Support JSON functions

[JasonShin]

No description provided.

[Copilot]

Pull request overview

This PR extends the TypeScript type generator to infer structured result types for PostgreSQL JSON/JSONB construction and aggregation functions (instead of falling back to any), updating demo snapshots accordingly.

Changes:

• Add a new TsFieldType::StructuredObject variant and TS formatting for structured object literals.
• Add expression translation support for json_build_object/jsonb_build_object and json_agg/jsonb_agg (with limited inference).
• Update demo .queries.ts / snapshot expectations to reflect structured JSON result types.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tests/sample/sample.queries.ts	Removes previously committed generated sample query types.
tests/demo/select/no-default-table.snapshot.ts	Updates expected JSON build object fields from any to a structured object type.
tests/demo/select/no-default-table.queries.ts	Updates expected JSON build object fields from any to a structured object type.
tests/demo/postgres/jsonb_operations.snapshot.ts	Updates expected jsonb_build_object / jsonb_agg result types to structured object / array of objects.
tests/demo/postgres/jsonb_operations.queries.ts	Updates expected jsonb_build_object / jsonb_agg result types to structured object / array of objects.
src/ts_generator/types/ts_query.rs	Introduces TsFieldType::StructuredObject and renders it as a TS object-literal type.
src/ts_generator/sql_parser/expressions/translate_expr.rs	Adds inference logic for JSON build + JSON aggregation functions.
src/ts_generator/sql_parser/expressions/functions.rs	Adds function-name classification helpers for JSON build/aggregation functions.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 42 out of 42 changed files in this pull request and generated 4 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 41 out of 41 changed files in this pull request and generated 7 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 43 out of 50 changed files in this pull request and generated 6 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 44 out of 51 changed files in this pull request and generated 2 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.