feat: track actual time through Today (Closes #577)

src/frontend_bundle.py

@@ -22,6 +22,7 @@ FEATURE_SOURCES = {
     "pull-workflow": ("static/pull-sheet.js", "static/review-sheet.js"),
     "push-notifications": ("static/push-notifications.js",),
     "device-setup": ("static/install-app.js", "static/mobile-device-setup.js"),
+    "today-timer": ("static/today-timer.js",),
 }
 CACHE_DECLARATION = re.compile(
     r"const CACHE = 'stackchain-dashboard-shell-(?:v\d+|[0-9a-f]{16})';"
@@ -95,7 +96,9 @@ def build_frontend(frontend_dir: Path) -> FrontendBuild:
     )
     dashboard_html = dashboard_html.replace("</head>", feature_metadata + "\n</head>")
     dashboard_html = dashboard_html.replace(
-        "</body>", f'<script src="{core.runtime_name}"></script>\n</body>'
+        "</body>",
+        f'<script src="{feature_bundles["today-timer"].runtime_name}"></script>\n'
+        f'<script src="{core.runtime_name}"></script>\n</body>',
     )
 
     worker = (frontend_dir / "service-worker.js").read_text()