feat(invoicing): module scaffold + strategy defaults + account hold

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

fusion-plating/fusion_plating_invoicing/models/__init__.py

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+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+# Part of the Fusion Plating product family.
+
+from . import fp_invoice_strategy_default
+from . import res_partner
+from . import sale_order
+from . import account_move

fusion-plating/fusion_plating_invoicing/models/account_move.py

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+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+# Part of the Fusion Plating product family.
+# Placeholder — implemented in a later task.

fusion-plating/fusion_plating_invoicing/models/fp_invoice_strategy_default.py

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+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+# Part of the Fusion Plating product family.
+
+from odoo import fields, models
+
+
+class FpInvoiceStrategyDefault(models.Model):
+    """Customer-level default invoice strategy.
+
+    When a new sale order is created for this customer, the invoice
+    strategy and deposit percentage auto-fill from this record.
+    """
+    _name = 'fp.invoice.strategy.default'
+    _description = 'Fusion Plating — Invoice Strategy Default'
+    _order = 'partner_id'
+
+    partner_id = fields.Many2one(
+        'res.partner', string='Customer', required=True, ondelete='cascade',
+        domain="[('customer_rank', '>', 0)]",
+    )
+    default_strategy = fields.Selection(
+        [('deposit', 'Deposit'), ('progress', 'Progress Billing'),
+         ('net_terms', 'Net Terms'), ('cod_prepay', 'COD / Prepay')],
+        string='Default Strategy', required=True,
+    )
+    default_deposit_percent = fields.Float(
+        string='Deposit %', help='Deposit percentage if strategy is Deposit (e.g. 50.0).',
+    )
+    payment_term_id = fields.Many2one(
+        'account.payment.term', string='Payment Terms',
+    )
+    notes = fields.Text(string='Notes')
+
+    _sql_constraints = [
+        ('fp_invoice_strategy_partner_uniq', 'unique(partner_id)',
+         'Only one invoice strategy default per customer.'),
+    ]

fusion-plating/fusion_plating_invoicing/models/res_partner.py

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+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+# Part of the Fusion Plating product family.
+
+from odoo import fields, models
+
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    x_fc_account_hold = fields.Boolean(
+        string='Account Hold', tracking=True,
+        help='When active, blocks SO confirmation, invoicing, and shipping.',
+    )
+    x_fc_account_hold_reason = fields.Text(string='Hold Reason')
+    x_fc_account_hold_date = fields.Datetime(
+        string='Hold Date', help='When the hold was placed.',
+    )
+    x_fc_account_hold_by_id = fields.Many2one(
+        'res.users', string='Hold Placed By',
+    )

fusion-plating/fusion_plating_invoicing/models/sale_order.py

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+# -*- coding: utf-8 -*-
+# Copyright 2026 Nexa Systems Inc.
+# License OPL-1 (Odoo Proprietary License v1.0)
+# Part of the Fusion Plating product family.
+# Placeholder — implemented in a later task.