diff --git a/AGENTS.md b/AGENTS.md
index 290528191c8..f6a03f44a04 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -59,11 +59,13 @@ Scoped guides:
 - Install: `pnpm install` (Bun supported; keep lockfiles/patches aligned if touched).
 - Dev CLI: `pnpm openclaw ...` or `pnpm dev`.
 - Build: `pnpm build`
-- Smart local gate: `pnpm check:changed`
+- Smart local gate: `pnpm check:changed` (scoped typecheck/lint/guards + relevant tests)
 - Explain smart gate: `pnpm changed:lanes --json`
 - Pre-commit view: `pnpm check:changed --staged`
-- Normal full prod sweep: `pnpm check`
+- Normal full prod sweep: `pnpm check` (prod typecheck/lint/guards, no tests)
 - Full tests: `pnpm test`
+- Changed tests only: `pnpm test:changed`
+- Extension tests: `pnpm test:extensions` or `pnpm test extensions` = all extension shards; `pnpm test extensions/<id>` = one extension lane. Heavy channels/OpenAI have dedicated shards.
 - Targeted tests: `pnpm test <path-or-filter> [vitest args...]`; do not call raw `vitest`.
 - Coverage: `pnpm test:coverage`
 - Format check/fix: `pnpm format:check` / `pnpm format`
@@ -92,7 +94,7 @@ Scoped guides:
   - extension tests => extension test typecheck/tests only
   - public SDK/plugin contract => extension prod/test validation too
   - unknown root/config => all lanes
-- Local loop: prefer `pnpm check:changed`; use `pnpm check` for full prod TS/lint sweep.
+- Local loop: prefer `pnpm check:changed`; use `pnpm test:changed` for tests only; use `pnpm check` for full prod TS/lint sweep without tests.
 - Landing on `main`: verify touched surface near landing; default bar is `pnpm check` + `pnpm test` when feasible.
 - Hard build gate: run/pass `pnpm build` before push if build output, packaging, lazy/module boundaries, or published surfaces can change.
 - Do not land related failing format/lint/type/build/tests. If failures are unrelated on latest `origin/main`, say so and give scoped proof.
diff --git a/docs/reference/test.md b/docs/reference/test.md
index 5c78b81db0b..8df68c4109e 100644
--- a/docs/reference/test.md
+++ b/docs/reference/test.md
@@ -15,14 +15,13 @@ title: "Tests"
 - `pnpm test:changed`: expands changed git paths into scoped Vitest lanes when the diff only touches routable source/test files. Config/setup changes still fall back to the native root projects run so wiring edits rerun broadly when needed.
 - `pnpm changed:lanes`: shows the architectural lanes triggered by the diff against `origin/main`.
 - `pnpm check:changed`: runs the smart changed gate for the diff against `origin/main`. It runs core work with core test lanes, extension work with extension test lanes, test-only work with test typecheck/tests only, and expands public Plugin SDK or plugin-contract changes to extension validation.
-- `pnpm test`: routes explicit file/directory targets through scoped Vitest lanes. Untargeted runs now execute eleven sequential shard configs (`vitest.full-core-unit-src.config.ts`, `vitest.full-core-unit-security.config.ts`, `vitest.full-core-unit-ui.config.ts`, `vitest.full-core-unit-support.config.ts`, `vitest.full-core-support-boundary.config.ts`, `vitest.full-core-contracts.config.ts`, `vitest.full-core-bundled.config.ts`, `vitest.full-core-runtime.config.ts`, `vitest.full-agentic.config.ts`, `vitest.full-auto-reply.config.ts`, `vitest.full-extensions.config.ts`) instead of one giant root-project process.
+- `pnpm test`: routes explicit file/directory targets through scoped Vitest lanes. Untargeted runs use fixed shard groups and expand to leaf configs for local parallel execution; the extension group always expands to the per-extension shard configs instead of one giant root-project process.
 - Selected `plugin-sdk` and `commands` test files now route through dedicated light lanes that keep only `test/setup.ts`, leaving runtime-heavy cases on their existing lanes.
 - Selected `plugin-sdk` and `commands` helper source files also map `pnpm test:changed` to explicit sibling tests in those light lanes, so small helper edits avoid rerunning the heavy runtime-backed suites.
 - `auto-reply` now also splits into three dedicated configs (`core`, `top-level`, `reply`) so the reply harness does not dominate the lighter top-level status/token/helper tests.
 - Base Vitest config now defaults to `pool: "threads"` and `isolate: false`, with the shared non-isolated runner enabled across the repo configs.
 - `pnpm test:channels` runs `vitest.channels.config.ts`.
-- `pnpm test:extensions` runs `vitest.extensions.config.ts`.
-- `pnpm test:extensions`: runs extension/plugin suites.
+- `pnpm test:extensions` and `pnpm test extensions` run all extension/plugin shards. Heavy channel extensions and OpenAI run as dedicated shards; other extension groups stay batched. Use `pnpm test extensions/<id>` for one bundled plugin lane.
 - `pnpm test:perf:imports`: enables Vitest import-duration + import-breakdown reporting, while still using scoped lane routing for explicit file/directory targets.
 - `pnpm test:perf:imports:changed`: same import profiling, but only for files changed since `origin/main`.
 - `pnpm test:perf:changed:bench -- --ref <git-ref>` benchmarks the routed changed-mode path against the native root-project run for the same committed git diff.
diff --git a/package.json b/package.json
index 171c8a045af..1e3faca8a1f 100644
--- a/package.json
+++ b/package.json
@@ -1437,7 +1437,7 @@
     "test:e2e": "node scripts/run-vitest.mjs run --config test/vitest/vitest.e2e.config.ts",
     "test:e2e:openshell": "OPENCLAW_E2E_OPENSHELL=1 node scripts/run-vitest.mjs run --config test/vitest/vitest.e2e.config.ts extensions/openshell/src/backend.e2e.test.ts",
     "test:extension": "node scripts/test-extension.mjs",
-    "test:extensions": "node scripts/run-vitest.mjs run --config test/vitest/vitest.extensions.config.ts",
+    "test:extensions": "node scripts/test-projects.mjs extensions",
     "test:extensions:batch": "node scripts/test-extension-batch.mjs",
     "test:extensions:memory": "node scripts/profile-extension-memory.mjs",
     "test:extensions:package-boundary": "node scripts/check-extension-package-tsc-boundary.mjs",
diff --git a/scripts/lib/extension-test-plan.mjs b/scripts/lib/extension-test-plan.mjs
index 1e9498e76b2..edeaad7ce57 100644
--- a/scripts/lib/extension-test-plan.mjs
+++ b/scripts/lib/extension-test-plan.mjs
@@ -3,6 +3,7 @@ import path from "node:path";
 import { channelTestRoots } from "../../test/vitest/vitest.channel-paths.mjs";
 import { isAcpxExtensionRoot } from "../../test/vitest/vitest.extension-acpx-paths.mjs";
 import { isBlueBubblesExtensionRoot } from "../../test/vitest/vitest.extension-bluebubbles-paths.mjs";
+import { resolveSplitChannelExtensionShard } from "../../test/vitest/vitest.extension-channel-split-paths.mjs";
 import { isDiffsExtensionRoot } from "../../test/vitest/vitest.extension-diffs-paths.mjs";
 import { isFeishuExtensionRoot } from "../../test/vitest/vitest.extension-feishu-paths.mjs";
 import { isIrcExtensionRoot } from "../../test/vitest/vitest.extension-irc-paths.mjs";
@@ -11,7 +12,10 @@ import { isMattermostExtensionRoot } from "../../test/vitest/vitest.extension-ma
 import { isMemoryExtensionRoot } from "../../test/vitest/vitest.extension-memory-paths.mjs";
 import { isMessagingExtensionRoot } from "../../test/vitest/vitest.extension-messaging-paths.mjs";
 import { isMsTeamsExtensionRoot } from "../../test/vitest/vitest.extension-msteams-paths.mjs";
-import { isProviderExtensionRoot } from "../../test/vitest/vitest.extension-provider-paths.mjs";
+import {
+  isProviderExtensionRoot,
+  isProviderOpenAiExtensionRoot,
+} from "../../test/vitest/vitest.extension-provider-paths.mjs";
 import { isTelegramExtensionRoot } from "../../test/vitest/vitest.extension-telegram-paths.mjs";
 import { isVoiceCallExtensionRoot } from "../../test/vitest/vitest.extension-voice-call-paths.mjs";
 import { isWhatsAppExtensionRoot } from "../../test/vitest/vitest.extension-whatsapp-paths.mjs";
@@ -111,6 +115,7 @@ export function resolveExtensionTestPlan(params = {}) {
 
   const roots = [relativeExtensionDir];
 
+  const splitChannelShard = resolveSplitChannelExtensionShard(relativeExtensionDir);
   const usesChannelConfig = roots.some((root) => channelTestRoots.includes(root));
   const usesAcpxConfig = roots.some((root) => isAcpxExtensionRoot(root));
   const usesDiffsConfig = roots.some((root) => isDiffsExtensionRoot(root));
@@ -126,40 +131,45 @@ export function resolveExtensionTestPlan(params = {}) {
   const usesMemoryConfig = roots.some((root) => isMemoryExtensionRoot(root));
   const usesMsTeamsConfig = roots.some((root) => isMsTeamsExtensionRoot(root));
   const usesMessagingConfig = roots.some((root) => isMessagingExtensionRoot(root));
+  const usesProviderOpenAiConfig = roots.some((root) => isProviderOpenAiExtensionRoot(root));
   const usesProviderConfig = roots.some((root) => isProviderExtensionRoot(root));
-  const config = usesChannelConfig
-    ? "test/vitest/vitest.extension-channels.config.ts"
-    : usesAcpxConfig
-      ? "test/vitest/vitest.extension-acpx.config.ts"
-      : usesDiffsConfig
-        ? "test/vitest/vitest.extension-diffs.config.ts"
-        : usesBlueBubblesConfig
-          ? "test/vitest/vitest.extension-bluebubbles.config.ts"
-          : usesFeishuConfig
-            ? "test/vitest/vitest.extension-feishu.config.ts"
-            : usesIrcConfig
-              ? "test/vitest/vitest.extension-irc.config.ts"
-              : usesMattermostConfig
-                ? "test/vitest/vitest.extension-mattermost.config.ts"
-                : usesMatrixConfig
-                  ? "test/vitest/vitest.extension-matrix.config.ts"
-                  : usesTelegramConfig
-                    ? "test/vitest/vitest.extension-telegram.config.ts"
-                    : usesVoiceCallConfig
-                      ? "test/vitest/vitest.extension-voice-call.config.ts"
-                      : usesWhatsAppConfig
-                        ? "test/vitest/vitest.extension-whatsapp.config.ts"
-                        : usesZaloConfig
-                          ? "test/vitest/vitest.extension-zalo.config.ts"
-                          : usesMemoryConfig
-                            ? "test/vitest/vitest.extension-memory.config.ts"
-                            : usesMsTeamsConfig
-                              ? "test/vitest/vitest.extension-msteams.config.ts"
-                              : usesMessagingConfig
-                                ? "test/vitest/vitest.extension-messaging.config.ts"
-                                : usesProviderConfig
-                                  ? "test/vitest/vitest.extension-providers.config.ts"
-                                  : "test/vitest/vitest.extensions.config.ts";
+  const config = splitChannelShard
+    ? splitChannelShard.config
+    : usesChannelConfig
+      ? "test/vitest/vitest.extension-channels.config.ts"
+      : usesAcpxConfig
+        ? "test/vitest/vitest.extension-acpx.config.ts"
+        : usesDiffsConfig
+          ? "test/vitest/vitest.extension-diffs.config.ts"
+          : usesBlueBubblesConfig
+            ? "test/vitest/vitest.extension-bluebubbles.config.ts"
+            : usesFeishuConfig
+              ? "test/vitest/vitest.extension-feishu.config.ts"
+              : usesIrcConfig
+                ? "test/vitest/vitest.extension-irc.config.ts"
+                : usesMattermostConfig
+                  ? "test/vitest/vitest.extension-mattermost.config.ts"
+                  : usesMatrixConfig
+                    ? "test/vitest/vitest.extension-matrix.config.ts"
+                    : usesTelegramConfig
+                      ? "test/vitest/vitest.extension-telegram.config.ts"
+                      : usesVoiceCallConfig
+                        ? "test/vitest/vitest.extension-voice-call.config.ts"
+                        : usesWhatsAppConfig
+                          ? "test/vitest/vitest.extension-whatsapp.config.ts"
+                          : usesZaloConfig
+                            ? "test/vitest/vitest.extension-zalo.config.ts"
+                            : usesMemoryConfig
+                              ? "test/vitest/vitest.extension-memory.config.ts"
+                              : usesMsTeamsConfig
+                                ? "test/vitest/vitest.extension-msteams.config.ts"
+                                : usesMessagingConfig
+                                  ? "test/vitest/vitest.extension-messaging.config.ts"
+                                  : usesProviderOpenAiConfig
+                                    ? "test/vitest/vitest.extension-provider-openai.config.ts"
+                                    : usesProviderConfig
+                                      ? "test/vitest/vitest.extension-providers.config.ts"
+                                      : "test/vitest/vitest.extensions.config.ts";
   const testFileCount = roots.reduce(
     (sum, root) => sum + countTestFiles(path.join(repoRoot, root)),
     0,
diff --git a/scripts/test-projects.mjs b/scripts/test-projects.mjs
index 15b6c4a3cdd..00864fccfea 100644
--- a/scripts/test-projects.mjs
+++ b/scripts/test-projects.mjs
@@ -11,6 +11,7 @@ import {
   applyParallelVitestCachePaths,
   buildFullSuiteVitestRunPlans,
   createVitestRunSpecs,
+  listFullExtensionVitestProjectConfigs,
   parseTestProjectsArgs,
   resolveParallelFullSuiteConcurrency,
   resolveChangedTargetArgs,
@@ -33,7 +34,7 @@ const FULL_SUITE_CONFIG_WEIGHT = new Map([
   ["test/vitest/vitest.agents.config.ts", 170],
   ["test/vitest/vitest.extension-voice-call.config.ts", 169],
   ["test/vitest/vitest.extensions.config.ts", 168],
-  ["test/vitest/vitest.extension-channels.config.ts", 167],
+  ["test/vitest/vitest.extension-provider-openai.config.ts", 167],
   ["test/vitest/vitest.runtime-config.config.ts", 166],
   ["test/vitest/vitest.contracts.config.ts", 165],
   ["test/vitest/vitest.tasks.config.ts", 165],
@@ -46,6 +47,7 @@ const FULL_SUITE_CONFIG_WEIGHT = new Map([
   ["test/vitest/vitest.wizard.config.ts", 130],
   ["test/vitest/vitest.unit-src.config.ts", 125],
   ["test/vitest/vitest.extension-matrix.config.ts", 100],
+  ["test/vitest/vitest.extension-discord.config.ts", 98],
   ["test/vitest/vitest.extension-providers.config.ts", 96],
   ["test/vitest/vitest.extension-telegram.config.ts", 94],
   ["test/vitest/vitest.extension-whatsapp.config.ts", 92],
@@ -54,6 +56,7 @@ const FULL_SUITE_CONFIG_WEIGHT = new Map([
   ["test/vitest/vitest.media.config.ts", 84],
   ["test/vitest/vitest.plugins.config.ts", 82],
   ["test/vitest/vitest.bundled.config.ts", 80],
+  ["test/vitest/vitest.extension-slack.config.ts", 78],
   ["test/vitest/vitest.commands-light.config.ts", 48],
   ["test/vitest/vitest.plugin-sdk.config.ts", 46],
   ["test/vitest/vitest.auto-reply-top-level.config.ts", 45],
@@ -70,6 +73,9 @@ const FULL_SUITE_CONFIG_WEIGHT = new Map([
   ["test/vitest/vitest.extension-feishu.config.ts", 18],
   ["test/vitest/vitest.extension-mattermost.config.ts", 16],
   ["test/vitest/vitest.extension-messaging.config.ts", 14],
+  ["test/vitest/vitest.extension-imessage.config.ts", 13],
+  ["test/vitest/vitest.extension-line.config.ts", 12],
+  ["test/vitest/vitest.extension-signal.config.ts", 11],
   ["test/vitest/vitest.extension-acpx.config.ts", 10],
   ["test/vitest/vitest.extension-diffs.config.ts", 8],
   ["test/vitest/vitest.extension-memory.config.ts", 6],
@@ -160,6 +166,19 @@ function orderFullSuiteSpecsForParallelRun(specs) {
   });
 }
 
+function isFullExtensionsProjectRun(specs) {
+  const fullExtensionProjectConfigs = new Set(listFullExtensionVitestProjectConfigs());
+  return (
+    specs.length > 1 &&
+    specs.every(
+      (spec) =>
+        spec.watchMode === false &&
+        spec.includePatterns === null &&
+        fullExtensionProjectConfigs.has(spec.config),
+    )
+  );
+}
+
 async function runVitestSpecsParallel(specs, concurrency) {
   let nextIndex = 0;
   let exitCode = 0;
@@ -216,6 +235,11 @@ async function main() {
           cwd: process.cwd(),
         });
 
+  if (runSpecs.length === 0) {
+    console.error("[test] no changed test targets; skipping Vitest.");
+    return;
+  }
+
   releaseLock = shouldAcquireLocalHeavyCheckLock(runSpecs, process.env)
     ? acquireLocalHeavyCheckLockSync({
         cwd: process.cwd(),
@@ -228,7 +252,8 @@ async function main() {
     targetArgs.length === 0 &&
     changedTargetArgs === null &&
     !runSpecs.some((spec) => spec.watchMode);
-  if (isFullSuiteRun) {
+  const isParallelShardRun = isFullSuiteRun || isFullExtensionsProjectRun(runSpecs);
+  if (isParallelShardRun) {
     const concurrency = resolveParallelFullSuiteConcurrency(runSpecs.length, process.env);
     if (concurrency > 1) {
       const localFullSuiteProfile = resolveLocalFullSuiteProfile(process.env);
diff --git a/scripts/test-projects.test-support.d.mts b/scripts/test-projects.test-support.d.mts
index d7445974733..04fa5b5fe2d 100644
--- a/scripts/test-projects.test-support.d.mts
+++ b/scripts/test-projects.test-support.d.mts
@@ -35,6 +35,8 @@ export function resolveChangedTargetArgs(
   listChangedPaths?: (baseRef: string, cwd: string) => string[],
 ): string[] | null;
 
+export function listFullExtensionVitestProjectConfigs(): string[];
+
 export function createVitestRunSpecs(
   args: string[],
   params?: {
diff --git a/scripts/test-projects.test-support.mjs b/scripts/test-projects.test-support.mjs
index 4da20a6fc4d..7173a2aa9fd 100644
--- a/scripts/test-projects.test-support.mjs
+++ b/scripts/test-projects.test-support.mjs
@@ -9,6 +9,7 @@ import {
 } from "../test/vitest/vitest.commands-light-paths.mjs";
 import { isAcpxExtensionRoot } from "../test/vitest/vitest.extension-acpx-paths.mjs";
 import { isBlueBubblesExtensionRoot } from "../test/vitest/vitest.extension-bluebubbles-paths.mjs";
+import { resolveSplitChannelExtensionShard } from "../test/vitest/vitest.extension-channel-split-paths.mjs";
 import { isDiffsExtensionRoot } from "../test/vitest/vitest.extension-diffs-paths.mjs";
 import { isFeishuExtensionRoot } from "../test/vitest/vitest.extension-feishu-paths.mjs";
 import { isIrcExtensionRoot } from "../test/vitest/vitest.extension-irc-paths.mjs";
@@ -17,7 +18,10 @@ import { isMattermostExtensionRoot } from "../test/vitest/vitest.extension-matte
 import { isMemoryExtensionRoot } from "../test/vitest/vitest.extension-memory-paths.mjs";
 import { isMessagingExtensionRoot } from "../test/vitest/vitest.extension-messaging-paths.mjs";
 import { isMsTeamsExtensionRoot } from "../test/vitest/vitest.extension-msteams-paths.mjs";
-import { isProviderExtensionRoot } from "../test/vitest/vitest.extension-provider-paths.mjs";
+import {
+  isProviderExtensionRoot,
+  isProviderOpenAiExtensionRoot,
+} from "../test/vitest/vitest.extension-provider-paths.mjs";
 import { isTelegramExtensionRoot } from "../test/vitest/vitest.extension-telegram-paths.mjs";
 import { isVoiceCallExtensionRoot } from "../test/vitest/vitest.extension-voice-call-paths.mjs";
 import { isWhatsAppExtensionRoot } from "../test/vitest/vitest.extension-whatsapp-paths.mjs";
@@ -32,6 +36,7 @@ import {
   isBoundaryTestFile,
   isBundledPluginDependentUnitTestFile,
 } from "../test/vitest/vitest.unit-paths.mjs";
+import { detectChangedLanes } from "./changed-lanes.mjs";
 import { isCiLikeEnv, resolveLocalFullSuiteProfile } from "./lib/vitest-local-scheduling.mjs";
 import { resolveVitestCliEntry, resolveVitestNodeArgs } from "./run-vitest.mjs";
 
@@ -53,14 +58,21 @@ const EXTENSION_ACPX_VITEST_CONFIG = "test/vitest/vitest.extension-acpx.config.t
 const EXTENSION_BLUEBUBBLES_VITEST_CONFIG = "test/vitest/vitest.extension-bluebubbles.config.ts";
 const EXTENSION_CHANNELS_VITEST_CONFIG = "test/vitest/vitest.extension-channels.config.ts";
 const EXTENSION_DIFFS_VITEST_CONFIG = "test/vitest/vitest.extension-diffs.config.ts";
+const EXTENSION_DISCORD_VITEST_CONFIG = "test/vitest/vitest.extension-discord.config.ts";
 const EXTENSION_FEISHU_VITEST_CONFIG = "test/vitest/vitest.extension-feishu.config.ts";
+const EXTENSION_IMESSAGE_VITEST_CONFIG = "test/vitest/vitest.extension-imessage.config.ts";
 const EXTENSION_IRC_VITEST_CONFIG = "test/vitest/vitest.extension-irc.config.ts";
+const EXTENSION_LINE_VITEST_CONFIG = "test/vitest/vitest.extension-line.config.ts";
 const EXTENSION_MATTERMOST_VITEST_CONFIG = "test/vitest/vitest.extension-mattermost.config.ts";
 const EXTENSION_MATRIX_VITEST_CONFIG = "test/vitest/vitest.extension-matrix.config.ts";
 const EXTENSION_MEMORY_VITEST_CONFIG = "test/vitest/vitest.extension-memory.config.ts";
 const EXTENSION_MSTEAMS_VITEST_CONFIG = "test/vitest/vitest.extension-msteams.config.ts";
 const EXTENSION_MESSAGING_VITEST_CONFIG = "test/vitest/vitest.extension-messaging.config.ts";
+const EXTENSION_PROVIDER_OPENAI_VITEST_CONFIG =
+  "test/vitest/vitest.extension-provider-openai.config.ts";
 const EXTENSION_PROVIDERS_VITEST_CONFIG = "test/vitest/vitest.extension-providers.config.ts";
+const EXTENSION_SIGNAL_VITEST_CONFIG = "test/vitest/vitest.extension-signal.config.ts";
+const EXTENSION_SLACK_VITEST_CONFIG = "test/vitest/vitest.extension-slack.config.ts";
 const EXTENSION_TELEGRAM_VITEST_CONFIG = "test/vitest/vitest.extension-telegram.config.ts";
 const EXTENSION_VOICE_CALL_VITEST_CONFIG = "test/vitest/vitest.extension-voice-call.config.ts";
 const EXTENSION_WHATSAPP_VITEST_CONFIG = "test/vitest/vitest.extension-whatsapp.config.ts";
@@ -105,18 +117,25 @@ const VITEST_CONFIG_BY_KIND = {
   daemon: DAEMON_VITEST_CONFIG,
   e2e: E2E_VITEST_CONFIG,
   extension: EXTENSIONS_VITEST_CONFIG,
+  extensionFull: FULL_EXTENSIONS_VITEST_CONFIG,
   extensionAcpx: EXTENSION_ACPX_VITEST_CONFIG,
   extensionBlueBubbles: EXTENSION_BLUEBUBBLES_VITEST_CONFIG,
   extensionChannel: EXTENSION_CHANNELS_VITEST_CONFIG,
   extensionDiffs: EXTENSION_DIFFS_VITEST_CONFIG,
+  extensionDiscord: EXTENSION_DISCORD_VITEST_CONFIG,
   extensionFeishu: EXTENSION_FEISHU_VITEST_CONFIG,
+  extensionImessage: EXTENSION_IMESSAGE_VITEST_CONFIG,
   extensionIrc: EXTENSION_IRC_VITEST_CONFIG,
+  extensionLine: EXTENSION_LINE_VITEST_CONFIG,
   extensionMatrix: EXTENSION_MATRIX_VITEST_CONFIG,
   extensionMattermost: EXTENSION_MATTERMOST_VITEST_CONFIG,
   extensionMemory: EXTENSION_MEMORY_VITEST_CONFIG,
   extensionMessaging: EXTENSION_MESSAGING_VITEST_CONFIG,
   extensionMsTeams: EXTENSION_MSTEAMS_VITEST_CONFIG,
+  extensionProviderOpenAi: EXTENSION_PROVIDER_OPENAI_VITEST_CONFIG,
   extensionProvider: EXTENSION_PROVIDERS_VITEST_CONFIG,
+  extensionSignal: EXTENSION_SIGNAL_VITEST_CONFIG,
+  extensionSlack: EXTENSION_SLACK_VITEST_CONFIG,
   extensionTelegram: EXTENSION_TELEGRAM_VITEST_CONFIG,
   extensionVoiceCall: EXTENSION_VOICE_CALL_VITEST_CONFIG,
   extensionWhatsApp: EXTENSION_WHATSAPP_VITEST_CONFIG,
@@ -148,6 +167,7 @@ const BROAD_CHANGED_RERUN_PATTERNS = [
   /^test\/setup(?:\.shared|\.extensions|-openclaw-runtime)?\.ts$/u,
   /^vitest(?:\..+)?\.(?:config\.ts|paths\.mjs)$/u,
   /^test\/vitest\/vitest(?:\..+)?\.(?:config\.ts|paths\.mjs)$/u,
+  /^test\/helpers\//u,
   /^scripts\/run-vitest\.mjs$/u,
   /^scripts\/test-projects(?:\.test-support)?\.mjs$/u,
 ];
@@ -260,7 +280,14 @@ function shouldKeepBroadChangedRun(changedPaths) {
 }
 
 function isRoutableChangedTarget(changedPath) {
-  return /^(?:src|test|extensions|ui|packages|apps)(?:\/|$)/u.test(changedPath);
+  return /^(?:src|test|extensions|ui|packages)(?:\/|$)/u.test(changedPath);
+}
+
+export function listFullExtensionVitestProjectConfigs() {
+  return (
+    fullSuiteVitestShards.find((shard) => shard.config === FULL_EXTENSIONS_VITEST_CONFIG)
+      ?.projects ?? []
+  );
 }
 
 export function resolveChangedTargetArgs(
@@ -276,8 +303,16 @@ export function resolveChangedTargetArgs(
   if (changedPaths.length === 0 || shouldKeepBroadChangedRun(changedPaths)) {
     return null;
   }
+  const changedLanes = detectChangedLanes(changedPaths);
+  if (changedLanes.lanes.all) {
+    return null;
+  }
   const routablePaths = changedPaths.filter(isRoutableChangedTarget);
-  return routablePaths.length > 0 ? [...new Set(routablePaths)] : null;
+  const targets = [...routablePaths];
+  if (changedLanes.extensionImpactFromCore) {
+    targets.push("extensions");
+  }
+  return [...new Set(targets)];
 }
 
 function classifyTarget(arg, cwd) {
@@ -295,8 +330,18 @@ function classifyTarget(arg, cwd) {
   ) {
     return "e2e";
   }
+  if (relative === "extensions") {
+    return "extensionFull";
+  }
   if (relative.startsWith("extensions/")) {
     const extensionRoot = relative.split("/").slice(0, 2).join("/");
+    const splitChannelShard = resolveSplitChannelExtensionShard(extensionRoot);
+    if (splitChannelShard) {
+      return splitChannelShard.kind;
+    }
+    if (isProviderOpenAiExtensionRoot(extensionRoot)) {
+      return "extensionProviderOpenAi";
+    }
     if (isChannelSurfaceTestFile(relative)) {
       return "extensionChannel";
     }
@@ -506,7 +551,11 @@ export function buildVitestRunPlans(
   const changedTargetArgs =
     targetArgs.length === 0 ? resolveChangedTargetArgs(args, cwd, listChangedPaths) : null;
   const activeTargetArgs = changedTargetArgs ?? targetArgs;
-  const activeForwardedArgs = changedTargetArgs ? stripChangedArgs(forwardedArgs) : forwardedArgs;
+  const activeForwardedArgs =
+    changedTargetArgs !== null ? stripChangedArgs(forwardedArgs) : forwardedArgs;
+  if (changedTargetArgs !== null && activeTargetArgs.length === 0) {
+    return [];
+  }
   if (activeTargetArgs.length === 0) {
     return [
       {
@@ -570,8 +619,11 @@ export function buildVitestRunPlans(
     "extensionAcpx",
     "extensionDiffs",
     "extensionBlueBubbles",
+    "extensionDiscord",
     "extensionFeishu",
+    "extensionImessage",
     "extensionIrc",
+    "extensionLine",
     "extensionMattermost",
     "extensionChannel",
     "extensionTelegram",
@@ -582,7 +634,11 @@ export function buildVitestRunPlans(
     "extensionMemory",
     "extensionMsTeams",
     "extensionMessaging",
+    "extensionProviderOpenAi",
     "extensionProvider",
+    "extensionSignal",
+    "extensionSlack",
+    "extensionFull",
     "channel",
     "extension",
   ];
@@ -592,6 +648,20 @@ export function buildVitestRunPlans(
     if (!grouped || grouped.length === 0) {
       continue;
     }
+    if (kind === "extensionFull") {
+      const configs = watchMode
+        ? [FULL_EXTENSIONS_VITEST_CONFIG]
+        : listFullExtensionVitestProjectConfigs();
+      for (const config of configs) {
+        plans.push({
+          config,
+          forwardedArgs: nonTargetArgs,
+          includePatterns: null,
+          watchMode,
+        });
+      }
+      continue;
+    }
     const config = VITEST_CONFIG_BY_KIND[kind] ?? DEFAULT_VITEST_CONFIG;
     const useCliTargetArgs =
       kind === "e2e" ||
diff --git a/src/scripts/test-projects.test.ts b/src/scripts/test-projects.test.ts
index a5b53c0b082..c24f9ab3351 100644
--- a/src/scripts/test-projects.test.ts
+++ b/src/scripts/test-projects.test.ts
@@ -785,12 +785,12 @@ describe("test-projects args", () => {
     ]);
   });
 
-  it("routes direct channel extension file targets to the channels config", () => {
+  it("routes direct Discord extension file targets to the Discord config", () => {
     expect(
       buildVitestRunPlans(["extensions/discord/src/monitor/message-handler.preflight.test.ts"]),
     ).toEqual([
       {
-        config: "test/vitest/vitest.extension-channels.config.ts",
+        config: "test/vitest/vitest.extension-discord.config.ts",
         forwardedArgs: [],
         includePatterns: ["extensions/discord/src/monitor/message-handler.preflight.test.ts"],
         watchMode: false,
@@ -809,10 +809,10 @@ describe("test-projects args", () => {
     ]);
   });
 
-  it("routes line extension targets to the extension channel config", () => {
+  it("routes line extension targets to the line config", () => {
     expect(buildVitestRunPlans(["extensions/line/src/send.test.ts"])).toEqual([
       {
-        config: "test/vitest/vitest.extension-channels.config.ts",
+        config: "test/vitest/vitest.extension-line.config.ts",
         forwardedArgs: [],
         includePatterns: ["extensions/line/src/send.test.ts"],
         watchMode: false,
@@ -831,10 +831,10 @@ describe("test-projects args", () => {
     ]);
   });
 
-  it("routes direct provider extension file targets to the extension providers config", () => {
+  it("routes direct OpenAI provider extension file targets to the OpenAI provider config", () => {
     expect(buildVitestRunPlans(["extensions/openai/openai-codex-provider.test.ts"])).toEqual([
       {
-        config: "test/vitest/vitest.extension-providers.config.ts",
+        config: "test/vitest/vitest.extension-provider-openai.config.ts",
         forwardedArgs: [],
         includePatterns: ["extensions/openai/openai-codex-provider.test.ts"],
         watchMode: false,
@@ -869,7 +869,7 @@ describe("test-projects args", () => {
         watchMode: false,
       },
       {
-        config: "test/vitest/vitest.extension-channels.config.ts",
+        config: "test/vitest/vitest.extension-discord.config.ts",
         forwardedArgs: ["-t", "mention"],
         includePatterns: ["extensions/discord/src/monitor/message-handler.preflight.test.ts"],
         watchMode: false,
@@ -886,7 +886,7 @@ describe("test-projects args", () => {
       ...VITEST_NODE_PREFIX,
       "run",
       "--config",
-      "test/vitest/vitest.extension-channels.config.ts",
+      "test/vitest/vitest.extension-discord.config.ts",
     ]);
     expect(spec?.includePatterns).toEqual([
       "extensions/discord/src/monitor/message-handler.preflight.test.ts",
diff --git a/test/scripts/test-extension.test.ts b/test/scripts/test-extension.test.ts
index f4c24330182..7d52487173f 100644
--- a/test/scripts/test-extension.test.ts
+++ b/test/scripts/test-extension.test.ts
@@ -33,12 +33,12 @@ function findExtensionWithoutTests() {
 }
 
 describe("scripts/test-extension.mjs", () => {
-  it("resolves channel-root extensions onto the channel vitest config", () => {
+  it("resolves split channel extensions onto their own vitest configs", () => {
     const plan = resolveExtensionTestPlan({ targetArg: "slack", cwd: process.cwd() });
 
     expect(plan.extensionId).toBe("slack");
     expect(plan.extensionDir).toBe(bundledPluginRoot("slack"));
-    expect(plan.config).toBe("test/vitest/vitest.extension-channels.config.ts");
+    expect(plan.config).toBe("test/vitest/vitest.extension-slack.config.ts");
     expect(plan.roots).toContain(bundledPluginRoot("slack"));
     expect(plan.hasTests).toBe(true);
   });
@@ -79,11 +79,11 @@ describe("scripts/test-extension.mjs", () => {
     expect(plan.hasTests).toBe(true);
   });
 
-  it("resolves provider extensions onto the provider vitest config", () => {
+  it("resolves OpenAI onto its own provider vitest config", () => {
     const plan = resolveExtensionTestPlan({ targetArg: "openai", cwd: process.cwd() });
 
     expect(plan.extensionId).toBe("openai");
-    expect(plan.config).toBe("test/vitest/vitest.extension-providers.config.ts");
+    expect(plan.config).toBe("test/vitest/vitest.extension-provider-openai.config.ts");
     expect(plan.roots).toContain(bundledPluginRoot("openai"));
     expect(plan.hasTests).toBe(true);
   });
@@ -183,7 +183,7 @@ describe("scripts/test-extension.mjs", () => {
 
     expect(plan.roots).toContain(bundledPluginRoot("line"));
     expect(plan.roots).not.toContain("src/line");
-    expect(plan.config).toBe("test/vitest/vitest.extension-channels.config.ts");
+    expect(plan.config).toBe("test/vitest/vitest.extension-line.config.ts");
     expect(plan.hasTests).toBe(true);
   });
 
@@ -294,13 +294,6 @@ describe("scripts/test-extension.mjs", () => {
         roots: [bundledPluginRoot("bluebubbles")],
         testFileCount: expect.any(Number),
       },
-      {
-        config: "test/vitest/vitest.extension-channels.config.ts",
-        estimatedCost: expect.any(Number),
-        extensionIds: ["line", "slack"],
-        roots: [bundledPluginRoot("slack"), bundledPluginRoot("line")],
-        testFileCount: expect.any(Number),
-      },
       {
         config: "test/vitest/vitest.extension-diffs.config.ts",
         estimatedCost: expect.any(Number),
@@ -322,6 +315,13 @@ describe("scripts/test-extension.mjs", () => {
         roots: [bundledPluginRoot("irc")],
         testFileCount: expect.any(Number),
       },
+      {
+        config: "test/vitest/vitest.extension-line.config.ts",
+        estimatedCost: expect.any(Number),
+        extensionIds: ["line"],
+        roots: [bundledPluginRoot("line")],
+        testFileCount: expect.any(Number),
+      },
       {
         config: "test/vitest/vitest.extension-matrix.config.ts",
         estimatedCost: expect.any(Number),
@@ -351,12 +351,19 @@ describe("scripts/test-extension.mjs", () => {
         testFileCount: expect.any(Number),
       },
       {
-        config: "test/vitest/vitest.extension-providers.config.ts",
+        config: "test/vitest/vitest.extension-provider-openai.config.ts",
         estimatedCost: expect.any(Number),
         extensionIds: ["openai"],
         roots: [bundledPluginRoot("openai")],
         testFileCount: expect.any(Number),
       },
+      {
+        config: "test/vitest/vitest.extension-slack.config.ts",
+        estimatedCost: expect.any(Number),
+        extensionIds: ["slack"],
+        roots: [bundledPluginRoot("slack")],
+        testFileCount: expect.any(Number),
+      },
       {
         config: "test/vitest/vitest.extension-telegram.config.ts",
         estimatedCost: expect.any(Number),
diff --git a/test/scripts/test-projects.test.ts b/test/scripts/test-projects.test.ts
index ff1794ec285..57c72291865 100644
--- a/test/scripts/test-projects.test.ts
+++ b/test/scripts/test-projects.test.ts
@@ -4,6 +4,7 @@ import {
   applyParallelVitestCachePaths,
   buildFullSuiteVitestRunPlans,
   buildVitestRunPlans,
+  listFullExtensionVitestProjectConfigs,
   shouldAcquireLocalHeavyCheckLock,
   resolveChangedTargetArgs,
   resolveParallelFullSuiteConcurrency,
@@ -28,12 +29,89 @@ describe("scripts/test-projects changed-target routing", () => {
     ).toBeNull();
   });
 
-  it("ignores changed files that cannot map to test lanes", () => {
+  it("keeps the broad changed run for shared test helpers", () => {
+    expect(
+      resolveChangedTargetArgs(["--changed", "origin/main"], process.cwd(), () => [
+        "test/helpers/channels/plugin.ts",
+      ]),
+    ).toBeNull();
+  });
+
+  it("keeps the broad changed run for unknown root surfaces", () => {
+    expect(
+      resolveChangedTargetArgs(["--changed", "origin/main"], process.cwd(), () => [
+        "unknown/file.txt",
+      ]),
+    ).toBeNull();
+  });
+
+  it("skips changed docs files that cannot map to test lanes", () => {
     expect(
       resolveChangedTargetArgs(["--changed", "origin/main"], process.cwd(), () => [
         "docs/help/testing.md",
       ]),
-    ).toBeNull();
+    ).toEqual([]);
+  });
+
+  it("skips root agent guidance changes instead of broad-running tests", () => {
+    expect(
+      buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => ["AGENTS.md"]),
+    ).toEqual([]);
+  });
+
+  it("skips app-only changes because app tests are separate from Vitest lanes", () => {
+    expect(
+      buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+        "apps/macos/OpenClaw/AppDelegate.swift",
+      ]),
+    ).toEqual([]);
+  });
+
+  it("adds extension tests for public plugin SDK changes", () => {
+    const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+      "src/plugin-sdk/provider-entry.ts",
+    ]);
+
+    expect(plans).toEqual([
+      {
+        config: "test/vitest/vitest.unit-fast.config.ts",
+        forwardedArgs: [],
+        includePatterns: ["src/plugin-sdk/provider-entry.test.ts"],
+        watchMode: false,
+      },
+      ...listFullExtensionVitestProjectConfigs().map((config) => ({
+        config,
+        forwardedArgs: [],
+        includePatterns: null,
+        watchMode: false,
+      })),
+    ]);
+  });
+
+  it("routes LM Studio changes to the provider extension lane", () => {
+    const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
+      "extensions/lmstudio/src/runtime.ts",
+    ]);
+
+    expect(plans).toEqual([
+      {
+        config: "test/vitest/vitest.extension-providers.config.ts",
+        forwardedArgs: [],
+        includePatterns: ["extensions/lmstudio/src/**/*.test.ts"],
+        watchMode: false,
+      },
+    ]);
+  });
+
+  it("routes the top-level extensions target to every extension shard", () => {
+    expect(buildVitestRunPlans(["extensions"], process.cwd())).toEqual(
+      listFullExtensionVitestProjectConfigs().map((config) => ({
+        config,
+        forwardedArgs: [],
+        includePatterns: null,
+        watchMode: false,
+      })),
+    );
   });
 
   it("narrows default-lane changed source files to include globs", () => {
@@ -115,7 +193,7 @@ describe("scripts/test-projects changed-target routing", () => {
     ]);
   });
 
-  it("routes changed plugin-sdk source allowlist files to sibling light tests", () => {
+  it("keeps changed plugin-sdk allowlist files on sibling light tests plus extension tests", () => {
     const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
       "src/plugin-sdk/provider-entry.ts",
     ]);
@@ -127,6 +205,12 @@ describe("scripts/test-projects changed-target routing", () => {
         includePatterns: ["src/plugin-sdk/provider-entry.test.ts"],
         watchMode: false,
       },
+      ...listFullExtensionVitestProjectConfigs().map((config) => ({
+        config,
+        forwardedArgs: [],
+        includePatterns: null,
+        watchMode: false,
+      })),
     ]);
   });
 
@@ -149,7 +233,7 @@ describe("scripts/test-projects changed-target routing", () => {
     ]);
   });
 
-  it("keeps non-allowlisted plugin-sdk source files on the heavy lane", () => {
+  it("keeps non-allowlisted plugin-sdk source files on the heavy lane plus extension tests", () => {
     const plans = buildVitestRunPlans(["--changed", "origin/main"], process.cwd(), () => [
       "src/plugin-sdk/facade-runtime.ts",
     ]);
@@ -161,6 +245,12 @@ describe("scripts/test-projects changed-target routing", () => {
         includePatterns: ["src/plugin-sdk/**/*.test.ts"],
         watchMode: false,
       },
+      ...listFullExtensionVitestProjectConfigs().map((config) => ({
+        config,
+        forwardedArgs: [],
+        includePatterns: null,
+        watchMode: false,
+      })),
     ]);
   });
 
@@ -316,16 +406,21 @@ describe("scripts/test-projects full-suite sharding", () => {
         "test/vitest/vitest.full-auto-reply.config.ts",
         "test/vitest/vitest.extension-acpx.config.ts",
         "test/vitest/vitest.extension-bluebubbles.config.ts",
-        "test/vitest/vitest.extension-channels.config.ts",
         "test/vitest/vitest.extension-diffs.config.ts",
+        "test/vitest/vitest.extension-discord.config.ts",
         "test/vitest/vitest.extension-feishu.config.ts",
+        "test/vitest/vitest.extension-imessage.config.ts",
         "test/vitest/vitest.extension-irc.config.ts",
+        "test/vitest/vitest.extension-line.config.ts",
         "test/vitest/vitest.extension-mattermost.config.ts",
         "test/vitest/vitest.extension-matrix.config.ts",
         "test/vitest/vitest.extension-memory.config.ts",
         "test/vitest/vitest.extension-messaging.config.ts",
         "test/vitest/vitest.extension-msteams.config.ts",
+        "test/vitest/vitest.extension-provider-openai.config.ts",
         "test/vitest/vitest.extension-providers.config.ts",
+        "test/vitest/vitest.extension-signal.config.ts",
+        "test/vitest/vitest.extension-slack.config.ts",
         "test/vitest/vitest.extension-telegram.config.ts",
         "test/vitest/vitest.extension-voice-call.config.ts",
         "test/vitest/vitest.extension-whatsapp.config.ts",
@@ -499,16 +594,21 @@ describe("scripts/test-projects full-suite sharding", () => {
       "test/vitest/vitest.auto-reply-reply.config.ts",
       "test/vitest/vitest.extension-acpx.config.ts",
       "test/vitest/vitest.extension-bluebubbles.config.ts",
-      "test/vitest/vitest.extension-channels.config.ts",
       "test/vitest/vitest.extension-diffs.config.ts",
+      "test/vitest/vitest.extension-discord.config.ts",
       "test/vitest/vitest.extension-feishu.config.ts",
+      "test/vitest/vitest.extension-imessage.config.ts",
       "test/vitest/vitest.extension-irc.config.ts",
+      "test/vitest/vitest.extension-line.config.ts",
       "test/vitest/vitest.extension-mattermost.config.ts",
       "test/vitest/vitest.extension-matrix.config.ts",
       "test/vitest/vitest.extension-memory.config.ts",
       "test/vitest/vitest.extension-messaging.config.ts",
       "test/vitest/vitest.extension-msteams.config.ts",
+      "test/vitest/vitest.extension-provider-openai.config.ts",
       "test/vitest/vitest.extension-providers.config.ts",
+      "test/vitest/vitest.extension-signal.config.ts",
+      "test/vitest/vitest.extension-slack.config.ts",
       "test/vitest/vitest.extension-telegram.config.ts",
       "test/vitest/vitest.extension-voice-call.config.ts",
       "test/vitest/vitest.extension-whatsapp.config.ts",
diff --git a/test/vitest-scoped-config.test.ts b/test/vitest-scoped-config.test.ts
index 8101931fad2..707d1841201 100644
--- a/test/vitest-scoped-config.test.ts
+++ b/test/vitest-scoped-config.test.ts
@@ -22,14 +22,20 @@ import { createExtensionAcpxVitestConfig } from "./vitest/vitest.extension-acpx.
 import { createExtensionBlueBubblesVitestConfig } from "./vitest/vitest.extension-bluebubbles.config.ts";
 import { createExtensionChannelsVitestConfig } from "./vitest/vitest.extension-channels.config.ts";
 import { createExtensionDiffsVitestConfig } from "./vitest/vitest.extension-diffs.config.ts";
+import { createExtensionDiscordVitestConfig } from "./vitest/vitest.extension-discord.config.ts";
 import { createExtensionFeishuVitestConfig } from "./vitest/vitest.extension-feishu.config.ts";
+import { createExtensionImessageVitestConfig } from "./vitest/vitest.extension-imessage.config.ts";
 import { createExtensionIrcVitestConfig } from "./vitest/vitest.extension-irc.config.ts";
+import { createExtensionLineVitestConfig } from "./vitest/vitest.extension-line.config.ts";
 import { createExtensionMatrixVitestConfig } from "./vitest/vitest.extension-matrix.config.ts";
 import { createExtensionMattermostVitestConfig } from "./vitest/vitest.extension-mattermost.config.ts";
 import { createExtensionMemoryVitestConfig } from "./vitest/vitest.extension-memory.config.ts";
 import { createExtensionMessagingVitestConfig } from "./vitest/vitest.extension-messaging.config.ts";
 import { createExtensionMsTeamsVitestConfig } from "./vitest/vitest.extension-msteams.config.ts";
+import { createExtensionProviderOpenAiVitestConfig } from "./vitest/vitest.extension-provider-openai.config.ts";
 import { createExtensionProvidersVitestConfig } from "./vitest/vitest.extension-providers.config.ts";
+import { createExtensionSignalVitestConfig } from "./vitest/vitest.extension-signal.config.ts";
+import { createExtensionSlackVitestConfig } from "./vitest/vitest.extension-slack.config.ts";
 import { createExtensionTelegramVitestConfig } from "./vitest/vitest.extension-telegram.config.ts";
 import { createExtensionVoiceCallVitestConfig } from "./vitest/vitest.extension-voice-call.config.ts";
 import { createExtensionWhatsAppVitestConfig } from "./vitest/vitest.extension-whatsapp.config.ts";
@@ -183,14 +189,20 @@ describe("scoped vitest configs", () => {
   const defaultExtensionBlueBubblesConfig = createExtensionBlueBubblesVitestConfig({});
   const defaultExtensionChannelsConfig = createExtensionChannelsVitestConfig({});
   const defaultExtensionDiffsConfig = createExtensionDiffsVitestConfig({});
+  const defaultExtensionDiscordConfig = createExtensionDiscordVitestConfig({});
   const defaultExtensionFeishuConfig = createExtensionFeishuVitestConfig({});
+  const defaultExtensionImessageConfig = createExtensionImessageVitestConfig({});
   const defaultExtensionIrcConfig = createExtensionIrcVitestConfig({});
+  const defaultExtensionLineConfig = createExtensionLineVitestConfig({});
   const defaultExtensionMatrixConfig = createExtensionMatrixVitestConfig({});
   const defaultExtensionMattermostConfig = createExtensionMattermostVitestConfig({});
   const defaultExtensionMemoryConfig = createExtensionMemoryVitestConfig({});
   const defaultExtensionMsTeamsConfig = createExtensionMsTeamsVitestConfig({});
   const defaultExtensionMessagingConfig = createExtensionMessagingVitestConfig({});
+  const defaultExtensionProviderOpenAiConfig = createExtensionProviderOpenAiVitestConfig({});
   const defaultExtensionProvidersConfig = createExtensionProvidersVitestConfig({});
+  const defaultExtensionSignalConfig = createExtensionSignalVitestConfig({});
+  const defaultExtensionSlackConfig = createExtensionSlackVitestConfig({});
   const defaultExtensionTelegramConfig = createExtensionTelegramVitestConfig({});
   const defaultExtensionVoiceCallConfig = createExtensionVoiceCallVitestConfig({});
   const defaultExtensionWhatsAppConfig = createExtensionWhatsAppVitestConfig({});
@@ -230,7 +242,13 @@ describe("scoped vitest configs", () => {
       defaultAcpConfig,
       defaultExtensionsConfig,
       defaultExtensionChannelsConfig,
+      defaultExtensionDiscordConfig,
+      defaultExtensionImessageConfig,
+      defaultExtensionLineConfig,
+      defaultExtensionProviderOpenAiConfig,
       defaultExtensionProvidersConfig,
+      defaultExtensionSignalConfig,
+      defaultExtensionSlackConfig,
       defaultInfraConfig,
       defaultAutoReplyConfig,
       defaultAutoReplyCoreConfig,
@@ -337,17 +355,17 @@ describe("scoped vitest configs", () => {
     );
   });
 
-  it("normalizes extension channel include patterns relative to the scoped dir", () => {
-    expect(defaultExtensionChannelsConfig.test?.dir).toBe(path.join(process.cwd(), "extensions"));
-    expect(defaultExtensionChannelsConfig.test?.include).toEqual(
-      expect.arrayContaining([
-        "discord/**/*.test.ts",
-        "line/**/*.test.ts",
-        "slack/**/*.test.ts",
-        "signal/**/*.test.ts",
-        "imessage/**/*.test.ts",
-      ]),
-    );
+  it("normalizes split extension channel include patterns relative to the scoped dir", () => {
+    for (const [config, include] of [
+      [defaultExtensionDiscordConfig, "discord/**/*.test.ts"],
+      [defaultExtensionLineConfig, "line/**/*.test.ts"],
+      [defaultExtensionSlackConfig, "slack/**/*.test.ts"],
+      [defaultExtensionSignalConfig, "signal/**/*.test.ts"],
+      [defaultExtensionImessageConfig, "imessage/**/*.test.ts"],
+    ] as const) {
+      expect(config.test?.dir).toBe(path.join(process.cwd(), "extensions"));
+      expect(config.test?.include).toEqual([include]);
+    }
   });
 
   it("normalizes bluebubbles extension include patterns relative to the scoped dir", () => {
@@ -385,8 +403,13 @@ describe("scoped vitest configs", () => {
   it("normalizes extension provider include patterns relative to the scoped dir", () => {
     expect(defaultExtensionProvidersConfig.test?.dir).toBe(path.join(process.cwd(), "extensions"));
     expect(defaultExtensionProvidersConfig.test?.include).toEqual(
-      expect.arrayContaining(["openai/**/*.test.ts", "xai/**/*.test.ts", "google/**/*.test.ts"]),
+      expect.arrayContaining(["xai/**/*.test.ts", "google/**/*.test.ts"]),
     );
+    expect(defaultExtensionProvidersConfig.test?.include).not.toContain("openai/**/*.test.ts");
+    expect(defaultExtensionProviderOpenAiConfig.test?.dir).toBe(
+      path.join(process.cwd(), "extensions"),
+    );
+    expect(defaultExtensionProviderOpenAiConfig.test?.include).toEqual(["openai/**/*.test.ts"]);
   });
 
   it("normalizes extension messaging include patterns relative to the scoped dir", () => {
diff --git a/test/vitest/vitest.channel-paths.mjs b/test/vitest/vitest.channel-paths.mjs
index b3336d14808..48912561873 100644
--- a/test/vitest/vitest.channel-paths.mjs
+++ b/test/vitest/vitest.channel-paths.mjs
@@ -1,8 +1,6 @@
 import path from "node:path";
-import {
-  BUNDLED_PLUGIN_PATH_PREFIX,
-  bundledPluginRoot,
-} from "../../scripts/lib/bundled-plugin-paths.mjs";
+import { BUNDLED_PLUGIN_PATH_PREFIX } from "../../scripts/lib/bundled-plugin-paths.mjs";
+import { splitChannelExtensionTestRoots } from "./vitest.extension-channel-split-paths.mjs";
 
 const normalizeRepoPath = (value) => value.split(path.sep).join("/");
 
@@ -10,17 +8,13 @@ export const extensionRoutedChannelTestFiles = [];
 
 const extensionRoutedChannelTestFileSet = new Set(extensionRoutedChannelTestFiles);
 
-export const channelTestRoots = [
-  "src/channels",
-  bundledPluginRoot("discord"),
-  bundledPluginRoot("slack"),
-  bundledPluginRoot("signal"),
-  bundledPluginRoot("imessage"),
-  bundledPluginRoot("line"),
-];
+export const channelTestRoots = ["src/channels", ...splitChannelExtensionTestRoots];
 
-export const extensionChannelTestRoots = channelTestRoots.filter((root) =>
-  root.startsWith(BUNDLED_PLUGIN_PATH_PREFIX),
+const splitChannelExtensionTestRootSet = new Set(splitChannelExtensionTestRoots);
+
+export const extensionChannelTestRoots = channelTestRoots.filter(
+  (root) =>
+    root.startsWith(BUNDLED_PLUGIN_PATH_PREFIX) && !splitChannelExtensionTestRootSet.has(root),
 );
 export const coreChannelTestRoots = channelTestRoots.filter(
   (root) => !root.startsWith(BUNDLED_PLUGIN_PATH_PREFIX),
diff --git a/test/vitest/vitest.config.ts b/test/vitest/vitest.config.ts
index f3ec799ded9..3cc33fdd1b2 100644
--- a/test/vitest/vitest.config.ts
+++ b/test/vitest/vitest.config.ts
@@ -48,16 +48,21 @@ export const rootVitestProjects = [
   "test/vitest/vitest.channels.config.ts",
   "test/vitest/vitest.extension-acpx.config.ts",
   "test/vitest/vitest.extension-bluebubbles.config.ts",
-  "test/vitest/vitest.extension-channels.config.ts",
   "test/vitest/vitest.extension-diffs.config.ts",
+  "test/vitest/vitest.extension-discord.config.ts",
   "test/vitest/vitest.extension-feishu.config.ts",
+  "test/vitest/vitest.extension-imessage.config.ts",
   "test/vitest/vitest.extension-irc.config.ts",
+  "test/vitest/vitest.extension-line.config.ts",
   "test/vitest/vitest.extension-mattermost.config.ts",
   "test/vitest/vitest.extension-matrix.config.ts",
   "test/vitest/vitest.extension-memory.config.ts",
   "test/vitest/vitest.extension-msteams.config.ts",
   "test/vitest/vitest.extension-messaging.config.ts",
+  "test/vitest/vitest.extension-provider-openai.config.ts",
   "test/vitest/vitest.extension-providers.config.ts",
+  "test/vitest/vitest.extension-signal.config.ts",
+  "test/vitest/vitest.extension-slack.config.ts",
   "test/vitest/vitest.extension-telegram.config.ts",
   "test/vitest/vitest.extension-voice-call.config.ts",
   "test/vitest/vitest.extension-whatsapp.config.ts",
diff --git a/test/vitest/vitest.extension-channel-single-config.ts b/test/vitest/vitest.extension-channel-single-config.ts
new file mode 100644
index 00000000000..0c4963a2668
--- /dev/null
+++ b/test/vitest/vitest.extension-channel-single-config.ts
@@ -0,0 +1,14 @@
+import { createScopedVitestConfig } from "./vitest.scoped-config.ts";
+
+export function createSingleChannelExtensionVitestConfig(
+  extensionId: string,
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createScopedVitestConfig([`${extensionId}/**/*.test.ts`], {
+    dir: "extensions",
+    env,
+    name: `extension-${extensionId}`,
+    passWithNoTests: true,
+    setupFiles: ["test/setup.extensions.ts"],
+  });
+}
diff --git a/test/vitest/vitest.extension-channel-split-paths.mjs b/test/vitest/vitest.extension-channel-split-paths.mjs
new file mode 100644
index 00000000000..205927eeb99
--- /dev/null
+++ b/test/vitest/vitest.extension-channel-split-paths.mjs
@@ -0,0 +1,44 @@
+import { bundledPluginRoot } from "../../scripts/lib/bundled-plugin-paths.mjs";
+
+export const splitChannelExtensionShardSpecs = [
+  {
+    id: "discord",
+    kind: "extensionDiscord",
+    config: "test/vitest/vitest.extension-discord.config.ts",
+  },
+  {
+    id: "slack",
+    kind: "extensionSlack",
+    config: "test/vitest/vitest.extension-slack.config.ts",
+  },
+  {
+    id: "signal",
+    kind: "extensionSignal",
+    config: "test/vitest/vitest.extension-signal.config.ts",
+  },
+  {
+    id: "imessage",
+    kind: "extensionImessage",
+    config: "test/vitest/vitest.extension-imessage.config.ts",
+  },
+  {
+    id: "line",
+    kind: "extensionLine",
+    config: "test/vitest/vitest.extension-line.config.ts",
+  },
+];
+
+export const splitChannelExtensionTestRoots = splitChannelExtensionShardSpecs.map((spec) =>
+  bundledPluginRoot(spec.id),
+);
+
+export function resolveSplitChannelExtensionShard(root) {
+  const normalizedRoot = root.replaceAll("\\", "/");
+  return splitChannelExtensionShardSpecs.find(
+    (spec) => bundledPluginRoot(spec.id) === normalizedRoot,
+  );
+}
+
+export function isSplitChannelExtensionRoot(root) {
+  return Boolean(resolveSplitChannelExtensionShard(root));
+}
diff --git a/test/vitest/vitest.extension-discord.config.ts b/test/vitest/vitest.extension-discord.config.ts
new file mode 100644
index 00000000000..645d5bc3bc6
--- /dev/null
+++ b/test/vitest/vitest.extension-discord.config.ts
@@ -0,0 +1,9 @@
+import { createSingleChannelExtensionVitestConfig } from "./vitest.extension-channel-single-config.ts";
+
+export function createExtensionDiscordVitestConfig(
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createSingleChannelExtensionVitestConfig("discord", env);
+}
+
+export default createExtensionDiscordVitestConfig();
diff --git a/test/vitest/vitest.extension-imessage.config.ts b/test/vitest/vitest.extension-imessage.config.ts
new file mode 100644
index 00000000000..f5caccfd9f0
--- /dev/null
+++ b/test/vitest/vitest.extension-imessage.config.ts
@@ -0,0 +1,9 @@
+import { createSingleChannelExtensionVitestConfig } from "./vitest.extension-channel-single-config.ts";
+
+export function createExtensionImessageVitestConfig(
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createSingleChannelExtensionVitestConfig("imessage", env);
+}
+
+export default createExtensionImessageVitestConfig();
diff --git a/test/vitest/vitest.extension-line.config.ts b/test/vitest/vitest.extension-line.config.ts
new file mode 100644
index 00000000000..b09bf41c11e
--- /dev/null
+++ b/test/vitest/vitest.extension-line.config.ts
@@ -0,0 +1,9 @@
+import { createSingleChannelExtensionVitestConfig } from "./vitest.extension-channel-single-config.ts";
+
+export function createExtensionLineVitestConfig(
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createSingleChannelExtensionVitestConfig("line", env);
+}
+
+export default createExtensionLineVitestConfig();
diff --git a/test/vitest/vitest.extension-provider-openai.config.ts b/test/vitest/vitest.extension-provider-openai.config.ts
new file mode 100644
index 00000000000..635ee045a04
--- /dev/null
+++ b/test/vitest/vitest.extension-provider-openai.config.ts
@@ -0,0 +1,27 @@
+import { providerOpenAiExtensionTestRoots } from "./vitest.extension-provider-paths.mjs";
+import { loadPatternListFromEnv } from "./vitest.pattern-file.ts";
+import { createScopedVitestConfig } from "./vitest.scoped-config.ts";
+
+export function loadIncludePatternsFromEnv(
+  env: Record<string, string | undefined> = process.env,
+): string[] | null {
+  return loadPatternListFromEnv("OPENCLAW_VITEST_INCLUDE_FILE", env);
+}
+
+export function createExtensionProviderOpenAiVitestConfig(
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createScopedVitestConfig(
+    loadIncludePatternsFromEnv(env) ??
+      providerOpenAiExtensionTestRoots.map((root) => `${root}/**/*.test.ts`),
+    {
+      dir: "extensions",
+      env,
+      name: "extension-provider-openai",
+      passWithNoTests: true,
+      setupFiles: ["test/setup.extensions.ts"],
+    },
+  );
+}
+
+export default createExtensionProviderOpenAiVitestConfig();
diff --git a/test/vitest/vitest.extension-provider-paths.mjs b/test/vitest/vitest.extension-provider-paths.mjs
index 2e60e311ad2..b06cccb8767 100644
--- a/test/vitest/vitest.extension-provider-paths.mjs
+++ b/test/vitest/vitest.extension-provider-paths.mjs
@@ -14,6 +14,7 @@ export const providerExtensionIds = [
   "groq",
   "huggingface",
   "kimi-coding",
+  "lmstudio",
   "microsoft",
   "microsoft-foundry",
   "minimax",
@@ -22,7 +23,6 @@ export const providerExtensionIds = [
   "moonshot",
   "nvidia",
   "ollama",
-  "openai",
   "openrouter",
   "qianfan",
   "stepfun",
@@ -33,8 +33,17 @@ export const providerExtensionIds = [
   "zai",
 ];
 
+export const providerOpenAiExtensionIds = ["openai"];
+
 export const providerExtensionTestRoots = providerExtensionIds.map((id) => bundledPluginRoot(id));
+export const providerOpenAiExtensionTestRoots = providerOpenAiExtensionIds.map((id) =>
+  bundledPluginRoot(id),
+);
 
 export function isProviderExtensionRoot(root) {
   return providerExtensionTestRoots.includes(root);
 }
+
+export function isProviderOpenAiExtensionRoot(root) {
+  return providerOpenAiExtensionTestRoots.includes(root);
+}
diff --git a/test/vitest/vitest.extension-signal.config.ts b/test/vitest/vitest.extension-signal.config.ts
new file mode 100644
index 00000000000..68231494e11
--- /dev/null
+++ b/test/vitest/vitest.extension-signal.config.ts
@@ -0,0 +1,9 @@
+import { createSingleChannelExtensionVitestConfig } from "./vitest.extension-channel-single-config.ts";
+
+export function createExtensionSignalVitestConfig(
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createSingleChannelExtensionVitestConfig("signal", env);
+}
+
+export default createExtensionSignalVitestConfig();
diff --git a/test/vitest/vitest.extension-slack.config.ts b/test/vitest/vitest.extension-slack.config.ts
new file mode 100644
index 00000000000..3245a859eb6
--- /dev/null
+++ b/test/vitest/vitest.extension-slack.config.ts
@@ -0,0 +1,9 @@
+import { createSingleChannelExtensionVitestConfig } from "./vitest.extension-channel-single-config.ts";
+
+export function createExtensionSlackVitestConfig(
+  env: Record<string, string | undefined> = process.env,
+) {
+  return createSingleChannelExtensionVitestConfig("slack", env);
+}
+
+export default createExtensionSlackVitestConfig();
diff --git a/test/vitest/vitest.extensions.config.ts b/test/vitest/vitest.extensions.config.ts
index 876cb5b37ed..e65efab1b54 100644
--- a/test/vitest/vitest.extensions.config.ts
+++ b/test/vitest/vitest.extensions.config.ts
@@ -10,7 +10,10 @@ import { mattermostExtensionTestRoots } from "./vitest.extension-mattermost-path
 import { memoryExtensionTestRoots } from "./vitest.extension-memory-paths.mjs";
 import { messagingExtensionTestRoots } from "./vitest.extension-messaging-paths.mjs";
 import { msTeamsExtensionTestRoots } from "./vitest.extension-msteams-paths.mjs";
-import { providerExtensionTestRoots } from "./vitest.extension-provider-paths.mjs";
+import {
+  providerExtensionTestRoots,
+  providerOpenAiExtensionTestRoots,
+} from "./vitest.extension-provider-paths.mjs";
 import { telegramExtensionTestRoots } from "./vitest.extension-telegram-paths.mjs";
 import { voiceCallExtensionTestRoots } from "./vitest.extension-voice-call-paths.mjs";
 import { whatsAppExtensionTestRoots } from "./vitest.extension-whatsapp-paths.mjs";
@@ -47,6 +50,7 @@ export function createExtensionsVitestConfig(
       ...memoryExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
       ...messagingExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
       ...msTeamsExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
+      ...providerOpenAiExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
       ...providerExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
       ...telegramExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
       ...voiceCallExtensionTestRoots.map((root) => `${root.replace(/^extensions\//u, "")}/**`),
diff --git a/test/vitest/vitest.scoped-config.ts b/test/vitest/vitest.scoped-config.ts
index 8575196b27d..342a4d096cc 100644
--- a/test/vitest/vitest.scoped-config.ts
+++ b/test/vitest/vitest.scoped-config.ts
@@ -61,14 +61,20 @@ const SCOPED_PROJECT_GROUP_ORDER_BY_NAME = new Map(
     "extension-bluebubbles",
     "extension-channels",
     "extension-diffs",
+    "extension-discord",
     "extension-feishu",
+    "extension-imessage",
     "extension-irc",
+    "extension-line",
     "extension-mattermost",
     "extension-matrix",
     "extension-memory",
     "extension-messaging",
     "extension-msteams",
+    "extension-provider-openai",
     "extension-providers",
+    "extension-signal",
+    "extension-slack",
     "extension-telegram",
     "extension-voice-call",
     "extension-whatsapp",
diff --git a/test/vitest/vitest.shared.config.ts b/test/vitest/vitest.shared.config.ts
index 398e022d5b5..86d3a050ee7 100644
--- a/test/vitest/vitest.shared.config.ts
+++ b/test/vitest/vitest.shared.config.ts
@@ -142,13 +142,18 @@ export const sharedVitestConfig = {
       "test/vitest/vitest.extension-acpx.config.ts",
       "test/vitest/vitest.extension-bluebubbles-paths.mjs",
       "test/vitest/vitest.extension-bluebubbles.config.ts",
+      "test/vitest/vitest.extension-channel-single-config.ts",
+      "test/vitest/vitest.extension-channel-split-paths.mjs",
       "test/vitest/vitest.extension-channels.config.ts",
       "test/vitest/vitest.extension-diffs-paths.mjs",
       "test/vitest/vitest.extension-diffs.config.ts",
+      "test/vitest/vitest.extension-discord.config.ts",
       "test/vitest/vitest.extension-feishu-paths.mjs",
       "test/vitest/vitest.extension-feishu.config.ts",
+      "test/vitest/vitest.extension-imessage.config.ts",
       "test/vitest/vitest.extension-irc-paths.mjs",
       "test/vitest/vitest.extension-irc.config.ts",
+      "test/vitest/vitest.extension-line.config.ts",
       "test/vitest/vitest.extension-mattermost-paths.mjs",
       "test/vitest/vitest.extension-mattermost.config.ts",
       "test/vitest/vitest.extension-matrix-paths.mjs",
@@ -195,7 +200,10 @@ export const sharedVitestConfig = {
       "test/vitest/vitest.extension-zalo-paths.mjs",
       "test/vitest/vitest.extension-zalo.config.ts",
       "test/vitest/vitest.extension-provider-paths.mjs",
+      "test/vitest/vitest.extension-provider-openai.config.ts",
       "test/vitest/vitest.extension-providers.config.ts",
+      "test/vitest/vitest.extension-signal.config.ts",
+      "test/vitest/vitest.extension-slack.config.ts",
       "test/vitest/vitest.logging.config.ts",
       "test/vitest/vitest.process.config.ts",
       "test/vitest/vitest.tasks.config.ts",
diff --git a/test/vitest/vitest.test-shards.mjs b/test/vitest/vitest.test-shards.mjs
index 87c3ff7a489..260e3e55907 100644
--- a/test/vitest/vitest.test-shards.mjs
+++ b/test/vitest/vitest.test-shards.mjs
@@ -103,16 +103,21 @@ export const fullSuiteVitestShards = [
     projects: [
       "test/vitest/vitest.extension-acpx.config.ts",
       "test/vitest/vitest.extension-bluebubbles.config.ts",
-      "test/vitest/vitest.extension-channels.config.ts",
       "test/vitest/vitest.extension-diffs.config.ts",
+      "test/vitest/vitest.extension-discord.config.ts",
       "test/vitest/vitest.extension-feishu.config.ts",
+      "test/vitest/vitest.extension-imessage.config.ts",
       "test/vitest/vitest.extension-irc.config.ts",
+      "test/vitest/vitest.extension-line.config.ts",
       "test/vitest/vitest.extension-mattermost.config.ts",
       "test/vitest/vitest.extension-matrix.config.ts",
       "test/vitest/vitest.extension-memory.config.ts",
       "test/vitest/vitest.extension-messaging.config.ts",
       "test/vitest/vitest.extension-msteams.config.ts",
+      "test/vitest/vitest.extension-provider-openai.config.ts",
       "test/vitest/vitest.extension-providers.config.ts",
+      "test/vitest/vitest.extension-signal.config.ts",
+      "test/vitest/vitest.extension-slack.config.ts",
       "test/vitest/vitest.extension-telegram.config.ts",
       "test/vitest/vitest.extension-voice-call.config.ts",
       "test/vitest/vitest.extension-whatsapp.config.ts",