Fix negative blank line indentation

lib/rubocop/socketry/layout/consistent_blank_line_indentation.rb

@@ -49,6 +49,7 @@ def indentation(width)
 				def on_new_investigation
 					indentation_deltas = build_indentation_deltas
 					current_level = 0
+					semantic_level = 0
 
 					processed_source.lines.each_with_index do |line, index|
 						line_number = index + 1
@@ -75,7 +76,16 @@ def on_new_investigation
 							end
 						end
 
-						current_level += delta
+						if delta > 0
+							current_level += 1
+							semantic_level += delta
+						elsif delta < 0
+							semantic_level += delta
+							current_level = [current_level, semantic_level].min
+						end
+
+						current_level = [current_level, 0].max
+						semantic_level = [semantic_level, 0].max
 					end
 				end
 
@@ -87,10 +97,6 @@ def on_new_investigation
 				def build_indentation_deltas
 					Hash.new(0).tap do |deltas|
 						walk_ast_for_indentation(processed_source.ast, deltas)
-
-						# Cap deltas to a maximum of +1 or -1 per line to handle cases where
-						# multiple structures open/close on the same line (e.g., `[..., {`)
-						deltas.transform_values!{|delta| delta.nil? ? nil : delta.clamp(-1, 1)}
 					end
 				end
 

releases.md

@@ -1,5 +1,9 @@
 # Releases
 
+## Unreleased
+
+  - Fixed `Layout/ConsistentBlankLineIndentation` to preserve semantic indentation depth for same-line nested structures, avoiding negative indentation levels when later closing lines are processed.
+
 ## v0.10.0
 
   - Fixed `Layout/BlockDelimiterSpacing` to correctly treat a block as a statement (requiring space before `{`) when it is the sole body of a multi-line outer block or method/class/module definition. Previously, the absence of a `:begin` wrapper in the AST caused such blocks (e.g. `Async {foo}` or `let(:bar) {baz}` inside a `describe`/`context` block) to be misclassified as expression-context and have their space incorrectly removed.

test/rubocop/socketry/layout/consistent_blank_line_indentation.rb

@@ -830,4 +830,16 @@ def foo
 			expect(offenses.first.message).to be(:include?, message)
 		end
 	end
+
+	with "a top-level blank line after nested array and hash" do
+		let(:source) {"CONFIG = [[Foo, {\n\tbar: true\n}]\n]\n\nputs CONFIG\n"}
+
+		it "does not crash when clamped deltas would otherwise make indentation negative" do
+			processed_source = RuboCop::ProcessedSource.new(source, RUBY_VERSION.to_f)
+			investigator = RuboCop::Cop::Commissioner.new([cop], [], raise_error: true)
+			report = investigator.investigate(processed_source)
+			offenses = report.offenses
+			expect(offenses).to be(:empty?)
+		end
+	end
 end