feat: add multiple package sync sources and API integration

- Added undici dependency and implemented three package fetcher variants (simple text parsing, v2 with better error handling, and official repository sync)
- Integrated real API calls in PlatformSelector and PackageBrowser components with fallback to mock data
- Extended sync API route to support multiple data sources (debian-simple, ubuntu-simple, debian-official-v2, etc.) with platform initialization

pnpm-lock.yaml

@@ -56,6 +56,9 @@ importers:
       tailwindcss-animate:
         specifier: ^1.0.7
         version: 1.0.7([email protected])
+      undici:
+        specifier: ^6.6.2
+        version: 6.22.0
       zustand:
         specifier: ^4.4.7
         version: 4.5.7(@types/[email protected])([email protected])
@@ -2258,6 +2261,10 @@ packages:
   [email protected]:
     resolution: {integrity: sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==}
 
+  [email protected]:
+    resolution: {integrity: sha512-hU/10obOIu62MGYjdskASR3CUAiYaFTtC9Pa6vHyf//mAipSvSQg6od2CnJswq7fvzNS3zJhxoRkgNVaHurWKw==}
+    engines: {node: '>=18.17'}
+
   [email protected]:
     resolution: {integrity: sha512-B60uB5TNBLtN6/LsgAf3udH9saB5p7gqJwcFfbOEZ8BcBHnGwCf6G/TGiEqkRAxX7zAFIUtzdrXQSdL3Q/wqNA==}
 
@@ -4713,6 +4720,8 @@ snapshots:
 
   [email protected]: {}
 
+  [email protected]: {}
+
   [email protected]:
     dependencies:
       '@babel/runtime': 7.28.4