fix(plating): Process Composer/Editor breadcrumb accumulation

Two separate issues were stacking up on the breadcrumb trail:

1. The composer was launching the tree editor with the name
   "Process Composer — …" — identical to its own label. The
   breadcrumb trail ended up showing "Process Composer / Process
   Composer" because both pages claimed the same name. Renamed the
   tree-editor instance to "Process Editor — …" so the two pages
   read distinctly.

2. Every "Back to part" click pushed a new entry onto the
   breadcrumb stack instead of resetting. After one round-trip the
   trail looked like "… / Composer / Editor / Part"; after two it
   was "… / Composer / Editor / Part / Composer / Editor / Part".
   Added clearBreadcrumbs: true to both back paths (composer's
   backToPart and tree-editor's onBackToList) so a RETURN action
   actually resets the stack.

fusion_plating → 19.0.6.2.0
fusion_plating_configurator → 19.0.12.4.0

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_configurator/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating — Configurator',
-    'version': '19.0.12.3.0',
+    'version': '19.0.12.4.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Quotation configurator with part catalog, coating configs, and formula-based pricing engine.',
     'description': """

fusion_plating/fusion_plating_configurator/static/src/js/fp_part_process_composer.js

@@ -124,22 +124,31 @@ export class FpPartProcessComposer extends Component {
         if (!id) return;
         // The existing fp_recipe_tree_editor reads recipe_id from
         // this.props.action?.context — pass it via `context`, not `params`.
+        // Label the editor as "Process Editor …" so it doesn't collide with
+        // "Process Composer …" in the breadcrumb stack; the two pages are
+        // distinct roles and should read differently in the trail.
         this.action.doAction({
             type: "ir.actions.client",
             tag: "fp_recipe_tree_editor",
-            name: `Process Composer — ${(this.state.part && this.state.part.display) || ""}`,
+            name: `Process Editor — ${(this.state.part && this.state.part.display) || ""}`,
             context: { recipe_id: id, part_id: this.partId },
             target: "current",
         });
     }
 
     backToPart() {
+        // clearBreadcrumbs: "Back" is semantically a RETURN, not a forward
+        // navigation — reset the stack to just the part form so repeated
+        // round-trips (part → composer → editor → back) don't accumulate
+        // duplicate entries.
         this.action.doAction({
             type: "ir.actions.act_window",
             res_model: "fp.part.catalog",
             res_id: this.partId,
             views: [[false, "form"]],
             target: "current",
+        }, {
+            clearBreadcrumbs: true,
         });
     }
 }