Simplify the public event and CPU API

Applications now need far less ceremony: hello.c is a 20-line loop that
handles REFRESH, CLOSE and QUIT and draws into the surface's own pixels.

- Fold GEOMETRY, STATE and FOCUS into one WINDOW event carrying size,
  scale and state; unchanged values send nothing.
- Guarantee REFRESH once a window has a size and after every resize,
  never at size zero.
- Merge DROP_HOVER into DROP with over/leave/data actions and give drag
  and drop actions enums.
- Keep event strings valid until the next wait and drop
  yasl_event_release; empty or failed waits report NONE.
- Replace copy-in presentation with a lent pixel buffer:
  yasl_cpu_pixels and yasl_cpu_present.
- Remove yasl_poll_event, yasl_cpu_read_pixels, unused event fields and
  comments that restated names.
- Wayland: resize floating windows in request_size instead of reporting
  it unsupported, and stop marking new GPU surfaces as Vulkan so
  yasl_vulkan_create_surface no longer fails with NATIVE_WINDOW_IN_USE.

Also includes the in-progress public API refactor that was uncommitted
in the tree (removal of the app/loop layer, new surface, GL and Vulkan
entry points).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 10 insertions, 10 deletions

diff --git a/tests/common/test_selection.c b/tests/common/test_selection.c
index d1b3eb8..9772923 100644
--- a/tests/common/test_selection.c
+++ b/tests/common/test_selection.c
@@ -1,5 +1,5 @@
 #define _POSIX_C_SOURCE 200809L
-#include "yasl/yasl.h"
+#include "common/types.h"
 
 #include <assert.h>
 #include <errno.h>
@@ -7,27 +7,27 @@
 
 int main(void)
 {
-    struct yasl_display_spec spec = {.backend = (enum yasl_backend)999};
+    struct yasl_private_display_spec spec = {.backend = (enum yasl_private_backend)999};
     errno = 0;
-    assert(!yasl_display_open(NULL, &spec));
+    assert(!yasl_private_display_open(NULL, &spec));
     assert(errno == EINVAL);
-    assert(yasl_display_backend(NULL) == YASL_BACKEND_AUTO);
+    assert(yasl_private_display_backend(NULL) == YASL_PRIVATE_BACKEND_AUTO);
 #if !YASL_HAS_COCOA
-    spec.backend = YASL_BACKEND_COCOA;
+    spec.backend = YASL_PRIVATE_BACKEND_COCOA;
     errno = 0;
-    assert(!yasl_display_open(NULL, &spec));
+    assert(!yasl_private_display_open(NULL, &spec));
     assert(errno == ENOSYS);
 #endif
 #if !YASL_HAS_WAYLAND
-    spec.backend = YASL_BACKEND_WAYLAND;
+    spec.backend = YASL_PRIVATE_BACKEND_WAYLAND;
     errno = 0;
-    assert(!yasl_display_open(NULL, &spec));
+    assert(!yasl_private_display_open(NULL, &spec));
     assert(errno == ENOSYS);
 #endif
 #if !YASL_HAS_X11
-    spec.backend = YASL_BACKEND_X11;
+    spec.backend = YASL_PRIVATE_BACKEND_X11;
     errno = 0;
-    assert(!yasl_display_open(NULL, &spec));
+    assert(!yasl_private_display_open(NULL, &spec));
     assert(errno == ENOSYS);
 #endif
     return 0;