i18n(sleep): add namespace JSONs (de/en/es/fr/it)

Adds list_view sub-namespace covering log CTA, last-night card (label +
edit + interruptions), week chart heading, 5 stat labels (avg duration/
quality, sleep debt, consistency, streak), heatmap title interpolation,
hygiene-correlation card, log/hygiene action buttons.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/mana/apps/web/src/lib/i18n/locales/sleep/de.json

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+{
+	"list_view": {
+		"cta_question": "Wie hast du geschlafen?",
+		"cta_action": "Jetzt loggen",
+		"label_last_night": "Letzte Nacht",
+		"action_edit": "Bearbeiten",
+		"interruptions": "{n}× aufgewacht",
+		"section_week": "Diese Woche",
+		"stat_avg_duration": "Ø Dauer (7T)",
+		"stat_avg_quality": "Ø Qualität",
+		"stat_sleep_debt": "Schlafschuld",
+		"stat_consistency": "Konsistenz",
+		"stat_streak": "Streak",
+		"section_quality": "Qualität (30 Tage)",
+		"heatmap_cell_title": "{date}: {label}",
+		"section_hygiene_corr": "Schlafhygiene-Effekt",
+		"corr_with": "Mit Hygiene (≥70%):",
+		"corr_without": "Ohne:",
+		"action_log_sleep": "Schlaf loggen",
+		"action_hygiene_check": "Hygiene-Check"
+	}
+}

apps/mana/apps/web/src/lib/i18n/locales/sleep/en.json

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+{
+	"list_view": {
+		"cta_question": "How did you sleep?",
+		"cta_action": "Log now",
+		"label_last_night": "Last night",
+		"action_edit": "Edit",
+		"interruptions": "{n}× woke up",
+		"section_week": "This week",
+		"stat_avg_duration": "Avg duration (7d)",
+		"stat_avg_quality": "Avg quality",
+		"stat_sleep_debt": "Sleep debt",
+		"stat_consistency": "Consistency",
+		"stat_streak": "Streak",
+		"section_quality": "Quality (30 days)",
+		"heatmap_cell_title": "{date}: {label}",
+		"section_hygiene_corr": "Sleep hygiene effect",
+		"corr_with": "With hygiene (≥70%):",
+		"corr_without": "Without:",
+		"action_log_sleep": "Log sleep",
+		"action_hygiene_check": "Hygiene check"
+	}
+}

apps/mana/apps/web/src/lib/i18n/locales/sleep/es.json

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+{
+	"list_view": {
+		"cta_question": "¿Cómo dormiste?",
+		"cta_action": "Registrar ahora",
+		"label_last_night": "Anoche",
+		"action_edit": "Editar",
+		"interruptions": "{n}× despertares",
+		"section_week": "Esta semana",
+		"stat_avg_duration": "Duración media (7d)",
+		"stat_avg_quality": "Calidad media",
+		"stat_sleep_debt": "Deuda de sueño",
+		"stat_consistency": "Consistencia",
+		"stat_streak": "Racha",
+		"section_quality": "Calidad (30 días)",
+		"heatmap_cell_title": "{date}: {label}",
+		"section_hygiene_corr": "Efecto higiene del sueño",
+		"corr_with": "Con higiene (≥70%):",
+		"corr_without": "Sin:",
+		"action_log_sleep": "Registrar sueño",
+		"action_hygiene_check": "Check higiene"
+	}
+}

apps/mana/apps/web/src/lib/i18n/locales/sleep/fr.json

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+{
+	"list_view": {
+		"cta_question": "Comment as-tu dormi ?",
+		"cta_action": "Enregistrer maintenant",
+		"label_last_night": "Dernière nuit",
+		"action_edit": "Modifier",
+		"interruptions": "{n}× réveils",
+		"section_week": "Cette semaine",
+		"stat_avg_duration": "Durée moy. (7j)",
+		"stat_avg_quality": "Qualité moy.",
+		"stat_sleep_debt": "Dette de sommeil",
+		"stat_consistency": "Régularité",
+		"stat_streak": "Série",
+		"section_quality": "Qualité (30 jours)",
+		"heatmap_cell_title": "{date} : {label}",
+		"section_hygiene_corr": "Effet hygiène du sommeil",
+		"corr_with": "Avec hygiène (≥70 %) :",
+		"corr_without": "Sans :",
+		"action_log_sleep": "Enregistrer le sommeil",
+		"action_hygiene_check": "Check hygiène"
+	}
+}

apps/mana/apps/web/src/lib/i18n/locales/sleep/it.json

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+{
+	"list_view": {
+		"cta_question": "Come hai dormito?",
+		"cta_action": "Registra ora",
+		"label_last_night": "Ultima notte",
+		"action_edit": "Modifica",
+		"interruptions": "{n}× risvegli",
+		"section_week": "Questa settimana",
+		"stat_avg_duration": "Durata media (7g)",
+		"stat_avg_quality": "Qualità media",
+		"stat_sleep_debt": "Debito di sonno",
+		"stat_consistency": "Costanza",
+		"stat_streak": "Serie",
+		"section_quality": "Qualità (30 giorni)",
+		"heatmap_cell_title": "{date}: {label}",
+		"section_hygiene_corr": "Effetto igiene del sonno",
+		"corr_with": "Con igiene (≥70%):",
+		"corr_without": "Senza:",
+		"action_log_sleep": "Registra sonno",
+		"action_hygiene_check": "Check igiene"
+	}
+}