feat(weather): weather impact summaries (outdoor/driving/allergy)

CHANGELOG.md

@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 ## Unreleased
 
 ### Added
+- Weather impact summaries now appear in the current conditions and forecast sections. You'll see plain-language guidance for three areas: outdoor comfort and activity, driving caution (visibility, ice, wind, precipitation), and allergy risk (pollen level, primary allergen, wind dispersion, air quality). All rules are transparent and documented — no opaque AI decisions. Screen readers announce concise, labelled lines such as "Impact: Outdoor: Comfortable - good conditions for outdoor activities."
 - Implemented Nationwide weather discussions feature, including:
     - "Show Nationwide location" setting and dynamic filtering of the Nationwide location.
     - Main window integration for displaying discussion summaries.

src/accessiweather/display/presentation/current_conditions.py

@@ -5,6 +5,7 @@
 import logging
 from collections.abc import Iterable
 
+from ...impact_summary import build_impact_summary
 from ...models import (
     AppSettings,
     CurrentConditions,
@@ -508,6 +509,15 @@ def build_current_conditions(
     metrics.extend(_build_environmental_metrics(environmental, air_quality))
     metrics.extend(_build_trend_metrics(trends, current, hourly_forecast, show_pressure_trend))
 
+    # Build impact summary
+    impact = build_impact_summary(current, environmental)
+    if impact.outdoor:
+        metrics.append(Metric("Impact: Outdoor", impact.outdoor))
+    if impact.driving:
+        metrics.append(Metric("Impact: Driving", impact.driving))
+    if impact.allergy:
+        metrics.append(Metric("Impact: Allergy", impact.allergy))
+
     # Build fallback text
     # Use metric.label for all metrics — after priority reordering, metrics[0]
     # may no longer be the Temperature metric (e.g. Visibility moves first during fog alerts)
@@ -530,6 +540,7 @@ def build_current_conditions(
         metrics=metrics,
         fallback_text=fallback_text,
         trends=trend_lines,
+        impact_summary=impact if impact.has_content() else None,
     )
 
 

src/accessiweather/display/presentation/forecast.py

@@ -6,6 +6,7 @@
 from datetime import datetime, tzinfo
 
 from ...forecast_confidence import ForecastConfidence
+from ...impact_summary import build_forecast_impact_summary
 from ...models import AppSettings, Forecast, ForecastPeriod, HourlyForecast, Location
 from ...utils import TemperatureUnit, calculate_dewpoint
 from ..weather_presenter import (
@@ -264,6 +265,10 @@ def build_forecast(
         fallback_sections.append(hourly_section_text)
     fallback_text = "\n\n".join(section for section in fallback_sections if section).rstrip()
 
+    # Build impact summary from the first daily period when available
+    first_period = forecast.periods[0] if forecast.periods else None
+    forecast_impact = build_forecast_impact_summary(first_period) if first_period else None
+
     return ForecastPresentation(
         title=title,
         periods=periods,
@@ -275,6 +280,9 @@ def build_forecast(
         hourly_section_text=hourly_section_text,
         confidence_label=confidence_label,
         summary=summary_line,
+        impact_summary=forecast_impact
+        if forecast_impact and forecast_impact.has_content()
+        else None,
     )
 
 

src/accessiweather/display/weather_presenter.py

@@ -17,6 +17,7 @@
 
     from ..forecast_confidence import ForecastConfidence
 
+from ..impact_summary import ImpactSummary
 from ..models import (
     AppSettings,
     AviationData,
@@ -86,6 +87,7 @@ class CurrentConditionsPresentation:
     metrics: list[Metric] = field(default_factory=list)
     fallback_text: str = ""
     trends: list[str] = field(default_factory=list)
+    impact_summary: ImpactSummary | None = None
 
     @property
     def trend_summary(self) -> list[str]:  # pragma: no cover - backward compatibility
@@ -107,6 +109,7 @@ class ForecastPresentation:
     hourly_section_text: str = ""
     confidence_label: str | None = None
     summary: str | None = None
+    impact_summary: ImpactSummary | None = None
 
 
 @dataclass(slots=True)