Replaces Go bail! arms with GoAstExtractor + CodeGoAstV1Chunker. Adds
go_file_ingests_and_searches_as_code_citation integration test — asserts
citation.lang=go, symbol=chunk.ParseDoc, code_lang=go.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Task H implementer chose code-typescript-v1 but plan + design §3.3 use the
short form (chunker is code-ts-ast-v1 / code-js-ast-v1). Aligning parser
versions to match: rust=code-rust-v1 / python=code-python-v1 / ts=code-ts-v1
/ js=code-js-v1 (Task K). Fixes 2 sites: const PARSER_VERSION + integration
test assertion.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add `MediaType::Code("rust")` dispatch arm in `ingest_one_asset`,
`ingest_one_code_asset` fn (faithful mirror of `ingest_one_pdf_asset`),
and `backfill_code_lang` post-processing in `App::search_uncached`.
Integration test `code_ingest_smoke.rs` verifies full pipeline:
ingest `.rs` → Citation::Code hit with lang/symbol/line_start.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>