fix(self-improvement): skip note inject on Discord channel /new to avoid hook interference

Skip self-improvement note injection on Discord channel (non-thread) resets.
The appendSelfImprovementNote hook was push()ing synchronously into
event.messages before the first agent turn ran, which contributed to
the post-reset startup race described in openclaw/openclaw#46941.

Discord channel resets are guarded by checking Provider=discord && (MessageThreadId
== null or empty). Thread resets and non-Discord surfaces are unaffected.

Ref: openclaw/openclaw#46941 (root cause: /new re-fires command:new hooks)
Ref: openclaw/openclaw#49001 (thread-only post-rotation window)

Author: Contributor

index.ts

@@ -2785,6 +2785,19 @@ const memoryLanceDBProPlugin = {
               return;
             }
 
+            // Skip self-improvement note on Discord channel (non-thread) resets
+            // to avoid contributing to the post-reset startup race on Discord channels.
+            // Discord thread resets are handled separately by the OpenClaw core's
+            // postRotationStartupUntilMs mechanism (PR #49001).
+            const provider = typeof contextForLog.Provider === "string" ? contextForLog.Provider : "";
+            const messageThreadId = contextForLog.MessageThreadId;
+            if (provider === "discord" && (messageThreadId == null || messageThreadId === "")) {
+              api.logger.info(
+                `self-improvement: command:${action} skipped on Discord channel (non-thread) reset to avoid startup race; use /new in thread or restart gateway if startup is incomplete`
+              );
+              return;
+            }
+
             const exists = event.messages.some((m: unknown) => typeof m === "string" && m.includes(SELF_IMPROVEMENT_NOTE_PREFIX));
             if (exists) {
               api.logger.info(`self-improvement: command:${action} note already present; skip duplicate inject`);