PGx: full call detail (PGX-016..020, 027/028, 031), pgx coverage (PGX-009/035), full HGVS

- supporting_variants.tsv, unresolved_variants.tsv, variants_not_covered.tsv with PGX-026 metadata; per-allele
  supporting/unresolved sites for both alleles of every candidate; variant_change vs top, distant_alternative,
  unexplained_variants, alleles_impacted_by_no_call, alleles_tested.
- simurg pgx coverage: callable / not_covered / masked / equivalent_to per allele and manifest.
- HGVS on GRCh38 RefSeq accessions (NC_...:g.).

tests/unit/test_pgx_db.py

@@ -121,3 +121,29 @@ def test_db_build_deterministic(tmp_path: Path) -> None:  # IN-053, CLI-035
     meta = dict(con.execute("select key, value from meta").fetchall())
     assert meta["content_sha256"][:12] in outs[0].name and json.loads(meta["allele_sources"])[0]["name"] == "CPIC"
     assert con.execute("select phenotype from phenotypes").fetchone() == ("Poor Metabolizer",)
+
+
+def test_coverage_statuses(tmp_path: Path) -> None:  # PGX-009 / PGX-035
+    from simurg.pipeline.pgx_db import coverage_rows
+
+    src = tmp_path / "sources" / "cpic-20260101"
+    src.mkdir(parents=True)
+    for k, v in _tables().items():
+        (src / f"{k}.json").write_text(json.dumps(v))
+    (src / "source.json").write_text(json.dumps({"name": "CPIC", "version": "2026-01-01", "retrieved": "20260101"}))
+    fa = tmp_path / "g.fa"
+    fa.write_text(">chr1\n" + SEQ + "\n")
+    out = tmp_path / "db"
+    r = CliRunner().invoke(app, ["pgx", "db", "build", "--sources", str(tmp_path / "sources"), "--fasta", str(fa),
+                                 "--out", str(out), "--quiet"])  # fmt: skip
+    assert r.exit_code == 0, r.output
+    db = next(out.glob("pgx_db-1-*.sqlite"))
+    con = sqlite3.connect(db)
+    con.executemany("INSERT INTO probe_map VALUES (?, ?, ?, ?, ?, ?)",
+                    [("M", "p_star2", "chr1", 5, "A", "G"), ("M", "p_star3", "chr1", 7, "GT", "G")])  # fmt: skip
+    con.execute("INSERT INTO masks VALUES ('M', 'p_star3', 'test')")
+    con.commit()
+    con.close()
+    st = {r["allele"]: r["status"] for r in coverage_rows(db, "M")}
+    assert st["*1"] == "callable" and st["*2"] == "callable"
+    assert st["*3"] == "masked" and st["*5"] == "not_covered"