Fix victools v5.0.0 compilation: adapt to Jackson 3 internal migration

[Copilot]

victools jsonschema-generator v5.0.0 migrated its internals from Jackson 2 (com.fasterxml.jackson.*) to Jackson 3 (tools.jackson.*), breaking compilation at the boundary where victools output feeds into Confluent's JsonSchema (which still uses Jackson 2).

Core changes

• SchemaRegistry.createJsonSchemaGenerator() — Removed ObjectMapper parameter since victools now uses its own Jackson 3 ObjectMapper internally. Use the (SchemaVersion, OptionPreset) constructor instead. Convert generateSchema() output to String before passing to Confluent's JsonSchema:

  // Before: returns tools.jackson.databind.node.ObjectNode, incompatible with JsonSchema(JsonNode)
  new JsonSchema(schemaGenerator.generateSchema(clazz), List.of(), Map.of(), version);
  // After: serialize to string at the Jackson 2/3 boundary
  new JsonSchema(schemaGenerator.generateSchema(clazz).toString(), List.of(), Map.of(), version);

• TypeAttributeOverride callback — Switched to Jackson 3 ArrayNode import for the BigDecimal type override
• JacksonModule → JacksonSchemaModule — Replaced deprecated class across all usages
• KafkaSchemaRegistry — Removed now-unused ObjectMapper constructor parameter; updated all 6 call sites
• Test files (RuntimeTests, AkcesClientTests, JsonSchemaTests, 5× TestUtils) — Same pattern applied to inline schema generator construction and createJsonSchemaGenerator() calls

---

📍 Connect Copilot coding agent with Jira, Azure Boards or Linear to delegate work to Copilot in one click without leaving your project management tool.