Curation v2 step 5: deep assessment, utility, diversified shortlist

assess.rs replaces score.rs (DEEP_INSTRUCTIONS, representative sample
with [BEGINNING]/[MIDDLE]/[END], facets, cached deep rows with --rescore
bypass), rank.rs adds the utility blend over present signals with gate
ramps and the leader-clustered shortlist (cap 2 → 3 → uncapped, protected
top-N, exploration reserve), editor.rs replaces select.rs with the §13
rendering and utility-ordered fallbacks. ScoredArticle is gone; Candidate
is the only flow type. deep_batch_size replaces score_batch_size.

Started by Codex (cut off by its usage limit mid-verification) and
finished by a Claude agent from docs/plans/curation-v2-briefs/step5.md;
reviewed against plan §12–§13.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01A1rCLQeKBgnBo3oTgHuTMe

src/main.rs

@@ -343,17 +343,11 @@ fn print_report(report: &RunReport) {
         report.counts.duplicates_merged,
         report.counts.entries_dropped,
     );
-    let unscored = if report.counts.llm_unscored > 0 {
-        format!(" ({} unscored)", report.counts.llm_unscored)
-    } else {
-        String::new()
-    };
     println!(
-        "curation: {} eligible · {} embedded · {} triaged → {} admitted → {} assessed{unscored} → {} shortlisted → {} selected",
+        "curation: {} considered → {} eligible → {} triaged → {} assessed → {} shortlisted → {} selected",
+        report.counts.articles,
         report.counts.eligible,
-        report.counts.embedded,
         report.counts.triaged,
-        report.counts.admitted,
         report.counts.assessed,
         report.counts.shortlisted,
         report.counts.selected,