Require capitalization and final punctuation again; add a UI reminder

Follow-up to the previous commit: testing further showed a missing
initial capital also fails validation, which raised the real
question (CLAUDE.md: ask rather than decide alone on an ambiguous
pedagogical point) — is sentence-initial capitalization and final
punctuation something the audio should convey, or a general writing
convention the child applies regardless of what they hear?

Decided: a general convention, like in a real classroom dictée. So
both stay required, and the terminal-punctuation tolerance added in
the previous commit is reverted (DictationAnalyzer back to comparing
the text as-is).

Since the audio still can't vocalize either rule, the child needs to
be told some other way: added a permanent reminder label to the
dictation scene ("N'oublie pas : une majuscule au début de la phrase
et un point à la fin !"), sourced from data/localization/fr.json.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

tests/correction/test_dictation_analyzer.gd

@@ -67,21 +67,13 @@ func test_normalizes_before_comparing() -> void:
     assert_true(result.is_correct)
 
 
-## L'audio provisoire ne fait entendre aucune ponctuation (voir
-## docs/specs/decisions.md, point 19/20) : l'omettre n'est pas une erreur.
-func test_missing_terminal_punctuation_is_still_correct() -> void:
+## Majuscule initiale et point final sont des conventions generales d'ecriture
+## (voir docs/specs/decisions.md, point 22), exigees comme n'importe quel
+## autre mot : l'enfant en est informe par un rappel affiche, pas par une
+## tolerance a la correction.
+func test_missing_terminal_punctuation_is_an_error() -> void:
     var result := DictationAnalyzer.analyze(dictation, "Les petits chats dorment")
-    assert_true(result.is_correct)
-
-
-func test_different_terminal_punctuation_is_still_correct() -> void:
-    var result := DictationAnalyzer.analyze(dictation, "Les petits chats dorment!")
-    assert_true(result.is_correct)
-
-
-func test_terminal_punctuation_tolerance_does_not_hide_a_real_error_on_the_last_word() -> void:
-    var result := DictationAnalyzer.analyze(dictation, "Les petits chats dorme")
     assert_false(result.is_correct)
     assert_eq(result.errors.size(), 1)
-    assert_eq(result.errors[0]["found"], "dorme")
+    assert_eq(result.errors[0]["found"], "dorment")
     assert_eq(result.errors[0]["expected"], "dorment.")

tests/exercises/test_exercise_host_dictation.gd

@@ -1,7 +1,8 @@
 extends GutTest
-## Reproduction d'un bug signale manuellement via exercise_host : la dictee
-## "Les petits chats dorment." tapee exactement comme entendue n'etait pas
-## validee comme correcte.
+## Reproduction de deux retours de test manuel via exercise_host, sur la
+## dictee "Les petits chats dorment." (voir docs/specs/decisions.md, points
+## 21 et 22) : la reponse exacte doit valider, et la majuscule/le point final
+## restent exiges (conventions generales d'ecriture, pas une tolerance).
 
 var _profile_id: String = ""
 
@@ -30,10 +31,7 @@ func test_exact_target_text_is_validated_as_correct() -> void:
     assert_eq(_feedback_title(host), UIText.get_text("feedback_panel.correct_title"))
 
 
-## "J'entends parfaitement mais ne valide pas" : l'audio ne fait entendre
-## aucune ponctuation, donc l'enfant qui ecrit exactement ce qu'il entend
-## (sans le point final) doit tout de meme etre valide.
-func test_missing_final_period_is_still_validated_as_correct() -> void:
+func test_missing_final_period_is_not_validated_as_correct() -> void:
     var host: Control = await _ready_host()
     var exercise_scene: Control = host.get_node("%ExerciseContainer").get_child(0)
 
@@ -41,7 +39,7 @@ func test_missing_final_period_is_still_validated_as_correct() -> void:
     exercise_scene.get_node("%ValidateButton").pressed.emit()
     await wait_process_frames(1)
 
-    assert_eq(_feedback_title(host), UIText.get_text("feedback_panel.correct_title"))
+    assert_eq(_feedback_title(host), UIText.get_text("feedback_panel.incorrect_title"))
 
 
 func _ready_host() -> Control: