[IMP] dms: OWL UX refinements (phase 2 preview)

Follow-up to OCA#475 phase 1 (the minimal-viable 19.0 [MIG]). Opens on
the ledoent fork against the phase 1 branch so reviewers can preview the
delta on top of OCA#475 before it lands.

- **Breadcrumb modernisation**: replace `path_owl.xml`'s inline-style
  `<a oe_form_uri>` + `<span style="display: inline">` pattern with
  Odoo 19's `<ol class="o_breadcrumb breadcrumb"><li class="breadcrumb-item">`
  Bootstrap idiom. Final segment uses `class="breadcrumb-item active"`
  with `aria-current="page"` per Bootstrap a11y guidance.
- **Restore `filter_domain` on `dms_category.xml`** search view —
  `filter_domain="['|', ('name', 'ilike', self), ('parent_id', 'child_of', raw_value)]"`
  was removed in OCA#475 and re-introduces the 18.0 UX of filtering by parent
  category subtree when typing a parent's name. The bare 19.0 default
  `ilike` on name lost that behaviour. (Tag search left as default — 18.0's
  filter was equivalent to 19.0's default for that field.)

Originally this PR also rewired the kanban `buttonTemplate` from
`dms.KanbanButtons` to the orphan `dms.FileKanbanView.Buttons` template,
but that template uses invalid OWL inheritance syntax
(`<div role="toolbar" position="inside">` instead of `<xpath ...>`) AND
references controller hooks (`uploadFileInputRef`, `onFileInputChange`)
that don't exist on the controller. Reverted; phase 1's classic
`dms.KanbanButtons` template stays in place (it's now self-contained
without `t-inherit` since 19.0's `web.KanbanView.Buttons` is empty).

Deferred to a later round: JS dead-code audit (inconclusive — core 19.0
`LinkPreview` has no native `imageUrl` getter, so our patches may still be
load-bearing), coverage closure, and a proper kanban UX modernisation
once `dms.FileKanbanView.Buttons` is fixed or replaced.

Signed-off-by: Daniel Kendall <dkendall@ledoweb.com>

Author: dnplkndll

dms/static/src/js/fields/path_json/path_owl.xml

@@ -6,25 +6,27 @@
 <templates xml:space="preserve" id="template">
     <t t-name="dms.DmsPathField">
         <t t-set="path_length" t-value="data.length - 1" />
-        <t t-foreach="data" t-as="elem" t-key="elem_index" style="display: inline">
-            <t t-if="elem_index !== path_length">
-                <span style="display: inline" t-if="elem_index !== 0">/</span>
-                <a
-                    class="oe_form_uri"
-                    data-model="dms.directory"
-                    t-att-data-id="elem.id"
-                    href="#"
-                    t-on-click.prevent="(ev) => this._onNodeClicked(ev)"
-                >
-                    <t t-esc="elem.name" />
-                </a>
+        <ol class="o_breadcrumb breadcrumb mb-0">
+            <t t-foreach="data" t-as="elem" t-key="elem_index">
+                <t t-if="elem_index !== path_length">
+                    <li class="breadcrumb-item">
+                        <a
+                            class="oe_form_uri"
+                            data-model="dms.directory"
+                            t-att-data-id="elem.id"
+                            href="#"
+                            t-on-click.prevent="(ev) => this._onNodeClicked(ev)"
+                        >
+                            <t t-esc="elem.name" />
+                        </a>
+                    </li>
+                </t>
+                <t t-else="">
+                    <li class="breadcrumb-item active" aria-current="page">
+                        <t t-esc="elem.name" />
+                    </li>
+                </t>
             </t>
-            <t t-else="">
-                <span style="display: inline">/</span>
-                <span style="display: inline">
-                    <t t-esc="elem.name" />
-                </span>
-            </t>
-        </t>
+        </ol>
     </t>
 </templates>

dms/views/dms_category.xml

@@ -12,7 +12,10 @@
         <field name="model">dms.category</field>
         <field name="arch" type="xml">
             <search string="Categories">
-                <field name="name" />
+                <field
+                    name="name"
+                    filter_domain="['|', ('name', 'ilike', self), ('parent_id', 'child_of', raw_value)]"
+                />
                 <filter
                     string="All"
                     name="all"