Here is a list of all documented files with brief descriptions:

include
bfc_cli.h	Command-line parsing interface
bfc_codegen.h	Public assembly code-generation interface
bfc_codegen_internal.h	Internal backend contract and assembly representation
bfc_common.h	Common compile-time utility macros
bfc_config.h	Compiler-wide configuration constants
bfc_error.h	Compiler error values and diagnostics
bfc_io.h	Source-file loading and source-line access
bfc_ir.h	Brainfuck intermediate representation interface
bfc_jumptable.h	Bracket validation and matching table interface
bfc_lexer.h	Brainfuck lexical analysis interface
bfc_memory.h	Checked array-allocation helpers
bfc_target.h	Target architecture and operating-system interface
bfc_token.h	Brainfuck token definitions and token-stream ownership
bfc_version.h
src
backend
bfc_backend_macos_aarch64.c	MacOS AArch64 assembly backend
bfc_backend_macos_x86_64.c	MacOS x86-64 assembly backend
bfc.c	Bfc compiler driver
bfc_cli.c	Table-driven command-line parser
bfc_codegen.c	Generic IR-to-assembly code generation
bfc_error.c	Error construction and diagnostic rendering
bfc_io.c	Source-file input and line extraction
bfc_ir.c	IR construction, optimization, and destruction
bfc_jumptable.c	Bracket-matching validation pass
bfc_lexer.c	Brainfuck lexer implementation
bfc_memory.c	Checked array-allocation implementation
bfc_target.c	Target-triple parsing and host detection
bfc_token.c	Token construction and token-stream cleanup