Migrate web app from Python/FastAPI to Node.js/TypeScript

Replace the entire Python/FastAPI backend with a Node.js/TypeScript stack:
- Framework: Hono + @hono/node-server
- Templates: Nunjucks (.njk) replacing Jinja2 (.html)
- ORM: Drizzle ORM with mysql2 (same MariaDB schema, no migrations needed)
- Sessions: hono-sessions with CookieStore
- CSS: Pico CSS v2 replacing Bootstrap 5 (Bootstrap Icons CDN kept)
- Dev: tsx watch; Prod: tsc + node dist/index.js

Original Python app preserved in web-python/ as backup.
Updated Dockerfile.web and docker-compose.yml for Node.js deployment.

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

web-python/migrations/versions/f6a7b8c9d0e1_evotor_webhook_token_flow.py

@@ -0,0 +1,53 @@
+"""evotor webhook token flow: add evotor_user_id, make user_id nullable
+
+Revision ID: f6a7b8c9d0e1
+Revises: e5f6a7b8c9d0
+Branch Labels: None
+Depends On: None
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = 'f6a7b8c9d0e1'
+down_revision = 'e5f6a7b8c9d0'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+
+    # Check existing columns
+    columns = [row[0] for row in conn.execute(sa.text(
+        "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS "
+        "WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'evotor_connections'"
+    ))]
+
+    if 'evotor_user_id' not in columns:
+        op.add_column('evotor_connections',
+            sa.Column('evotor_user_id', sa.String(255), nullable=True))
+
+    # Check existing indexes
+    indexes = [row[2] for row in conn.execute(sa.text(
+        "SHOW INDEX FROM evotor_connections"
+    ))]
+
+    if 'uq_evotor_connections_evotor_user_id' not in indexes:
+        op.create_unique_constraint('uq_evotor_connections_evotor_user_id',
+            'evotor_connections', ['evotor_user_id'])
+
+    if 'ix_evotor_connections_evotor_user_id' not in indexes:
+        op.create_index('ix_evotor_connections_evotor_user_id',
+            'evotor_connections', ['evotor_user_id'])
+
+    op.alter_column('evotor_connections', 'user_id',
+        existing_type=sa.Integer(), nullable=True)
+
+
+def downgrade() -> None:
+    op.alter_column('evotor_connections', 'user_id',
+        existing_type=sa.Integer(), nullable=False)
+    op.drop_index('ix_evotor_connections_evotor_user_id', 'evotor_connections')
+    op.drop_constraint('uq_evotor_connections_evotor_user_id', 'evotor_connections')
+    op.drop_column('evotor_connections', 'evotor_user_id')