Fixes for M-02 to M-14, G-01 to G-14, K-02 to K-04, X-04 to X-14, not yet reviewed

Committed before review so Windows and WSL builds can start.
Each fix was tested and mutation-checked here; the codex review
of each item is still to come, so tasks/BUGS.md stays unticked.

M-02 is mid-review: round 1 findings are fixed (apps/ely-mark/src/tally.rs).
K-01 stays deferred. The ElyMark window test mark-outside.sh failed
once at its crash-recovery step in the last run; not yet looked into.

crates/ely-web-content/src/handlers.rs

@@ -349,6 +349,16 @@ wrap_life_span_handler! {
         fn on_after_created(&self, browser: Option<&mut Browser>) {
             let Some(browser) = browser.map(|b| b.clone()) else { return };
             log::info!("web: browser {} made", browser.identifier());
+            // Its view went before it came: close it, keep nothing.
+            if self.surface.lock().expect("the surface lock").closed {
+                log::info!("web: browser {} closes: its view is gone", browser.identifier());
+                crate::engine::later(move || {
+                    if let Some(host) = browser.host() {
+                        host.close_browser(true as _);
+                    }
+                });
+                return;
+            }
             adopt(&browser, self.surface.clone());
             self.surface.lock().expect("the surface lock").browser = Some(browser);
         }