Build in the review tool.

src/main.zig

@@ -13,6 +13,7 @@ const Settings = @import("Settings.zig");
 const Window = @import("Window.zig");
 const appearance = @import("appearance.zig");
 const icons = @import("icons.zig");
+const review = @import("review.zig");
 
 /// libghostty-vt logs unimplemented sequences at debug level, which is very
 /// chatty against a real shell. Keep the app's own warnings and errors.
@@ -29,6 +30,11 @@ pub fn main() u8 {
     // of it. A no-op if the app never got as far as activating.
     defer Settings.deinit();
 
+    // Also before the allocator, and after the window: the review server owns
+    // threads, and stopping it waits for the ones still inside a request rather
+    // than freeing the memory they are reading. A no-op if it never started.
+    defer review.deinit();
+
     // Non-unique so every launch is its own process. The default GApplication
     // behavior hands off to an already-running instance over D-Bus, which for
     // a terminal means a second launch silently does nothing visible here and
@@ -55,6 +61,12 @@ fn onActivate(app: *adw.Application, _: ?*anyopaque) callconv(.c) void {
     // for one by name.
     icons.init();
 
+    // Before the window, because every tab is announced to the server as it is
+    // created and every terminal is handed the endpoint of the tab it opens in.
+    // Started unconditionally rather than on the first review pane, so an agent
+    // running in a tab has a `PLAYPEN_REVIEW_URL` from the moment it starts.
+    review.init(gpa.allocator());
+
     const window = Window.create(gpa.allocator(), app) catch |err| {
         std.log.err("failed to create window: {s}", .{@errorName(err)});
         return;