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- B1: Add Credit Note wizard path was blocked because invoice_origin has copy=False and the wizard doesn't set fp_from_so_invoice. Now the validator allows reversals when reversed_entry_id points at a customer-facing move that itself went through the validator at original creation time. account.move._fp_parent_sale_order also walks self.reversed_entry_id._fp_parent_sale_order so the credit note inherits the parent number (CN-<parent>). - Bug 1: sale.order.unlink() now blocks deletion when x_fc_parent_number is set (matches spec §6.2). Draft quotes remain freely deletable per Odoo standard. Applies to all users including admins. - Bug 2: out_receipt added to CUSTOMER_TYPES so POS-style receipts hit the same SO-flow gate as out_invoice / out_refund. - C1: WO grouping key changed from recipe.id to (recipe.id, part.id, coating.id). Bundling lines with different parts under one WO put first_line's part_number on the CoC header — silent compliance mis-attestation. Now distinct parts always get distinct WOs even when they share a recipe. - C3: SQL whitelist (_FP_COUNTER_FIELD_RE) on _fp_assign_parent_name's interpolated counter field name. No user input today; defence in depth for future subclasses that might read the name from context. Verified on entech: parent=30017, credit note = CN-30017, multi-part SO produces 2 WOs (one per part), confirmed-SO unlink blocked, out_receipt blocked, whitelist regex enforced. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>