feat(prospecting): add complete prospecting module for lead discovery and scoring

Migrates scanning pipeline from marketing-.lu-domains app into Orion module.
Supports digital (domain scan) and offline (manual capture) lead channels
with enrichment, scoring, campaign management, and interaction tracking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/prospecting/schemas/contact.py

@@ -0,0 +1,34 @@
+# app/modules/prospecting/schemas/contact.py
+"""Pydantic schemas for prospect contacts."""
+
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+class ProspectContactCreate(BaseModel):
+    """Schema for creating a contact."""
+
+    contact_type: str = Field(..., pattern="^(email|phone|address|social|form)$")
+    value: str = Field(..., max_length=500)
+    label: str | None = Field(None, max_length=100)
+    is_primary: bool = False
+
+
+class ProspectContactResponse(BaseModel):
+    """Schema for contact response."""
+
+    id: int
+    prospect_id: int
+    contact_type: str
+    value: str
+    label: str | None = None
+    source_url: str | None = None
+    source_element: str | None = None
+    is_validated: bool = False
+    is_primary: bool = False
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True