fix(agents): initialize context engines before CLI compaction

src/agents/command/cli-compaction.test.ts

@@ -174,4 +174,59 @@ describe("runCliTurnCompactionLifecycle", () => {
     expect(updatedEntry?.cliSessionIds?.["claude-cli"]).toBeUndefined();
     expect(updatedEntry?.claudeCliSessionId).toBeUndefined();
   });
+
+  it("initializes built-in context engines before resolving CLI compaction engine", async () => {
+    const sessionKey = "agent:main:cli";
+    const sessionId = "session-cli-init";
+    const sessionFile = path.join(tmpDir, "session-init.jsonl");
+    await writeSessionFile({ sessionFile, sessionId });
+
+    const sessionEntry: SessionEntry = {
+      sessionId,
+      updatedAt: Date.now(),
+      sessionFile,
+      contextTokens: 1_000,
+      totalTokens: 100,
+      totalTokensFresh: true,
+    };
+    const calls: string[] = [];
+    setCliCompactionTestDeps({
+      ensureContextEnginesInitialized: () => {
+        calls.push("ensure");
+      },
+      resolveContextEngine: async () => {
+        calls.push("resolve");
+        return buildContextEngine({ compactCalls: [] });
+      },
+      createPreparedEmbeddedPiSettingsManager: async () => ({
+        getCompactionReserveTokens: () => 200,
+        getCompactionKeepRecentTokens: () => 0,
+        applyOverrides: () => {},
+      }),
+      shouldPreemptivelyCompactBeforePrompt: () => ({
+        route: "fits",
+        shouldCompact: false,
+        estimatedPromptTokens: 100,
+        promptBudgetBeforeReserve: 800,
+        overflowTokens: 0,
+        toolResultReducibleChars: 0,
+        effectiveReserveTokens: 200,
+      }),
+      resolveLiveToolResultMaxChars: () => 20_000,
+    });
+
+    await runCliTurnCompactionLifecycle({
+      cfg: {} as OpenClawConfig,
+      sessionId,
+      sessionKey,
+      sessionEntry,
+      sessionAgentId: "main",
+      workspaceDir: tmpDir,
+      agentDir: tmpDir,
+      provider: "claude-cli",
+      model: "opus",
+    });
+
+    expect(calls).toEqual(["ensure", "resolve"]);
+  });
 });

src/agents/command/cli-compaction.ts

@@ -3,6 +3,7 @@ import { SessionManager } from "@mariozechner/pi-coding-agent";
 import type { SessionEntry } from "../../config/sessions/types.js";
 import type { AgentCompactionMode } from "../../config/types.agent-defaults.js";
 import type { OpenClawConfig } from "../../config/types.openclaw.js";
+import { ensureContextEnginesInitialized as ensureContextEnginesInitializedImpl } from "../../context-engine/init.js";
 import { resolveContextEngine as resolveContextEngineImpl } from "../../context-engine/registry.js";
 import type { ContextEngine } from "../../context-engine/types.js";
 import { createSubsystemLogger } from "../../logging/subsystem.js";
@@ -32,6 +33,7 @@ type SettingsManagerLike = {
 };
 type CliCompactionDeps = {
   openSessionManager: (sessionFile: string) => SessionManagerLike;
+  ensureContextEnginesInitialized: () => void;
   resolveContextEngine: (cfg: OpenClawConfig) => Promise<ContextEngine>;
   createPreparedEmbeddedPiSettingsManager: (params: {
     cwd: string;
@@ -54,6 +56,7 @@ const log = createSubsystemLogger("agents/cli-compaction");
 
 const cliCompactionDeps: CliCompactionDeps = {
   openSessionManager: (sessionFile: string) => SessionManager.open(sessionFile),
+  ensureContextEnginesInitialized: ensureContextEnginesInitializedImpl,
   resolveContextEngine: resolveContextEngineImpl,
   createPreparedEmbeddedPiSettingsManager: createPreparedEmbeddedPiSettingsManagerImpl,
   applyPiAutoCompactionGuard: applyPiAutoCompactionGuardImpl,
@@ -70,6 +73,7 @@ export function setCliCompactionTestDeps(overrides: Partial<typeof cliCompaction
 export function resetCliCompactionTestDeps(): void {
   Object.assign(cliCompactionDeps, {
     openSessionManager: (sessionFile: string) => SessionManager.open(sessionFile),
+    ensureContextEnginesInitialized: ensureContextEnginesInitializedImpl,
     resolveContextEngine: resolveContextEngineImpl,
     createPreparedEmbeddedPiSettingsManager: createPreparedEmbeddedPiSettingsManagerImpl,
     applyPiAutoCompactionGuard: applyPiAutoCompactionGuardImpl,
@@ -201,6 +205,7 @@ export async function runCliTurnCompactionLifecycle(params: {
     return params.sessionEntry;
   }
 
+  cliCompactionDeps.ensureContextEnginesInitialized();
   const contextEngine = await cliCompactionDeps.resolveContextEngine(params.cfg);
   const sessionManager = cliCompactionDeps.openSessionManager(sessionFile);
   const settingsManager = await cliCompactionDeps.createPreparedEmbeddedPiSettingsManager({