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/migrations/script.py.mako

@@ -1,26 +0,0 @@
-"""${message}
-
-Revision ID: ${up_revision}
-Revises: ${down_revision | comma,n}
-Create Date: ${create_date}
-
-"""
-from typing import Sequence, Union
-
-from alembic import op
-import sqlalchemy as sa
-${imports if imports else ""}
-
-# revision identifiers, used by Alembic.
-revision: str = ${repr(up_revision)}
-down_revision: Union[str, None] = ${repr(down_revision)}
-branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
-depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
-
-
-def upgrade() -> None:
-    ${upgrades if upgrades else "pass"}
-
-
-def downgrade() -> None:
-    ${downgrades if downgrades else "pass"}