change how --load-resources are provided from CLI

src/Config.zig

@@ -211,26 +211,10 @@ fn caPathValidator(
     }
 }
 
-// Sub-resources the browser actually requests. A comma-separated list so
-// more can be opted into individually as they land; only `image` fetches
-// today.
 pub const LoadResources = packed struct(u1) {
     image: bool = false,
 };
 
-fn loadResourcesValidator(_: Allocator, args: *std.process.Args.Iterator, target: *LoadResources) !void {
-    const resources = args.next() orelse return error.MissingArgument;
-
-    var it = std.mem.splitScalar(u8, resources, ',');
-    while (it.next()) |resource| {
-        inline for (@typeInfo(LoadResources).@"struct".fields) |field| {
-            if (std.mem.eql(u8, field.name, resource)) {
-                @field(target, field.name) = true;
-            }
-        }
-    }
-}
-
 /// Common CLI args.
 const CommonOptions = .{
     .{ .name = "obey_robots", .type = bool },
@@ -265,12 +249,7 @@ const CommonOptions = .{
     .{ .name = "disable_subframes", .type = bool },
     .{ .name = "disable_workers", .type = bool },
     .{ .name = "enable_external_stylesheets", .type = bool },
-    .{
-        .name = "load_resources",
-        .type = LoadResources,
-        .default = LoadResources{},
-        .validator = loadResourcesValidator,
-    },
+    .{ .name = "load_resources", .type = LoadResources, .default = LoadResources{} },
     .{ .name = "v8_flags_unsafe", .type = ?[]const u8 },
     .{ .name = "v8_max_heap_mb", .type = ?u32 },
     .{ .name = "watchdog_ms", .type = ?u32 },

src/help.zon

@@ -348,19 +348,14 @@
     \\          contribute to computed styles (and therefore to visibility checks like
     \\          display, visibility, opacity, pointer-events).
     \\          Defaults to false, except in agent mode with an LLM, where it is on.
-    \\  --load-resources <LIST>
-    \\          Comma-separated list of sub-resources to actually request.
-    \\          Defaults to empty, i.e. none of them.
-    \\          Allowed values: "image".
-    \\          "image" requests <img> sources so that load/error events reflect the
-    \\          real HTTP status, instead of load firing for any non-empty src. The
-    \\          request stops at the end of the response headers, so only a small
-    \\          image's body is ever transferred, and images are never decoded:
-    \\          naturalWidth/naturalHeight stay 0 either way.
-    \\          Requested images delay the window load event, and therefore
-    \\          --wait-until load. They are fetched at a lower priority than
-    \\          scripts, stylesheets and XHR, and never take a connection one of
-    \\          those is waiting for.
+    \\  --load-resources <RESOURCE>
+    \\          Sub-resource to actually request. Can be passed multiple times.
+    \\          Defaults to requesting none of them.
+    \\          Allowed values:
+    \\              image     <img> sources, so that load/error reflects the real
+    \\                        HTTP status. Only the response headers are read;
+    \\                        images are never decoded, so naturalWidth and
+    \\                        naturalHeight stay 0. Delays the window load event.
     \\  --http-cache-dir <PATH>
     \\          Directory used as a filesystem cache for network resources. Omitting
     \\          this disables caching.