chore: configure Claude Code with Go development hooks

Author: trakhimenok

.claude/settings.json

@@ -0,0 +1,21 @@
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Write|Edit",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "jq -r '.tool_input.file_path' | { read -r f; case \"$f\" in *.go) gofmt -w \"$f\";; esac; } 2>/dev/null || true",
+            "statusMessage": "Running gofmt..."
+          },
+          {
+            "type": "command",
+            "command": "jq -r '.tool_input.file_path' | { read -r f; case \"$f\" in *.go) output=$(golangci-lint run \"$f\" 2>&1); rc=$?; if [ $rc -ne 0 ]; then jq -n --arg ctx \"golangci-lint found issues in $f. Fix them:\\n$output\" '{\"hookSpecificOutput\":{\"hookEventName\":\"PostToolUse\",\"additionalContext\":$ctx}}'; exit $rc; fi;; esac; }",
+            "statusMessage": "Running golangci-lint..."
+          }
+        ]
+      }
+    ]
+  }
+}