts/boundary-invariants.test.ts
index efab2592431..988286fa634 100644
--- a/src/plugins/contracts/boundary-invariants.test.ts
+++ b/src/plugins/contracts/boundary-invariants.test.ts
@@ -14,6 +14,7 @@ const ALLOWED_BUNDLED_CAPABILITY_METADATA_CONSUMERS = new Set([
 const ALLOWED_EXTENSION_PATH_STRING_TESTS = new Set([
   "src/plugin-sdk/browser-maintenance.test.ts",
   "src/channels/plugins/bundled.shape-guard.test.ts",
+  "src/commands/doctor-legacy-config.migrations.test.ts",
   "src/plugins/contracts/bundled-extension-config-api-guardrails.test.ts",
   "src/scripts/test-projects.test.ts",
 ]);
diff --git a/src/plugins/contracts/extension-package-project-boundaries.test.ts b/src/plugins/contracts/extension-package-project-boundaries.test.ts
index 4b29a60aef0..803f63dfea4 100644
--- a/src/plugins/contracts/extension-package-project-boundaries.test.ts
+++ b/src/plugins/contracts/extension-package-project-boundaries.test.ts
@@ -131,6 +131,7 @@ describe("opt-in extension package boundaries", () => {
     expect(packageJson.exports?.["./text-runtime"]?.types).toBe(
       "./dist/src/plugin-sdk/text-runtime.d.ts",
     );
+    );
     expect(packageJson.exports?.["./video-generation"]?.types).toBe(
       "./dist/src/plugin-sdk/video-generation.d.ts",
     );
diff --git a/src/plugins/setup-registry.runtime.ts b/src/plugins/setup-registry.runtime.ts
index 147c079bf8a..cbd2f9b96a1 100644
--- a/src/plugins/setup-registry.runtime.ts
+++ b/src/plugins/setup-registry.runtime.ts
@@ -24,7 +24,7 @@ function resolveBundledSetupCliBackends(): SetupCliBackendRuntimeEntry[] {
   if (bundledSetupCliBackendsCache) {
     return bundledSetupCliBackendsCache;
   }
-  bundledSetupCliBackendsCache = loadPluginManifestRegistry({})
+  bundledSetupCliBackendsCache = loadPluginManifestRegistry({ cache: true })
     .plugins.filter((plugin) => plugin.origin === "bundled" && plugin.cliBackends.length > 0)
     .flatMap((plugin) =>
       plugin.cliBackends.map(