diff --git a/docs/superpowers/tests/2026-04-22-sub3-smoke.py b/docs/superpowers/tests/2026-04-22-sub3-smoke.py
new file mode 100644
index 00000000..2fd068f0
--- /dev/null
+++ b/docs/superpowers/tests/2026-04-22-sub3-smoke.py
@@ -0,0 +1,145 @@
+"""Sub 3 — end-to-end smoke."""
+import sys
+env = self.env
+
+def ok(msg): print(f"  [OK]  {msg}")
+def fail(msg): print(f"  [FAIL] {msg}"); sys.exit(1)
+def hdr(t): print(f"\n=== {t} ===")
+
+hdr("1. Schema presence")
+Node = env['fusion.plating.process.node']
+for f in ('part_catalog_id', 'cloned_from_id', 'treatment_uom'):
+    if f not in Node._fields:
+        fail(f"Node missing {f}")
+ok("all 3 new fields present on fusion.plating.process.node")
+Part = env['fp.part.catalog']
+if 'default_process_id' not in Part._fields:
+    fail("fp.part.catalog missing default_process_id")
+ok("default_process_id present on fp.part.catalog")
+
+hdr("2. opt_in_out label rename")
+sel = dict(Node._fields['opt_in_out'].selection)
+expected = {
+    'disabled': 'Always Included',
+    'opt_out': 'Included by Default',
+    'opt_in':  'Excluded by Default',
+}
+for k, v in expected.items():
+    if sel.get(k) != v:
+        fail(f"opt_in_out[{k}] = {sel.get(k)!r}, expected {v!r}")
+ok("opt_in_out Selection labels renamed correctly, keys unchanged")
+
+hdr("3. General Processing seed is a shared template")
+gp = env['fusion.plating.process.node'].search([
+    ('code', '=', 'GENERAL_PROCESSING'),
+], limit=1)
+if not gp: fail("General Processing template not found")
+if gp.part_catalog_id: fail(f"General Processing should be shared (part_catalog_id NULL), got {gp.part_catalog_id}")
+if gp.node_type != 'recipe': fail(f"expected recipe, got {gp.node_type}")
+ok(f"General Processing seed: {gp.name} (id={gp.id}, shared template)")
+
+hdr("4. Controller endpoints registered")
+from odoo.addons.fusion_plating_configurator.controllers.fp_part_composer_controller import FpPartComposerController
+routes = []
+for m in ('state', 'templates', 'load_template'):
+    meth = getattr(FpPartComposerController, m, None)
+    if meth is None:
+        fail(f"method {m} missing")
+    route_attr = getattr(meth, 'original_routing', None) or getattr(meth, 'routing', None)
+    if not route_attr:
+        fail(f"method {m} has no routing metadata")
+    routes.append((m, route_attr.get('routes')))
+ok(f"3 routes registered: {routes}")
+
+hdr("5. Clone subtree end-to-end")
+from odoo.addons.fusion_plating_configurator.controllers.fp_part_composer_controller import _clone_subtree
+part = env['fp.part.catalog'].search([('part_number', '!=', False)], limit=1)
+if not part: fail("no part with part_number to test")
+# Clean any prior test clones for this part
+env['fusion.plating.process.node'].search([
+    ('part_catalog_id', '=', part.id),
+]).unlink()
+template_nodes_before = env['fusion.plating.process.node'].search_count([
+    ('id', 'child_of', gp.id),
+])
+ok(f"testing with part {part.display_name}, template has {template_nodes_before} nodes")
+
+new_root = _clone_subtree(env, gp, part, parent=False)
+cloned = env['fusion.plating.process.node'].search_count([
+    ('part_catalog_id', '=', part.id),
+])
+if cloned != template_nodes_before:
+    fail(f"clone count mismatch: template={template_nodes_before}, cloned={cloned}")
+if new_root.part_catalog_id.id != part.id:
+    fail(f"new root part_catalog_id={new_root.part_catalog_id.id}, expected {part.id}")
+if new_root.cloned_from_id.id != gp.id:
+    fail(f"cloned_from_id={new_root.cloned_from_id.id}, expected {gp.id}")
+if new_root.node_type != 'recipe':
+    fail(f"cloned root should be recipe, got {new_root.node_type}")
+ok(f"cloned {cloned} nodes, root={new_root.name}, cloned_from_id points at template")
+
+part.default_process_id = new_root.id
+env.cr.commit()
+part.invalidate_recordset()
+if part.default_process_id.id != new_root.id:
+    fail("default_process_id not set on part")
+ok(f"part.default_process_id = {part.default_process_id.name}")
+
+hdr("6. Walker resolution via _resolve_mo_process_tree")
+# Build a fresh MO linked to this part via SO
+Product = env['product.product']
+product = Product.search([('active', '=', True)], limit=1)
+so_vals = {
+    'partner_id': part.partner_id.id,
+    'order_line': [(0, 0, {
+        'product_id': product.id,
+        'product_uom_qty': 1,
+        'price_unit': 50.0,
+        'x_fc_part_catalog_id': part.id,
+        'name': 'Sub3 smoke line',
+        'x_fc_internal_description': 'internal',
+    })],
+}
+if 'x_fc_po_number' in env['sale.order']._fields:
+    so_vals['x_fc_po_number'] = 'SUB3-SMOKE'
+so = env['sale.order'].create(so_vals)
+mo = env['mrp.production'].create({
+    'product_id': product.id,
+    'product_qty': 1,
+    'origin': so.name,
+})
+root = mo._resolve_mo_process_tree()
+if not root:
+    fail("resolver returned no root")
+if root.id != new_root.id:
+    fail(f"resolver returned {root.id}, expected part's clone {new_root.id}")
+ok(f"resolver correctly returned part's cloned tree (root={root.name})")
+
+hdr("7. Fallback path — MO with no linked part")
+orphan = env['mrp.production'].create({
+    'product_id': product.id,
+    'product_qty': 1,
+})
+legacy_root = orphan._resolve_mo_process_tree()
+# Should fall back to x_fc_recipe_id (which is likely NULL for a bare MO)
+# We just need it to not crash and return False/None rather than erroring
+if legacy_root and legacy_root.part_catalog_id:
+    fail(f"orphan MO should not get a part-owned tree, got {legacy_root.name}")
+ok("resolver falls through cleanly for orphan MO")
+
+hdr("8. Templates query returns only shared recipes")
+tpl_recipes = env['fusion.plating.process.node'].search([
+    ('part_catalog_id', '=', False),
+    ('node_type', '=', 'recipe'),
+    ('active', '=', True),
+])
+part_owned = env['fusion.plating.process.node'].search([
+    ('part_catalog_id', '=', part.id),
+])
+if not tpl_recipes:
+    fail("no shared templates found")
+if any(n.part_catalog_id for n in tpl_recipes):
+    fail("shared-template query returned part-owned nodes")
+ok(f"shared templates: {len(tpl_recipes)}, part-owned for test part: {len(part_owned)}")
+
+hdr("SUB 3 SMOKE COMPLETE")
diff --git a/docs/superpowers/tests/2026-04-22-sub3-verify.sql b/docs/superpowers/tests/2026-04-22-sub3-verify.sql
new file mode 100644
index 00000000..2ea8a082
--- /dev/null
+++ b/docs/superpowers/tests/2026-04-22-sub3-verify.sql
@@ -0,0 +1,24 @@
+-- Sub 3 Phase A verification
+\echo '--- Process node new fields present ---'
+SELECT column_name, data_type FROM information_schema.columns
+WHERE table_name='fusion_plating_process_node'
+  AND column_name IN ('part_catalog_id','cloned_from_id','treatment_uom')
+ORDER BY column_name;
+
+\echo '--- fp.part.catalog.default_process_id present ---'
+SELECT column_name, data_type FROM information_schema.columns
+WHERE table_name='fp_part_catalog' AND column_name='default_process_id';
+
+\echo '--- General Processing seed installed ---'
+SELECT id, name, code, node_type, part_catalog_id FROM fusion_plating_process_node
+WHERE code='GEN-PROC' OR name='General Processing';
+
+\echo '--- All existing nodes have part_catalog_id NULL (shared templates) ---'
+SELECT COUNT(*) FILTER (WHERE part_catalog_id IS NULL) AS shared_templates,
+       COUNT(*) FILTER (WHERE part_catalog_id IS NOT NULL) AS part_owned
+FROM fusion_plating_process_node;
+
+\echo '--- Module versions on entech ---'
+SELECT name, latest_version FROM ir_module_module
+WHERE name IN ('fusion_plating','fusion_plating_configurator','fusion_plating_bridge_mrp')
+ORDER BY name;
diff --git a/fusion_plating/CLAUDE.md b/fusion_plating/CLAUDE.md
index b5cfdef9..93cd7d48 100644
--- a/fusion_plating/CLAUDE.md
+++ b/fusion_plating/CLAUDE.md
@@ -368,7 +368,7 @@ rewrite code as new requirements surface. Each sub-project has its own design do
 |---|---|---|---|
 | 1 | Direct Order Wizard fix (no auto-confirm/auto-email) | **Shipped 2026-04-22** (commit afd8bae+) | Gap 1 |
 | 2 | Part Data Model Overhaul (part#/rev required, dual descriptions, per-part cert requirement, SKU→Part Number on customer docs) | **Shipped 2026-04-22** (commits 868b418..afd8bae) | 2b, 2c, 2d, 4 |
-| 3 | Default Process + Composer per part (reuse recipe tree) | Pending | 2e, 2f |
+| 3 | Default Process + Composer per part (reuse recipe tree) | **Shipped 2026-04-22** (commits ce07daa..f059348) | 2e, 2f |
 | 4 | Contract Review two-portion workflow (QA Assistant + QA Manager; pre-production gate) | Pending | 2i |
 | 5 | Order-line fields (serial, job#, thickness dropdown, revision picker) | Pending | 5, 6, Q2 |
 | 6 | Contact Profiles & Communication Routing (sub-contacts + per-location notification lists + global contacts) | Pending | client transcript A/B/C |