Add conflict-of-interest check engine; gate stage advancement at Intake

- New fl.conflict.check model: screens petitioner/respondent/party_ids names
  against parties on other open cases (exact partner match + difflib fuzzy
  match at 0.85 threshold); skips folded/closed stages
- Runs automatically as the first action in fl.case.create; logs conflicts to
  chatter with matched-case detail and never silently passes
- fl.case gains conflict_check_passed/conflict_check_id/conflict_check_ids;
  write() blocks advancing stage_id past Intake until the check passes
- Admin-only action_override requires a written justification, stamps user/date,
  and flips conflict_check_passed True with a chatter audit entry
- Add conflict check form/tree/search views, action, Cases sub-menu item,
  case form banner + Run Conflict Check button, and Kanban conflict badge
- ACL entries for fl.conflict.check (admin full, paralegal no-delete)
- Finish Claude migration cleanup in fl_analysis.py (model_used default,
  docstring/help text)
- Add .gitignore for Python artifacts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

activeblue_familylaw/models/fl_case.py

@@ -1,4 +1,5 @@
 from odoo import _, api, fields, models
+from odoo.exceptions import UserError
 from dateutil.relativedelta import relativedelta
 
 
@@ -86,6 +87,23 @@ class FlCase(models.Model):
     )
     active = fields.Boolean(default=True)
 
+    # ══════════════════════════════════════════════════════════════════════
+    # CONFLICT OF INTEREST
+    # ══════════════════════════════════════════════════════════════════════
+
+    conflict_check_passed = fields.Boolean(
+        string='Conflict Check Passed',
+        default=False, tracking=True,
+        help='Case cannot advance past Intake until the conflict-of-interest '
+             'check passes (or is overridden by an administrator).'
+    )
+    conflict_check_id = fields.Many2one(
+        'fl.conflict.check', string='Latest Conflict Check', readonly=True
+    )
+    conflict_check_ids = fields.One2many(
+        'fl.conflict.check', 'case_id', string='Conflict Checks'
+    )
+
     # ══════════════════════════════════════════════════════════════════════
     # PARTIES
     # ══════════════════════════════════════════════════════════════════════
@@ -794,6 +812,8 @@ class FlCase(models.Model):
                 ) or _('New')
         records = super().create(vals_list)
         for record in records:
+            # 0. Conflict-of-interest screen — runs before any other action
+            self.env['fl.conflict.check'].run_check(record)
             # 1. Create Odoo project for task management
             record._create_case_project()
             # 2. Generate deadlines if filing date already set
@@ -807,6 +827,20 @@ class FlCase(models.Model):
         return records
 
     def write(self, vals):
+        # Block advancing past Intake until conflict check has passed
+        if vals.get('stage_id'):
+            new_stage = self.env['fl.case.stage'].browse(vals['stage_id'])
+            intake = self.env.ref(
+                'activeblue_familylaw.fl_stage_intake', raise_if_not_found=False
+            )
+            if intake and new_stage.sequence > intake.sequence:
+                for rec in self:
+                    if not rec.conflict_check_passed:
+                        raise UserError(_(
+                            "Cannot advance case %s past Intake: the "
+                            "conflict-of-interest check has not passed. Resolve or "
+                            "override the conflict before changing the stage."
+                        ) % rec.name)
         result = super().write(vals)
         # Recalculate service-anchored deadlines when service_date is set/changed
         if 'service_date' in vals:
@@ -1090,3 +1124,15 @@ class FlCase(models.Model):
             'target': 'new',
             'context': {'default_case_id': self.id},
         }
+
+    def action_run_conflict_check(self):
+        self.ensure_one()
+        check = self.env['fl.conflict.check'].run_check(self)
+        return {
+            'type': 'ir.actions.act_window',
+            'name': 'Conflict Check Result',
+            'res_model': 'fl.conflict.check',
+            'res_id': check.id,
+            'view_mode': 'form',
+            'target': 'new',
+        }