diff --git a/.github/workflows/install-smoke.yml b/.github/workflows/install-smoke.yml
index f48c794b668..a8115f1644a 100644
--- a/.github/workflows/install-smoke.yml
+++ b/.github/workflows/install-smoke.yml
@@ -62,24 +62,57 @@ jobs:
         run: |
           docker run --rm --entrypoint sh openclaw-dockerfile-smoke:local -lc 'which openclaw && openclaw --version'
 
-      # This smoke only validates that the build-arg path preinstalls selected
-      # extension deps without breaking image build or basic CLI startup. It
-      # does not exercise runtime loading/registration of diagnostics-otel.
+      # This smoke validates that the build-arg path preinstalls selected
+      # extension deps and that matrix plugin discovery stays healthy in the
+      # final runtime image.
       - name: Build extension Dockerfile smoke image
         uses: useblacksmith/build-push-action@v2
         with:
           context: .
           file: ./Dockerfile
           build-args: |
-            OPENCLAW_EXTENSIONS=diagnostics-otel
+            OPENCLAW_EXTENSIONS=matrix
           tags: openclaw-ext-smoke:local
           load: true
           push: false
           provenance: false
 
-      - name: Smoke test Dockerfile with extension build arg
+      - name: Smoke test Dockerfile with matrix extension build arg
         run: |
-          docker run --rm --entrypoint sh openclaw-ext-smoke:local -lc 'which openclaw && openclaw --version'
+          docker run --rm --entrypoint sh openclaw-ext-smoke:local -lc '
+            which openclaw &&
+            openclaw --version &&
+            node -e "
+              const Module = require(\"node:module\");
+              const requireFromMatrix = Module.createRequire(\"/app/extensions/matrix/package.json\");
+              requireFromMatrix.resolve(\"@vector-im/matrix-bot-sdk/package.json\");
+              requireFromMatrix.resolve(\"@matrix-org/matrix-sdk-crypto-nodejs/package.json\");
+              const { spawnSync } = require(\"node:child_process\");
+              const run = spawnSync(\"openclaw\", [\"plugins\", \"list\", \"--json\"], { encoding: \"utf8\" });
+              if (run.status !== 0) {
+                process.stderr.write(run.stderr || run.stdout || \"plugins list failed\\n\");
+                process.exit(run.status ?? 1);
+              }
+              const parsed = JSON.parse(run.stdout);
+              const matrix = (parsed.plugins || []).find((entry) => entry.id === \"matrix\");
+              if (!matrix) {
+                throw new Error(\"matrix plugin missing from bundled plugin list\");
+              }
+              const matrixDiag = (parsed.diagnostics || []).filter(
+                (diag) =>
+                  typeof diag.source === \"string\" &&
+                  diag.source.includes(\"/extensions/matrix\") &&
+                  typeof diag.message === \"string\" &&
+                  diag.message.includes(\"extension entry escapes package directory\"),
+              );
+              if (matrixDiag.length > 0) {
+                throw new Error(
+                  \"unexpected matrix diagnostics: \" +
+                    matrixDiag.map((diag) => diag.message).join(\"; \"),
+                );
+              }
+            "
+          '
 
       - name: Build installer smoke image
         uses: useblacksmith/build-push-action@v2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c499097a822..75a7ee7e92f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -134,6 +134,7 @@ Docs: https://docs.openclaw.ai
 - Gateway/channels: serialize per-account channel startup so overlapping starts do not boot the same provider twice, preventing MS Teams `EADDRINUSE` crash loops during startup and restart. (#49583) Thanks @sudie-codes.
 - Tests/OpenAI Codex auth: align login expectations with the default `gpt-5.4` model so CI coverage stays consistent with the current OpenAI Codex default. (#44367) Thanks @jrrcdev.
 - Discord: enforce strict DM component allowlist auth (#49997) Thanks @joshavant.
+- Stabilize plugin loader and Docker extension smoke (#50058) Thanks @joshavant.
 
 ### Fixes
 
diff --git a/Dockerfile b/Dockerfile
index b2af00c3b40..fa97f83323a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -146,6 +146,10 @@ COPY --from=runtime-assets --chown=node:node /app/extensions ./extensions
 COPY --from=runtime-assets --chown=node:node /app/skills ./skills
 COPY --from=runtime-assets --chown=node:node /app/docs ./docs
 
+# In npm-installed Docker images, prefer the copied source extension tree for
+# bundled discovery so package metadata that points at source entries stays valid.
+ENV OPENCLAW_BUNDLED_PLUGINS_DIR=/app/extensions
+
 # Keep pnpm available in the runtime image for container-local workflows.
 # Use a shared Corepack home so the non-root `node` user does not need a
 # first-run network fetch when invoking pnpm.
diff --git a/src/dockerfile.test.ts b/src/dockerfile.test.ts
index bf6aeb21440..2570a8ed9dc 100644
--- a/src/dockerfile.test.ts
+++ b/src/dockerfile.test.ts
@@ -41,11 +41,17 @@ describe("Dockerfile", () => {
     const dockerfile = await readFile(dockerfilePath, "utf8");
     expect(dockerfile).toContain("FROM build AS runtime-assets");
     expect(dockerfile).toContain("CI=true pnpm prune --prod");
+    expect(dockerfile).not.toContain('npm install --prefix "extensions/$ext" --omit=dev --silent');
     expect(dockerfile).toContain(
       "COPY --from=runtime-assets --chown=node:node /app/node_modules ./node_modules",
     );
   });
 
+  it("pins bundled plugin discovery to copied source extensions in runtime images", async () => {
+    const dockerfile = await readFile(dockerfilePath, "utf8");
+    expect(dockerfile).toContain("ENV OPENCLAW_BUNDLED_PLUGINS_DIR=/app/extensions");
+  });
+
   it("normalizes plugin and agent paths permissions in image layers", async () => {
     const dockerfile = await readFile(dockerfilePath, "utf8");
     expect(dockerfile).toContain("for dir in /app/extensions /app/.agent /app/.agents");
diff --git a/src/plugin-sdk/channel-import-guardrails.test.ts b/src/plugin-sdk/channel-import-guardrails.test.ts
index 29ca632425f..9b481097ed6 100644
--- a/src/plugin-sdk/channel-import-guardrails.test.ts
+++ b/src/plugin-sdk/channel-import-guardrails.test.ts
@@ -170,6 +170,10 @@ function readSource(path: string): string {
   return readFileSync(resolve(ROOT_DIR, "..", path), "utf8");
 }
 
+function normalizePath(path: string): string {
+  return path.replaceAll("\\", "/");
+}
+
 function readSetupBarrelImportBlock(path: string): string {
   const lines = readSource(path).split("\n");
   const targetLineIndex = lines.findIndex((line) =>
@@ -186,10 +190,10 @@ function readSetupBarrelImportBlock(path: string): string {
 }
 
 function collectExtensionSourceFiles(): string[] {
-  const extensionsDir = resolve(ROOT_DIR, "..", "extensions");
-  const sharedExtensionsDir = resolve(extensionsDir, "shared");
+  const extensionsDir = normalizePath(resolve(ROOT_DIR, "..", "extensions"));
+  const sharedExtensionsDir = normalizePath(resolve(extensionsDir, "shared"));
   const files: string[] = [];
-  const stack = [extensionsDir];
+  const stack = [resolve(ROOT_DIR, "..", "extensions")];
   while (stack.length > 0) {
     const current = stack.pop();
     if (!current) {
@@ -197,6 +201,7 @@ function collectExtensionSourceFiles(): string[] {
     }
     for (const entry of readdirSync(current, { withFileTypes: true })) {
       const fullPath = resolve(current, entry.name);
+      const normalizedFullPath = normalizePath(fullPath);
       if (entry.isDirectory()) {
         if (entry.name === "node_modules" || entry.name === "dist" || entry.name === "coverage") {
           continue;
@@ -207,18 +212,18 @@ function collectExtensionSourceFiles(): string[] {
       if (!entry.isFile() || !/\.(?:[cm]?ts|[cm]?js|tsx|jsx)$/u.test(entry.name)) {
         continue;
       }
-      if (entry.name.endsWith(".d.ts") || fullPath.includes(sharedExtensionsDir)) {
+      if (entry.name.endsWith(".d.ts") || normalizedFullPath.includes(sharedExtensionsDir)) {
         continue;
       }
-      if (fullPath.includes(`${resolve(ROOT_DIR, "..", "extensions")}/shared/`)) {
+      if (normalizedFullPath.includes(`${extensionsDir}/shared/`)) {
         continue;
       }
       if (
-        fullPath.includes(".test.") ||
-        fullPath.includes(".test-") ||
-        fullPath.includes(".fixture.") ||
-        fullPath.includes(".snap") ||
-        fullPath.includes("test-support") ||
+        normalizedFullPath.includes(".test.") ||
+        normalizedFullPath.includes(".test-") ||
+        normalizedFullPath.includes(".fixture.") ||
+        normalizedFullPath.includes(".snap") ||
+        normalizedFullPath.includes("test-support") ||
         entry.name === "api.ts" ||
         entry.name === "runtime-api.ts"
       ) {
@@ -232,6 +237,7 @@ function collectExtensionSourceFiles(): string[] {
 
 function collectCoreSourceFiles(): string[] {
   const srcDir = resolve(ROOT_DIR, "..", "src");
+  const normalizedPluginSdkDir = normalizePath(resolve(ROOT_DIR, "plugin-sdk"));
   const files: string[] = [];
   const stack = [srcDir];
   while (stack.length > 0) {
@@ -241,6 +247,7 @@ function collectCoreSourceFiles(): string[] {
     }
     for (const entry of readdirSync(current, { withFileTypes: true })) {
       const fullPath = resolve(current, entry.name);
+      const normalizedFullPath = normalizePath(fullPath);
       if (entry.isDirectory()) {
         if (entry.name === "node_modules" || entry.name === "dist" || entry.name === "coverage") {
           continue;
@@ -255,14 +262,14 @@ function collectCoreSourceFiles(): string[] {
         continue;
       }
       if (
-        fullPath.includes(".test.") ||
-        fullPath.includes(".mock-harness.") ||
-        fullPath.includes(".spec.") ||
-        fullPath.includes(".fixture.") ||
-        fullPath.includes(".snap") ||
+        normalizedFullPath.includes(".test.") ||
+        normalizedFullPath.includes(".mock-harness.") ||
+        normalizedFullPath.includes(".spec.") ||
+        normalizedFullPath.includes(".fixture.") ||
+        normalizedFullPath.includes(".snap") ||
         // src/plugin-sdk is the curated bridge layer; validate its contracts with dedicated
         // plugin-sdk guardrails instead of the generic "core should not touch extensions" rule.
-        fullPath.includes(`${resolve(ROOT_DIR, "plugin-sdk")}/`)
+        normalizedFullPath.includes(`${normalizedPluginSdkDir}/`)
       ) {
         continue;
       }
@@ -283,6 +290,7 @@ function collectExtensionFiles(extensionId: string): string[] {
     }
     for (const entry of readdirSync(current, { withFileTypes: true })) {
       const fullPath = resolve(current, entry.name);
+      const normalizedFullPath = normalizePath(fullPath);
       if (entry.isDirectory()) {
         if (entry.name === "node_modules" || entry.name === "dist" || entry.name === "coverage") {
           continue;
@@ -297,11 +305,11 @@ function collectExtensionFiles(extensionId: string): string[] {
         continue;
       }
       if (
-        fullPath.includes(".test.") ||
-        fullPath.includes(".test-") ||
-        fullPath.includes(".spec.") ||
-        fullPath.includes(".fixture.") ||
-        fullPath.includes(".snap") ||
+        normalizedFullPath.includes(".test.") ||
+        normalizedFullPath.includes(".test-") ||
+        normalizedFullPath.includes(".spec.") ||
+        normalizedFullPath.includes(".fixture.") ||
+        normalizedFullPath.includes(".snap") ||
         entry.name === "runtime-api.ts"
       ) {
         continue;
@@ -392,6 +400,16 @@ describe("channel import guardrails", () => {
     }
   });
 
+  it("keeps bundled extension source files off legacy core send-deps src imports", () => {
+    const legacyCoreSendDepsImport = /["'][^"']*src\/infra\/outbound\/send-deps\.[cm]?[jt]s["']/;
+    for (const file of collectExtensionSourceFiles()) {
+      const text = readFileSync(file, "utf8");
+      expect(text, `${file} should not import src/infra/outbound/send-deps.*`).not.toMatch(
+        legacyCoreSendDepsImport,
+      );
+    }
+  });
+
   it("keeps core production files off extension private src imports", () => {
     for (const file of collectCoreSourceFiles()) {
       const text = readFileSync(file, "utf8");
diff --git a/src/plugins/loader.test.ts b/src/plugins/loader.test.ts
index edc172e03d0..fc0f6c2f208 100644
--- a/src/plugins/loader.test.ts
+++ b/src/plugins/loader.test.ts
@@ -101,6 +101,16 @@ function makeTempDir() {
   return dir;
 }
 
+function withCwd<T>(cwd: string, run: () => T): T {
+  const previousCwd = process.cwd();
+  process.chdir(cwd);
+  try {
+    return run();
+  } finally {
+    process.chdir(previousCwd);
+  }
+}
+
 function writePlugin(params: {
   id: string;
   body: string;
@@ -299,17 +309,43 @@ function createPluginSdkAliasFixture(params?: {
   distFile?: string;
   srcBody?: string;
   distBody?: string;
+  packageName?: string;
+  packageExports?: Record<string, unknown>;
+  trustedRootIndicators?: boolean;
+  trustedRootIndicatorMode?: "bin+marker" | "cli-entry-only" | "none";
 }) {
   const root = makeTempDir();
   const srcFile = path.join(root, "src", "plugin-sdk", params?.srcFile ?? "index.ts");
   const distFile = path.join(root, "dist", "plugin-sdk", params?.distFile ?? "index.js");
   mkdirSafe(path.dirname(srcFile));
   mkdirSafe(path.dirname(distFile));
-  fs.writeFileSync(
-    path.join(root, "package.json"),
-    JSON.stringify({ name: "openclaw", type: "module" }, null, 2),
-    "utf-8",
-  );
+  const trustedRootIndicatorMode =
+    params?.trustedRootIndicatorMode ??
+    (params?.trustedRootIndicators === false ? "none" : "bin+marker");
+  const packageJson: Record<string, unknown> = {
+    name: params?.packageName ?? "openclaw",
+    type: "module",
+  };
+  if (trustedRootIndicatorMode === "bin+marker") {
+    packageJson.bin = {
+      openclaw: "openclaw.mjs",
+    };
+  }
+  if (params?.packageExports || trustedRootIndicatorMode === "cli-entry-only") {
+    const trustedExports: Record<string, unknown> =
+      trustedRootIndicatorMode === "cli-entry-only"
+        ? { "./cli-entry": { default: "./dist/cli-entry.js" } }
+        : {};
+    packageJson.exports = {
+      "./plugin-sdk": { default: "./dist/plugin-sdk/index.js" },
+      ...trustedExports,
+      ...params?.packageExports,
+    };
+  }
+  fs.writeFileSync(path.join(root, "package.json"), JSON.stringify(packageJson, null, 2), "utf-8");
+  if (trustedRootIndicatorMode === "bin+marker") {
+    fs.writeFileSync(path.join(root, "openclaw.mjs"), "export {};\n", "utf-8");
+  }
   fs.writeFileSync(srcFile, params?.srcBody ?? "export {};\n", "utf-8");
   fs.writeFileSync(distFile, params?.distBody ?? "export {};\n", "utf-8");
   return { root, srcFile, distFile };
@@ -3326,10 +3362,126 @@ module.exports = {
   });
 
   it("derives plugin-sdk subpaths from package exports", () => {
-    const subpaths = __testing.listPluginSdkExportedSubpaths();
-    expect(subpaths).toContain("telegram");
-    expect(subpaths).not.toContain("compat");
-    expect(subpaths).not.toContain("root-alias");
+    const fixture = createPluginSdkAliasFixture({
+      packageExports: {
+        "./plugin-sdk/compat": { default: "./dist/plugin-sdk/compat.js" },
+        "./plugin-sdk/telegram": { default: "./dist/plugin-sdk/telegram.js" },
+        "./plugin-sdk/nested/value": { default: "./dist/plugin-sdk/nested/value.js" },
+      },
+    });
+    const subpaths = __testing.listPluginSdkExportedSubpaths({
+      modulePath: path.join(fixture.root, "src", "plugins", "loader.ts"),
+    });
+    expect(subpaths).toEqual(["compat", "telegram"]);
+  });
+
+  it("derives plugin-sdk subpaths from nearest package exports even when package name is renamed", () => {
+    const fixture = createPluginSdkAliasFixture({
+      packageName: "moltbot",
+      packageExports: {
+        "./plugin-sdk/core": { default: "./dist/plugin-sdk/core.js" },
+        "./plugin-sdk/channel-runtime": { default: "./dist/plugin-sdk/channel-runtime.js" },
+        "./plugin-sdk/compat": { default: "./dist/plugin-sdk/compat.js" },
+      },
+    });
+    const subpaths = __testing.listPluginSdkExportedSubpaths({
+      modulePath: path.join(fixture.root, "src", "plugins", "loader.ts"),
+    });
+    expect(subpaths).toEqual(["channel-runtime", "compat", "core"]);
+  });
+
+  it("derives plugin-sdk subpaths via cwd fallback when module path is a transpiler cache and package is renamed", () => {
+    const fixture = createPluginSdkAliasFixture({
+      packageName: "moltbot",
+      packageExports: {
+        "./plugin-sdk/core": { default: "./dist/plugin-sdk/core.js" },
+        "./plugin-sdk/channel-runtime": { default: "./dist/plugin-sdk/channel-runtime.js" },
+      },
+    });
+    const subpaths = withCwd(fixture.root, () =>
+      __testing.listPluginSdkExportedSubpaths({
+        modulePath: "/tmp/tsx-cache/openclaw-loader.js",
+      }),
+    );
+    expect(subpaths).toEqual(["channel-runtime", "core"]);
+  });
+
+  it("resolves plugin-sdk alias files via cwd fallback when module path is a transpiler cache and package is renamed", () => {
+    const fixture = createPluginSdkAliasFixture({
+      srcFile: "channel-runtime.ts",
+      distFile: "channel-runtime.js",
+      packageName: "moltbot",
+      packageExports: {
+        "./plugin-sdk/channel-runtime": { default: "./dist/plugin-sdk/channel-runtime.js" },
+      },
+    });
+    const resolved = withCwd(fixture.root, () =>
+      resolvePluginSdkAlias({
+        root: fixture.root,
+        srcFile: "channel-runtime.ts",
+        distFile: "channel-runtime.js",
+        modulePath: "/tmp/tsx-cache/openclaw-loader.js",
+        env: { NODE_ENV: undefined },
+      }),
+    );
+    expect(resolved).not.toBeNull();
+    expect(fs.realpathSync(resolved ?? "")).toBe(fs.realpathSync(fixture.srcFile));
+  });
+
+  it("does not derive plugin-sdk subpaths from cwd fallback when package root is not an OpenClaw root", () => {
+    const fixture = createPluginSdkAliasFixture({
+      packageName: "moltbot",
+      trustedRootIndicators: false,
+      packageExports: {
+        "./plugin-sdk/core": { default: "./dist/plugin-sdk/core.js" },
+        "./plugin-sdk/channel-runtime": { default: "./dist/plugin-sdk/channel-runtime.js" },
+      },
+    });
+    const subpaths = withCwd(fixture.root, () =>
+      __testing.listPluginSdkExportedSubpaths({
+        modulePath: "/tmp/tsx-cache/openclaw-loader.js",
+      }),
+    );
+    expect(subpaths).toEqual([]);
+  });
+
+  it("derives plugin-sdk subpaths via cwd fallback when trusted root indicator is cli-entry export", () => {
+    const fixture = createPluginSdkAliasFixture({
+      packageName: "moltbot",
+      trustedRootIndicatorMode: "cli-entry-only",
+      packageExports: {
+        "./plugin-sdk/core": { default: "./dist/plugin-sdk/core.js" },
+        "./plugin-sdk/channel-runtime": { default: "./dist/plugin-sdk/channel-runtime.js" },
+      },
+    });
+    const subpaths = withCwd(fixture.root, () =>
+      __testing.listPluginSdkExportedSubpaths({
+        modulePath: "/tmp/tsx-cache/openclaw-loader.js",
+      }),
+    );
+    expect(subpaths).toEqual(["channel-runtime", "core"]);
+  });
+
+  it("does not resolve plugin-sdk alias files from cwd fallback when package root is not an OpenClaw root", () => {
+    const fixture = createPluginSdkAliasFixture({
+      srcFile: "channel-runtime.ts",
+      distFile: "channel-runtime.js",
+      packageName: "moltbot",
+      trustedRootIndicators: false,
+      packageExports: {
+        "./plugin-sdk/channel-runtime": { default: "./dist/plugin-sdk/channel-runtime.js" },
+      },
+    });
+    const resolved = withCwd(fixture.root, () =>
+      resolvePluginSdkAlias({
+        root: fixture.root,
+        srcFile: "channel-runtime.ts",
+        distFile: "channel-runtime.js",
+        modulePath: "/tmp/tsx-cache/openclaw-loader.js",
+        env: { NODE_ENV: undefined },
+      }),
+    );
+    expect(resolved).toBeNull();
   });
 
   it("configures the plugin loader jiti boundary to prefer native dist modules", () => {
@@ -3361,22 +3513,152 @@ module.exports = {
       "src",
       "channel.runtime.ts",
     );
-    const discordVoiceRuntime = path.join(
-      process.cwd(),
-      "extensions",
-      "discord",
-      "src",
-      "voice",
-      "manager.runtime.ts",
-    );
 
     await expect(jiti.import(discordChannelRuntime)).resolves.toMatchObject({
       discordSetupWizard: expect.any(Object),
     });
-    await expect(jiti.import(discordVoiceRuntime)).resolves.toMatchObject({
-      DiscordVoiceManager: expect.any(Function),
-      DiscordVoiceReadyListener: expect.any(Function),
+  }, 240_000);
+
+  it("loads copied imessage runtime sources from git-style paths with plugin-sdk aliases (#49806)", async () => {
+    const copiedExtensionRoot = path.join(makeTempDir(), "extensions", "imessage");
+    const copiedSourceDir = path.join(copiedExtensionRoot, "src");
+    const copiedPluginSdkDir = path.join(copiedExtensionRoot, "plugin-sdk");
+    mkdirSafe(copiedSourceDir);
+    mkdirSafe(copiedPluginSdkDir);
+    const jitiBaseFile = path.join(copiedSourceDir, "__jiti-base__.mjs");
+    fs.writeFileSync(jitiBaseFile, "export {};\n", "utf-8");
+    fs.writeFileSync(
+      path.join(copiedSourceDir, "channel.runtime.ts"),
+      `import { resolveOutboundSendDep } from "openclaw/plugin-sdk/channel-runtime";
+import { PAIRING_APPROVED_MESSAGE } from "../runtime-api.js";
+
+export const copiedRuntimeMarker = {
+  resolveOutboundSendDep,
+  PAIRING_APPROVED_MESSAGE,
+};
+`,
+      "utf-8",
+    );
+    fs.writeFileSync(
+      path.join(copiedExtensionRoot, "runtime-api.ts"),
+      `export const PAIRING_APPROVED_MESSAGE = "paired";
+`,
+      "utf-8",
+    );
+    const copiedChannelRuntimeShim = path.join(copiedPluginSdkDir, "channel-runtime.ts");
+    fs.writeFileSync(
+      copiedChannelRuntimeShim,
+      `export function resolveOutboundSendDep() {
+  return "shimmed";
+}
+`,
+      "utf-8",
+    );
+    const copiedChannelRuntime = path.join(copiedExtensionRoot, "src", "channel.runtime.ts");
+    const jitiBaseUrl = pathToFileURL(jitiBaseFile).href;
+
+    const withoutAlias = createJiti(jitiBaseUrl, {
+      ...__testing.buildPluginLoaderJitiOptions({}),
+      tryNative: false,
     });
+    await expect(withoutAlias.import(copiedChannelRuntime)).rejects.toThrow(
+      /plugin-sdk\/channel-runtime/,
+    );
+
+    const withAlias = createJiti(jitiBaseUrl, {
+      ...__testing.buildPluginLoaderJitiOptions({
+        "openclaw/plugin-sdk/channel-runtime": copiedChannelRuntimeShim,
+      }),
+      tryNative: false,
+    });
+    await expect(withAlias.import(copiedChannelRuntime)).resolves.toMatchObject({
+      copiedRuntimeMarker: {
+        PAIRING_APPROVED_MESSAGE: "paired",
+        resolveOutboundSendDep: expect.any(Function),
+      },
+    });
+  });
+
+  it("loads git-style package extension entries through the plugin loader when they import plugin-sdk channel-runtime (#49806)", () => {
+    useNoBundledPlugins();
+    const pluginId = "imessage-loader-regression";
+    const gitExtensionRoot = path.join(
+      makeTempDir(),
+      "git-source-checkout",
+      "extensions",
+      pluginId,
+    );
+    const gitSourceDir = path.join(gitExtensionRoot, "src");
+    mkdirSafe(gitSourceDir);
+
+    fs.writeFileSync(
+      path.join(gitExtensionRoot, "package.json"),
+      JSON.stringify(
+        {
+          name: `@openclaw/${pluginId}`,
+          version: "0.0.1",
+          type: "module",
+          openclaw: {
+            extensions: ["./src/index.ts"],
+          },
+        },
+        null,
+        2,
+      ),
+      "utf-8",
+    );
+    fs.writeFileSync(
+      path.join(gitExtensionRoot, "openclaw.plugin.json"),
+      JSON.stringify(
+        {
+          id: pluginId,
+          configSchema: EMPTY_PLUGIN_SCHEMA,
+        },
+        null,
+        2,
+      ),
+      "utf-8",
+    );
+    fs.writeFileSync(
+      path.join(gitSourceDir, "channel.runtime.ts"),
+      `import { resolveOutboundSendDep } from "openclaw/plugin-sdk/channel-runtime";
+
+export function runtimeProbeType() {
+  return typeof resolveOutboundSendDep;
+}
+`,
+      "utf-8",
+    );
+    fs.writeFileSync(
+      path.join(gitSourceDir, "index.ts"),
+      `import { runtimeProbeType } from "./channel.runtime.ts";
+
+export default {
+  id: ${JSON.stringify(pluginId)},
+  register() {
+    if (runtimeProbeType() !== "function") {
+      throw new Error("channel-runtime import did not resolve");
+    }
+  },
+};
+`,
+      "utf-8",
+    );
+
+    const registry = withEnv({ NODE_ENV: "production", VITEST: undefined }, () =>
+      loadOpenClawPlugins({
+        cache: false,
+        workspaceDir: gitExtensionRoot,
+        config: {
+          plugins: {
+            load: { paths: [gitExtensionRoot] },
+            allow: [pluginId],
+          },
+        },
+      }),
+    );
+    const record = registry.plugins.find((entry) => entry.id === pluginId);
+    expect(record?.status).toBe("loaded");
   });
 
   it("loads source TypeScript plugins that route through local runtime shims", () => {
diff --git a/src/plugins/sdk-alias.ts b/src/plugins/sdk-alias.ts
index 7f172b8d3dd..df8ec526271 100644
--- a/src/plugins/sdk-alias.ts
+++ b/src/plugins/sdk-alias.ts
@@ -12,10 +12,83 @@ export type LoaderModuleResolveParams = {
   moduleUrl?: string;
 };
 
+type PluginSdkPackageJson = {
+  exports?: Record<string, unknown>;
+  bin?: string | Record<string, unknown>;
+};
+
 function resolveLoaderModulePath(params: LoaderModuleResolveParams = {}): string {
   return params.modulePath ?? fileURLToPath(params.moduleUrl ?? import.meta.url);
 }
 
+function readPluginSdkPackageJson(packageRoot: string): PluginSdkPackageJson | null {
+  try {
+    const pkgRaw = fs.readFileSync(path.join(packageRoot, "package.json"), "utf-8");
+    return JSON.parse(pkgRaw) as PluginSdkPackageJson;
+  } catch {
+    return null;
+  }
+}
+
+function listPluginSdkSubpathsFromPackageJson(pkg: PluginSdkPackageJson): string[] {
+  return Object.keys(pkg.exports ?? {})
+    .filter((key) => key.startsWith("./plugin-sdk/"))
+    .map((key) => key.slice("./plugin-sdk/".length))
+    .filter((subpath) => Boolean(subpath) && !subpath.includes("/"))
+    .toSorted();
+}
+
+function hasTrustedOpenClawRootIndicator(params: {
+  packageRoot: string;
+  packageJson: PluginSdkPackageJson;
+}): boolean {
+  const packageExports = params.packageJson.exports ?? {};
+  const hasPluginSdkRootExport = Object.prototype.hasOwnProperty.call(
+    packageExports,
+    "./plugin-sdk",
+  );
+  if (!hasPluginSdkRootExport) {
+    return false;
+  }
+  const hasCliEntryExport = Object.prototype.hasOwnProperty.call(packageExports, "./cli-entry");
+  const hasOpenClawBin =
+    (typeof params.packageJson.bin === "string" &&
+      params.packageJson.bin.toLowerCase().includes("openclaw")) ||
+    (typeof params.packageJson.bin === "object" &&
+      params.packageJson.bin !== null &&
+      typeof params.packageJson.bin.openclaw === "string");
+  const hasOpenClawEntrypoint = fs.existsSync(path.join(params.packageRoot, "openclaw.mjs"));
+  return hasCliEntryExport || hasOpenClawBin || hasOpenClawEntrypoint;
+}
+
+function readPluginSdkSubpathsFromPackageRoot(packageRoot: string): string[] | null {
+  const pkg = readPluginSdkPackageJson(packageRoot);
+  if (!pkg) {
+    return null;
+  }
+  if (!hasTrustedOpenClawRootIndicator({ packageRoot, packageJson: pkg })) {
+    return null;
+  }
+  const subpaths = listPluginSdkSubpathsFromPackageJson(pkg);
+  return subpaths.length > 0 ? subpaths : null;
+}
+
+function findNearestPluginSdkPackageRoot(startDir: string, maxDepth = 12): string | null {
+  let cursor = path.resolve(startDir);
+  for (let i = 0; i < maxDepth; i += 1) {
+    const subpaths = readPluginSdkSubpathsFromPackageRoot(cursor);
+    if (subpaths) {
+      return cursor;
+    }
+    const parent = path.dirname(cursor);
+    if (parent === cursor) {
+      break;
+    }
+    cursor = parent;
+  }
+  return null;
+}
+
 export function resolveLoaderPackageRoot(
   params: LoaderModuleResolveParams & { modulePath: string },
 ): string | null {
@@ -33,6 +106,28 @@ export function resolveLoaderPackageRoot(
   });
 }
 
+function resolveLoaderPluginSdkPackageRoot(
+  params: LoaderModuleResolveParams & { modulePath: string },
+): string | null {
+  const cwd = params.cwd ?? path.dirname(params.modulePath);
+  const fromCwd = resolveOpenClawPackageRootSync({ cwd });
+  const fromExplicitHints =
+    params.argv1 || params.moduleUrl
+      ? resolveOpenClawPackageRootSync({
+          cwd,
+          ...(params.argv1 ? { argv1: params.argv1 } : {}),
+          ...(params.moduleUrl ? { moduleUrl: params.moduleUrl } : {}),
+        })
+      : null;
+  return (
+    fromCwd ??
+    fromExplicitHints ??
+    findNearestPluginSdkPackageRoot(path.dirname(params.modulePath)) ??
+    (params.cwd ? findNearestPluginSdkPackageRoot(params.cwd) : null) ??
+    findNearestPluginSdkPackageRoot(process.cwd())
+  );
+}
+
 export function resolvePluginSdkAliasCandidateOrder(params: {
   modulePath: string;
   isProduction: boolean;
@@ -54,7 +149,7 @@ export function listPluginSdkAliasCandidates(params: {
     modulePath: params.modulePath,
     isProduction: process.env.NODE_ENV === "production",
   });
-  const packageRoot = resolveLoaderPackageRoot(params);
+  const packageRoot = resolveLoaderPluginSdkPackageRoot(params);
   if (packageRoot) {
     const candidateMap = {
       src: path.join(packageRoot, "src", "plugin-sdk", params.srcFile),
@@ -113,9 +208,7 @@ const cachedPluginSdkExportedSubpaths = new Map<string, string[]>();
 
 export function listPluginSdkExportedSubpaths(params: { modulePath?: string } = {}): string[] {
   const modulePath = params.modulePath ?? fileURLToPath(import.meta.url);
-  const packageRoot = resolveOpenClawPackageRootSync({
-    cwd: path.dirname(modulePath),
-  });
+  const packageRoot = resolveLoaderPluginSdkPackageRoot({ modulePath });
   if (!packageRoot) {
     return [];
   }
@@ -123,21 +216,9 @@ export function listPluginSdkExportedSubpaths(params: { modulePath?: string } =
   if (cached) {
     return cached;
   }
-  try {
-    const pkgRaw = fs.readFileSync(path.join(packageRoot, "package.json"), "utf-8");
-    const pkg = JSON.parse(pkgRaw) as {
-      exports?: Record<string, unknown>;
-    };
-    const subpaths = Object.keys(pkg.exports ?? {})
-      .filter((key) => key.startsWith("./plugin-sdk/"))
-      .map((key) => key.slice("./plugin-sdk/".length))
-      .filter((subpath) => Boolean(subpath) && !subpath.includes("/"))
-      .toSorted();
-    cachedPluginSdkExportedSubpaths.set(packageRoot, subpaths);
-    return subpaths;
-  } catch {
-    return [];
-  }
+  const subpaths = readPluginSdkSubpathsFromPackageRoot(packageRoot) ?? [];
+  cachedPluginSdkExportedSubpaths.set(packageRoot, subpaths);
+  return subpaths;
 }
 
 export function resolvePluginSdkScopedAliasMap(