docs: rewrite README and docs/ — records that the program cannot start

[willtheorangeguy]

Rewrites the README, restructures docs/, and records six defects.

ProgramVer does not currently run. Three files the code opens are absent from the repository:

Wanted by	File	Present
ProgramVer()	imgs/dfdlogo.gif	No — though MANIFEST.in lists it
openLicense()	LICENSE.txt	No — the repo has LICENSE.md
openEULA()	EULA.txt	No

The first raises TclError before any widget is packed, so there is no window at all — via python main.py, the programver console script, the PyInstaller build, or copying the module into another project. The README now opens with a Status section saying so.

CI is green throughout, which is the third finding: all 14 tests patch builtins.open and every Tk widget, and test_get_resource_path asserts only that the returned string ends with dfdlogo.gif — never that it resolves. So "100% coverage of the main module" is true and says nothing about whether the program works. docs/testing.md sets this out, with the four-line resource-existence test that would have caught all three.

README — 121 lines. The logo used a /blob/ URL (HTML, not image bytes) so it was broken everywhere; both images now come from the .github icons repo. Several How To Use links omitted /blob/ entirely and 404'd. ## Changelog and ## You may also like are gone; the credits table is untouched.

docs/ restructured. TESTING.md → testing.md, rewritten around what the suite does not check. CUSTOMIZATION.md removed and replaced by configuration.md — the old one located each editable string by line number ("Line 11", "Line 40"), and those no longer match main.py, so following them edits the wrong string and leaves the window unchanged. USAGE.md removed (it told you to double-click send.exe, from some other project). docs/images/ removed. New: index, quickstart, installation, configuration, architecture, development, faq, troubleshooting, roadmap.

Also recorded: the window displays a GPL v3 notice for "Dog Face Development Co." dated 2024, while LICENSE.md is MIT © 2026 willtheorangeguy — placeholder text by design (each label is marked # change as needed), but this is a tool whose sole purpose is displaying accurate licence information, and its default output is the wrong licence, holder, and year; setup.py and setup.cfg declare imgs/ as the package root (package_dir={"": "imgs"}, find_packages(where="imgs")) where there are no Python packages, so only py_modules=["main"] ships anything and a real package added later would be silently excluded; and the README told readers to copy ProgramVer.py, which does not exist.

Documentation only — no source, asset, or packaging changes. Restoring imgs/dfdlogo.gif is the smallest change that turns this back into a working program.