Update documentation and scripts for font addition process; introduce uv run add-font CLI command for streamlined font management. Enhance formula generation with improved class name formatting and validation steps. Remove outdated font formula files.

tests/test_no_orphan_formulae.py

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+"""Global tests: no orphan formulae, no duplicate formula names."""
+import pytest
+
+from tests.conftest import FONT_FILES_DIR, FORMULA_DIR, get_font_dir_names
+
+
+def test_every_formula_has_matching_font_folder():
+    """Every Formula/font-*.rb has a matching font_files/font-<name>/ directory."""
+    formula_files = sorted(FORMULA_DIR.glob("font-*.rb"))
+    for formula_path in formula_files:
+        name = formula_path.stem  # e.g. font-acrylic-hand
+        font_dir = FONT_FILES_DIR / name
+        assert font_dir.is_dir(), (
+            f"Orphan formula: {formula_path.name} has no matching font folder {font_dir}"
+        )
+
+
+def test_no_duplicate_formula_names():
+    """Only one formula file per font-<name> (no duplicate basenames)."""
+    formula_files = list(FORMULA_DIR.glob("font-*.rb"))
+    names = [p.stem for p in formula_files]
+    seen = set()
+    for n in names:
+        assert n not in seen, f"Duplicate formula name: {n}.rb"
+        seen.add(n)
+
+
+def test_formula_count_matches_font_count():
+    """Number of font-*.rb formulae equals number of font-* directories."""
+    font_names = get_font_dir_names()
+    formula_count = len(list(FORMULA_DIR.glob("font-*.rb")))
+    assert formula_count == len(font_names), (
+        f"Formula count ({formula_count}) != font dir count ({len(font_names)})"
+    )