i18n: add Portuguese (pt) translation

Adds a complete pt locale covering all five translation groups
(status, recommendation, subtitle, radon, editor) and registers
'Português' in the language selector dropdown.

The loader strips regional codes, so pt matches both pt-BR and pt-PT
automatically.

Co-authored-by: Matheus <matheus@Matheuss-Mac-mini.local>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 3 people

air-quality-card.js

@@ -128,6 +128,13 @@ const TRANSLATIONS = {
     subtitle: { air_quality_healthy: 'Luftqualität liegt innerhalb gesunder Grenzen', co_danger: 'CO bei {value} ppm — gefährliche Werte erkannt', co_danger_unknown: 'Gefährliche CO-Werte', co_warning: 'CO bei {value} ppm — alle Fenster sofort öffnen', co_warning_unknown: 'Hohe CO-Werte', co_elevated: 'CO bei {value} ppm — Belüftung verbessern', co_elevated_unknown: 'CO-Werte erhöht', purifier_pm25: 'PM2.5 bei {value} μg/m³ - Luft filtern', purifier_pm10: 'PM10 bei {value} μg/m³ - Luft filtern', purifier_generic: 'Partikelwerte erhöht', consider_purifier_pm10: 'PM10 bei {value} μg/m³', open_window_co2: 'CO₂ bei {value} ppm - Frischluft benötigt', purifier_ventilate: 'CO₂: {co2} ppm, PM2.5: {pm25} μg/m³', ventilate_now_co2: 'CO₂ bei {value} ppm - kann Konzentration beeinträchtigen', ventilate_formaldehyde: 'HCHO bei {value} ppb - Lüftung erforderlich', ventilate_formaldehyde_unknown: 'Formaldehydwerte erhöht', ventilate_vocs: 'tVOC bei {value} ppb - Lüftung erforderlich', ventilate_vocs_unknown: 'VOC-Werte erhöht', too_dry: 'Luftfeuchtigkeit bei {value}% - Luftbefeuchter empfohlen', too_humid: 'Luftfeuchtigkeit bei {value}% - Lüften', consider_ventilating_co2: 'CO₂ bei {value} ppm', consider_ventilating_pm25: 'PM2.5 bei {value} μg/m³', consider_ventilating_generic: 'Leicht erhöhte Werte', keep_closed_outdoor_pm25_poor: 'Außen PM2.5 bei {value} μg/m³ - schlechte Außenluft', keep_closed_outdoor_pm25: 'Außen PM2.5 bei {value} μg/m³ - schlechter als innen', keep_closed_outdoor_co2: 'Außen CO₂ bei {value} ppm - schlechter als innen', keep_closed_generic: 'Außenluft ist schlechter als Innenluft' },
     radon: { advisory_danger: 'Radon hoch — Minderung erforderlich', advisory_warning: 'Radon über EPA-Eingreifrichtwert', advisory_info: 'Radon — genau beobachten', short_term: 'Kurzfristig', long_term: 'Langfristig' },
     editor: { name: 'Kartenname', co2_entity: 'CO₂-Sensor', pm25_entity: 'PM2.5-Sensor', humidity_entity: 'Feuchtigkeitssensor', temperature_entity: 'Temperatursensor', radon_entity: 'Radon-Sensor', radon_longterm_entity: 'Radon-Sensor (Langzeit)', co_entity: 'CO-Sensor (Kohlenmonoxid)', hcho_entity: 'Formaldehyd-Sensor (HCHO)', tvoc_entity: 'tVOC-Sensor', pm4_entity: 'PM4-Sensor', nox_entity: 'NOx-Sensor', pm1_entity: 'PM1-Sensor', pm10_entity: 'PM10-Sensor', pm03_entity: 'PM0.3-Sensor', outdoor_co2_entity: 'Außen CO₂', outdoor_pm25_entity: 'Außen PM2.5', outdoor_humidity_entity: 'Außen Luftfeuchtigkeit', outdoor_temperature_entity: 'Außen Temperatur', outdoor_co_entity: 'Außen CO', outdoor_hcho_entity: 'Außen HCHO', outdoor_tvoc_entity: 'Außen tVOC', outdoor_pm1_entity: 'Außen PM1', outdoor_pm10_entity: 'Außen PM10', outdoor_pm03_entity: 'Außen PM0.3', air_quality_entity: 'Luftqualitätsindex (optional)', hours_to_show: 'Diagrammverlauf', temperature_unit: 'Temperatureinheit', radon_unit: 'Radon-Einheit', tvoc_unit: 'tVOC-Messtyp', language: 'Sprache', section_additional: 'Weitere Sensoren', section_outdoor: 'Außensensoren', section_advanced: 'Erweitert' }
+  },
+  pt: {
+    status: { excellent: 'Excelente', good: 'Bom', moderate: 'Moderado', fair: 'Regular', poor: 'Ruim', very_poor: 'Muito Ruim', extremely_poor: 'Extremamente Ruim', dangerous: 'Perigoso' },
+    recommendation: { all_good: 'Tudo Bem', ventilate_now: 'Ventile Agora', run_air_purifier: 'Ligar o Purificador', consider_air_purifier: 'Considere um Purificador', open_window: 'Abra a Janela', air_purifier_ventilate: 'Purificador + Ventilação', co_danger: 'Perigo de CO — Saia do Ambiente', co_warning: 'Alerta de CO — Ventile Agora', co_elevated: 'CO Elevado — Ventile', consider_ventilating: 'Considere Ventilar', keep_windows_closed: 'Mantenha as Janelas Fechadas', too_dry: 'Muito Seco', too_humid: 'Muito Úmido', ventilate_formaldehyde: 'Ventile — Formaldeído', ventilate_vocs: 'Ventile — COVs Elevados' },
+    subtitle: { air_quality_healthy: 'A qualidade do ar está dentro dos limites saudáveis', co_danger: 'CO em {value} ppm — níveis perigosos detectados', co_danger_unknown: 'Níveis perigosos de CO', co_warning: 'CO em {value} ppm — abra todas as janelas imediatamente', co_warning_unknown: 'Níveis altos de CO', co_elevated: 'CO em {value} ppm — melhore a ventilação', co_elevated_unknown: 'Níveis de CO elevados', purifier_pm25: 'PM2.5 em {value} μg/m³ - filtre o ar', purifier_pm10: 'PM10 em {value} μg/m³ - filtre o ar', purifier_generic: 'Níveis de partículas elevados', consider_purifier_pm10: 'PM10 em {value} μg/m³', open_window_co2: 'CO₂ em {value} ppm - ar fresco necessário', purifier_ventilate: 'CO₂: {co2} ppm, PM2.5: {pm25} μg/m³', ventilate_now_co2: 'CO₂ em {value} ppm - pode afetar a concentração', ventilate_formaldehyde: 'HCHO em {value} ppb - ventilação necessária', ventilate_formaldehyde_unknown: 'Níveis de formaldeído elevados', ventilate_vocs: 'tVOC em {value} ppb - ventilação necessária', ventilate_vocs_unknown: 'Níveis de COVs elevados', too_dry: 'Umidade em {value}% - considere um umidificador', too_humid: 'Umidade em {value}% - ventile', consider_ventilating_co2: 'CO₂ em {value} ppm', consider_ventilating_pm25: 'PM2.5 em {value} μg/m³', consider_ventilating_generic: 'Níveis levemente elevados', keep_closed_outdoor_pm25_poor: 'PM2.5 externo em {value} μg/m³ - ar externo de má qualidade', keep_closed_outdoor_pm25: 'PM2.5 externo em {value} μg/m³ - pior que o ar interno', keep_closed_outdoor_co2: 'CO₂ externo em {value} ppm - pior que o ar interno', keep_closed_generic: 'A qualidade do ar externo é pior que o interno' },
+    radon: { advisory_danger: 'Radônio Alto — Mitigação Necessária', advisory_warning: 'Radônio Acima do Nível de Ação da EPA', advisory_info: 'Radônio — Monitorar de Perto', short_term: 'Curto prazo', long_term: 'Longo prazo' },
+    editor: { name: 'Nome do Cartão', co2_entity: 'Sensor de CO₂', pm25_entity: 'Sensor de PM2.5', humidity_entity: 'Sensor de Umidade', temperature_entity: 'Sensor de Temperatura', radon_entity: 'Sensor de Radônio', radon_longterm_entity: 'Sensor de Radônio (Longo Prazo)', co_entity: 'Sensor de CO (Monóxido de Carbono)', hcho_entity: 'Sensor de Formaldeído (HCHO)', tvoc_entity: 'Sensor de tVOC', pm4_entity: 'Sensor de PM4', nox_entity: 'Sensor de NOx', pm1_entity: 'Sensor de PM1', pm10_entity: 'Sensor de PM10', pm03_entity: 'Sensor de PM0.3', outdoor_co2_entity: 'CO₂ Externo', outdoor_pm25_entity: 'PM2.5 Externo', outdoor_humidity_entity: 'Umidade Externa', outdoor_temperature_entity: 'Temperatura Externa', outdoor_co_entity: 'CO Externo', outdoor_hcho_entity: 'HCHO Externo', outdoor_tvoc_entity: 'tVOC Externo', outdoor_pm1_entity: 'PM1 Externo', outdoor_pm10_entity: 'PM10 Externo', outdoor_pm03_entity: 'PM0.3 Externo', air_quality_entity: 'Índice de Qualidade do Ar (opcional)', hours_to_show: 'Histórico do Gráfico', temperature_unit: 'Unidade de Temperatura', radon_unit: 'Unidade de Radônio', tvoc_unit: 'Tipo de Medição de tVOC', language: 'Idioma', section_additional: 'Sensores Adicionais', section_outdoor: 'Sensores Externos', section_advanced: 'Avançado' }
   }
 };
 
@@ -2462,7 +2469,7 @@ if (LitElement && !customElements.get('air-quality-card-editor')) {
             { name: 'tap_action', selector: { ui_action: {} } },
             { name: 'hold_action', selector: { ui_action: {} } },
             { name: 'double_tap_action', selector: { ui_action: {} } },
-            { name: 'language', selector: { select: { options: [{ value: 'auto', label: 'Auto (from HA)' }, { value: 'en', label: 'English' }, { value: 'es', label: 'Español' }, { value: 'fr', label: 'Français' }, { value: 'de', label: 'Deutsch' }], mode: 'dropdown' } } },
+            { name: 'language', selector: { select: { options: [{ value: 'auto', label: 'Auto (from HA)' }, { value: 'en', label: 'English' }, { value: 'es', label: 'Español' }, { value: 'fr', label: 'Français' }, { value: 'de', label: 'Deutsch' }, { value: 'pt', label: 'Português' }], mode: 'dropdown' } } },
             { name: 'temperature_unit', selector: { select: { options: [{ value: 'auto', label: 'Auto (from HA)' }, { value: 'F', label: 'Fahrenheit (°F)' }, { value: 'C', label: 'Celsius (°C)' }], mode: 'dropdown' } } },
             { name: 'radon_unit', selector: { select: { options: [{ value: 'auto', label: 'Auto (from sensor)' }, { value: 'pCi/L', label: 'pCi/L (US)' }, { value: 'Bq/m³', label: 'Bq/m³ (International)' }], mode: 'dropdown' } } },
             { name: 'tvoc_unit', selector: { select: { options: [{ value: 'auto', label: 'Auto-detect' }, { value: 'ppb', label: 'Absolute (ppb)' }, { value: 'index', label: 'VOC Index (Sensirion)' }], mode: 'dropdown' } } },