Better json support

[phiSgr]

Note

Introduce rich JSON column support with typed paths/options end-to-end (core, ClickHouse DDL/parsing, TS/Py generators, libs), with tests and docs.

• Core/Type System:
  • Add structured JSON column with options via JsonOptions (typed paths, max_dynamic_paths/types, skip_paths/regexps) and update ColumnType::Json(JsonOptions) across core.
  • Propagate through serde/proto conversion and lifecycle/diff logic; adjust CSV import to reject complex JSON.
• ClickHouse Mapping/DDL/Parsing:
  • Map JsonOptions to ClickHouse JSON(...) DDL; parse JSON options from type strings; support in alt client and mapper.
• Generators:
  • TypeScript: emit inner interfaces for typed JSON and ClickHouseJson<...> annotations; wire through codegen and schema collection.
  • Python: emit inner Pydantic models with ConfigDict(extra='allow') and Annotated[..., ClickHouseJson(...)].
• Validation/Ingestion:
  • Enforce presence of required JSON typed paths during request validation; allow extra fields; extend map key validation messages.
• Protobuf:
  • Extend ColumnType with Json message and JsonTypedPath to carry options.
• Libraries:
  • ts-moose-lib: add ClickHouseJson marker and JSON options plumbing; update type converter to detect JSON mappings.
  • py-moose-lib: add ClickHouseJson dataclass and JSON options; convert Pydantic models to typed JSON specs.
• Tests/Templates:
  • Add JsonTest models in TS/Py templates; end-to-end test for JSON DDL and data ingestion/querying; update expected schemas.
• Docs:
  • Expand JSON type docs with typed paths, options, examples for TS/Py and benefits.

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Project	Deployment	Preview	Comments	Updated (UTC)
framework-docs	Ready	Preview	Comment	Oct 23, 2025 9:16pm

[callicles]

2 nitpicks about making the code smaller and better structured