Fix the one CI-mandatory 1.97 lint: clippy::some_filter in deepnsm

CI clippy went red on ONE error, and it corrects something I said
earlier in this arc: I reported 1.97.1 as adding "no new lint surface".
It does — clippy::some_filter is new in 1.97, and this is the proof. My
claim was true only of the crates I had scoped, which is a narrower
statement than the one I made.

Why the -p sweep never saw it: deepnsm is workspace-EXCLUDED, so no
-p run reaches it; CI checks it by --manifest-path. Reading the CI
config rather than guessing also showed the gate is TIERED —
lance-graph-contract, deepnsm and deepnsm-v2 are MANDATORY while
lance-graph and bgz-tensor are advisory — so only the mandatory set had
to move. Verified all three mandatory manifests: 0 errors; deepnsm
tests 217 + 4 + 8 + 2 green.

The fix is simpler than clippy's own suggestion and equivalent:

    animate.or(Some(false).filter(|_| animate.is_none()))

is just animate.or(Some(false)). Option::or already discards its
argument when self is Some, so the filter's predicate could only ever be
true on the None branch — where the filter is a no-op. Clippy proposed
animate.is_none().then_some(false), which is also correct but keeps a
condition that cannot change the result.

Recorded, NOT fixed (deliberately): the ungated/advisory excluded crates
carry pre-existing clippy debt — bgz17 27, lance-graph-codec-research
55, bgz-tensor 10 (advisory) — mostly needless_range_loop. CI does not
gate bgz17 or codec-research at all, and the workflow's own comments
already describe ~91 pre-existing lance-graph violations as debt to be
paid down over time. Fixing 92 unrelated lints inside a dependency-bump
PR would bury the bump; they belong in their own pass.

Author: claude

crates/deepnsm/examples/spo_anaphora_nibble.rs

@@ -155,7 +155,11 @@ fn resolve(stream: &[&str], pos: usize, p: Pron) -> Option<usize> {
         nf.plural == plural && want_anim.is_none_or(|a| nf.animate == a)
     };
     // pass 1: strict animacy (it -> inanimate)
-    let want = animate.or(Some(false).filter(|_| animate.is_none()));
+    // Keep the pronoun's own animacy when it has one; an unmarked pronoun
+    // (`it`) starts as inanimate. Same value as the previous
+    // `.or(Some(false).filter(|_| animate.is_none()))`, without evaluating a
+    // filter whose predicate can only be true on the None branch.
+    let want = animate.or(Some(false));
     for &k in &cands {
         if let Some(nf) = noun_features(stream[k]) {
             if agrees(&nf, want) {