Add Lead -> Request -> Order funnel redesign (Phase 2)

New leads entity (own numbering VTH{yy}-{seq}, 2-stage funnel, converts
into inquiries) sitting ahead of the existing Request/Order pipeline.
Request funnel expanded from 4 to 6 statuses (kp_preparation -> kp_response
-> negotiation -> signing -> converted/declined) and Order funnel from 4
to 11 (new -> ... -> completed/declined), matching the stage names/fields/
decline-reasons from the flowcharts. Decline now always requires a reason
(+ free-text detail for "other"), reused across all three entities via one
DeclineWithReason component. Added shared deal-reference fields (Incoterms,
payment terms, carrier1-3, insurance company, customs broker) to both
inquiries and orders, carried over on conversion. Added a minimal outbound
SMTP capability (reusing the existing mailbox credentials) so order
status changes can best-effort email the client, matching the stages the
diagrams call out. Per-stage informational panels (requirements + transition
criteria) shown on each entity's detail page — structure only, no SLA-timer
automation yet (explicitly deferred, per this session's scoping).

Fixed a drizzle-kit migration-generation bug by hand: the generated
INSERT...SELECT for the inquiries table rebuild referenced brand-new
columns on the pre-migration source table, which don't exist there yet.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Gh2UXUQUVBWroWEnn1FLFG

package.json

@@ -23,6 +23,7 @@
     "lucide-react": "^0.545.0",
     "mailparser": "^3.9.15",
     "next": "16.2.12",
+    "nodemailer": "^9.1.0",
     "pdf-parse": "^2.4.5",
     "pizzip": "^3.2.0",
     "react": "19.2.4",
@@ -36,6 +37,7 @@
     "@types/better-sqlite3": "^7.6.13",
     "@types/mailparser": "^3.4.6",
     "@types/node": "^20",
+    "@types/nodemailer": "^8.0.1",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "@types/web-push": "^3.6.4",