refactor: dedupe normalization lowercase helpers

extensions/comfy/workflow-runtime.ts

@@ -226,7 +226,7 @@ function resolveComfyNetworkPolicy(params: {
     return {};
   }
 
-  const hostname = normalizeOptionalString(parsed.hostname)?.toLowerCase() ?? "";
+  const hostname = normalizeOptionalLowercaseString(parsed.hostname) ?? "";
   if (!hostname || !params.allowPrivateNetwork || !isPrivateOrLoopbackHost(hostname)) {
     return {};
   }

extensions/discord/src/monitor/allow-list.ts

@@ -7,6 +7,7 @@ import {
   type ChannelMatchSource,
 } from "openclaw/plugin-sdk/channel-targets";
 import { evaluateGroupRouteAccessForPolicy } from "openclaw/plugin-sdk/group-access";
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import { formatDiscordUserTag } from "./format.js";
 
 export type DiscordAllowList = {
@@ -84,9 +85,7 @@ export function normalizeDiscordAllowList(raw: string[] | undefined, prefixes: s
 }
 
 export function normalizeDiscordSlug(value: string) {
-  return value
-    .trim()
-    .toLowerCase()
+  return normalizeLowercaseStringOrEmpty(value)
     .replace(/^#/, "")
     .replace(/[^a-z0-9]+/g, "-")
     .replace(/^-+|-+$/g, "");

extensions/discord/src/send.guild.ts

@@ -7,6 +7,7 @@ import type {
   RESTPostAPIGuildScheduledEventJSONBody,
 } from "discord-api-types/v10";
 import { Routes } from "discord-api-types/v10";
+import { normalizeOptionalLowercaseString } from "openclaw/plugin-sdk/text-runtime";
 import { loadWebMediaRaw } from "openclaw/plugin-sdk/web-media";
 import { resolveDiscordRest } from "./send.shared.js";
 import type {
@@ -89,7 +90,7 @@ export async function resolveEventCoverImage(
   const media = await loadWebMediaRaw(imageUrl, DISCORD_MAX_EVENT_COVER_BYTES, {
     localRoots: opts?.localRoots,
   });
-  const contentType = media.contentType?.toLowerCase();
+  const contentType = normalizeOptionalLowercaseString(media.contentType);
   if (!contentType || !ALLOWED_EVENT_COVER_TYPES.has(contentType)) {
     throw new Error(
       `Discord event cover images must be PNG, JPG, or GIF (got ${contentType ?? "unknown"})`,

extensions/memory-lancedb/index.ts

@@ -11,6 +11,7 @@ import type * as LanceDB from "@lancedb/lancedb";
 import { Type } from "@sinclair/typebox";
 import OpenAI from "openai";
 import { ensureGlobalUndiciEnvProxyDispatcher } from "openclaw/plugin-sdk/runtime-env";
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import { definePluginEntry, type OpenClawPluginApi } from "./api.js";
 import {
   DEFAULT_CAPTURE_MAX_CHARS,
@@ -259,7 +260,7 @@ export function shouldCapture(text: string, options?: { maxChars?: number }): bo
 }
 
 export function detectCategory(text: string): MemoryCategory {
-  const lower = text.toLowerCase();
+  const lower = normalizeLowercaseStringOrEmpty(text);
   if (/prefer|radši|like|love|hate|want/i.test(lower)) {
     return "preference";
   }

extensions/msteams/src/directory.ts

@@ -4,6 +4,7 @@ import {
   listDirectoryEntriesFromSources,
 } from "openclaw/plugin-sdk/directory-runtime";
 import { createLazyRuntimeNamedExport } from "openclaw/plugin-sdk/lazy-runtime";
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
 import type { ChannelPlugin } from "./channel-api.js";
 import { normalizeMSTeamsMessagingTarget } from "./resolve-allowlist.js";
 import { resolveMSTeamsCredentials } from "./token.js";
@@ -33,7 +34,7 @@ export const msteamsDirectoryAdapter: NonNullable<ChannelPlugin["directory"]> =
         limit,
         normalizeId: (raw) => {
           const normalized = normalizeMSTeamsMessagingTarget(raw) ?? raw;
-          const lowered = normalized.toLowerCase();
+          const lowered = normalizeLowercaseStringOrEmpty(normalized);
           if (lowered.startsWith("user:") || lowered.startsWith("conversation:")) {
             return normalized;
           }

extensions/qa-lab/src/discovery-eval.ts

@@ -1,3 +1,5 @@
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
+
 const REQUIRED_DISCOVERY_REFS = [
   "repo/qa/seed-scenarios.json",
   "repo/qa/QA_KICKOFF_TASK.md",
@@ -5,6 +7,8 @@ const REQUIRED_DISCOVERY_REFS = [
   "repo/docs/help/testing.md",
 ] as const;
 
+const REQUIRED_DISCOVERY_REFS_LOWER = REQUIRED_DISCOVERY_REFS.map(normalizeLowercaseStringOrEmpty);
+
 const DISCOVERY_SCOPE_LEAK_PHRASES = [
   "all mandatory scenarios",
   "final qa tally",
@@ -15,8 +19,8 @@ const DISCOVERY_SCOPE_LEAK_PHRASES = [
 ] as const;
 
 function confirmsDiscoveryFileRead(text: string) {
-  const lower = text.toLowerCase();
-  const mentionsAllRefs = REQUIRED_DISCOVERY_REFS.every((ref) => lower.includes(ref.toLowerCase()));
+  const lower = normalizeLowercaseStringOrEmpty(text);
+  const mentionsAllRefs = REQUIRED_DISCOVERY_REFS_LOWER.every((ref) => lower.includes(ref));
   const confirmsRead =
     /(?:read|retrieved|inspected|loaded|accessed|digested)\s+all\s+(?:four|4)\s+(?:(?:requested|required|mandated|seeded)\s+)?files/.test(
       lower,
@@ -29,7 +33,7 @@ function confirmsDiscoveryFileRead(text: string) {
 }
 
 export function hasDiscoveryLabels(text: string) {
-  const lower = text.toLowerCase();
+  const lower = normalizeLowercaseStringOrEmpty(text);
   return (
     lower.includes("worked") &&
     lower.includes("failed") &&
@@ -39,7 +43,7 @@ export function hasDiscoveryLabels(text: string) {
 }
 
 export function reportsMissingDiscoveryFiles(text: string) {
-  const lower = text.toLowerCase();
+  const lower = normalizeLowercaseStringOrEmpty(text);
   if (confirmsDiscoveryFileRead(text)) {
     return false;
   }
@@ -52,6 +56,6 @@ export function reportsMissingDiscoveryFiles(text: string) {
 }
 
 export function reportsDiscoveryScopeLeak(text: string) {
-  const lower = text.toLowerCase();
+  const lower = normalizeLowercaseStringOrEmpty(text);
   return DISCOVERY_SCOPE_LEAK_PHRASES.some((phrase) => lower.includes(phrase));
 }

extensions/qa-lab/src/model-switch-eval.ts

@@ -1,5 +1,7 @@
+import { normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
+
 export function hasModelSwitchContinuityEvidence(text: string) {
-  const lower = text.toLowerCase();
+  const lower = normalizeLowercaseStringOrEmpty(text);
   const mentionsHandoff =
     lower.includes("handoff") || lower.includes("model switch") || lower.includes("switched");
   const mentionsKickoffTask =

extensions/qa-lab/src/suite.ts

@@ -2372,7 +2372,7 @@ When the user asks for the hot install marker exactly, reply with exactly: HOT-I
                       (candidate) =>
                         candidate.direction === "outbound" &&
                         candidate.conversation.id === "qa-operator" &&
-                        candidate.text.toLowerCase().includes("lighthouse"),
+                        normalizeLowercaseStringOrEmpty(candidate.text).includes("lighthouse"),
                     )
                     .at(-1),
                 liveTurnTimeoutMs(env, 45_000),

src/cron/service/ops.ts

@@ -236,7 +236,9 @@ export async function listPage(state: CronServiceState, opts?: CronListPageOptio
       if (!query) {
         return true;
       }
-      const haystack = [job.name, job.description ?? "", job.agentId ?? ""].join(" ").toLowerCase();
+      const haystack = normalizeLowercaseStringOrEmpty(
+        [job.name, job.description ?? "", job.agentId ?? ""].join(" "),
+      );
       return haystack.includes(query);
     });
     const sorted = sortJobs(filtered, sortBy, sortDir);

src/daemon/service.ts

@@ -1,3 +1,4 @@
+import { normalizeLowercaseStringOrEmpty } from "../shared/string-coerce.js";
 import {
   installLaunchAgent,
   isLaunchAgentLoaded,
@@ -154,7 +155,7 @@ export function describeGatewayServiceRestart(
     return {
       scheduled: true,
       daemonActionResult: "scheduled",
-      message: `restart scheduled, ${serviceNoun.toLowerCase()} will restart momentarily`,
+      message: `restart scheduled, ${normalizeLowercaseStringOrEmpty(serviceNoun)} will restart momentarily`,
       progressMessage: `${serviceNoun} service restart scheduled.`,
     };
   }

src/hooks/llm-slug-generator.ts

@@ -16,6 +16,7 @@ import { parseModelRef } from "../agents/model-selection.js";
 import { runEmbeddedPiAgent } from "../agents/pi-embedded.js";
 import type { OpenClawConfig } from "../config/config.js";
 import { createSubsystemLogger } from "../logging/subsystem.js";
+import { normalizeLowercaseStringOrEmpty } from "../shared/string-coerce.js";
 
 const log = createSubsystemLogger("llm-slug-generator");
 
@@ -70,9 +71,7 @@ Reply with ONLY the slug, nothing else. Examples: "vendor-pitch", "api-design",
       const text = result.payloads[0]?.text;
       if (text) {
         // Clean up the response - extract just the slug
-        const slug = text
-          .trim()
-          .toLowerCase()
+        const slug = normalizeLowercaseStringOrEmpty(text)
           .replace(/[^a-z0-9-]/g, "-")
           .replace(/-+/g, "-")
           .replace(/^-|-$/g, "")