fix: add workspace media-root regression coverage

CHANGELOG.md

@@ -125,6 +125,7 @@ Docs: https://docs.openclaw.ai
 - Sandbox/Prompts: show the sandbox container workdir as the prompt working directory and clarify host-path usage for file tools, preventing host-path `exec` failures in sandbox sessions. (#16790) Thanks @carrotRakko.
 - Media/Security: allow local media reads from OpenClaw state `workspace/` and `sandboxes/` roots by default so generated workspace media can be delivered without unsafe global path bypasses. (#15541) Thanks @lanceji.
 - Media/Security: harden local media allowlist bypasses by requiring an explicit `readFile` override when callers mark paths as validated, and reject filesystem-root `localRoots` entries. (#16739)
+- Media/Security: allow local media reads from default per-agent state workspaces (`workspace-<agentId>`) so non-default agents can send workspace-local attachments. (#17136) Thanks @MisterGuy420.
 - Discord/Security: harden voice message media loading (SSRF + allowed-local-root checks) so tool-supplied paths/URLs cannot be used to probe internal URLs or read arbitrary local files.
 - Security/BlueBubbles: require explicit `mediaLocalRoots` allowlists for local outbound media path reads to prevent local file disclosure. (#16322) Thanks @mbelinky.
 - Security/BlueBubbles: reject ambiguous shared-path webhook routing when multiple webhook targets match the same guid/password.

src/web/media.test.ts

@@ -1,3 +1,4 @@
+import fsSync, { type Dirent } from "node:fs";
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
@@ -371,4 +372,38 @@ describe("local media root guard", () => {
       }),
     );
   });
+
+  it("allows default OpenClaw state per-agent workspace-* roots", async () => {
+    const { STATE_DIR } = await import("../config/paths.js");
+    const readFile = vi.fn(async () => Buffer.from("generated-media"));
+    const readdirSpy = vi.spyOn(fsSync, "readdirSync").mockReturnValue([
+      {
+        name: "workspace-clawdy",
+        isDirectory: () => true,
+      } as unknown as Dirent,
+      {
+        name: "workspace-main",
+        isDirectory: () => true,
+      } as unknown as Dirent,
+      {
+        name: "workspace-file",
+        isDirectory: () => false,
+      } as unknown as Dirent,
+    ]);
+
+    try {
+      await expect(
+        loadWebMedia(path.join(STATE_DIR, "workspace-clawdy", "tmp", "render.bin"), {
+          maxBytes: 1024 * 1024,
+          readFile,
+        }),
+      ).resolves.toEqual(
+        expect.objectContaining({
+          kind: "unknown",
+        }),
+      );
+    } finally {
+      readdirSpy.mockRestore();
+    }
+  });
 });