P2 (WIP): raw X/Y assembly, canonical Parquet model, simurg ingest

- signal/raw_xy.py: vectorised Infinium I/II raw X/Y and control assembly
  (plan §7.1) with a per-chip address-map cache; IN-027 coverage gate
- core/schemas.py: Arrow schemas (loci, sample_intensity, controls),
  deterministic atomic Parquet writing
- pipeline/ingest.py + CLI: discovery, sheet, IN-010 naming, overwrite
  check before any work, spawn-based workers, per-sample isolation,
  --resume by input hashes, run manifest, exit codes 0/3/4
- matches gtc2vcf raw X/Y and controls exactly on 18 GSA samples;
  outputs byte-identical across thread counts and layouts

src/simurg/core/errors.py

@@ -72,6 +72,9 @@ CATALOGUE: dict[str, MessageDef] = dict(
         _m("E_IDAT_ENCRYPTED", "error", "Encrypted (version 1) IDATs are not supported", "IN-023"),
         _m("E_IDAT_PAIR_MISMATCH", "error", "Red and Grn IDATs of a sample do not match", "IN-023"),
         _m("W_IDAT_NAME_MISMATCH", "warning", "IDAT barcode/position disagrees with its file name", "IN-023"),
+        _m("E_IDAT_MANIFEST_MISMATCH", "error", "IDATs and manifest belong to different products", "IN-027"),
+        _m("W_IDAT_LOW_ADDRESS_COVERAGE", "warning", "Some manifest addresses are absent from the IDAT", "IN-027"),
+        _m("W_IDAT_MANIFEST_NAME", "warning", "IDAT names a different manifest than the BPM", "IN-027"),
         _m("W_IDAT_NO_SCAN_TIME", "warning", "IDAT has no scan entry in its run info", "IN-024"),
         _m("I_UNLISTED_IDATS", "info", "IDAT pairs not listed in the sample sheet are ignored", "IN-016"),
         _m("E_DUP_GTC", "error", "Several GTC files resolve to the same sample", "IN-030"),