Split crates/x11/src/lib.rs (925 lines) into platform/

Pure reorganization, no behavior change - verified by diffing the
function-name and struct/trait-name sets before/after (both identical)
plus a full cargo test pass. lib.rs is now a thin shim (mod
declaration + pub use), same pattern crates/config used, since a crate
root can't itself become a directory. platform/mod.rs keeps the atom
table, Frame/X11Platform's struct definitions, the small free-function
helpers (err, modmask_for_keycode_in_mod_slots, rgb_to_pixel), and the
ClonedForRender trait+impl. The rest splits by concern:

- connect.rs: connect, keymap/modifier helpers, grab_keybindings.
- window.rs: manage_new_window and the other per-client lifecycle
  methods (window_title/class, supports_wm_delete, unmanage,
  frame_for).
- events.rs: handle_event, the X11 event-dispatch loop.
- actions.rs: raise_and_focus/request_close/sync_geometry/
  redraw_all_decorations.
- trait_impl.rs: `impl Platform for X11Platform` - named to avoid
  clippy's module_inception lint, since the containing directory is
  already named `platform`.
- tests.rs: unsplit, same reasoning as every other split this pass.

A handful of X11Platform methods (frame_for, manage_new_window,
unmanage, raise_and_focus, request_close, sync_geometry,
keycode_to_keysym, modifiers_from_state, handle_event) went from
private to pub(super): called across what are now sibling submodules,
which Rust's privacy model doesn't let see each other's private items.

0 files changed, 0 insertions, 0 deletions