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_fee_waiver_views.xml

@@ -10,26 +10,26 @@
                     <header>
                         <button name="action_submit" string="Submit to Clerk"
                                 type="object" class="oe_highlight"
-                                attrs="{'invisible': [('state', '!=', 'draft')]}"/>
+                                invisible="state != 'draft'"/>
                         <button name="action_approve" string="Approved"
                                 type="object"
-                                attrs="{'invisible': [('state', '!=', 'submitted')]}"
+                                invisible="state != 'submitted'"
                                 groups="activeblue_familylaw.group_admin"/>
                         <button name="action_deny" string="Denied"
                                 type="object"
-                                attrs="{'invisible': [('state', '!=', 'submitted')]}"
+                                invisible="state != 'submitted'"
                                 groups="activeblue_familylaw.group_admin"/>
                         <field name="state" widget="statusbar"/>
                     </header>
                     <sheet>
                         <div class="alert alert-success" role="alert"
-                             attrs="{'invisible': [('eligible', '=', False)]}">
+                             invisible="not eligible">
                             <strong>✅ ELIGIBLE</strong> — <field name="eligibility_note" readonly="1" nolabel="1"/>
                             <br/>This applicant may also qualify for a
                             <strong>free county mediator</strong> under FL 44.108.
                         </div>
                         <div class="alert alert-warning" role="alert"
-                             attrs="{'invisible': [('eligible', '=', True)]}">
+                             invisible="eligible">
                             <field name="eligibility_note" readonly="1" nolabel="1"/>
                         </div>
                         <group>
@@ -51,11 +51,11 @@
                             <field name="mediator_fee_waiver_eligible" readonly="1"/>
                         </group>
                         <group string="Outcome"
-                               attrs="{'invisible': [('state', 'in', ['draft', 'submitted'])]}">
+                               invisible="state in ['draft', 'submitted']">
                             <field name="approval_date"
-                                   attrs="{'invisible': [('state', '!=', 'approved')]}"/>
+                                   invisible="state != 'approved'"/>
                             <field name="denial_reason"
-                                   attrs="{'invisible': [('state', '!=', 'denied')]}"/>
+                                   invisible="state != 'denied'"/>
                         </group>
                         <field name="notes"/>
                     </sheet>