Migrate views to Odoo 17/18 syntax; fix pre-existing XML blockers

- Convert all 124 attrs="{...}" across 13 view files to direct Odoo 17/18
  attributes (invisible/readonly/required with Python expressions); prefix-domain
  OR/AND/NOT and operators handled (e.g. "(is_overdue or days_until_due > 7) and completed")
- Fix pre-existing XML errors that blocked module load on any version:
  - Replace invalid   HTML entity with   in 4 files (reports + portal)
  - Merge duplicate style= attributes (3 spots in website_intake_templates)
  - Replace 3 illegal <t t-if> embedded in class="" attributes with t-attf-class
- All 44 module XML files now parse clean

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

activeblue_familylaw/views/fl_deadline_views.xml

@@ -19,14 +19,14 @@
                     <field name="deadline_type"/>
                     <field name="due_date"/>
                     <field name="days_until_due" string="Days Left"
-                           attrs="{'invisible': [('completed', '=', True)]}"/>
+                           invisible="completed"/>
                     <field name="statute_reference" optional="show"/>
                     <field name="completed"/>
                     <field name="waived"/>
                     <field name="is_overdue" readonly="1"/>
                     <button name="action_mark_complete" string="✔ Complete"
                             type="object" icon="fa-check"
-                            attrs="{'invisible': ['|', ('completed', '=', True), ('waived', '=', True)]}"/>
+                            invisible="(completed or waived)"/>
                 </tree>
             </field>
         </record>
@@ -42,28 +42,28 @@
                     <header>
                         <button name="action_mark_complete" string="Mark Complete"
                                 type="object" class="oe_highlight"
-                                attrs="{'invisible': ['|', ('completed', '=', True), ('waived', '=', True)]}"/>
+                                invisible="(completed or waived)"/>
                         <button name="action_mark_waived" string="Mark Waived / N/A"
                                 type="object"
-                                attrs="{'invisible': ['|', ('completed', '=', True), ('waived', '=', True)]}"/>
+                                invisible="(completed or waived)"/>
                     </header>
                     <sheet>
                         <!-- Overdue alert banner -->
                         <div class="alert alert-danger" role="alert"
-                             attrs="{'invisible': [('is_overdue', '=', False)]}">
+                             invisible="not is_overdue">
                             <strong>🔴 OVERDUE</strong> — This deadline has passed.
                             Missed court deadlines can result in default judgment
                             or case dismissal. Take action immediately.
                         </div>
                         <!-- 7-day warning banner -->
                         <div class="alert alert-warning" role="alert"
-                             attrs="{'invisible': ['|', ('is_overdue', '=', True), ('days_until_due', '&gt;', 7), ('completed', '=', True)]}">
+                             invisible="(is_overdue or days_until_due &gt; 7) and completed">
                             <strong>⏰ Due in ${days_until_due} days</strong> —
                             This deadline is coming up soon.
                         </div>
                         <!-- Completed banner -->
                         <div class="alert alert-success" role="alert"
-                             attrs="{'invisible': [('completed', '=', False)]}">
+                             invisible="not completed">
                             <strong>✅ Completed</strong> on
                             <field name="completed_date" readonly="1" nolabel="1"/>
                         </div>
@@ -86,12 +86,12 @@
                             <group>
                                 <field name="completed"/>
                                 <field name="completed_date"
-                                       attrs="{'invisible': [('completed', '=', False)], 'required': [('completed', '=', True)]}"/>
+                                       invisible="not completed" required="completed"/>
                             </group>
                             <group>
                                 <field name="waived"/>
                                 <field name="calendar_event_id" readonly="1"
-                                       attrs="{'invisible': [('calendar_event_id', '=', False)]}"/>
+                                       invisible="not calendar_event_id"/>
                             </group>
                         </group>
                         <group string="Alerts Sent" groups="activeblue_familylaw.group_admin">