feat(nvim): add local Claude settings for Astronvim

.claude/settings.local.json

@@ -0,0 +1,16 @@
+{
+  "permissions": {
+    "allow": [
+      "mcp__context7__resolve-library-id",
+      "WebSearch",
+      "WebFetch(domain:docs.astronvim.com)"
+    ]
+  },
+  "enabledMcpjsonServers": [
+    "cclsp",
+    "context7",
+    "github",
+    "exa",
+    "chrome"
+  ]
+}