fix(config): accept truncateAfterCompaction (#68395)

Merged via squash.

Prepared head SHA: bf45148a75
Co-authored-by: MonkeyLeeT <6754057+MonkeyLeeT@users.noreply.github.com>
Co-authored-by: hxy91819 <8814856+hxy91819@users.noreply.github.com>
Reviewed-by: @hxy91819

CHANGELOG.md

@@ -46,6 +46,7 @@ Docs: https://docs.openclaw.ai
 - Agents/harness: surface selected plugin harness failures directly instead of replaying the same turn through embedded PI, preventing misleading secondary PI auth errors and avoiding duplicate side effects.
 - OpenAI Codex: add a ChatGPT device-code auth option beside browser OAuth, so headless or callback-hostile setups can sign in without relying on the localhost browser callback. (#69557) Thanks @vincentkoc.
 - CLI sessions: keep provider-owned CLI sessions through implicit daily expiry while preserving explicit reset behavior, and retain Claude CLI binding metadata across gateway agent requests. (#70106) Thanks @obviyus.
+- fix(config): accept truncateAfterCompaction (#68395). Thanks @MonkeyLeeT
 
 ## 2026.4.21
 

src/config/config.schema-regressions.test.ts

@@ -145,6 +145,19 @@ describe("config schema regressions", () => {
     expect(res.ok).toBe(true);
   });
 
+  it("accepts agents.defaults.compaction.truncateAfterCompaction", () => {
+    const res = validateConfigObject({
+      agents: {
+        defaults: {
+          compaction: {
+            truncateAfterCompaction: true,
+          },
+        },
+      },
+    });
+
+    expect(res.ok).toBe(true);
+  });
   it("accepts string values for agents defaults model inputs", () => {
     const res = validateConfigObject({
       agents: {

src/config/schema.base.generated.ts

@@ -4692,6 +4692,12 @@ export const GENERATED_BASE_CONFIG_SCHEMA: BaseConfigSchemaResponse = {
                     description:
                       "Pre-compaction memory flush settings that run an agentic memory write before heavy compaction. Keep enabled for long sessions so salient context is persisted before aggressive trimming.",
                   },
+                  truncateAfterCompaction: {
+                    type: "boolean",
+                    title: "Truncate After Compaction",
+                    description:
+                      "When enabled, rewrites the session JSONL file after compaction to remove entries that were summarized. Prevents unbounded file growth in long-running sessions with many compaction cycles. Default: false.",
+                  },
                   notifyUser: {
                     type: "boolean",
                     title: "Compaction Notify User",

src/config/zod-schema.agent-defaults.test.ts

@@ -64,6 +64,15 @@ describe("agent defaults schema", () => {
     expect(result.embeddedPi?.executionContract).toBe("strict-agentic");
   });
 
+  it("accepts compaction.truncateAfterCompaction", () => {
+    const result = AgentDefaultsSchema.parse({
+      compaction: {
+        truncateAfterCompaction: true,
+      },
+    })!;
+    expect(result.compaction?.truncateAfterCompaction).toBe(true);
+  });
+
   it("accepts focused contextLimits on defaults and agent entries", () => {
     const defaults = AgentDefaultsSchema.parse({
       contextLimits: {

src/config/zod-schema.agent-defaults.ts

@@ -195,6 +195,7 @@ export const AgentDefaultsSchema = z
           })
           .strict()
           .optional(),
+        truncateAfterCompaction: z.boolean().optional(),
         notifyUser: z.boolean().optional(),
       })
       .strict()