[anatoly-scherbakov]

Summary

Builds on #364.

• Reject YAML-LD mapping keys unless they are string scalars, including nested and unhashable keys.
• Report mapping-key-error through JsonLdError and enable the five passing conformance cases.

Validation

• YAML-LD suite: 64 passed, 29 skipped with each document loader; audited all 34 previously skipped cases.
• Expansion tests: 51 passed, including 18 new cases.
• Broader suite: 2,028 passed, 56 skipped, 1 deselected, 1 xfailed. Deselected the unchanged schema.org network test after it stalled locally for over two minutes; CI runs it.
• make lint and git diff --check passed.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
lib/pyld
canon.py	290	12	96%	36, 47, 51, 55, 85–86, 530, 552, 616, 626, 680–681
context_resolver.py	103	8	92%	78, 137, 151, 197, 203–205, 229
iri_resolver.py	141	3	98%	311–312, 322
jsonld.py	2509	159	94%	255–259, 308, 345, 350, 360, 377–392, 428–429, 471, 479, 499, 507–508, 703–704, 719–720, 783–788, 813–814, 829–830, 840–841, 867, 915, 929–930, 953–954, 996, 1003, 1010, 1078, 1103, 1125–1127, 1137–1140, 1155, 1178, 1190–1193, 1289, 1298–1301, 1321, 1350, 1383, 1387, 1421, 1438–1440, 1450–1452, 1495, 1514–1517, 1530, 1579, 1682–1689, 1716–1718, 1744–1747, 1923, 1961, 2267, 2398, 2407–2414, 2508, 2535, 2559, 2567, 3161, 3211, 3230, 3295, 3348, 3351, 3414, 3499, 3533, 3820, 3825, 3827, 4022–4024, 4173, 4236, 4475, 4763, 4895, 4929, 4958–4961, 4983–4984, 5167, 5231, 5258, 5332, 5334, 5352, 5450, 5499, 5731, 5733, 5772, 5774, 5783, 5925, 6053, 6140, 6260–6274, 6408, 6635, 6641–6645, 6684, 6778–6779, 6788
util.py	87	4	95%	15, 64, 137, 157
lib/pyld/cli
app.py	44	2	95%	77, 80
entry.py	12	3	75%	9–11, 24
input.py	52	1	98%	57
lib/pyld/documentloader
aiohttp.py	71	22	69%	29–39, 68, 74, 86, 98–106, 118–121, 138, 153–156
requests.py	52	5	90%	57, 71, 83–91
requests_sqlite_cache.py	25	1	96%	19
scheme_directed.py	15	1	93%	38
type_directed.py	15	1	93%	41
TOTAL	3848	222	94%

Tests	Skipped	Failures	Errors	Time
2086	57 💤	0 ❌	0 🔥	1m 24s ⏱️