fix(plating): tree-editor back button honours part-scoped context

When the Recipe Tree Editor is opened from the part-scoped Process
Composer (Sub 3), the composer already passes part_id via the
action context. The editor was ignoring it and routing onBackToList
to the generic Recipes list, stranding the user away from the part
they came from.

Capture ctx.part_id at onMounted, expose a state.fromPart flag, and
branch onBackToList: if part_id is set, open the fp.part.catalog
form; otherwise keep the current Recipes-list behaviour. XML button
label flips "Recipes" → "Part" accordingly so the user knows where
the button will take them.

fusion_plating → 19.0.6.1.0

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

fusion_plating/fusion_plating/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating',
-    'version': '19.0.6.0.0',
+    'version': '19.0.6.1.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Core plating / metal finishing ERP: facilities, processes, tanks, baths, jobs, operators.',
     'description': """

fusion_plating/fusion_plating/static/src/js/recipe_tree_editor.js

@@ -112,13 +112,23 @@ export class RecipeTreeEditor extends Component {
             addingTo: null,          // parent node id when "add" dialog is open
             newNodeName: "",
             newNodeType: "operation",
+            // True when this editor instance was opened from the part-
+            // scoped Process Composer; drives the back-button label.
+            fromPart: false,
         });
 
         this._recipeId = null;
+        // When the tree editor is opened from the part-scoped Process
+        // Composer, the composer passes `part_id` in the action context.
+        // Capture it so the back button returns to the part form instead
+        // of the generic Recipes list.
+        this._partId = null;
 
         onMounted(async () => {
             const ctx = this.props.action?.context || {};
             this._recipeId = ctx.recipe_id || null;
+            this._partId = ctx.part_id || null;
+            this.state.fromPart = !!this._partId;
             if (this._recipeId) {
                 await this.loadTree();
             }
@@ -415,6 +425,19 @@ export class RecipeTreeEditor extends Component {
     // ---- Navigation ---------------------------------------------------------
 
     onBackToList() {
+        // If the editor was opened from the part-scoped Process Composer
+        // (context carried part_id), return to that part's form instead
+        // of the generic Recipes list.
+        if (this._partId) {
+            this.action.doAction({
+                type: "ir.actions.act_window",
+                res_model: "fp.part.catalog",
+                res_id: this._partId,
+                views: [[false, "form"]],
+                target: "current",
+            });
+            return;
+        }
         this.action.doAction("fusion_plating.action_fp_process_recipe");
     }
 

fusion_plating/fusion_plating/static/src/xml/recipe_tree_editor.xml

@@ -150,8 +150,10 @@
             <div class="o_fp_re_header">
                 <button class="o_fp_re_back"
                         t-on-click="onBackToList"
-                        title="Back to recipes">
-                    <i class="fa fa-arrow-left me-2"/>Recipes
+                        t-att-title="state.fromPart ? 'Back to part' : 'Back to recipes'">
+                    <i class="fa fa-arrow-left me-2"/>
+                    <t t-if="state.fromPart">Part</t>
+                    <t t-else="">Recipes</t>
                 </button>
                 <div class="o_fp_re_header_title" t-if="state.recipe">
                     <h2 class="o_fp_re_h2 mb-0">