feat: wire session-recovery callers to async SDK/HTTP variants on SQLite

- recover-thinking-disabled-violation: isSqliteBackend() branch using
  stripThinkingPartsAsync() with SDK message enumeration
- recover-thinking-block-order: isSqliteBackend() branch using
  prependThinkingPartAsync() with SDK orphan thinking detection
- recover-empty-content-message: isSqliteBackend() branch delegating to
  extracted recover-empty-content-message-sdk.ts (200 LOC limit)
- storage.ts barrel: add async variant exports for all SDK functions

src/hooks/session-recovery/recover-empty-content-message.ts

@@ -1,6 +1,7 @@
 import type { createOpencodeClient } from "@opencode-ai/sdk"
 import type { MessageData } from "./types"
 import { extractMessageIndex } from "./detect-error-type"
+import { recoverEmptyContentMessageFromSDK } from "./recover-empty-content-message-sdk"
 import {
   findEmptyMessageByIndex,
   findEmptyMessages,
@@ -9,18 +10,30 @@ import {
   injectTextPart,
   replaceEmptyTextParts,
 } from "./storage"
+import { isSqliteBackend } from "../../shared/opencode-storage-detection"
+import { replaceEmptyTextPartsAsync, findMessagesWithEmptyTextPartsFromSDK } from "./storage/empty-text"
+import { injectTextPartAsync } from "./storage/text-part-injector"
 
 type Client = ReturnType<typeof createOpencodeClient>
 
 const PLACEHOLDER_TEXT = "[user interrupted]"
 
 export async function recoverEmptyContentMessage(
-  _client: Client,
+  client: Client,
   sessionID: string,
   failedAssistantMsg: MessageData,
   _directory: string,
   error: unknown
 ): Promise<boolean> {
+  if (isSqliteBackend()) {
+    return recoverEmptyContentMessageFromSDK(client, sessionID, failedAssistantMsg, error, {
+      placeholderText: PLACEHOLDER_TEXT,
+      replaceEmptyTextPartsAsync,
+      injectTextPartAsync,
+      findMessagesWithEmptyTextPartsFromSDK,
+    })
+  }
+
   const targetIndex = extractMessageIndex(error)
   const failedID = failedAssistantMsg.info?.id
   let anySuccess = false