chore: initial backup of Claude Code configuration

Includes: CLAUDE.md, settings.json, agents, commands, rules, skills,
hooks, contexts, evals, get-shit-done, plugin configs (installed list
and marketplace sources). Excludes credentials, runtime caches,
telemetry, session data, and plugin binary cache.

plugins/known_marketplaces.json

@@ -0,0 +1,42 @@
+{
+  "claude-plugins-official": {
+    "source": {
+      "source": "github",
+      "repo": "anthropics/claude-plugins-official"
+    },
+    "installLocation": "C:\\Users\\yaoji\\.claude\\plugins\\marketplaces\\claude-plugins-official",
+    "lastUpdated": "2026-03-24T21:19:12.541Z"
+  },
+  "dotnet-skills": {
+    "source": {
+      "source": "github",
+      "repo": "Aaronontheweb/dotnet-skills"
+    },
+    "installLocation": "C:\\Users\\yaoji\\.claude\\plugins\\marketplaces\\dotnet-skills",
+    "lastUpdated": "2026-02-04T22:35:06.123Z"
+  },
+  "planning-with-files": {
+    "source": {
+      "source": "github",
+      "repo": "OthmanAdi/planning-with-files"
+    },
+    "installLocation": "C:\\Users\\yaoji\\.claude\\plugins\\marketplaces\\planning-with-files",
+    "lastUpdated": "2026-02-06T20:01:06.305Z"
+  },
+  "everything-claude-code": {
+    "source": {
+      "source": "github",
+      "repo": "affaan-m/everything-claude-code"
+    },
+    "installLocation": "C:\\Users\\yaoji\\.claude\\plugins\\marketplaces\\everything-claude-code",
+    "lastUpdated": "2026-03-21T21:16:13.392Z"
+  },
+  "obsidian-skills": {
+    "source": {
+      "source": "github",
+      "repo": "kepano/obsidian-skills"
+    },
+    "installLocation": "C:\\Users\\yaoji\\.claude\\plugins\\marketplaces\\obsidian-skills",
+    "lastUpdated": "2026-03-15T15:22:50.729Z"
+  }
+}