refactor: simplify i18n structure for breadcrumb translations

- Remove redundant comparison.breadcrumb translation keys
- Add "comparison" key to common.navigation section to reduce duplication
- Consolidate breadcrumb translations to use standardized navigation terms
- Apply changes across all supported languages (en, de, zh-Hans)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ericyangpan

messages/de.json

@@ -6,7 +6,8 @@
     "extensions": "Erweiterungen",
     "models": "Modelle",
     "modelProviders": "Modellanbieter",
-    "vendors": "Anbieter"
+    "vendors": "Anbieter",
+    "comparison": "Vergleich"
   },
   "community": {
     "github": "GitHub",
@@ -346,14 +347,6 @@
     }
   },
   "comparison": {
-    "breadcrumb": {
-      "aiCodingStack": "AI Coding Stack",
-      "comparison": "Vergleich",
-      "ides": "IDEs",
-      "clis": "CLIs",
-      "extensions": "Erweiterungen",
-      "models": "Modelle"
-    },
     "ides": {
       "title": "IDE-Vergleich",
       "subtitle": "Vergleichen Sie Funktionen, Preise und Spezifikationen von KI-gestützten IDEs nebeneinander.",

messages/en.json

@@ -6,7 +6,8 @@
     "extensions": "Extensions",
     "models": "Models",
     "modelProviders": "Model Providers",
-    "vendors": "Vendors"
+    "vendors": "Vendors",
+    "comparison": "Comparison"
   },
   "community": {
     "github": "GitHub",
@@ -350,14 +351,6 @@
   },
 
   "comparison": {
-    "breadcrumb": {
-      "aiCodingStack": "AI Coding Stack",
-      "comparison": "Comparison",
-      "ides": "IDEs",
-      "clis": "CLIs",
-      "extensions": "Extensions",
-      "models": "Models"
-    },
     "ides": {
       "title": "IDE Comparison",
       "subtitle": "Compare features, pricing, and specifications of AI-powered IDEs side by side.",

messages/zh-Hans.json

@@ -6,7 +6,8 @@
     "extensions": "扩展插件",
     "models": "模型",
     "modelProviders": "模型提供商",
-    "vendors": "厂商"
+    "vendors": "厂商",
+    "comparison": "对比"
   },
   "community": {
     "github": "GitHub",
@@ -346,14 +347,6 @@
     }
   },
   "comparison": {
-    "breadcrumb": {
-      "aiCodingStack": "AI 编码技术栈",
-      "comparison": "对比",
-      "ides": "IDE",
-      "clis": "命令行",
-      "extensions": "扩展插件",
-      "models": "模型"
-    },
     "ides": {
       "title": "IDE 对比",
       "subtitle": "并排对比 AI 增强 IDE 的功能、定价和规格。",