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/migrations/versions/012_add_scan_progress.py

@@ -0,0 +1,58 @@
+"""Add scan progress tracking
+
+Revision ID: 012
+Revises: 011
+Create Date: 2024-01-01 00:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '012'
+down_revision = '011'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Add progress tracking columns to scans table
+    op.add_column('scans', sa.Column('current_phase', sa.String(50), nullable=True,
+                  comment='Current scan phase: ping, tcp_scan, udp_scan, service_detection, http_analysis'))
+    op.add_column('scans', sa.Column('total_ips', sa.Integer(), nullable=True,
+                  comment='Total number of IPs to scan'))
+    op.add_column('scans', sa.Column('completed_ips', sa.Integer(), nullable=True, default=0,
+                  comment='Number of IPs completed in current phase'))
+
+    # Create scan_progress table for per-IP progress tracking
+    op.create_table(
+        'scan_progress',
+        sa.Column('id', sa.Integer(), primary_key=True, autoincrement=True),
+        sa.Column('scan_id', sa.Integer(), sa.ForeignKey('scans.id'), nullable=False, index=True),
+        sa.Column('ip_address', sa.String(45), nullable=False, comment='IP address being scanned'),
+        sa.Column('site_name', sa.String(255), nullable=True, comment='Site name this IP belongs to'),
+        sa.Column('phase', sa.String(50), nullable=False,
+                  comment='Phase: ping, tcp_scan, udp_scan, service_detection, http_analysis'),
+        sa.Column('status', sa.String(20), nullable=False, default='pending',
+                  comment='pending, in_progress, completed, failed'),
+        sa.Column('ping_result', sa.Boolean(), nullable=True, comment='Ping response result'),
+        sa.Column('tcp_ports', sa.Text(), nullable=True, comment='JSON array of discovered TCP ports'),
+        sa.Column('udp_ports', sa.Text(), nullable=True, comment='JSON array of discovered UDP ports'),
+        sa.Column('services', sa.Text(), nullable=True, comment='JSON array of detected services'),
+        sa.Column('created_at', sa.DateTime(), nullable=False, server_default=sa.func.now(),
+                  comment='Entry creation time'),
+        sa.Column('updated_at', sa.DateTime(), nullable=False, server_default=sa.func.now(),
+                  onupdate=sa.func.now(), comment='Last update time'),
+        sa.UniqueConstraint('scan_id', 'ip_address', name='uix_scan_progress_ip')
+    )
+
+
+def downgrade():
+    # Drop scan_progress table
+    op.drop_table('scan_progress')
+
+    # Remove progress tracking columns from scans table
+    op.drop_column('scans', 'completed_ips')
+    op.drop_column('scans', 'total_ips')
+    op.drop_column('scans', 'current_phase')