T02: companies + contacts + import/export + N:M + soft-delete + GDPR + FTS

- Company CRUD with soft-delete, FTS search (tsvector + GIN), filter, pagination
- Contact CRUD with N:M company linking via company_contacts
- CSV/XLSX export, CSV import with dry-run preview
- GDPR hard-delete with deletion_log
- Audit log on all mutations
- 27 new tests (24 ACs), 56 total tests pass
- Migration 0002: contacts, company_contacts, FTS search_tsv
- Fixed T01 tests: POST→201, PATCH→PUT compatibility

app/schemas/contact.py

@@ -0,0 +1,61 @@
+"""Contact schemas — create, update, read, list."""
+
+from __future__ import annotations
+
+from pydantic import BaseModel, Field
+
+
+class ContactCreate(BaseModel):
+    first_name: str = Field(..., min_length=1, max_length=100)
+    last_name: str = Field(..., min_length=1, max_length=100)
+    email: str | None = Field(None, max_length=255)
+    phone: str | None = Field(None, max_length=30)
+    mobile: str | None = Field(None, max_length=30)
+    position: str | None = Field(None, max_length=100)
+    department: str | None = Field(None, max_length=100)
+    linkedin_url: str | None = Field(None, max_length=500)
+    notes: str | None = None
+    company_ids: list[str] | None = None
+
+
+class ContactUpdate(BaseModel):
+    first_name: str | None = Field(None, min_length=1, max_length=100)
+    last_name: str | None = Field(None, min_length=1, max_length=100)
+    email: str | None = Field(None, max_length=255)
+    phone: str | None = Field(None, max_length=30)
+    mobile: str | None = Field(None, max_length=30)
+    position: str | None = Field(None, max_length=100)
+    department: str | None = Field(None, max_length=100)
+    linkedin_url: str | None = Field(None, max_length=500)
+    notes: str | None = None
+
+
+class ContactResponse(BaseModel):
+    id: str
+    first_name: str
+    last_name: str
+    email: str | None = None
+    phone: str | None = None
+    mobile: str | None = None
+    position: str | None = None
+    department: str | None = None
+    linkedin_url: str | None = None
+    notes: str | None = None
+    created_at: str | None = None
+    updated_at: str | None = None
+
+
+class ContactDetailResponse(ContactResponse):
+    companies: list[dict] = Field(default_factory=list)
+
+
+class ContactListResponse(BaseModel):
+    items: list[ContactResponse]
+    total: int
+    page: int
+    page_size: int
+
+
+class CompanyLinkRequest(BaseModel):
+    role_at_company: str | None = Field(None, max_length=100)
+    is_primary: bool = False