Streamline sidebar usage and stacked sheet interactions (#5805)

* feat(app): streamline sidebar usage and stacked sheets

* fix(app): restore compact sidebar navigation clicks

The close button container emitted box-none through Unistyles as invalid CSS and intercepted New workspace clicks. Let React Native apply click-through behavior at the view boundary. Keep the import journey on its existing New workspace screen and assert only the visible transcript.

* fix(app): cap menu sheets at eighty percent height

Keep long sidebar usage reports recognizably sheet-sized while allowing the content to scroll. Short menu sheets retain dynamic sizing.

packages/protocol/src/messages.ts

@@ -6189,6 +6189,13 @@ export const ProviderUsageStatusSchema = z.enum(["available", "unavailable", "er
 export const ProviderUsageWindowSchema = z.object({
   id: z.string(),
   label: z.string(),
+  /**
+   * A few characters naming the window where space is tight, e.g. "5h" or "wk". An empty string
+   * shows the percent alone; leaving it out shows `label`.
+   */
+  shortLabel: z.string().optional(),
+  /** Shown in the usage summary until the user pins windows of their own. */
+  summary: z.boolean().optional(),
   usedPct: z.number().nullable().optional(),
   remainingPct: z.number().nullable().optional(),
   resetsAt: z.string().nullable().optional(),