fix: make Discord thread parent inheritance opt-in (#69986) (thanks @Blahdude)

CHANGELOG.md

@@ -38,6 +38,7 @@ Docs: https://docs.openclaw.ai
 - Mattermost: suppress reasoning-only payloads even when they arrive as blockquoted `> Reasoning:` text, preventing `/reasoning on` from leaking thinking into channel posts. (#69927) Thanks @lawrence3699.
 - Discord: read `channel.parentId` through a safe accessor in the slash-command, reaction, and model-picker paths so partial `GuildThreadChannel` prototype getters no longer throw `Cannot access rawData on partial Channel` when commands like `/new` run from inside a thread. Fixes #69861. (#69908) Thanks @neeravmakwana.
 - Discord: use safe channel name and parent accessors across voice command authorization, so `/vc` commands from partial Discord thread channels no longer crash on Carbon rawData getters. (#70199) Thanks @hanamizuki.
+- Discord: make auto-thread parent transcript inheritance opt-in via `channels.discord.thread.inheritParent`, keeping newly created Discord thread sessions isolated by default while preserving explicit inheritance for configured accounts. Fixes #69907. (#69986) Thanks @Blahdude.
 - Browser/Chrome MCP: reset cached existing-session control sessions when a `navigate_page` call times out, so one stuck navigation no longer poisons the browser profile until a gateway restart. (#69733) Thanks @ayeshakhalid192007-dev.
 - Browser/Chrome MCP: propagate click timeouts and abort signals to existing-session actions so a stuck click fails fast and reconnects instead of poisoning the browser tool until gateway restart. (#63524) Thanks @dongseok0.
 - Gateway/channel health: base stale-socket recovery on provider-proven transport activity instead of inbound app-event freshness, preventing quiet Slack, Discord, Telegram, Matrix, and local-style channels from being restarted solely because no user traffic arrived. (#69833) Thanks @bek91.

extensions/discord/src/monitor/message-handler.process.ts

@@ -275,7 +275,7 @@ export async function processDiscordMessage(
   const forumParentSlug =
     isForumParent && threadParentName ? normalizeDiscordSlug(threadParentName) : "";
   const threadChannelId = threadChannel?.id;
-  const threadInheritParent = discordConfig.thread?.inheritParent ?? false;
+  const threadInheritParent = discordConfig?.thread?.inheritParent ?? false;
   const isForumStarter =
     Boolean(threadChannelId && isForumParent && forumParentSlug) && message.id === threadChannelId;
   const forumContextLine = isForumStarter ? `[Forum parent: #${forumParentSlug}]` : null;
@@ -904,7 +904,7 @@ export async function processDiscordMessage(
     });
 
   const resolvedBlockStreamingEnabled = resolveChannelStreamingBlockEnabled(discordConfig);
-  let dispatchResult: { queuedFinal: boolean; counts: { final: number } } | null = null;
+  let dispatchResult: Awaited<ReturnType<typeof dispatchInboundMessage>> | null = null;
   let dispatchError = false;
   let dispatchAborted = false;
   try {

extensions/discord/src/monitor/monitor.threading-utils.test.ts

@@ -284,6 +284,7 @@ describe("resolveDiscordAutoThreadContext", () => {
         name: "no created thread",
         createdThreadId: undefined,
         expectedNull: true,
+        inheritParent: undefined,
       },
       {
         name: "created thread without parent inheritance",