Add pinnable new-tab targets to the tab row and sidebar

Any new-tab target (new agent, terminal, browser, or a terminal profile)
can be pinned as a quick-launch button. Pins are global client app state
(persisted), not daemon config, so the same set shows on every workspace;
profile pins resolve per host and are dropped where that profile is absent.

The sidebar mirror launches via a navigate-then-launch intent store rather
than calling the create handlers directly: terminal creation only works in
the mounted/focused workspace, so the sidebar requests the launch and the
workspace screen consumes it on focus.

packages/app/src/workspace-pins/run.ts

@@ -0,0 +1,38 @@
+import type { TerminalProfile } from "@getpaseo/protocol/messages";
+import type { TerminalProfileInput } from "@/screens/workspace/terminals/use-workspace-terminals";
+import type { PinnedTabTarget } from "@/workspace-pins/target";
+
+export interface TabTargetHandlers {
+  createDraft: () => void;
+  createTerminal: () => void;
+  createBrowser: () => void;
+  createTerminalWithProfile: (profile: TerminalProfileInput) => void;
+}
+
+export function runPinnedTabTarget(
+  target: PinnedTabTarget,
+  profiles: readonly TerminalProfile[],
+  handlers: TabTargetHandlers,
+): void {
+  if (target.kind === "draft") {
+    handlers.createDraft();
+    return;
+  }
+  if (target.kind === "terminal") {
+    handlers.createTerminal();
+    return;
+  }
+  if (target.kind === "browser") {
+    handlers.createBrowser();
+    return;
+  }
+  const profile = profiles.find((entry) => entry.id === target.profileId);
+  if (!profile) {
+    return;
+  }
+  handlers.createTerminalWithProfile({
+    name: profile.name,
+    command: profile.command,
+    args: profile.args,
+  });
+}