fix: remove excessive metadata

[maksymbuleshnyi]

Note

Medium Risk
Changes what is stored in memory and propagated to sub-agents; callers who relied on extra input fields in metadata will see different behavior.

Overview
Stops merging Pydantic extra fields from AgentInputSchema into the metadata dict built in _prepare_metadata.

Agent runs still copy input_data.metadata, strip leaked keys (files, images, tool_params), and add user_id / session_id when set. Arbitrary extra input properties are no longer folded into metadata used for _current_call_context, memory saves, and child-agent context. Extra fields continue to be available for prompt templating via model_dump(exclude=standard_fields) in execute().

^{Reviewed by Cursor Bugbot for commit 1ca3404. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

Coverage Report •

File	Stmts	Miss	Cover	Missing
dynamiq/nodes/agents
base.py	1054	306	70%	62, 68, 160–162, 177, 185, 188, 332, 350, 360, 363, 406, 408, 439–441, 443–448, 453–455, 477–483, 487–492, 495–499, 511–512, 514–519, 521–522, 530, 546, 548, 550, 571–572, 587, 660–661, 665–668, 677–678, 688–691, 705–712, 720–722, 757, 768–769, 894, 897, 901–902, 926–942, 962, 966, 1007–1008, 1012–1013, 1026, 1067, 1099, 1110, 1134–1137, 1139, 1141, 1143–1145, 1147–1148, 1155, 1157–1158, 1162–1164, 1170, 1175, 1178–1180, 1201, 1203, 1221–1223, 1227–1229, 1232, 1244–1245, 1266–1271, 1288–1289, 1291–1292, 1296–1297, 1299–1306, 1309–1312, 1314–1315, 1317–1319, 1339, 1346–1347, 1352, 1369–1370, 1375, 1386–1388, 1399–1400, 1405, 1413, 1415, 1432, 1438, 1445, 1469, 1492–1493, 1509, 1516–1519, 1522, 1527, 1535, 1559, 1563–1564, 1591–1593, 1595–1600, 1602–1603, 1605–1613, 1620, 1622–1625, 1627–1635, 1642, 1644, 1646–1648, 1662, 1681–1682, 1687, 1693, 1750, 1764, 1770, 1773, 1780, 1839, 1848, 1851, 1873–1875, 1880–1881, 1897–1898, 1902, 1915, 1919, 1925, 1927–1928, 1930–1931, 1933–1936, 1938, 1940, 1942–1945, 1947, 1950, 1952, 1956, 1959, 1961, 1965, 1968, 1970, 1974, 1977–1979, 1986, 1993, 1996–1997
TOTAL	33302	9692	70%

Tests	Skipped	Failures	Errors	Time
2448	2 💤	0 ❌	0 🔥	4m 2s ⏱️