feat: clearer, disambiguated tool names across all surfaces (#520)

Renames 18 ambiguous or hard-to-search tool names so image tools self-qualify like the other modalities ("Compress" becomes "Compress Image"), and cleans up a few awkward names. Propagated across search (constants.ts), display (en.ts + 20 locales), the OpenAPI base spec + 20 locale specs, and the docs tool-page headings in 21 languages. Removes the duplicate "Normalize Audio" summary shared by the video and audio endpoints. Tool ids and routes are unchanged, so no API paths or bookmarks break.

apps/docs/zh-CN/tools/image/rotate.md

@@ -1,11 +1,11 @@
 ---
 description: "按任意角度旋转图片，并进行水平或垂直翻转。"
-i18n_source_hash: af2581d7cd8d
+i18n_source_hash: c4ed5f7e270b
 i18n_provenance: human
 i18n_output_hash: dcbaa2a45cbf
 ---
 
-# 旋转与翻转 {#rotate-flip}
+# 旋转和翻转图片 {#rotate-flip}
 
 按任意角度旋转图片，和/或对其进行水平或垂直翻转。旋转和翻转操作可以在单次请求中组合使用。