Add route heat colouring and detailed running analytics

migrations/versions/bdbac89195a7_preserve_recorded_running_metrics.py

@@ -0,0 +1,32 @@
+"""Preserve recorded running metrics
+
+Revision ID: bdbac89195a7
+Revises: 342a45f4132a
+Create Date: 2026-10-01 18:30:09.945360
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'bdbac89195a7'
+down_revision = '342a45f4132a'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('activity', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('metrics', sa.JSON(), server_default='{}', nullable=False))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('activity', schema=None) as batch_op:
+        batch_op.drop_column('metrics')
+
+    # ### end Alembic commands ###