fix: add safeguard compaction tool summaries

src/config/config.compaction-settings.test.ts

@@ -45,4 +45,35 @@ describe("config compaction settings", () => {
       expect(cfg.agents?.defaults?.compaction?.memoryFlush?.systemPrompt).toBe("Flush memory now.");
     });
   });
+
+  it("defaults compaction mode to safeguard", async () => {
+    await withTempHome(async (home) => {
+      const configDir = path.join(home, ".clawdbot");
+      await fs.mkdir(configDir, { recursive: true });
+      await fs.writeFile(
+        path.join(configDir, "clawdbot.json"),
+        JSON.stringify(
+          {
+            agents: {
+              defaults: {
+                compaction: {
+                  reserveTokensFloor: 9000,
+                },
+              },
+            },
+          },
+          null,
+          2,
+        ),
+        "utf-8",
+      );
+
+      vi.resetModules();
+      const { loadConfig } = await import("./config.js");
+      const cfg = loadConfig();
+
+      expect(cfg.agents?.defaults?.compaction?.mode).toBe("safeguard");
+      expect(cfg.agents?.defaults?.compaction?.reserveTokensFloor).toBe(9000);
+    });
+  });
 });

src/config/defaults.ts

@@ -139,6 +139,27 @@ export function applyContextPruningDefaults(cfg: ClawdbotConfig): ClawdbotConfig
   };
 }
 
+export function applyCompactionDefaults(cfg: ClawdbotConfig): ClawdbotConfig {
+  const defaults = cfg.agents?.defaults;
+  if (!defaults) return cfg;
+  const compaction = defaults?.compaction;
+  if (compaction?.mode) return cfg;
+
+  return {
+    ...cfg,
+    agents: {
+      ...cfg.agents,
+      defaults: {
+        ...defaults,
+        compaction: {
+          ...compaction,
+          mode: "safeguard",
+        },
+      },
+    },
+  };
+}
+
 export function resetSessionDefaultsWarningForTests() {
   defaultWarnState = { warned: false };
 }

src/config/io.ts

@@ -13,6 +13,7 @@ import {
 } from "../infra/shell-env.js";
 import { DuplicateAgentDirError, findDuplicateAgentDirs } from "./agent-dirs.js";
 import {
+  applyCompactionDefaults,
   applyContextPruningDefaults,
   applyLoggingDefaults,
   applyMessageDefaults,
@@ -334,9 +335,11 @@ export function createConfigIO(overrides: ConfigIoDeps = {}) {
         }
       }
       const cfg = applyModelDefaults(
-        applyContextPruningDefaults(
-          applySessionDefaults(
-            applyLoggingDefaults(applyMessageDefaults(validated.data as ClawdbotConfig)),
+        applyCompactionDefaults(
+          applyContextPruningDefaults(
+            applySessionDefaults(
+              applyLoggingDefaults(applyMessageDefaults(validated.data as ClawdbotConfig)),
+            ),
           ),
         ),
       );
@@ -380,7 +383,9 @@ export function createConfigIO(overrides: ConfigIoDeps = {}) {
       const hash = hashConfigRaw(null);
       const config = applyTalkApiKey(
         applyModelDefaults(
-          applyContextPruningDefaults(applySessionDefaults(applyMessageDefaults({}))),
+          applyCompactionDefaults(
+            applyContextPruningDefaults(applySessionDefaults(applyMessageDefaults({}))),
+          ),
         ),
       );
       const legacyIssues: LegacyConfigIssue[] = [];