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/lesson.md

@@ -61,7 +61,7 @@ From the course repository, copy the module's tests and levels into your workspa
 node tools/start-module.mjs 10 ~/my-engine
 ```
 
-It copies `tests/test_10.*` and the three levels into `levels/`. The tests load them from there.
+It copies `tests/test_10.*`, SpellGrid's cards into `cards/`, and the three levels into `levels/`. The tests load them from there.
 
 ### The harness
 
@@ -90,7 +90,7 @@ The three seams:
 2. **Hazards mark, the death step removes.** A minion that a turn destroys (a hazard, `OPEN`/`SHUT`, `X IS NOT X`) is marked pending destroy, in one Sequence, and Module 3's Death Creation Step removes it. Its Deathrattle resolves.
 3. **Grid changes reparse.** When a Sequence ends, the text its effects asked for is written (`spawnText`: "write the word on this minion's tile"), the minions that died leave the grid, and the rules are parsed again, before anything else.
 
-SpellGrid's cards, all in `course/cards/`:
+SpellGrid's cards, in `course/10-spellgrid/cards/`. `start-module 10` copies them into your `cards/` with the course's other cards; earlier modules never see them.
 
 | Card | Type | Stats | Noun | Text |
 |---|---|---|---|---|
@@ -121,6 +121,7 @@ The full statements are in `course/10-spellgrid/scenarios.md`.
 - `test_10_grid_and_card_doublers_take_max`: Predict question 1. Two, not four.
 - `test_10_hazard_feeds_death_step`: seam 2. The log is exactly `Destroyed`, `DeathPhase`, `Triggered`, `Damaged`.
 - `test_10_spawned_text_triggers_reparse`: seam 3. `BABA IS WIN` is a rule straight after the cast.
+- `test_10_targeted_spell_needs_target`: Spark without a target is an error, and the card stays in the hand.
 - `test_10_level_1_solution`, `test_10_level_2_solution`, `test_10_level_3_solution`: each level, played from a script to `won()`.
 - `test_10_level_3_naive_would_differ`: level 3 with `withNaiveAuraTiming()`. Same inputs, and the knight dies.
 
@@ -164,7 +165,7 @@ knight .      .      .      hedge  flag   #
 
 ## Build
 
-Make the nine tests pass, and keep Modules 1–9 green. The shape to aim for:
+Make the ten tests pass, and keep Modules 1–9 green. The shape to aim for:
 
 ```text
         Part I: the card engine                     Part II: the grid engine
@@ -341,10 +342,11 @@ export const END_OF_PHASE: readonly EndOfPhaseStep[] = ["deathCreation", "auraUp
 > - Baba Is You reparses "when any parsable object changes position or is destroyed" ([Rule](https://babaiswiki.fandom.com/wiki/Rule)). SpellGrid reparses after each Sequence whether or not it changed the grid. That is cheaper to reason about and gives the same rules.
 > - A minion that a conversion turns into something else (`KEG IS ROCK`) keeps its card in the reference: the object changes kind, the minion stays in play. No test or level does this, and a real design would have to decide.
 > - A minion that a card effect summons (Harvest Golem's Damaged Golem) enters play but not the grid. No SpellGrid card summons.
+> - Module 8 planned every `YOU` object's move "under the rules in force before the first". In SpellGrid, a minion destroyed during movement (`OPEN`/`SHUT`) dies in a Sequence on the spot, and seam 3 reparses when it ends, so the `YOU` objects that move after it use the new rules. The reference accepts this on purpose: a Sequence's grid changes always reparse at once, wherever the Sequence runs, and no level or test depends on the difference. A design that wanted Module 8's rule exactly would hold the reparse until movement ends.
 
 ## Expansion Drop
 
-A new trigger word: `BATTLECRY`. With it, `BATTLECRY IS DOUBLE` on the grid does what Brann Bronzebeard's "Your Battlecries trigger twice." does ([Brann Bronzebeard](https://hearthstone.wiki.gg/wiki/Brann_Bronzebeard)), the Module 4 Expansion Drop. The test plays a Town Crier ("Battlecry: Deal 1 damage to the enemy hero.", already in `course/cards/`) under the rule.
+A new trigger word: `BATTLECRY`. With it, `BATTLECRY IS DOUBLE` on the grid does what Brann Bronzebeard's "Your Battlecries trigger twice." does ([Brann Bronzebeard](https://hearthstone.wiki.gg/wiki/Brann_Bronzebeard)), the Module 4 Expansion Drop. The test plays a Town Crier ("Battlecry: Deal 1 damage to the enemy hero.", already in your `cards/`) under the rule.
 
 The constraint, as always: **do not edit anything under `src/engine/`**. The harness doesn't change either.