docs: fix doc_lazy_continuation across the workspace

Eighteen markdown list items in module- and item-doc comments had
continuation lines that were not indented to align under the item
text, so rustdoc rendered them as separate paragraphs and broke the
list. Corrected the indentation (and, at two sites where a general
wrap-up sentence followed a sublist, separated it with a blank doc
line so it does not mis-attach to the last item). Doc whitespace only;
no prose reworded, no code changed.

Workspace clippy is now warning-clean.

crates/ail/src/main.rs

@@ -2195,6 +2195,7 @@ fn locate_str_runtime() -> Result<PathBuf> {
 ///   1. the directory containing the running `ail` binary, walked up
 ///      (handles `target/release/ail` and `target/debug/ail`).
 ///   2. the current working directory, walked up.
+///
 /// On miss, fails with `err_msg` verbatim — callers pass the
 /// byte-identical message their flag expects.
 fn locate_runtime_file(filename: &str, err_msg: &str) -> Result<PathBuf> {

crates/ailang-check/src/mono.rs

@@ -30,6 +30,7 @@
 //!        a fully-concrete substitution; the source body is taken
 //!        directly and rigid-var-substituted into a
 //!        `<name>__<type>…` fn.
+//!
 //!   The loop re-walks bodies added by the previous round, which is
 //!   what closes it over chained class-method calls (e.g.
 //!   `Eq.ne x y = not (eq x y)`). Targets are deduplicated within a