diff --git a/packages/paperclip-runner/generated/semantic-action-catalog.json b/packages/paperclip-runner/generated/semantic-action-catalog.json
index dce0f1167e..822984b3d7 100644
--- a/packages/paperclip-runner/generated/semantic-action-catalog.json
+++ b/packages/paperclip-runner/generated/semantic-action-catalog.json
@@ -2149,7 +2149,15 @@
       "additionalProperties": false,
       "properties": {
         "assigneeActorId": {
-          "description": "Optional actor assignee.",
+          "description": "Optional actor assignee. Mutually exclusive with assigneeUserId.",
+          "maxLength": 200,
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "assigneeUserId": {
+          "description": "Company person ID from list_people. Mutually exclusive with assigneeActorId.",
           "maxLength": 200,
           "type": [
             "string",
diff --git a/packages/paperclip-runner/src/catalog/semantic-action-catalog.test.ts b/packages/paperclip-runner/src/catalog/semantic-action-catalog.test.ts
index df7307a078..bcdfbb7ff1 100644
--- a/packages/paperclip-runner/src/catalog/semantic-action-catalog.test.ts
+++ b/packages/paperclip-runner/src/catalog/semantic-action-catalog.test.ts
@@ -49,6 +49,18 @@ describe("semantic action catalog", () => {
     }
   });
 
+  it("advertises human assignment in both task creation contracts", () => {
+    const ajv = new Ajv2020({ allErrors: true, allowUnionTypes: true, strict: true });
+    for (const schema of [createTaskAction.live.descriptor.inputSchema, paperclipSemanticAction("create_task")!.inputSchema]) {
+      const validate = ajv.compile(schema);
+      const input = { title: "Hello", idempotencyKey: "hello", assigneeUserId: "company-owner" };
+      expect(validate(input), JSON.stringify(validate.errors)).toBe(true);
+      expect(validate({ ...input, assigneeUserId: null })).toBe(true);
+      expect(validate({ ...input, assigneeUserId: 42 })).toBe(false);
+      expect(validate({ ...input, undeclaredField: true })).toBe(false);
+    }
+  });
+
   it("accepts project handoff receipts and preserves ordinary child task receipts", () => {
     const ajv = new Ajv2020({ allErrors: true, allowUnionTypes: true, strict: true });
     const validate = ajv.compile(createTaskAction.live.descriptor.outputSchema);
diff --git a/packages/paperclip-runner/src/catalog/semantic-action-catalog.ts b/packages/paperclip-runner/src/catalog/semantic-action-catalog.ts
index 6f4480a338..4c77c08fec 100644
--- a/packages/paperclip-runner/src/catalog/semantic-action-catalog.ts
+++ b/packages/paperclip-runner/src/catalog/semantic-action-catalog.ts
@@ -520,7 +520,8 @@ const descriptors: readonly PaperclipSemanticActionDescriptor[] = [
         projectId: nullableText("Project identifier for the new task."),
         initialPlan: nullableText("Remaining execution steps to persist as the task plan. Exclude completed planning, approval, and handoff steps; cite the source plan revision and approval. A copied plan is not a new approval gate."),
         description: nullableText("Child task description."),
-        assigneeActorId: nullableText("Optional actor assignee.", 200),
+        assigneeActorId: nullableText("Optional actor assignee. Mutually exclusive with assigneeUserId.", 200),
+        assigneeUserId: nullableText("Company person ID from list_people. Mutually exclusive with assigneeActorId.", 200),
         status: { enum: ["backlog", "todo"], description: "Initial status. Use backlog to save work without execution. Defaults to todo (blocked when dependencies are unresolved)." },
         priority: { enum: ["critical", "high", "medium", "low"] },
         blockedByTaskIds: stringArray("Initial blocker task identifiers."),
diff --git a/server/src/services/native-runtime/runner-bridge-tools.test.ts b/server/src/services/native-runtime/runner-bridge-tools.test.ts
index c1460cfb0a..266adca486 100644
--- a/server/src/services/native-runtime/runner-bridge-tools.test.ts
+++ b/server/src/services/native-runtime/runner-bridge-tools.test.ts
@@ -26,6 +26,31 @@ describe("Runner workspace bridge", () => {
     expect((await readWorkspaceUploadFile(directory, "hello.txt")).toString()).toBe("updated");
     await expect(executeWorkspaceTool(directory, "workspace_read", { path: "outside/private.txt" }, authorize)).rejects.toThrow("symlink");
   });
+  it.each(["workspace", "skill"])("preserves Unicode characters across %s text pages", async mode => {
+    const text = "a".repeat(5999) + "🌍" + "z".repeat(6000) + "🚀";
+    const directory = await root();
+    await writeFile(join(directory, "unicode.txt"), text);
+    const bundle = await materializeAsset([{ path: "SKILL.md", content: Buffer.from(text), mode: 0o444 }]);
+    const context = { skills: [{ key: "unicode", runtimeName: "unicode", versionId: "version-1", bundle }] } as any;
+    const read = async (offset: number) => (mode === "workspace"
+      ? executeWorkspaceTool(directory, "workspace_read", { path: "unicode.txt", offset }, authorize)
+      : readAssignedSkill(context, { skill: "unicode", offset })) as Promise<{ text: string; nextOffset: number | null; sha256: string; byteSize: number }>;
+    const first = await read(0);
+    expect(first.nextOffset).toBe(5999);
+    expect(first.text).toBe("a".repeat(5999));
+    let combined = first.text, next = first.nextOffset;
+    while (next !== null) {
+      const page = await read(next);
+      expect(page.sha256).toBe(first.sha256);
+      expect(page.byteSize).toBe(Buffer.byteLength(text));
+      expect(page.text).not.toMatch(/^[\uDC00-\uDFFF]|[\uD800-\uDBFF]$/u);
+      combined += page.text;
+      next = page.nextOffset;
+    }
+    expect(combined).toBe(text);
+    await expect(read(6000)).rejects.toThrow("offset_splits_character");
+  });
+
   it("serializes overlapping writes so only one observed hash can commit", async () => {
     const directory = await root();
     const initial = await executeWorkspaceTool(directory, "workspace_write", { path: "shared.txt", text: "initial", expectedSha256: null }, authorize) as any;
diff --git a/server/src/services/native-runtime/runner-bridge-tools.ts b/server/src/services/native-runtime/runner-bridge-tools.ts
index 7b4ce81861..21858e0bae 100644
--- a/server/src/services/native-runtime/runner-bridge-tools.ts
+++ b/server/src/services/native-runtime/runner-bridge-tools.ts
@@ -67,10 +67,17 @@ async function readFilePage(file: string, offset: number) {
     const stat = await handle.stat();
     if (!stat.isFile() || stat.size > 16 * 1024 * 1024) throw new Error("runner_bridge_file_size_limit");
     const bytes = await handle.readFile();
-    // Character pagination avoids splitting UTF-8 sequences; size and hash remain byte-based.
+    // Offsets remain UTF-16 units, but page boundaries preserve complete code points.
     const text = new TextDecoder("utf-8", { fatal: true }).decode(bytes);
-    const page = text.slice(offset, offset + 6000);
-    return { text: page, sha256: digest(bytes), byteSize: bytes.length, nextOffset: offset + page.length < text.length ? offset + page.length : null };
+    const splitsCharacter = (at: number) => {
+      const before = text.charCodeAt(at - 1), after = text.charCodeAt(at);
+      return before >= 0xd800 && before <= 0xdbff && after >= 0xdc00 && after <= 0xdfff;
+    };
+    if (splitsCharacter(offset)) throw new Error("runner_bridge_offset_splits_character");
+    let end = Math.min(offset + 6000, text.length);
+    if (splitsCharacter(end)) end--;
+    const page = text.slice(offset, end);
+    return { text: page, sha256: digest(bytes), byteSize: bytes.length, nextOffset: end < text.length ? end : null };
   } finally { await handle.close(); }
 }
 export async function readAssignedSkill(context: NativeRuntimeContextSnapshot, raw: unknown) {