refactor(agents): replace console.warn with SubsystemLogger in compaction-safeguard.ts (#9974)

Merged via squash.

Prepared head SHA: 35dcc5ba354ad7f058d796846bda9d1f8a416e04
Co-authored-by: dinakars777 <250428393+dinakars777@users.noreply.github.com>
Co-authored-by: jalehman <550978+jalehman@users.noreply.github.com>
Reviewed-by: @jalehman

CHANGELOG.md

@@ -80,6 +80,7 @@ Docs: https://docs.openclaw.ai
 - Gateway/hooks: bucket hook auth failures by forwarded client IP behind trusted proxies and warn when `hooks.allowedAgentIds` leaves hook routing unrestricted.
 - Agents/compaction: skip the post-compaction `cache-ttl` marker write when a compaction completed in the same attempt, preventing the next turn from immediately triggering a second tiny compaction. (#28548) thanks @MoerAI.
 - Native chat/macOS: add `/new`, `/reset`, and `/clear` reset triggers, keep shared main-session aliases aligned, and ignore stale model-selection completions so native chat state stays in sync across reset and fast model changes. (#10898) Thanks @Nachx639.
+- Agents/compaction safeguard: route missing-model and missing-API-key cancellation warnings through the shared subsystem logger so they land in structured and file logs. (#9974) Thanks @dinakars777.
 
 ## 2026.3.11
 

src/agents/pi-extensions/compaction-safeguard.ts

@@ -726,7 +726,7 @@ export default function compactionSafeguardExtension(api: ExtensionAPI): void {
       // Use a WeakSet to track which session managers have already logged the warning.
       if (!ctx.model && !runtime?.model && !missedModelWarningSessions.has(ctx.sessionManager)) {
         missedModelWarningSessions.add(ctx.sessionManager);
-        console.warn(
+        log.warn(
           "[compaction-safeguard] Both ctx.model and runtime.model are undefined. " +
             "Compaction summarization will not run. This indicates extensionRunner.initialize() " +
             "was not called and model was not passed through runtime registry.",
@@ -737,7 +737,7 @@ export default function compactionSafeguardExtension(api: ExtensionAPI): void {
 
     const apiKey = await ctx.modelRegistry.getApiKey(model);
     if (!apiKey) {
-      console.warn(
+      log.warn(
         "Compaction safeguard: no API key available; cancelling compaction to preserve history.",
       );
       return { cancel: true };