diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a4fab28a7c..02c0ca00893 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@ Docs: https://docs.openclaw.ai
 - Dreaming/cron: wake managed dreaming jobs immediately instead of waiting for the next heartbeat, so scheduled dreaming runs start when the cron fires. (#65053) Thanks @l0cka and @vincentkoc.
 - QA/packaging: stop packaged QA helpers from crashing when optional scenario execution config is unavailable, so npm distributions can skip the repo-only scenario pack without breaking completion-cache and startup paths. (#65118) Thanks @EdderTalmor and @vincentkoc.
 - Media/audio transcription: surface the real provider failure when every audio transcription attempt fails, so status output and the CLI stop collapsing those errors into generic skips. (#65096) Thanks @l0cka and @vincentkoc.
+- Memory/wiki: preserve Unicode letters, digits, and combining marks in wiki slugs and contradiction clustering, and cap Unicode filename segments to safe byte lengths so non-ASCII titles stop collapsing or overflowing path limits. (#64742) Thanks @zhouhe-xydt and @vincentkoc.
 
 ## 2026.4.11
 
diff --git a/extensions/memory-wiki/src/bridge.test.ts b/extensions/memory-wiki/src/bridge.test.ts
index f6e3b888c86..d56b5240f60 100644
--- a/extensions/memory-wiki/src/bridge.test.ts
+++ b/extensions/memory-wiki/src/bridge.test.ts
@@ -299,4 +299,47 @@ describe("syncMemoryWikiBridgeSources", () => {
       code: "ENOENT",
     });
   });
+
+  it("caps composed bridge source filenames to the filesystem component limit", async () => {
+    const workspaceDir = await createBridgeWorkspace(`${"漢".repeat(50)}-workspace`);
+    const { rootDir: vaultDir, config } = await createVault({
+      rootDir: nextCaseRoot("long-bridge-vault"),
+      config: {
+        vaultMode: "bridge",
+        bridge: {
+          enabled: true,
+          readMemoryArtifacts: true,
+          indexDailyNotes: true,
+        },
+      },
+    });
+
+    const relativePath = `${"語".repeat(50)}/${"録".repeat(50)}.md`;
+    const absolutePath = path.join(workspaceDir, relativePath);
+    await fs.mkdir(path.dirname(absolutePath), { recursive: true });
+    await fs.writeFile(absolutePath, "# Deep Unicode Note\n", "utf8");
+    registerBridgeArtifacts([
+      {
+        kind: "daily-note",
+        workspaceDir,
+        relativePath,
+        absolutePath,
+        agentIds: ["main"],
+        contentType: "markdown",
+      },
+    ]);
+
+    const appConfig: OpenClawConfig = {
+      agents: {
+        list: [{ id: "main", default: true, workspace: workspaceDir }],
+      },
+    };
+
+    const result = await syncMemoryWikiBridgeSources({ config, appConfig });
+    const pagePath = result.pagePaths[0] ?? "";
+
+    expect(result.importedCount).toBe(1);
+    expect(Buffer.byteLength(path.basename(pagePath))).toBeLessThanOrEqual(255);
+    await expect(fs.stat(path.join(vaultDir, pagePath))).resolves.toBeTruthy();
+  });
 });
diff --git a/extensions/memory-wiki/src/bridge.ts b/extensions/memory-wiki/src/bridge.ts
index e1c40e8e964..b81731ddcc9 100644
--- a/extensions/memory-wiki/src/bridge.ts
+++ b/extensions/memory-wiki/src/bridge.ts
@@ -8,7 +8,12 @@ import {
 import type { OpenClawConfig } from "../api.js";
 import type { ResolvedMemoryWikiConfig } from "./config.js";
 import { appendMemoryWikiLog } from "./log.js";
-import { renderMarkdownFence, renderWikiMarkdown, slugifyWikiSegment } from "./markdown.js";
+import {
+  createWikiPageFilename,
+  renderMarkdownFence,
+  renderWikiMarkdown,
+  slugifyWikiSegment,
+} from "./markdown.js";
 import { writeImportedSourcePage } from "./source-page-shared.js";
 import { resolveArtifactKey } from "./source-path-shared.js";
 import {
@@ -110,11 +115,10 @@ function resolveBridgePagePath(params: { workspaceDir: string; relativePath: str
   const artifactHash = createHash("sha1").update(params.relativePath).digest("hex");
   const workspaceSlug = `${workspaceBaseSlug}-${workspaceHash.slice(0, 8)}`;
   const artifactSlug = `${artifactBaseSlug}-${artifactHash.slice(0, 8)}`;
+  const fileName = createWikiPageFilename(`bridge-${workspaceSlug}-${artifactSlug}`);
   return {
     pageId: `source.bridge.${workspaceSlug}.${artifactSlug}`,
-    pagePath: path
-      .join("sources", `bridge-${workspaceSlug}-${artifactSlug}.md`)
-      .replace(/\\/g, "/"),
+    pagePath: path.join("sources", fileName).replace(/\\/g, "/"),
     workspaceSlug,
     artifactSlug,
   };
diff --git a/extensions/memory-wiki/src/claim-health.test.ts b/extensions/memory-wiki/src/claim-health.test.ts
new file mode 100644
index 00000000000..521b6f9985e
--- /dev/null
+++ b/extensions/memory-wiki/src/claim-health.test.ts
@@ -0,0 +1,60 @@
+import { describe, expect, it } from "vitest";
+import { buildPageContradictionClusters } from "./claim-health.js";
+import type { WikiPageSummary } from "./markdown.js";
+
+function createPage(params: {
+  relativePath: string;
+  title: string;
+  contradictions: string[];
+}): WikiPageSummary {
+  return {
+    absolutePath: `/tmp/${params.relativePath}`,
+    relativePath: params.relativePath,
+    kind: "entity",
+    title: params.title,
+    sourceIds: [],
+    linkTargets: [],
+    claims: [],
+    contradictions: params.contradictions,
+    questions: [],
+  };
+}
+
+describe("buildPageContradictionClusters", () => {
+  it("clusters Unicode contradiction notes that differ only by punctuation", () => {
+    const clusters = buildPageContradictionClusters([
+      createPage({
+        relativePath: "entities/alpha.md",
+        title: "Alpha",
+        contradictions: ["模型冲突：版本 A"],
+      }),
+      createPage({
+        relativePath: "entities/beta.md",
+        title: "Beta",
+        contradictions: ["模型冲突 版本 A"],
+      }),
+    ]);
+
+    expect(clusters).toHaveLength(1);
+    expect(clusters[0]?.entries).toHaveLength(2);
+  });
+
+  it("keeps combining-mark contradiction notes in separate clusters", () => {
+    const clusters = buildPageContradictionClusters([
+      createPage({
+        relativePath: "entities/alpha.md",
+        title: "Alpha",
+        contradictions: ["किताब"],
+      }),
+      createPage({
+        relativePath: "entities/beta.md",
+        title: "Beta",
+        contradictions: ["कीताब"],
+      }),
+    ]);
+
+    expect(clusters).toHaveLength(2);
+    expect(clusters.map((cluster) => cluster.key).toSorted()).toEqual(["किताब", "कीताब"]);
+    expect(clusters.every((cluster) => cluster.entries)).toBe(true);
+  });
+});
diff --git a/extensions/memory-wiki/src/claim-health.ts b/extensions/memory-wiki/src/claim-health.ts
index 223c2dc4acd..bf016268381 100644
--- a/extensions/memory-wiki/src/claim-health.ts
+++ b/extensions/memory-wiki/src/claim-health.ts
@@ -66,7 +66,7 @@ function normalizeClaimTextKey(text: string): string {
 
 function normalizeTextKey(text: string): string {
   return normalizeLowercaseStringOrEmpty(text)
-    .replace(/[^a-z0-9]+/g, " ")
+    .replace(/[^\p{L}\p{N}\p{M}]+/gu, " ")
     .replace(/\s+/g, " ");
 }
 
diff --git a/extensions/memory-wiki/src/markdown.test.ts b/extensions/memory-wiki/src/markdown.test.ts
new file mode 100644
index 00000000000..39d5f95f838
--- /dev/null
+++ b/extensions/memory-wiki/src/markdown.test.ts
@@ -0,0 +1,42 @@
+import { createHash } from "node:crypto";
+import { describe, expect, it } from "vitest";
+import { createWikiPageFilename, slugifyWikiSegment } from "./markdown.js";
+
+describe("slugifyWikiSegment", () => {
+  it("preserves Unicode letters and numbers in wiki slugs", () => {
+    expect(slugifyWikiSegment("大语言模型概述")).toBe("大语言模型概述");
+    expect(slugifyWikiSegment("LLM 架构分析")).toBe("llm-架构分析");
+    expect(slugifyWikiSegment("Circuit Breaker 自動恢復")).toBe("circuit-breaker-自動恢復");
+  });
+
+  it("keeps ASCII behavior unchanged", () => {
+    expect(slugifyWikiSegment("hello world")).toBe("hello-world");
+    expect(slugifyWikiSegment("")).toBe("page");
+  });
+
+  it("retains combining marks so distinct titles do not collapse", () => {
+    expect(slugifyWikiSegment("किताब")).toBe("किताब");
+    expect(slugifyWikiSegment("कुतुब")).toBe("कुतुब");
+    expect(slugifyWikiSegment("कीताब")).toBe("कीताब");
+  });
+
+  it("caps long Unicode slugs to a safe filename byte length", () => {
+    const title = "漢".repeat(90);
+    const slug = slugifyWikiSegment(title);
+
+    expect(slug.endsWith(`-${createHash("sha1").update(title).digest("hex").slice(0, 12)}`)).toBe(
+      true,
+    );
+    expect(Buffer.byteLength(slug)).toBeLessThanOrEqual(240);
+    expect(slugifyWikiSegment(title)).toBe(slug);
+  });
+
+  it("caps composed wiki page filenames to a safe path-component length", () => {
+    const stem = `bridge-${"漢".repeat(45)}-${"語".repeat(45)}`;
+    const fileName = createWikiPageFilename(stem);
+
+    expect(fileName.endsWith(".md")).toBe(true);
+    expect(Buffer.byteLength(fileName)).toBeLessThanOrEqual(255);
+    expect(createWikiPageFilename(stem)).toBe(fileName);
+  });
+});
diff --git a/extensions/memory-wiki/src/markdown.ts b/extensions/memory-wiki/src/markdown.ts
index e152a244b99..73755711fab 100644
--- a/extensions/memory-wiki/src/markdown.ts
+++ b/extensions/memory-wiki/src/markdown.ts
@@ -1,3 +1,4 @@
+import { createHash } from "node:crypto";
 import path from "node:path";
 import {
   normalizeLowercaseStringOrEmpty,
@@ -65,13 +66,54 @@ const RELATED_BLOCK_PATTERN = new RegExp(
   `${WIKI_RELATED_START_MARKER}[\\s\\S]*?${WIKI_RELATED_END_MARKER}`,
   "g",
 );
+const MAX_WIKI_SEGMENT_BYTES = 240;
+const MAX_WIKI_FILENAME_COMPONENT_BYTES = 255;
+const WIKI_SEGMENT_HASH_BYTES = 12;
+
+function truncateUtf8CodePointSafe(value: string, maxBytes: number): string {
+  let result = "";
+  let bytes = 0;
+  for (const char of value) {
+    const nextBytes = Buffer.byteLength(char);
+    if (bytes + nextBytes > maxBytes) {
+      break;
+    }
+    result += char;
+    bytes += nextBytes;
+  }
+  return result;
+}
+
+function capWikiValueWithHash(raw: string, maxBytes: number, fallback: string): string {
+  if (Buffer.byteLength(raw) <= maxBytes) {
+    return raw;
+  }
+  const suffix = createHash("sha1").update(raw).digest("hex").slice(0, WIKI_SEGMENT_HASH_BYTES);
+  const truncated = truncateUtf8CodePointSafe(
+    raw,
+    maxBytes - Buffer.byteLength(`-${suffix}`),
+  ).replace(/-+$/g, "");
+  return `${truncated || fallback}-${suffix}`;
+}
 
 export function slugifyWikiSegment(raw: string): string {
   const slug = normalizeLowercaseStringOrEmpty(raw)
-    .replace(/[^a-z0-9]+/g, "-")
+    .replace(/[^\p{L}\p{N}\p{M}]+/gu, "-")
     .replace(/-+/g, "-")
     .replace(/^-+|-+$/g, "");
-  return slug || "page";
+  if (!slug) {
+    return "page";
+  }
+  return capWikiValueWithHash(slug, MAX_WIKI_SEGMENT_BYTES, "page");
+}
+
+export function createWikiPageFilename(stem: string, extension = ".md"): string {
+  const normalizedExtension = extension.startsWith(".") ? extension : `.${extension}`;
+  const maxStemBytes = Math.max(
+    1,
+    MAX_WIKI_FILENAME_COMPONENT_BYTES - Buffer.byteLength(normalizedExtension),
+  );
+  return `${capWikiValueWithHash(stem, maxStemBytes, "page")}${normalizedExtension}`;
 }
 
 export function parseWikiMarkdown(content: string): ParsedWikiMarkdown {
diff --git a/extensions/memory-wiki/src/unsafe-local.test.ts b/extensions/memory-wiki/src/unsafe-local.test.ts
index d62089de0c4..133bced73f6 100644
--- a/extensions/memory-wiki/src/unsafe-local.test.ts
+++ b/extensions/memory-wiki/src/unsafe-local.test.ts
@@ -103,4 +103,30 @@ describe("syncMemoryWikiUnsafeLocalSources", () => {
       code: "ENOENT",
     });
   });
+
+  it("caps composed unsafe-local filenames to the filesystem component limit", async () => {
+    const privateDir = await createPrivateDir(`${"漢".repeat(50)}-private`);
+    const nestedDir = path.join(privateDir, `${"語".repeat(50)}-nested`);
+    const secretPath = path.join(nestedDir, `${"録".repeat(50)}.md`);
+    await fs.mkdir(nestedDir, { recursive: true });
+    await fs.writeFile(secretPath, "# very private\n", "utf8");
+
+    const { rootDir: vaultDir, config } = await createVault({
+      rootDir: nextCaseRoot("long-unsafe-vault"),
+      config: {
+        vaultMode: "unsafe-local",
+        unsafeLocal: {
+          allowPrivateMemoryCoreAccess: true,
+          paths: [privateDir],
+        },
+      },
+    });
+
+    const result = await syncMemoryWikiUnsafeLocalSources(config);
+    const pagePath = result.pagePaths[0] ?? "";
+
+    expect(result.importedCount).toBe(1);
+    expect(Buffer.byteLength(path.basename(pagePath))).toBeLessThanOrEqual(255);
+    await expect(fs.stat(path.join(vaultDir, pagePath))).resolves.toBeTruthy();
+  });
 });
diff --git a/extensions/memory-wiki/src/unsafe-local.ts b/extensions/memory-wiki/src/unsafe-local.ts
index fd98f0af740..dc1e363b3c2 100644
--- a/extensions/memory-wiki/src/unsafe-local.ts
+++ b/extensions/memory-wiki/src/unsafe-local.ts
@@ -5,7 +5,12 @@ import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtim
 import type { BridgeMemoryWikiResult } from "./bridge.js";
 import type { ResolvedMemoryWikiConfig } from "./config.js";
 import { appendMemoryWikiLog } from "./log.js";
-import { renderMarkdownFence, renderWikiMarkdown, slugifyWikiSegment } from "./markdown.js";
+import {
+  createWikiPageFilename,
+  renderMarkdownFence,
+  renderWikiMarkdown,
+  slugifyWikiSegment,
+} from "./markdown.js";
 import { writeImportedSourcePage } from "./source-page-shared.js";
 import { resolveArtifactKey } from "./source-path-shared.js";
 import {
@@ -113,7 +118,9 @@ function resolveUnsafeLocalPagePath(params: { configuredPath: string; absolutePa
   const pageSlug = `${configuredBaseSlug}-${configuredHash}-${artifactBaseSlug}-${artifactHash}`;
   return {
     pageId: `source.unsafe-local.${pageSlug}`,
-    pagePath: path.join("sources", `unsafe-local-${pageSlug}.md`).replace(/\\/g, "/"),
+    pagePath: path
+      .join("sources", createWikiPageFilename(`unsafe-local-${pageSlug}`))
+      .replace(/\\/g, "/"),
   };
 }