docs(plans): supplier integration plan 1/5 — Foundation (schema + models + validators)

12 tasks + 3 verification gates covering:
- 5 migrations: extend projects, supplier_projects, pricing_tiers, lead_charges, supplier_sync_log
- 4 new Eloquent models + factories + Pest unit tests
- Project model extension with signal_type/sms_*/supplier_b1/b2/b3 relations
- 3 signal validators (Domain, Phone, SmsSender) with edge-case datasets
- SupplierProjectResolver service with B1+SMS guard
- Comprehensive verification gate: Larastan + squawk + pgFormatter + cspell + markdownlint + cycle-check + code-review subagent

Spec: docs/superpowers/specs/2026-05-10-supplier-integration-design.md §2, §7

cspell-words: +vashinvestor
.gitleaks.toml allowlist: +test phones for validator datasets

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

.gitleaks.toml

@@ -131,6 +131,12 @@ regexes = [
   '''(?:\+?7|8)\s?\(?XXX\)?\s?XXX[\s\-]?XX[\s\-]?XX''',
   '''79000000000''',
   '''79991234567''',
+  '''74955551212''',
+  '''89991234567''',
+  '''799912345678''',
+  '''7999123456''',
+  '''\+79991234567''',
+  '''7 999 123 45 67''',
   # 12-значные номера-маски для скриншотов и тестов
   '''[78]\(?[*X]{3}\)?\s?[*X]{3}[\s\-]?[*X]{2}[\s\-]?[*X0-9]{2}'''
 ]

cspell-words.txt

@@ -896,3 +896,4 @@ symfony
 логинится
 encrypter
 PHPSESSID
+vashinvestor