fix: dedupe config future-version warning per process (#75927)

CHANGELOG.md

@@ -21,6 +21,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- Config: log the "newer OpenClaw" version warning once per process instead of once per config snapshot read. (#75927) Thanks @romneyda.
 - Gateway/chat history: merge Claude CLI transcript imports for Anthropic-routed sessions that still have a Claude CLI binding, so local chat history does not hide CLI JSONL turns. Fixes #75850. Thanks @alfredjbclaw.
 - Media: trim serialized JSON suffixes after local `MEDIA:` directive file extensions, so generated-image metadata cannot pollute the parsed media path and cause false `ENOENT` delivery failures. Fixes #75182. Thanks @TnzGit and @hclsys.
 - Cron: make scheduler reload schedule comparison tolerate malformed persisted jobs, so one bad cron entry no longer aborts the whole tick. Fixes #75886. Thanks @samfox-ai.

src/config/io.ts

@@ -156,6 +156,7 @@ type ShippedPluginInstallConfigReadMigration = {
 
 const CONFIG_HEALTH_STATE_FILENAME = "config-health.json";
 const loggedInvalidConfigs = new Set<string>();
+const warnedFutureTouchedVersions = new Set<string>();
 
 type ConfigHealthFingerprint = {
   hash: string;
@@ -952,6 +953,10 @@ function warnIfConfigFromFuture(cfg: OpenClawConfig, logger: Pick<typeof console
     return;
   }
   if (shouldWarnOnTouchedVersion(VERSION, touched)) {
+    if (warnedFutureTouchedVersions.has(touched)) {
+      return;
+    }
+    warnedFutureTouchedVersions.add(touched);
     logger.warn(
       `Config was last written by a newer OpenClaw (${touched}); current version is ${VERSION}.`,
     );