• There are 20 files with units, with 2,795 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 0 complex files (McCabe index sum 126-250; 0 lines of code)
• 2 medium complex files (McCabe index sum 51-125; 799 lines of code)
• 3 slightly complex files (McCabe index sum 26-50; 870 lines of code)
• 15 simple files (McCabe index sum 1-25; 1,126 lines of code)
• 30 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
app.ts in apps/server/src	382	4	64	17	42
webcontainer.ts in apps/frontend/src/utils	417	19	59	14	9
PreviewFrame.tsx in apps/frontend/src/components	300	11	37	12	5
dynamo.ts in apps/server/src	175	12	33	19	14
bedrock.ts in apps/server/src	395	10	27	7	15
filesystemSync.ts in apps/frontend/src/utils	94	5	19	20	7
api.ts in apps/frontend/src/utils	125	6	17	14	4
PuzzleEditor.tsx in apps/frontend/src/pages	147	1	13	9	13
s3.ts in apps/server/src	52	4	9	17	4
config.ts in apps/server/src	40	2	8	20	7
cognito-gatekeeper.ts in cdk/lib	156	3	6	4	4
ExistingPuzzlesBrowser.tsx in apps/frontend/src/components	65	2	6	9	5
EditableTitle.tsx in apps/frontend/src/components	44	1	4	9	4
vibecoding-puzzles-lab.ts in cdk/lib	244	1	3	1	3
UserInfoLoader.ts in apps/frontend/src/components	30	1	3	10	3
HomepageBrowser.tsx in apps/frontend/src/pages	43	2	2	5	1
auth.ts in apps/server/src	37	1	2	5	2
eslint.config.js in root	22	1	1	5	1
vite.config.ts in apps/frontend	24	1	1	4	1
common-lib.ts in apps/common-lib/src/lib	3	1	1	33	1

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.