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/models/campaign.py

@@ -0,0 +1,83 @@
+# app/modules/prospecting/models/campaign.py
+"""
+Campaign templates and send tracking.
+
+Templates are tailored by lead type (no_website, bad_website, etc.)
+with support for multiple languages and delivery channels.
+"""
+
+import enum
+
+from sqlalchemy import (
+    Boolean,
+    Column,
+    DateTime,
+    Enum,
+    ForeignKey,
+    Integer,
+    String,
+    Text,
+)
+
+from app.core.database import Base
+from models.database.base import TimestampMixin
+
+
+class LeadType(str, enum.Enum):
+    NO_WEBSITE = "no_website"
+    BAD_WEBSITE = "bad_website"
+    GMAIL_ONLY = "gmail_only"
+    SECURITY_ISSUES = "security_issues"
+    PERFORMANCE_ISSUES = "performance_issues"
+    OUTDATED_CMS = "outdated_cms"
+    GENERAL = "general"
+
+
+class CampaignChannel(str, enum.Enum):
+    EMAIL = "email"
+    LETTER = "letter"
+    PHONE_SCRIPT = "phone_script"
+
+
+class CampaignSendStatus(str, enum.Enum):
+    DRAFT = "draft"
+    SENT = "sent"
+    DELIVERED = "delivered"
+    OPENED = "opened"
+    BOUNCED = "bounced"
+    REPLIED = "replied"
+
+
+class CampaignTemplate(Base, TimestampMixin):
+    """A reusable marketing campaign template."""
+
+    __tablename__ = "campaign_templates"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(255), nullable=False)
+    lead_type = Column(Enum(LeadType), nullable=False)
+    channel = Column(Enum(CampaignChannel), nullable=False, default=CampaignChannel.EMAIL)
+    language = Column(String(5), nullable=False, default="fr")
+
+    subject_template = Column(String(500), nullable=True)
+    body_template = Column(Text, nullable=False)
+
+    is_active = Column(Boolean, nullable=False, default=True)
+
+
+class CampaignSend(Base, TimestampMixin):
+    """A record of a campaign sent to a specific prospect."""
+
+    __tablename__ = "campaign_sends"
+
+    id = Column(Integer, primary_key=True, index=True)
+    template_id = Column(Integer, ForeignKey("campaign_templates.id", ondelete="SET NULL"), nullable=True)
+    prospect_id = Column(Integer, ForeignKey("prospects.id", ondelete="CASCADE"), nullable=False, index=True)
+
+    channel = Column(Enum(CampaignChannel), nullable=False)
+    rendered_subject = Column(String(500), nullable=True)
+    rendered_body = Column(Text, nullable=True)
+
+    status = Column(Enum(CampaignSendStatus), nullable=False, default=CampaignSendStatus.DRAFT)
+    sent_at = Column(DateTime, nullable=True)
+    sent_by_user_id = Column(Integer, nullable=True)