feat(numbering): wire CoC/RCV/DLV/PU into parent-numbered mixin + rename counters

Per-model counter fields on sale.order renamed to x_fc_pn_*_count
to avoid collision with pre-existing compute fields of the same
short name in bridge_mrp / receiving / configurator (silent
compute-override was suppressing the storage). 4 child models
(fp.certificate, fp.receiving, fusion.plating.delivery,
fusion.plating.pickup.request) now derive names as PFX-<parent>
with -NN suffix from the 2nd onward.

fusion.plating.pickup.request gains a sale_order_id field
(optional) so pickups created against an SO get parent-derived
names, while standalone pickups (pre-SO) fall back to PU/YYYY/NNNN.

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

fusion_plating/fusion_plating_jobs/controllers/record_inputs.py

@@ -88,16 +88,30 @@ class FpRecordInputsController(http.Controller):
         if node and node.description:
             instructions_html = node.description
 
+        # Recipe root id — surfaced so the dialog's "Edit Recipe" shortcut
+        # opens the Simple Editor on the EXACT recipe variant this job is
+        # reading from. Avoids the trap where the operator edits a sibling
+        # variant (e.g. the template, while the job runs the part-specific
+        # clone) and wonders why their min/max never appears.
+        recipe_root_id = False
+        if node:
+            root = node
+            while root.parent_id:
+                root = root.parent_id
+            recipe_root_id = root.id
+
         return {
             'ok': True,
             'step': {
                 'id': step.id,
                 'name': step.name,
+                'recipe_node_id': node.id if node else False,
             },
             'job': {
                 'id': step.job_id.id,
                 'name': step.job_id.name,
             },
+            'recipe_root_id': recipe_root_id,
             'prompts': prompts,
             'user_initials': user_initials or '',
             'instructions_html': instructions_html or '',