diff --git a/docs/plugins/sdk-subpaths.md b/docs/plugins/sdk-subpaths.md
index 818776fc01e..51d86db060d 100644
--- a/docs/plugins/sdk-subpaths.md
+++ b/docs/plugins/sdk-subpaths.md
@@ -67,7 +67,8 @@ For the plugin authoring guide, see [Plugin SDK overview](/plugins/sdk-overview)
     | `plugin-sdk/interactive-runtime` | Semantic message presentation, delivery, and legacy interactive reply helpers. See [Message Presentation](/plugins/message-presentation) |
     | `plugin-sdk/channel-inbound` | Compatibility barrel for inbound debounce, mention matching, mention-policy helpers, and envelope helpers |
     | `plugin-sdk/channel-inbound-debounce` | Narrow inbound debounce helpers |
-    | `plugin-sdk/channel-mention-gating` | Narrow mention-policy helpers without the broader inbound runtime surface |
+    | `plugin-sdk/channel-mention-gating` | Narrow mention-policy and mention text helpers without the broader inbound runtime surface |
+    | `plugin-sdk/channel-envelope` | Narrow inbound envelope formatting helpers |
     | `plugin-sdk/channel-location` | Channel location context and formatting helpers |
     | `plugin-sdk/channel-logging` | Channel logging helpers for inbound drops and typing/ack failures |
     | `plugin-sdk/channel-send-result` | Reply result types |
@@ -105,6 +106,7 @@ For the plugin authoring guide, see [Plugin SDK overview](/plugins/sdk-overview)
     | `plugin-sdk/provider-transport-runtime` | Native provider transport helpers such as guarded fetch, transport message transforms, and writable transport event streams |
     | `plugin-sdk/provider-onboard` | Onboarding config patch helpers |
     | `plugin-sdk/global-singleton` | Process-local singleton/map/cache helpers |
+    | `plugin-sdk/group-activation` | Narrow group activation mode and command parsing helpers |
   </Accordion>
 
   <Accordion title="Auth and security subpaths">
@@ -120,6 +122,7 @@ For the plugin authoring guide, see [Plugin SDK overview](/plugins/sdk-overview)
     | `plugin-sdk/approval-handler-runtime` | Broader approval handler runtime helpers; prefer the narrower adapter/gateway seams when they are enough |
     | `plugin-sdk/approval-native-runtime` | Native approval target + account-binding helpers |
     | `plugin-sdk/approval-reply-runtime` | Exec/plugin approval reply payload helpers |
+    | `plugin-sdk/reply-dedupe` | Narrow inbound reply dedupe reset helpers |
     | `plugin-sdk/channel-contract-testing` | Narrow channel contract test helpers without the broad testing barrel |
     | `plugin-sdk/command-auth-native` | Native command auth + native session-target helpers |
     | `plugin-sdk/command-detection` | Shared command detection helpers |
@@ -172,7 +175,7 @@ For the plugin authoring guide, see [Plugin SDK overview](/plugins/sdk-overview)
     | `plugin-sdk/tool-send` | Extract canonical send target fields from tool args |
     | `plugin-sdk/temp-path` | Shared temp-download path helpers |
     | `plugin-sdk/logging-core` | Subsystem logger and redaction helpers |
-    | `plugin-sdk/markdown-table-runtime` | Markdown table mode helpers |
+    | `plugin-sdk/markdown-table-runtime` | Markdown table mode and conversion helpers |
     | `plugin-sdk/json-store` | Small JSON state read/write helpers |
     | `plugin-sdk/file-lock` | Re-entrant file-lock helpers |
     | `plugin-sdk/persistent-dedupe` | Disk-backed dedupe cache helpers |
@@ -210,6 +213,7 @@ For the plugin authoring guide, see [Plugin SDK overview](/plugins/sdk-overview)
     | Subpath | Key exports |
     | --- | --- |
     | `plugin-sdk/media-runtime` | Shared media fetch/transform/store helpers plus media payload builders |
+    | `plugin-sdk/media-store` | Narrow media store helpers such as `saveMediaBuffer` |
     | `plugin-sdk/media-generation-runtime` | Shared media-generation failover helpers, candidate selection, and missing-model messaging |
     | `plugin-sdk/media-understanding` | Media understanding provider types plus provider-facing image/audio helper exports |
     | `plugin-sdk/text-runtime` | Shared text/markdown/logging helpers such as assistant-visible-text stripping, markdown render/chunking/table helpers, redaction helpers, directive-tag helpers, and safe-text utilities |
diff --git a/extensions/whatsapp/src/auto-reply.test-harness.ts b/extensions/whatsapp/src/auto-reply.test-harness.ts
index b1aa4ad83f5..3dd8b9c646a 100644
--- a/extensions/whatsapp/src/auto-reply.test-harness.ts
+++ b/extensions/whatsapp/src/auto-reply.test-harness.ts
@@ -2,7 +2,7 @@ import "./test-helpers.js";
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-import { resetInboundDedupe } from "openclaw/plugin-sdk/reply-runtime";
+import { resetInboundDedupe } from "openclaw/plugin-sdk/reply-dedupe";
 import { resetLogger, setLoggerOverride } from "openclaw/plugin-sdk/runtime-env";
 import { mockPinnedHostnameResolution } from "openclaw/plugin-sdk/testing";
 import { afterAll, afterEach, beforeAll, beforeEach, vi, type Mock } from "vitest";
diff --git a/extensions/whatsapp/src/auto-reply/mentions.ts b/extensions/whatsapp/src/auto-reply/mentions.ts
index b9967a77961..864643f18ac 100644
--- a/extensions/whatsapp/src/auto-reply/mentions.ts
+++ b/extensions/whatsapp/src/auto-reply/mentions.ts
@@ -1,4 +1,7 @@
-import { buildMentionRegexes, normalizeMentionText } from "openclaw/plugin-sdk/channel-inbound";
+import {
+  buildMentionRegexes,
+  normalizeMentionText,
+} from "openclaw/plugin-sdk/channel-mention-gating";
 import type { loadConfig } from "openclaw/plugin-sdk/config-runtime";
 import {
   getComparableIdentityValues,
diff --git a/extensions/whatsapp/src/auto-reply/monitor/group-activation.runtime.ts b/extensions/whatsapp/src/auto-reply/monitor/group-activation.runtime.ts
index 326105287a8..fc739e666ed 100644
--- a/extensions/whatsapp/src/auto-reply/monitor/group-activation.runtime.ts
+++ b/extensions/whatsapp/src/auto-reply/monitor/group-activation.runtime.ts
@@ -1 +1 @@
-export { normalizeGroupActivation } from "openclaw/plugin-sdk/reply-runtime";
+export { normalizeGroupActivation } from "openclaw/plugin-sdk/group-activation";
diff --git a/extensions/whatsapp/src/auto-reply/monitor/group-gating.runtime.ts b/extensions/whatsapp/src/auto-reply/monitor/group-gating.runtime.ts
index c0da26fd7ad..07497919942 100644
--- a/extensions/whatsapp/src/auto-reply/monitor/group-gating.runtime.ts
+++ b/extensions/whatsapp/src/auto-reply/monitor/group-gating.runtime.ts
@@ -1,8 +1,8 @@
 export {
   implicitMentionKindWhen,
   resolveInboundMentionDecision,
-} from "openclaw/plugin-sdk/channel-inbound";
+} from "openclaw/plugin-sdk/channel-mention-gating";
 export { hasControlCommand } from "openclaw/plugin-sdk/command-detection";
 export { recordPendingHistoryEntryIfEnabled } from "openclaw/plugin-sdk/reply-history";
-export { parseActivationCommand } from "openclaw/plugin-sdk/reply-runtime";
+export { parseActivationCommand } from "openclaw/plugin-sdk/group-activation";
 export { normalizeE164 } from "../../text-runtime.js";
diff --git a/extensions/whatsapp/src/auto-reply/monitor/message-line.runtime.ts b/extensions/whatsapp/src/auto-reply/monitor/message-line.runtime.ts
index 4ef7c15c834..5d468eedbad 100644
--- a/extensions/whatsapp/src/auto-reply/monitor/message-line.runtime.ts
+++ b/extensions/whatsapp/src/auto-reply/monitor/message-line.runtime.ts
@@ -2,4 +2,4 @@ export { resolveMessagePrefix } from "openclaw/plugin-sdk/agent-runtime";
 export {
   formatInboundEnvelope,
   type EnvelopeFormatOptions,
-} from "openclaw/plugin-sdk/channel-inbound";
+} from "openclaw/plugin-sdk/channel-envelope";
diff --git a/extensions/whatsapp/src/auto-reply/monitor/runtime-api.ts b/extensions/whatsapp/src/auto-reply/monitor/runtime-api.ts
index dbc78cf9c83..d73498d205f 100644
--- a/extensions/whatsapp/src/auto-reply/monitor/runtime-api.ts
+++ b/extensions/whatsapp/src/auto-reply/monitor/runtime-api.ts
@@ -1,9 +1,10 @@
 export { resolveIdentityNamePrefix } from "openclaw/plugin-sdk/agent-runtime";
 export {
   formatInboundEnvelope,
-  resolveInboundSessionEnvelopeContext,
-  toLocationContext,
-} from "openclaw/plugin-sdk/channel-inbound";
+  resolveEnvelopeFormatOptions,
+} from "openclaw/plugin-sdk/channel-envelope";
+export { resolveInboundSessionEnvelopeContext } from "openclaw/plugin-sdk/channel-inbound";
+export { toLocationContext } from "openclaw/plugin-sdk/channel-location";
 export { createChannelReplyPipeline } from "openclaw/plugin-sdk/channel-reply-pipeline";
 export { shouldComputeCommandAuthorized } from "openclaw/plugin-sdk/command-detection";
 export {
diff --git a/extensions/whatsapp/src/inbound.media.test.ts b/extensions/whatsapp/src/inbound.media.test.ts
index 1407fe7e564..c7f4a72281e 100644
--- a/extensions/whatsapp/src/inbound.media.test.ts
+++ b/extensions/whatsapp/src/inbound.media.test.ts
@@ -60,9 +60,9 @@ vi.mock("../../../src/pairing/pairing-store.js", () => {
   };
 });
 
-vi.mock("openclaw/plugin-sdk/media-runtime", async () => {
-  const actual = await vi.importActual<typeof import("openclaw/plugin-sdk/media-runtime")>(
-    "openclaw/plugin-sdk/media-runtime",
+vi.mock("openclaw/plugin-sdk/media-store", async () => {
+  const actual = await vi.importActual<typeof import("openclaw/plugin-sdk/media-store")>(
+    "openclaw/plugin-sdk/media-store",
   );
   return {
     ...actual,
diff --git a/extensions/whatsapp/src/inbound/save-media.runtime.ts b/extensions/whatsapp/src/inbound/save-media.runtime.ts
index 3c82f2be877..cace8a847a2 100644
--- a/extensions/whatsapp/src/inbound/save-media.runtime.ts
+++ b/extensions/whatsapp/src/inbound/save-media.runtime.ts
@@ -1 +1 @@
-export { saveMediaBuffer } from "openclaw/plugin-sdk/media-runtime";
+export { saveMediaBuffer } from "openclaw/plugin-sdk/media-store";
diff --git a/extensions/whatsapp/src/inbound/types.ts b/extensions/whatsapp/src/inbound/types.ts
index 45cebb371c1..0890dc65231 100644
--- a/extensions/whatsapp/src/inbound/types.ts
+++ b/extensions/whatsapp/src/inbound/types.ts
@@ -1,6 +1,6 @@
 import type { AnyMessageContent, MiscMessageGenerationOptions } from "@whiskeysockets/baileys";
 import type { NormalizedLocation } from "openclaw/plugin-sdk/channel-inbound";
-import type { PollInput } from "openclaw/plugin-sdk/media-runtime";
+import type { PollInput } from "openclaw/plugin-sdk/poll-runtime";
 import type { WhatsAppIdentity, WhatsAppReplyContext, WhatsAppSelfIdentity } from "../identity.js";
 
 export type WebListenerCloseReason = {
diff --git a/extensions/whatsapp/src/media.test.ts b/extensions/whatsapp/src/media.test.ts
index b7f89c288aa..0e301f7f2b3 100644
--- a/extensions/whatsapp/src/media.test.ts
+++ b/extensions/whatsapp/src/media.test.ts
@@ -1,11 +1,11 @@
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-import { optimizeImageToPng } from "openclaw/plugin-sdk/media-runtime";
 import { resolveStateDir } from "openclaw/plugin-sdk/state-paths";
 import { resolvePreferredOpenClawTmpDir } from "openclaw/plugin-sdk/temp-path";
 import { captureEnv } from "openclaw/plugin-sdk/testing";
 import { mockPinnedHostnameResolution } from "openclaw/plugin-sdk/testing";
+import { optimizeImageToPng } from "openclaw/plugin-sdk/web-media";
 import sharp from "sharp";
 import { afterAll, afterEach, beforeAll, describe, expect, it, vi } from "vitest";
 import { sendVoiceMessageDiscord } from "../../discord/src/send.js";
diff --git a/extensions/whatsapp/src/outbound-adapter.ts b/extensions/whatsapp/src/outbound-adapter.ts
index 7d0993936e9..df56baf527b 100644
--- a/extensions/whatsapp/src/outbound-adapter.ts
+++ b/extensions/whatsapp/src/outbound-adapter.ts
@@ -1,5 +1,5 @@
 import { type ChannelOutboundAdapter } from "openclaw/plugin-sdk/channel-send-result";
-import { chunkText } from "openclaw/plugin-sdk/reply-runtime";
+import { chunkText } from "openclaw/plugin-sdk/reply-chunking";
 import { shouldLogVerbose } from "openclaw/plugin-sdk/runtime-env";
 import { createWhatsAppOutboundBase } from "./outbound-base.js";
 import { resolveWhatsAppOutboundTarget } from "./resolve-outbound-target.js";
diff --git a/extensions/whatsapp/src/outbound-base.ts b/extensions/whatsapp/src/outbound-base.ts
index 74742dfce92..5bcb0f3986c 100644
--- a/extensions/whatsapp/src/outbound-base.ts
+++ b/extensions/whatsapp/src/outbound-base.ts
@@ -9,7 +9,7 @@ import {
   type ChannelOutboundAdapter,
 } from "openclaw/plugin-sdk/channel-send-result";
 import type { OpenClawConfig } from "openclaw/plugin-sdk/config-runtime";
-import { resolveOutboundSendDep, sanitizeForPlainText } from "openclaw/plugin-sdk/infra-runtime";
+import { resolveOutboundSendDep, sanitizeForPlainText } from "openclaw/plugin-sdk/outbound-runtime";
 import { sendTextMediaPayload } from "openclaw/plugin-sdk/reply-payload";
 import {
   normalizeWhatsAppOutboundPayload,
diff --git a/extensions/whatsapp/src/send.ts b/extensions/whatsapp/src/send.ts
index 12da0318adc..1cb5100621a 100644
--- a/extensions/whatsapp/src/send.ts
+++ b/extensions/whatsapp/src/send.ts
@@ -1,12 +1,13 @@
 import { formatCliCommand } from "openclaw/plugin-sdk/cli-runtime";
 import { requireRuntimeConfig, type OpenClawConfig } from "openclaw/plugin-sdk/config-runtime";
-import { resolveMarkdownTableMode } from "openclaw/plugin-sdk/config-runtime";
 import { generateSecureUuid } from "openclaw/plugin-sdk/core";
-import { normalizePollInput, type PollInput } from "openclaw/plugin-sdk/media-runtime";
-import { createSubsystemLogger } from "openclaw/plugin-sdk/runtime-env";
-import { getChildLogger } from "openclaw/plugin-sdk/text-runtime";
-import { redactIdentifier } from "openclaw/plugin-sdk/text-runtime";
-import { convertMarkdownTables } from "openclaw/plugin-sdk/text-runtime";
+import { redactIdentifier } from "openclaw/plugin-sdk/logging-core";
+import {
+  convertMarkdownTables,
+  resolveMarkdownTableMode,
+} from "openclaw/plugin-sdk/markdown-table-runtime";
+import { normalizePollInput, type PollInput } from "openclaw/plugin-sdk/poll-runtime";
+import { createSubsystemLogger, getChildLogger } from "openclaw/plugin-sdk/runtime-env";
 import {
   resolveDefaultWhatsAppAccountId,
   resolveWhatsAppAccount,
diff --git a/package.json b/package.json
index 06596d5f2d6..b9ee57cc4ba 100644
--- a/package.json
+++ b/package.json
@@ -185,6 +185,10 @@
       "types": "./dist/plugin-sdk/reply-runtime.d.ts",
       "default": "./dist/plugin-sdk/reply-runtime.js"
     },
+    "./plugin-sdk/reply-dedupe": {
+      "types": "./dist/plugin-sdk/reply-dedupe.d.ts",
+      "default": "./dist/plugin-sdk/reply-dedupe.js"
+    },
     "./plugin-sdk/reply-dispatch-runtime": {
       "types": "./dist/plugin-sdk/reply-dispatch-runtime.d.ts",
       "default": "./dist/plugin-sdk/reply-dispatch-runtime.js"
@@ -265,6 +269,10 @@
       "types": "./dist/plugin-sdk/media-runtime.d.ts",
       "default": "./dist/plugin-sdk/media-runtime.js"
     },
+    "./plugin-sdk/media-store": {
+      "types": "./dist/plugin-sdk/media-store.d.ts",
+      "default": "./dist/plugin-sdk/media-store.js"
+    },
     "./plugin-sdk/media-mime": {
       "types": "./dist/plugin-sdk/media-mime.d.ts",
       "default": "./dist/plugin-sdk/media-mime.js"
@@ -629,6 +637,10 @@
       "types": "./dist/plugin-sdk/channel-contract.d.ts",
       "default": "./dist/plugin-sdk/channel-contract.js"
     },
+    "./plugin-sdk/channel-envelope": {
+      "types": "./dist/plugin-sdk/channel-envelope.d.ts",
+      "default": "./dist/plugin-sdk/channel-envelope.js"
+    },
     "./plugin-sdk/channel-feedback": {
       "types": "./dist/plugin-sdk/channel-feedback.d.ts",
       "default": "./dist/plugin-sdk/channel-feedback.js"
@@ -733,6 +745,10 @@
       "types": "./dist/plugin-sdk/string-coerce-runtime.d.ts",
       "default": "./dist/plugin-sdk/string-coerce-runtime.js"
     },
+    "./plugin-sdk/group-activation": {
+      "types": "./dist/plugin-sdk/group-activation.d.ts",
+      "default": "./dist/plugin-sdk/group-activation.js"
+    },
     "./plugin-sdk/group-access": {
       "types": "./dist/plugin-sdk/group-access.d.ts",
       "default": "./dist/plugin-sdk/group-access.js"
diff --git a/scripts/lib/plugin-sdk-entrypoints.json b/scripts/lib/plugin-sdk-entrypoints.json
index 9d48b1d07df..0485b3ee376 100644
--- a/scripts/lib/plugin-sdk-entrypoints.json
+++ b/scripts/lib/plugin-sdk-entrypoints.json
@@ -32,6 +32,7 @@
   "config-runtime",
   "config-schema",
   "reply-runtime",
+  "reply-dedupe",
   "reply-dispatch-runtime",
   "reply-reference",
   "reply-chunking",
@@ -52,6 +53,7 @@
   "ssrf-policy",
   "ssrf-runtime",
   "media-runtime",
+  "media-store",
   "media-mime",
   "media-generation-runtime",
   "conversation-binding-runtime",
@@ -143,6 +145,7 @@
   "channel-core",
   "channel-entry-contract",
   "channel-contract",
+  "channel-envelope",
   "channel-feedback",
   "channel-inbound",
   "channel-inbound-debounce",
@@ -169,6 +172,7 @@
   "session-store-runtime",
   "ssrf-dispatcher",
   "string-coerce-runtime",
+  "group-activation",
   "group-access",
   "global-singleton",
   "directory-config-runtime",
diff --git a/src/plugin-sdk/channel-envelope.ts b/src/plugin-sdk/channel-envelope.ts
new file mode 100644
index 00000000000..1cdc71d563f
--- /dev/null
+++ b/src/plugin-sdk/channel-envelope.ts
@@ -0,0 +1,7 @@
+// Narrow inbound envelope helpers for hot channel message-formatting paths.
+
+export {
+  formatInboundEnvelope,
+  resolveEnvelopeFormatOptions,
+  type EnvelopeFormatOptions,
+} from "../auto-reply/envelope.js";
diff --git a/src/plugin-sdk/channel-mention-gating.ts b/src/plugin-sdk/channel-mention-gating.ts
index 077854be96e..dff01d0d421 100644
--- a/src/plugin-sdk/channel-mention-gating.ts
+++ b/src/plugin-sdk/channel-mention-gating.ts
@@ -19,3 +19,4 @@ export {
   // @deprecated Prefer `resolveInboundMentionDecision({ facts, policy })`.
   resolveMentionGatingWithBypass,
 } from "../channels/mention-gating.js";
+export { buildMentionRegexes, normalizeMentionText } from "../auto-reply/reply/mentions.js";
diff --git a/src/plugin-sdk/group-activation.ts b/src/plugin-sdk/group-activation.ts
new file mode 100644
index 00000000000..876b10cc7a5
--- /dev/null
+++ b/src/plugin-sdk/group-activation.ts
@@ -0,0 +1,7 @@
+// Narrow group activation helpers for channel mention-gating paths.
+
+export {
+  normalizeGroupActivation,
+  parseActivationCommand,
+  type GroupActivationMode,
+} from "../auto-reply/group-activation.js";
diff --git a/src/plugin-sdk/markdown-table-runtime.ts b/src/plugin-sdk/markdown-table-runtime.ts
index 62e2848512f..0efe2807915 100644
--- a/src/plugin-sdk/markdown-table-runtime.ts
+++ b/src/plugin-sdk/markdown-table-runtime.ts
@@ -1,2 +1,3 @@
 export { resolveMarkdownTableMode } from "../config/markdown-tables.js";
+export { convertMarkdownTables } from "../markdown/tables.js";
 export type { MarkdownTableMode } from "../config/types.base.js";
diff --git a/src/plugin-sdk/media-store.ts b/src/plugin-sdk/media-store.ts
new file mode 100644
index 00000000000..4814d9ca5d8
--- /dev/null
+++ b/src/plugin-sdk/media-store.ts
@@ -0,0 +1,3 @@
+// Narrow media store helpers for channel runtimes that do not need the full media runtime.
+
+export { saveMediaBuffer } from "../media/store.js";
diff --git a/src/plugin-sdk/reply-dedupe.ts b/src/plugin-sdk/reply-dedupe.ts
new file mode 100644
index 00000000000..134872008b4
--- /dev/null
+++ b/src/plugin-sdk/reply-dedupe.ts
@@ -0,0 +1,3 @@
+// Narrow reply dedupe helpers for tests and channel runtimes that do not need the full reply runtime.
+
+export { resetInboundDedupe } from "../auto-reply/reply/inbound-dedupe.js";