Add manual Storm Report generation

docs/internal/briefing.md

@@ -6,7 +6,8 @@ This document describes the implemented briefing package boundary.
 
 `internal/briefing` builds structured report-specific briefing packages from
 forecast summaries and report metadata. The package currently implements Daily
-Today, Daily Tomorrow, 3-Day Outlook, and Weekend Outlook briefing content.
+Today, Daily Tomorrow, 3-Day Outlook, Weekend Outlook, and Storm Report
+briefing content.
 
 ## Inputs and Outputs
 
@@ -45,6 +46,11 @@ Output:
 - Weekend content uses the same daily outlook summaries and adds planning
   inputs for best outdoor windows, worst weather windows, rain/storm timing,
   comfort concerns, and confidence or uncertainty context.
+- Storm content uses the explicit event window and includes event headline
+  inputs, hazards, most-likely scenario inputs, reasonable worst-case inputs,
+  confidence and uncertainty inputs, watch items, active alerts, relevant
+  hourly and narrative forecast periods, and available discussion or weather
+  story context.
 - Briefing JSON is written atomically by `briefing.Save`.
 
 ## Failure Behavior
@@ -55,6 +61,8 @@ Output:
   one derived daily summary in the outlook period.
 - Weekend briefing construction requires a Weekend report definition and at
   least one derived daily summary in the weekend period.
+- Storm briefing construction requires a Storm Report definition and a forecast
+  bundle.
 - Save failures include path and operation context.
 
 ## Tests
@@ -64,6 +72,7 @@ Inspect:
 - `internal/briefing/daily_test.go`
 - `internal/briefing/three_day_test.go`
 - `internal/briefing/weekend_test.go`
+- `internal/briefing/storm_test.go`
 - `internal/app/app_test.go`
 - `internal/cli/root_test.go`
 

docs/internal/prompt-input.md

@@ -11,8 +11,8 @@ This document describes the implemented prompt input package boundary.
 
 Input:
 
-- `briefing.Package` containing Daily-family, 3-Day Outlook, or Weekend Outlook
-  content
+- `briefing.Package` containing Daily-family, 3-Day Outlook, Weekend Outlook,
+  or Storm Report content
 
 Output: