Refactor combatant row: single-click rename, book icon for stat blocks

Replace 250ms click timer and double-click detection with immediate
single-click rename for all combatant types. Add a BookOpen icon before
the name on bestiary rows as the dedicated stat block trigger. Remove
auto-show stat block on turn advance. Update specs to match: consistent
collapse/expand terminology, book icon requirements, no row-click stat
block behavior.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/check-lint-ignores.mjs

@@ -12,7 +12,7 @@ import { execSync } from "node:child_process";
 import { readFileSync } from "node:fs";
 
 // ── Configuration ──────────────────────────────────────────────────────
-const MAX_SOURCE_IGNORES = 12;
+const MAX_SOURCE_IGNORES = 4;
 const MAX_TEST_IGNORES = 3;
 
 /** Rule prefixes that must never be suppressed. */