refactor: 完善项目详情与侧边栏组件国际化实现

将 ProjectDetail 和 ProjectSidebar 组件中的硬编码文本替换为国际化翻译键，提升中英文支持一致性。

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

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

src/messages/en.json

@@ -29,7 +29,25 @@
     "submitYourProject": "Submit Your Project",
     "submitProjectTitle": "Submit Your Project",
     "submitProjectDescription": "Have an AI tool worth sharing? Add it to Agent Park.",
-    "submitNow": "SUBMIT NOW"
+    "submitNow": "SUBMIT NOW",
+    "projectLinks": "Project Links",
+    "officialWebsite": "Official Website",
+    "githubRepo": "GitHub Repo",
+    "license": "License",
+    "pricing": "Pricing",
+    "status": "Status",
+    "type": "Type",
+    "openSource": "Open Source",
+    "projectPreview": "Project Preview",
+    "gettingStarted": "Getting Started",
+    "installInstructions": "To install this project, clone the repository and install dependencies:",
+    "buildYourOwnAgent": "Build Your Own Agent?",
+    "buildAgentDesc": "Start using our API to build custom agents in minutes.",
+    "getStartedNow": "Get Started Now",
+    "onThisPage": "On this page",
+    "overview": "Overview",
+    "keyFeatures": "Key Features",
+    "useCases": "Use Cases"
   },
   "navigation": {
     "home": "Home",