fix(agent): describe typed historical comparison charts

Use time_comparison for current curves and historical point sets. Document shared time slots and aligned real sample timestamps; synchronize the generated chart contracts.

src/chat/answer-ui-catalog.json

@@ -310,7 +310,8 @@
           "type": "string",
           "enum": [
             "line",
-            "bar"
+            "bar",
+            "time_comparison"
           ]
         },
         "x_axis_name": {

src/frontendAction/command.ts

@@ -16,7 +16,7 @@ export function createViewSchemas(zod: typeof z = z, publication = false) {
   const chartSchema = z
     .object({
       title: z.string().max(200),
-      chart_type: z.enum(["line", "bar"]),
+      chart_type: z.enum(["line", "bar", "time_comparison"]),
       x_axis_name: z.string().max(128).optional(),
       y_axis_name: z.string().max(128).optional(),
       x_data: z.array(z.string().max(128)).min(1).max(100),

src/frontendAction/view-command.schema.json

@@ -211,7 +211,8 @@
               "type": "string",
               "enum": [
                 "line",
-                "bar"
+                "bar",
+                "time_comparison"
               ]
             },
             "x_axis_name": {

src/generated/server-api.d.ts

@@ -9600,7 +9600,7 @@ export interface components {
              * Chart Type
              * @enum {string}
              */
-            chart_type: "line" | "bar";
+            chart_type: "line" | "bar" | "time_comparison";
             /** Series */
             series: components["schemas"]["TaskSafeChartSeries"][];
             /** Title */