feat: GitHub stars badge on open-source projects via shields.io

- New openSource field in project model distinguishes OS from private
- shields.io badge shows live star count for open-source projects
- SoundInbox marked as NOT open source (no badge, no stars)
- Immich Photo Manager, Cmux Resurrect, Gotify Commander, CDC Starter Kit → open source
- Stars badge hidden in print view

data/cv-en.json

@@ -546,6 +546,7 @@
       "projectDesc": "AI-Powered Photo Library MCP Server",
       "url": "https://drolosoft.com/immich-photo-manager.html?lang=en",
       "gitRepoUrl": "https://github.com/drolosoft/immich-photo-manager",
+      "openSource": true,
       "projectLogo": "immich-photo-manager.png",
       "location": "Online",
       "startDate": "2026",
@@ -573,6 +574,7 @@
       "projectDesc": "Terminal Session Persistence Tool",
       "url": "https://drolosoft.com/cmux-resurrect.html?lang=en",
       "gitRepoUrl": "https://github.com/drolosoft/cmux-resurrect",
+      "openSource": true,
       "projectLogo": "cmux-resurrect.png",
       "location": "Online",
       "startDate": "2026",
@@ -600,6 +602,7 @@
       "projectDesc": "Bidirectional Server Control Plugin",
       "url": "https://github.com/drolosoft/gotify-commander",
       "gitRepoUrl": "https://github.com/drolosoft/gotify-commander",
+      "openSource": true,
       "projectLogo": "gotify-commander.png",
       "location": "Online",
       "startDate": "2026",
@@ -726,6 +729,7 @@
       "projectDesc": "SAP Customer Data Cloud Demo",
       "url": "https://gigyademo.com/cdc-starter-kit/",
       "gitRepoUrl": "https://github.com/gigya/cdc-starter-kit",
+      "openSource": true,
       "projectLogo": "sap.png",
       "logoIndex": 8,
       "location": "Online",