feat(notifications): Sub 6 — contact profiles + communication routing

Five new boolean flags on res.partner applied to CHILD contacts:
x_fc_receives_certs, _qc, _quotes_so, _invoices, and _is_global_contact.
Single resolver helper res.partner._fp_resolve_notification_recipients
(stream, delivery_location=None) walks location contacts first then
company contacts, returning emails for contacts that opted into the
stream (or flagged themselves global). Falls back to partner.email
when no contact opts in so existing customers keep their exact
pre-Sub-6 routing.

fp.notification.template._dispatch now maps each trigger event to a
stream (so_confirmed→quotes_so, invoice_posted→invoices, shipped→
certs, etc.) and overrides the mail_template's email_to with the
resolved list. fp.delivery passes its delivery_address_id so the
shipped/CoC email routes through location-scoped contacts when they
exist.

Partner form gets a new "Communication Routing" tab on child contact
forms with the 5 flags (hides the per-stream checkboxes when
Global Contact is on, since it overrides them).

fusion_plating_certificates → 19.0.4.0.0 (adds the flag fields)
fusion_plating_notifications → 19.0.5.0.0 (+depends certificates)

Smoke on entech: 11/11 assertions pass including per-stream routing,
delivery-location scoping, zero-flag fallback, email-less skip,
unknown-stream + global behaviour, and case-insensitive dedup.

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

fusion_plating/CLAUDE.md

@@ -371,7 +371,7 @@ rewrite code as new requirements surface. Each sub-project has its own design do
 | 3 | Default Process + Composer per part (reuse recipe tree) | **Shipped 2026-04-22** (commits ce07daa..f059348) | 2e, 2f |
 | 4 | Contract Review (optional, per-part, settings-driven QA roster, QA-005 1:1 PDF) | **Shipped 2026-04-22** | 2i |
 | 5 | Order-line fields (fp.serial registry, auto job#, coating-scoped thickness dropdown, revision picker) | **Shipped 2026-04-22** | 5, 6, Q2 |
-| 6 | Contact Profiles & Communication Routing (sub-contacts + per-location notification lists + global contacts) | Pending | client transcript A/B/C |
+| 6 | Contact Profiles & Communication Routing (per-contact flags + per-location routing + global contact; single resolver helper) | **Shipped 2026-04-22** | client transcript A/B/C |
 | 7 | IoT tuning (per-sensor polling interval + ingest rate-limit; entech seeded with 25 tanks / 50 sensors) | **Shipped 2026-04-22** | client transcript D |
 | 8 | Receiving / Inspection / QC flow restructure (split receiving vs inspection; racking crew inspects, not receiver) | Pending | client transcript E |
 | ∞ | First-off / last-off QC | Deferred | client transcript F |