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/tools/image/blur-faces.md

@@ -2,7 +2,7 @@
 description: Auto-detect and blur faces in images with AI face detection for privacy and GDPR-compliant anonymization.
 ---
 
-# Face / PII Blur {#face-pii-blur}
+# Blur Faces & PII {#face-pii-blur}
 
 Auto-detect and blur faces in images using AI-powered face detection (MediaPipe).
 

apps/docs/tools/image/collage.md

@@ -2,7 +2,7 @@
 description: Combine multiple images into grid collages with 25+ templates, adjustable gaps and corners, and per-cell pan and zoom.
 ---
 
-# Collage / Grid {#collage-grid}
+# Collage & Grid {#collage-grid}
 
 Combine multiple images into beautiful grid collages with 25+ templates. Supports 2-9 image layouts with customizable gap, corner radius, background color, and per-cell pan/zoom controls.
 

apps/docs/tools/image/compress.md

@@ -2,7 +2,7 @@
 description: Reduce image file size by quality level or to a target file size.
 ---
 
-# Compress {#compress}
+# Compress Image {#compress}
 
 Reduce image file size by specifying a quality level or a target file size in kilobytes. The tool uses iterative binary search to hit size targets accurately.
 

apps/docs/tools/image/convert.md

@@ -2,7 +2,7 @@
 description: Convert images between formats including modern formats like AVIF, JXL, and HEIC.
 ---
 
-# Convert {#convert}
+# Convert Image {#convert}
 
 Convert images between formats. Supports common web formats as well as specialized formats like HEIC, JXL, BMP, ICO, JP2, QOI, and PSD.
 

apps/docs/tools/image/crop.md

@@ -2,7 +2,7 @@
 description: Crop images by specifying a region with position and dimensions.
 ---
 
-# Crop {#crop}
+# Crop Image {#crop}
 
 Crop images by defining a rectangular region using position and size. Supports both pixel and percentage units.
 

apps/docs/tools/image/edit-metadata.md

@@ -2,7 +2,7 @@
 description: Edit EXIF, IPTC, GPS, and XMP metadata fields in images without re-encoding pixels.
 ---
 
-# Edit Metadata {#edit-metadata}
+# Edit Image Metadata {#edit-metadata}
 
 Edit image metadata fields including EXIF, IPTC, GPS coordinates, dates, and keywords. Uses ExifTool under the hood, so metadata is written in-place without re-encoding pixels, preserving full image quality.
 

apps/docs/tools/image/resize.md

@@ -2,7 +2,7 @@
 description: Resize images by pixels, percentage, or with fit modes.
 ---
 
-# Resize {#resize}
+# Resize Image {#resize}
 
 Resize images by specifying exact pixel dimensions, a percentage scale factor, or a fit mode that controls how the image adapts to the target dimensions.
 

apps/docs/tools/image/rotate.md

@@ -2,7 +2,7 @@
 description: Rotate images by any angle and flip horizontally or vertically.
 ---
 
-# Rotate & Flip {#rotate-flip}
+# Rotate & Flip Image {#rotate-flip}
 
 Rotate images by an arbitrary angle and/or flip them horizontally or vertically. Rotation and flip operations can be combined in a single request.
 

apps/docs/tools/image/sharpening.md

@@ -2,7 +2,7 @@
 description: Sharpen images using adaptive, unsharp mask, or high-pass methods with optional noise reduction.
 ---
 
-# Sharpening {#sharpening}
+# Sharpen Image {#sharpening}
 
 Advanced sharpening tool with three methods: adaptive (smart edge-aware), unsharp mask (classic radius/amount), and high-pass (texture emphasis). Includes built-in noise reduction to prevent sharpening artifacts.
 

apps/docs/tools/image/split.md

@@ -2,7 +2,7 @@
 description: Split one image into grid tiles by rows and columns or by pixel size, returned as a ZIP archive.
 ---
 
-# Image Splitting {#image-splitting}
+# Split Image {#image-splitting}
 
 Split a single image into grid tiles by column/row count or by specific pixel dimensions. Returns a ZIP archive containing all tiles.
 

apps/docs/tools/image/stitch.md

@@ -2,7 +2,7 @@
 description: Join images side by side, stacked, or in a grid with control over alignment, gaps, borders, and resize mode.
 ---
 
-# Stitch / Combine {#stitch-combine}
+# Stitch Images {#stitch-combine}
 
 Join multiple images side by side, stacked vertically, or arranged in a grid. Supports alignment, gap, border, corner radius, and multiple resize modes.
 

apps/docs/tools/image/strip-metadata.md

@@ -2,7 +2,7 @@
 description: Remove EXIF, GPS, ICC, and XMP metadata from images for privacy and smaller file sizes.
 ---
 
-# Remove Metadata {#remove-metadata}
+# Remove Image Metadata {#remove-metadata}
 
 Remove EXIF, GPS, ICC color profiles, and XMP metadata from images. Useful for privacy (removing GPS coordinates, camera info) and reducing file size.