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.

apps/ely-mark/src/page.rs

@@ -75,6 +75,11 @@ pub fn open(
     ));
 }
 
+/// The disk's text in place; reports start a new generation.
+pub fn refresh(view: &WebView, markdown: &str, load: u64) {
+    view.run_js(&format!("ely.refresh({}, {load})", json!(markdown)));
+}
+
 /// The same text in another mode; pending edits go first.
 pub fn switch(view: &WebView, mode: Mode) {
     view.run_js(&format!("ely.mode('{}')", mode.name()));