[evangress]

Implements every item in ROADMAP.md (sections 0–8), one commit per section.

Decisions

• Package renamed library → fpc. This breaks existing imports; every import, test, doc, the GUI, and the demos are updated.
• Units: document the split rather than adding Pint everywhere. Plain SI floats for the math, Pint at the boundaries (docs/units.md).
• Reference data lives in fpc/data/ (not a top-level data/), so it ships when the package is installed elsewhere.

What's new

• Installable package (hatchling) with an fpc console command (fpc pipe-flow, fpc water).
• Library: Fluids.colebrook_friction_factor (brentq), Fluids.pipe_flow, Design (root-finding sizing and SLSQP lightest beam), Properties (pandas tables with linear/cubic interpolation and no silent extrapolation), Utility.read_table/write_table (CSV/Excel), Thermo.log_mean_temperature_difference.
• Data: water tables generated from CoolProp (IAPWS-95, generator included), materials, and AISC W-shapes, each with its source cited.
• Learning material: templates/engineering_script.py; 8 worked examples plus the moved radiology demo; the tool-building ladder (docs/building-tools.md: script → argparse → tkinter → Streamlit → installed command); 3 notebooks; PACKAGES.md (every package's release date and link checked; PySpice, harold, and pyradiomics flagged as stale).
• Tooling: ruff (lint + format applied repo-wide, so the diff is large), mypy, pre-commit, an mkdocs-material API site generated from the docstrings, and CI for all of it. A docs workflow deploys to Pages from main.
• Contributor: new-domain checklist and issue forms.

Verification

• ruff check, ruff format --check, and mypy are clean.
• 149 tests pass, including subprocess runs of every example and the template, and execution of every notebook.
• mkdocs build --strict passes.
• Streamlit app checked headlessly with AppTest.
• An isolated wheel install imports fpc and reads the bundled data.

Before / after merging

• Enable Pages: Settings → Pages → Source: "GitHub Actions". Until then the docs deploy job will fail on main.
• Follow-ups are in ROADMAP.md. Most important: verify materials.csv and w_shapes.csv against their original sources. The W-shape rows pass a physics self-consistency test, but neither table was copied from a fetched source.
• The ruff-format commit touches most files. Review it separately (57c2113).

🤖 Generated with Claude Code