task: desugar-let-3variant

[redpeacock78]

概要

_ds_result_ng_return の ?= unwrap失敗時分岐に、JSON型再設計(issue #44)で導入した3variantエラー型を追加する。

• JsonParseError → 400
• JsonTypeError → 422
• JsonTooDeepError → 400

対象17 fixture + PR #106で追加されたJSON系fixture10件を再生成した(いずれも_ds_result_ng_return由来の3行追加のみ)。

テスト

• bash tests/unit/dsl/run.sh → 183 passed, 0 failed
• make test-unit → 572 passed, 0 failed, 0 skipped

Refs #44

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Review details

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: ecce2dbd-a713-49e6-9cf2-ff4adf59b4e0

📥 Commits

Reviewing files that changed from the base of the PR and between 0219275 and d9d3d70.

📒 Files selected for processing (28)

• dsl/desugar_let.awk
• tests/unit/dsl/cache_dispatch_question_eq/expected.awk
• tests/unit/dsl/classify_validator_strips_untrusted/expected.awk
• tests/unit/dsl/json_decode_t_nullable_unwrap/expected.awk
• tests/unit/dsl/option_unwrap_error/expected.awk
• tests/unit/dsl/option_unwrap_ok/expected.awk
• tests/unit/dsl/qeq_auth_error/expected.awk
• tests/unit/dsl/qeq_ctx_req_json_array_t/expected.awk
• tests/unit/dsl/qeq_ctx_req_json_collision/expected.awk
• tests/unit/dsl/qeq_ctx_req_json_map/expected.awk
• tests/unit/dsl/qeq_ctx_req_json_nested_generic/expected.awk
• tests/unit/dsl/qeq_ctx_req_json_object_map/expected.awk
• tests/unit/dsl/qeq_ctx_req_json_record_t/expected.awk
• tests/unit/dsl/qeq_json_decode_nested_generic/expected.awk
• tests/unit/dsl/qeq_json_decode_t_list/expected.awk
• tests/unit/dsl/qeq_json_scalar_decode_t/expected.awk
• tests/unit/dsl/qeq_non_json_result_scalar/expected.awk
• tests/unit/dsl/qeq_parse_error/expected.awk
• tests/unit/dsl/safe_escape_html_ok/expected.awk
• tests/unit/dsl/safe_fragment_interpolation_escape_ok/expected.awk
• tests/unit/dsl/safe_namespace_escape_ok/expected.awk
• tests/unit/dsl/safe_sink_ok/expected.awk
• tests/unit/dsl/string_interpolation_untrusted_propagates/expected.awk
• tests/unit/dsl/union_generic_top_level_split/expected.awk
• tests/unit/dsl/untrusted_sig/expected.awk
• tests/unit/dsl/untrusted_transform_ok/expected.awk
• tests/unit/dsl/untrusted_trim_then_escape_html_ok/expected.awk
• tests/unit/dsl/unwrap_union_option_result_ok/expected.awk

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