n6 BOM diagnostic + parity test fixtures#5
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Close the PoC fidelity gap: validate_n6 now emits "byte-canonical: UTF-8 with no BOM" via byte_at (ef bb bf), avoiding the encoding-fragile U+FEFF source literal. Verified end-to-end (LSP didOpen of a BOM doc → publishDiagnostics carries the BOM diag). Adds lsp/test_fixtures/ (9 cases: BOM/CRLF/indent-header/ unknown-type/malformed/continuation-indent/unrecognised/comments/valid) as a .py-parity regression reference (run: python3 lsp/n6_lsp.py --check <fixture>). Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
validate_n6now emitsbyte-canonical: UTF-8 with no BOMviabyte_at(ef bb bf) — closes the PoC fidelity gap. Verified: LSP didOpen of a BOM doc → publishDiagnostics carries the BOM diag.lsp/test_fixtures/(9 cases) as a.py-parity regression reference.Test plan
HEXA_MAC_BUILD_OK=1 hexa build lsp/n6_lsp.hexacompiles cleanpython3 lsp/n6_lsp.py --check <fixture>runs on all 9 fixtures🤖 Generated with Claude Code