jensandClaude Sonnet 5
ca27e1e705
Repo root had ~35 groups of .prj/.dat files loose alongside the build system and source, all sharing one flat namespace. Centralize the new prj/<name>/ convention inside AStack::loadWeights/saveWeights/ loadTrainingBatch/saveTrainingBatch and StackCreator::fromFile/toFile (via a new AStack::projectDir() helper) -- these already have access to the project name, so callers (poet.cpp, the GUI) need no changes at all; they keep passing the same base directory they always did. Filenames inside each project folder are unchanged (e.g. prj/mnist_2/mnist_2.prj, prj/mnist_2/mnist_2.Layer.0.w.dat) -- only the directory moves. Added Matutils::ensureDir() (mkdir -p equivalent; no std::filesystem in C++11) since ofstream won't create directories, used wherever a project is saved for the first time. File migration for existing projects is a separate commit. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016K8Gu7Qejd11JbdiHZqYAs