Bump dashboards: bar, icon, forecast and clock widget types

Plumbing only: the widget-type literal and its dtype table on both sides,
the regenerated client, a curated lucide map and four stubs the renderers
are wired to. Also a latching switch and a segmented dropdown, both a
`style` on the control that already publishes and reads back, plus the
option editor a dropdown never had.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HTsT1isxUjw5gtkJk8WhuA

backend/app/flow/dashboards.py

@@ -42,6 +42,10 @@ WidgetType = Literal[
     "markdown",
     "agenda",
     "notification",
+    "bar",
+    "icon",
+    "forecast",
+    "clock",
     # Input
     "button",
     "switch",
@@ -66,6 +70,10 @@ WIDGET_DTYPES: dict[str, set[str]] = {
     "switch": {"bool"},
     "agenda": {"list"},
     "notification": {"record"},
+    "bar": {"float", "int"},
+    "forecast": {"list"},
+    # An icon maps weather strings, bool hints and numbers alike, and a clock
+    # binds nothing at all, so neither has a row to be held to.
 }
 
 
@@ -124,7 +132,8 @@ class WidgetDef(BaseModel):
                 if series.get("message")
             ]
         name = self.config.get("message")
-        return [str(name)] if name else []
+        inner = self.config.get("inner")  # only a bar nests a second reading
+        return [str(value) for value in (name, inner) if value]
 
     @property
     def target(self) -> str:
@@ -161,7 +170,7 @@ class WidgetDef(BaseModel):
                 str(series.get("dtype") or "")
                 for series in self.config.get("series") or []
             ]
-        return [str(self.config.get("dtype") or "")]
+        return [str(self.config.get(key) or "") for key in ("dtype", "inner_dtype")]
 
     @model_validator(mode="after")
     def _check_binding(self) -> WidgetDef: