Format and lint codebase for consistency and quality

- Run go fmt on all Go code (server.go formatting cleanup)
- Fix shellcheck issues in build-deb.sh script:
  - Replace indirect exit code checks ($?) with direct command checks
  - Use 'if ! command' instead of 'if [ $? -ne 0 ]'
  - Use 'if command' instead of 'if [ $? -eq 0 ]'
- All quality checks now pass:
  - go fmt: ✅ Code properly formatted
  - go vet: ✅ No issues found
  - shellcheck: ✅ All shell scripts validated
  - go test: ✅ No test failures (no tests yet)

Follows project guidelines for shell script validation and code quality.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

internal/server/server.go

@@ -149,7 +149,7 @@ func (s *Server) Start() error {
 		// IPv6 address needs brackets
 		addr = fmt.Sprintf("[%s]:%d", s.host, s.port)
 	}
-	
+
 	s.server = &http.Server{
 		Addr:    addr,
 		Handler: router,

scripts/build-deb.sh

@@ -45,22 +45,18 @@ LDFLAGS="-w -s -X main.version=$VERSION"
 
 # Build main skyview binary
 echo_info "Building skyview..."
-go build -ldflags="$LDFLAGS" \
+if ! go build -ldflags="$LDFLAGS" \
     -o "$DEB_DIR/usr/bin/skyview" \
-    ./cmd/skyview
-
-if [ $? -ne 0 ]; then
+    ./cmd/skyview; then
     echo_error "Failed to build skyview"
     exit 1
 fi
 
 # Build beast-dump utility
 echo_info "Building beast-dump..."
-go build -ldflags="$LDFLAGS" \
+if ! go build -ldflags="$LDFLAGS" \
     -o "$DEB_DIR/usr/bin/beast-dump" \
-    ./cmd/beast-dump
-
-if [ $? -ne 0 ]; then
+    ./cmd/beast-dump; then
     echo_error "Failed to build beast-dump"
     exit 1
 fi
@@ -88,9 +84,7 @@ sed -i "s/Installed-Size:.*/Installed-Size: $INSTALLED_SIZE/" "$DEB_DIR/DEBIAN/c
     echo "Installed-Size: $INSTALLED_SIZE" >> "$DEB_DIR/DEBIAN/control"
 
 # Build the package
-dpkg-deb --root-owner-group --build "$DEB_DIR" "$BUILD_DIR/$DEB_FILE"
-
-if [ $? -eq 0 ]; then
+if dpkg-deb --root-owner-group --build "$DEB_DIR" "$BUILD_DIR/$DEB_FILE"; then
     echo_info "Successfully created: $BUILD_DIR/$DEB_FILE"
     
     # Show package info