Add real-time scan progress tracking

- Add ScanProgress model and progress fields to Scan model
- Implement progress callback in scanner to report phase completion
- Update scan_job to write per-IP results to database during execution
- Add /api/scans/<id>/progress endpoint for progress polling
- Add progress section to scan detail page with live updates
- Progress table shows current phase, completion bar, and per-IP results
- Poll every 3 seconds during active scans
- Sort IPs numerically for proper ordering
- Add database migration for new tables/columns

app/web/models.py

@@ -59,6 +59,11 @@ class Scan(Base):
     completed_at = Column(DateTime, nullable=True, comment="Scan execution completion time")
     error_message = Column(Text, nullable=True, comment="Error message if scan failed")
 
+    # Progress tracking fields
+    current_phase = Column(String(50), nullable=True, comment="Current scan phase: ping, tcp_scan, udp_scan, service_detection, http_analysis")
+    total_ips = Column(Integer, nullable=True, comment="Total number of IPs to scan")
+    completed_ips = Column(Integer, nullable=True, default=0, comment="Number of IPs completed in current phase")
+
     # Relationships
     sites = relationship('ScanSite', back_populates='scan', cascade='all, delete-orphan')
     ips = relationship('ScanIP', back_populates='scan', cascade='all, delete-orphan')
@@ -70,6 +75,7 @@ class Scan(Base):
     schedule = relationship('Schedule', back_populates='scans')
     config = relationship('ScanConfig', back_populates='scans')
     site_associations = relationship('ScanSiteAssociation', back_populates='scan', cascade='all, delete-orphan')
+    progress_entries = relationship('ScanProgress', back_populates='scan', cascade='all, delete-orphan')
 
     def __repr__(self):
         return f"<Scan(id={self.id}, title='{self.title}', status='{self.status}')>"
@@ -244,6 +250,43 @@ class ScanTLSVersion(Base):
         return f"<ScanTLSVersion(id={self.id}, tls_version='{self.tls_version}', supported={self.supported})>"
 
 
+class ScanProgress(Base):
+    """
+    Real-time progress tracking for individual IPs during scan execution.
+
+    Stores intermediate results as they become available, allowing users to
+    see progress and results before the full scan completes.
+    """
+    __tablename__ = 'scan_progress'
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    scan_id = Column(Integer, ForeignKey('scans.id'), nullable=False, index=True)
+    ip_address = Column(String(45), nullable=False, comment="IP address being scanned")
+    site_name = Column(String(255), nullable=True, comment="Site name this IP belongs to")
+    phase = Column(String(50), nullable=False, comment="Phase: ping, tcp_scan, udp_scan, service_detection, http_analysis")
+    status = Column(String(20), nullable=False, default='pending', comment="pending, in_progress, completed, failed")
+
+    # Results data (stored as JSON)
+    ping_result = Column(Boolean, nullable=True, comment="Ping response result")
+    tcp_ports = Column(Text, nullable=True, comment="JSON array of discovered TCP ports")
+    udp_ports = Column(Text, nullable=True, comment="JSON array of discovered UDP ports")
+    services = Column(Text, nullable=True, comment="JSON array of detected services")
+
+    created_at = Column(DateTime, nullable=False, default=datetime.utcnow, comment="Entry creation time")
+    updated_at = Column(DateTime, nullable=False, default=datetime.utcnow, onupdate=datetime.utcnow, comment="Last update time")
+
+    # Relationships
+    scan = relationship('Scan', back_populates='progress_entries')
+
+    # Index for efficient lookups
+    __table_args__ = (
+        UniqueConstraint('scan_id', 'ip_address', name='uix_scan_progress_ip'),
+    )
+
+    def __repr__(self):
+        return f"<ScanProgress(id={self.id}, ip='{self.ip_address}', phase='{self.phase}', status='{self.status}')>"
+
+
 # ============================================================================
 # Reusable Site Definition Tables
 # ============================================================================