refactor: dedupe extension lower readers

extensions/nextcloud-talk/src/accounts.ts

@@ -11,7 +11,7 @@ import { normalizeResolvedSecretInputString } from "./secret-input.js";
 import type { CoreConfig, NextcloudTalkAccountConfig } from "./types.js";
 
 function isTruthyEnvValue(value?: string): boolean {
-  const normalized = (value ?? "").trim().toLowerCase();
+  const normalized = normalizeOptionalString(value)?.toLowerCase() ?? "";
   return normalized === "true" || normalized === "1" || normalized === "yes" || normalized === "on";
 }
 

extensions/phone-control/index.ts

@@ -1,5 +1,6 @@
 import fs from "node:fs/promises";
 import path from "node:path";
+import { normalizeOptionalString } from "openclaw/plugin-sdk/text-runtime";
 import {
   definePluginEntry,
   type OpenClawPluginApi,
@@ -259,7 +260,7 @@ function formatHelp(): string {
 }
 
 function parseGroup(raw: string | undefined): ArmGroup | null {
-  const value = (raw ?? "").trim().toLowerCase();
+  const value = normalizeOptionalString(raw)?.toLowerCase() ?? "";
   if (!value) {
     return null;
   }

extensions/speech-core/src/tts.ts

@@ -327,7 +327,9 @@ export function resolveTtsConfig(cfg: OpenClawConfig): ResolvedTtsConfig {
     mode: raw.mode ?? "final",
     provider:
       normalizeConfiguredSpeechProviderId(raw.provider) ??
-      (providerSource === "config" ? raw.provider?.trim().toLowerCase() || "" : ""),
+      (providerSource === "config"
+        ? (normalizeOptionalString(raw.provider)?.toLowerCase() ?? "")
+        : ""),
     providerSource,
     summaryModel: normalizeOptionalString(raw.summaryModel),
     modelOverrides: resolveModelOverridePolicy(raw.modelOverrides),

extensions/talk-voice/index.ts

@@ -1,6 +1,7 @@
 import { resolveActiveTalkProviderConfig } from "openclaw/plugin-sdk/config-runtime";
 import { formatErrorMessage } from "openclaw/plugin-sdk/error-runtime";
 import type { SpeechVoiceOption } from "openclaw/plugin-sdk/speech";
+import { normalizeOptionalString } from "openclaw/plugin-sdk/text-runtime";
 import { definePluginEntry, type OpenClawPluginApi } from "./api.js";
 
 function mask(s: string, keep: number = 6): string {
@@ -79,11 +80,15 @@ function findVoice(voices: SpeechVoiceOption[], query: string): SpeechVoiceOptio
   if (byId) {
     return byId;
   }
-  const exactName = voices.find((v) => (v.name ?? "").trim().toLowerCase() === lower);
+  const exactName = voices.find(
+    (v) => (normalizeOptionalString(v.name)?.toLowerCase() ?? "") === lower,
+  );
   if (exactName) {
     return exactName;
   }
-  const partial = voices.find((v) => (v.name ?? "").trim().toLowerCase().includes(lower));
+  const partial = voices.find((v) =>
+    (normalizeOptionalString(v.name)?.toLowerCase() ?? "").includes(lower),
+  );
   return partial ?? null;
 }
 

src/agents/tools/image-tool.helpers.ts

@@ -1,5 +1,6 @@
 import type { AssistantMessage } from "@mariozechner/pi-ai";
 import type { OpenClawConfig } from "../../config/config.js";
+import { normalizeLowercaseStringOrEmpty } from "../../shared/string-coerce.js";
 import { findNormalizedProviderValue } from "../model-selection.js";
 import { extractAssistantText } from "../pi-embedded-utils.js";
 import { coerceToolModelConfig, type ToolModelConfig } from "./model-config.helpers.js";
@@ -16,7 +17,7 @@ export function decodeDataUrl(dataUrl: string): {
   if (!match) {
     throw new Error("Invalid data URL (expected base64 data: URL).");
   }
-  const mimeType = (match[1] ?? "").trim().toLowerCase();
+  const mimeType = normalizeLowercaseStringOrEmpty(match[1]);
   if (!mimeType.startsWith("image/")) {
     throw new Error(`Unsupported data URL type: ${mimeType || "unknown"}`);
   }