fix: add sandbox bind-override regression coverage (#25410) (thanks @skyer-jian)

CHANGELOG.md

@@ -47,6 +47,7 @@ Docs: https://docs.openclaw.ai
 - Matrix/Read receipts: send read receipts as soon as Matrix messages arrive (before handler pipeline work), so clients no longer show long-lived unread/sent states while replies are processing. (#25841, #25840) Thanks @joshjhall.
 - Sandbox/FS bridge: build canonical-path shell scripts with newline separators (not `; ` joins) to avoid POSIX `sh` `do;` syntax errors that broke sandbox file/image read-write operations. (#25737, #25824, #25868) Thanks @DennisGoldfinger and @peteragility.
 - Sandbox/FS bridge tests: add regression coverage for dash-leading basenames to confirm sandbox file reads resolve to absolute container paths (and avoid shell-option misdiagnosis for dashed filenames). (#25891) Thanks @albertlieyingadrian.
+- Sandbox/Config: preserve `dangerouslyAllowReservedContainerTargets` and `dangerouslyAllowExternalBindSources` during sandbox docker config resolution so explicit bind-mount break-glass overrides reach runtime validation. (#25410) Thanks @skyer-jian.
 - Routing/Session isolation: harden followup routing so explicit cross-channel origin replies never fall back to the active dispatcher on route failure, preserve queued overflow summary routing metadata (`channel`/`to`/`thread`) across followup drain, and prefer originating channel context over internal provider tags for embedded followup runs. This prevents webchat/control-ui context from hijacking Discord-targeted replies in shared sessions. (#25864) Thanks @Gamedesigner.
 - Messaging tool dedupe: treat originating channel metadata as authoritative for same-target `message.send` suppression in proactive runs (heartbeat/cron/exec-event), including synthetic-provider contexts, so `delivery-mirror` transcript entries no longer cause duplicate Telegram sends. (#25835) Thanks @jadeathena84-arch.
 - Cron/Heartbeat delivery: stop inheriting cached session `lastThreadId` for heartbeat-mode target resolution unless a thread/topic is explicitly requested, so announce-mode cron and heartbeat deliveries stay on top-level destinations instead of leaking into active conversation threads. (#25730) Thanks @markshields-tl.

src/config/config.sandbox-docker.test.ts

@@ -103,6 +103,47 @@ describe("sandbox docker config", () => {
     expect(overridden.dangerouslyAllowContainerNamespaceJoin).toBe(false);
   });
 
+  it("uses agent override precedence for bind-mount dangerous overrides", () => {
+    const inherited = resolveSandboxDockerConfig({
+      scope: "agent",
+      globalDocker: {
+        dangerouslyAllowReservedContainerTargets: true,
+        dangerouslyAllowExternalBindSources: true,
+      },
+      agentDocker: {},
+    });
+    expect(inherited.dangerouslyAllowReservedContainerTargets).toBe(true);
+    expect(inherited.dangerouslyAllowExternalBindSources).toBe(true);
+
+    const overridden = resolveSandboxDockerConfig({
+      scope: "agent",
+      globalDocker: {
+        dangerouslyAllowReservedContainerTargets: true,
+        dangerouslyAllowExternalBindSources: true,
+      },
+      agentDocker: {
+        dangerouslyAllowReservedContainerTargets: false,
+        dangerouslyAllowExternalBindSources: false,
+      },
+    });
+    expect(overridden.dangerouslyAllowReservedContainerTargets).toBe(false);
+    expect(overridden.dangerouslyAllowExternalBindSources).toBe(false);
+
+    const sharedScope = resolveSandboxDockerConfig({
+      scope: "shared",
+      globalDocker: {
+        dangerouslyAllowReservedContainerTargets: true,
+        dangerouslyAllowExternalBindSources: true,
+      },
+      agentDocker: {
+        dangerouslyAllowReservedContainerTargets: false,
+        dangerouslyAllowExternalBindSources: false,
+      },
+    });
+    expect(sharedScope.dangerouslyAllowReservedContainerTargets).toBe(true);
+    expect(sharedScope.dangerouslyAllowExternalBindSources).toBe(true);
+  });
+
   it("rejects seccomp unconfined via Zod schema validation", () => {
     const res = validateConfigObject({
       agents: {