Field	Operation	Value	Purpose
project_apps	Set	List of rebar_app_info:t()	Discovered project applications
{parsed_deps, Profile}	Set per profile	List of parsed deps	Dependencies per profile
{deps, Profile}	Updated per profile	Merged dep list	Combined top-level and app deps

Field	Value	Purpose
name	Application name (binary)	Application identifier
dir	Application source directory	Where source files are
out_dir	Build output directory	Where compiled files go
ebin_dir	out_dir/ebin	Where .beam files go
opts	Merged configuration	App-specific config
app_details	Parsed .app data	Application metadata
applications	Runtime dependencies	From .app file
deps	Build dependencies	From rebar.config