feat: module 10 spellgrid

SpellGrid capstone: Part I's card engine and Part II's grid engine joined at
three seams (rules -> aura data, hazard victims -> one destroy Sequence,
Sequence end -> write text, remove the dead, reparse). Three levels with
scripted solutions, a naive-timing test via a harness-only hook that
reverses the END_OF_PHASE list, CLIs in both tracks, the BATTLECRY IS DOUBLE
Expansion Drop, SpellGrid cards and words in course/cards and the catalog,
level schema cards/hand, and tools staging/copying of module levels.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

course/10-spellgrid/reference/rust/src/bin/spellgrid.rs

@@ -0,0 +1,21 @@
+//! SpellGrid on the command line. See `src/cli.rs`.
+//!
+//! `cargo run --bin spellgrid -- levels/l1-double-tap.json`
+
+use std::io::{self, BufReader};
+
+use engine::cli::{run, Outcome};
+
+fn main() {
+    let Some(path) = std::env::args().nth(1) else {
+        eprintln!("usage: cargo run --bin spellgrid -- <level.json>");
+        std::process::exit(2);
+    };
+    let level = std::fs::read_to_string(&path).unwrap_or_else(|e| {
+        eprintln!("cannot read {path}: {e}");
+        std::process::exit(2);
+    });
+    let input = Box::new(BufReader::new(io::stdin()));
+    let outcome = run(&level, input, Box::new(io::stdout()));
+    std::process::exit(if outcome == Outcome::Won { 0 } else { 1 });
+}