Initial import: eCW Charge Validation bot and results Portal

Snapshot of the working project as of 2026-10-23 (local 2d4d4fc), one
commit with no earlier history: the tracked files were de-identified
first (synthetic claim ids and patient data only; see Context.md
section 7). Credentials, run logs, screenshots, claim reports and client
workbooks are gitignored and not included.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_import_payer_groups.py

@@ -0,0 +1,76 @@
+r"""
+tools/import_payer_groups.py — turning the Claim Status Dashboard's
+Payer Name / Payer Group Name pairs into payer_groups.json.
+
+    python tests\test_import_payer_groups.py
+
+Only `build()` is exercised: the merge rules. No network file is read.
+"""
+
+import sys
+import pathlib
+import collections
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT / "tools"))
+
+import import_payer_groups as tool          # noqa: E402
+
+
+def _pairs(**groups_by_payer):
+    return {p.replace("_", " "): collections.Counter(g)
+            for p, g in groups_by_payer.items()}
+
+
+def case_dashboard_group_wins_and_names_are_kept_exactly():
+    mapping, conflicts, kept = tool.build(
+        _pairs(Medicaid={"Medicaid": 5}, Anthem={"Commercial Ins": 3}),
+        {"Anthem": "Commercial"})
+    assert mapping == {"Anthem": "Commercial Ins", "Medicaid": "Medicaid"}
+    assert conflicts == {} and kept == {}
+
+
+def case_a_conflict_keeps_the_group_on_most_rows_and_is_reported():
+    mapping, conflicts, _ = tool.build(
+        _pairs(Humana={"Medicare": 9, "Commercial Ins": 2}), {})
+    assert mapping["Humana"] == "Medicare"
+    assert conflicts == {"Humana": {"Medicare": 9, "Commercial Ins": 2}}
+
+
+def case_payers_missing_from_the_dashboard_are_kept_and_renamed():
+    mapping, _, kept = tool.build(
+        _pairs(Medicaid={"Medicaid": 1}),
+        {"BH ROCK MTN UB": "RAE payer", "Odd Payer": "Something Else"})
+    assert kept == {"BH ROCK MTN UB": "RAE (Behavioral Health)",
+                    "Odd Payer": "Something Else"}
+    assert mapping["BH ROCK MTN UB"] == "RAE (Behavioral Health)"
+
+
+def case_output_is_sorted_case_insensitively():
+    mapping, _, _ = tool.build(
+        _pairs(b={"X": 1}, A={"X": 1}, c={"X": 1}), {})
+    assert list(mapping) == ["A", "b", "c"]
+
+
+CASES = [v for k, v in sorted(globals().items()) if k.startswith("case_")]
+
+
+def main() -> int:
+    failures = 0
+    for fn in CASES:
+        name = fn.__name__[5:].replace("_", " ")
+        try:
+            fn()
+            print(f"  ok    {name}")
+        except AssertionError as exc:
+            print(f"  FAIL  {name}: {exc}")
+            failures += 1
+        except Exception as exc:
+            print(f"  ERROR {name}: {type(exc).__name__}: {exc}")
+            failures += 1
+    print(f"\n{len(CASES) - failures}/{len(CASES)} passed")
+    return 1 if failures else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())