fix: module 10 review round 1 (module-local SpellGrid cards, cast target check, CLI without panic hook)

- SpellGrid cards move to course/10-spellgrid/cards; start-module and
  verify-references stage course/cards plus module-local cards up to the module,
  so M5-M9 workspaces get exactly the pre-M10 card set.
- cast() rejects a chosen-target spell without a target (checkCast/checkPlay);
  new test_10_targeted_spell_needs_target.
- Rust CLI pre-validates instead of swapping the global panic hook.
- Catalog: CRIER noun; DEATHRATTLE/BATTLECRY note on lexicon vs catalog role.
- Lesson: design note on mid-movement reparse.

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

course/10-spellgrid/expansion/README.md

@@ -3,7 +3,7 @@
 The lesson's [Expansion Drop](../lesson.md#expansion-drop) beat explains the task. This file holds the scenario, the test locations and the check.
 
 - Word: `BATTLECRY`, a noun that names a trigger, as `DEATHRATTLE` does. With it, `BATTLECRY IS DOUBLE` written on the grid makes every Battlecry trigger twice, like Brann Bronzebeard ("Your Battlecries trigger twice.", Module 4).
-- Card: Town Crier, a SpellGrid card that is already in `course/cards/` (`"game": "spellgrid"`): a 1-cost 1/1 minion, noun `CRIER`, "Battlecry: Deal 1 damage to the enemy hero."
+- Card: Town Crier, a SpellGrid card that is already in `course/10-spellgrid/cards/`, the module's own cards (`"game": "spellgrid"`): a 1-cost 1/1 minion, noun `CRIER`, "Battlecry: Deal 1 damage to the enemy hero."
 - Tests: `tests/rust/test_10x.rs` and `tests/ts/test_10x.test.ts`. Copy the one for your track into your workspace's `tests/`.
 - Reference answer, two data files and no code:
   - `solution/words.json`: the Module 10 reference's `src/content/words.json` with one entry added, `{ "name": "BATTLECRY", "role": "noun" }`.

course/10-spellgrid/expansion/solution/words.json

@@ -15,6 +15,7 @@
   { "name": "MOTH", "role": "noun" },
   { "name": "SCRIBE", "role": "noun" },
   { "name": "KNIGHT", "role": "noun" },
+  { "name": "CRIER", "role": "noun" },
   { "name": "DEATHRATTLE", "role": "noun" },
   { "name": "BATTLECRY", "role": "noun" },
   { "name": "YOU", "role": "property" },