[cschanhniem]

Implements I1 from NEXT_100_PR_MAP: FASTA export module.

What

• src/openamp_foundry/export/fasta_export.py: FASTA export with FAE- prefix
• FastaExportEntry (6 fields), FastaExportRecord (7 fields), FastaExportValidationResult
• VALID_EXPORT_CONTEXTS (4), VALID_CANDIDATE_STATUSES (5), VALID_AMINO_ACIDS (20)
• DRY_LAB_SAFE_CONTEXTS: dry_lab_only/partner_review/internal_use (excludes public_release)
• TOY_ID_PREFIXES: TOY-/MOCK-/EXAMPLE-/DEMO-/TEST-
• 10 validation rules: prefix, context, dry-lab+context consistency, total_candidates==len(entries), export_note claim term, amino acid validity, sequence length [5,100], entry context, entry status, dry_lab_only→toy-data enforcement
• format_fasta_export(): FASTA with ; comment header and 60-char line wrapping
• 63 tests across 5 classes; BASELINE 7969→8032

Why

Standard FASTA format lets partner labs directly import candidates into existing pipelines without custom parsers. The dry-lab enforcement gates (toy-id prefix OR is_toy_data flag) prevent computational candidates from being exported with context suggesting wet-lab validation.

Disconfirming pass

• public_release context blocked under dry_lab_only=True
• Real candidate IDs (no toy prefix) blocked
• Invalid amino acids (X, B, Z, U) blocked
• Sequence length outside [5,100] blocked
• export_note without dry-lab claim terms blocked