✨ Add weather report parsing for METAR, SPECI, and TAF

Implement comprehensive weather parsing capabilities following Clean
Architecture principles with composite parser pattern for routing between
aviation and weather messages.

## Features Added

- Weather report parsing (METAR, SPECI, TAF)
- Composite parser pattern for message routing
- Lenient parsing with warnings for unrecognized tokens
- Support for PROB and RMK sections in TAF
- Rich domain modeling with typed weather elements

## Architecture

**Domain Layer** (internal/domain/weather/):
- WeatherMessage interface with Metar and Taf implementations
- Weather elements: Wind, Visibility, Cloud, Temperature, Altimeter, Phenomenon
- Domain errors: ErrInvalidFormat, ErrMissingStation, ErrMissingTime

**Port Layer** (internal/port/weather_parser.go):
- WeatherParser interface with CanParse and Parse methods

**Adapter Layer** (internal/adapter/parser/weather/):
- WeatherParserImpl with classification and parsing logic
- Comprehensive regex patterns for weather elements
- METAR/SPECI parser with element extraction
- TAF parser with period handling (FM, TEMPO, BECMG, PROB)
- Helper functions for time parsing and unit conversions

**Composite Parser** (internal/adapter/parser/composite.go):
- Routes weather reports to weather parser
- Falls back to aviation parser for telegrams
- Converts WeatherMessage to ParsedTelegram format

## Integration

- Updated ProvideParser to create composite parser with weather parser
- Added weather parser to Wire DI configuration
- Updated processor_bench_test.go for weather parser integration
- Documentation added in docs/weather-parser.md

## Testing

- 29 comprehensive tests for weather parsing (all passing)
- Tests for classification, METAR, SPECI, TAF, and composite routing
- Benchmark compatibility maintained

## Fixes Applied

- TAF PROB parsing: Include PROB/RMK in special section detection
- Composite test: Updated to use properly formatted AFTN telegram
- Linter issues: Switch statement refactor, removed unused patterns
- Ineffective break statement fixed in TAF parser

## Coverage

~1,743 lines of new code with:
- Complete METAR/SPECI parsing
- TAF parsing with period support
- Lenient error handling with warnings
- Unit conversions and time utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

internal/adapter/parser/weather/classifier_test.go

@@ -0,0 +1,53 @@
+package weather
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Classifier", func() {
+	Describe("Classify", func() {
+		It("should identify METAR reports", func() {
+			reportType, ok := Classify("METAR KJFK 251200Z 35012KT 10SM FEW020 25/18 Q1013=")
+			Expect(ok).To(BeTrue())
+			Expect(reportType).To(Equal("METAR"))
+		})
+
+		It("should identify SPECI reports", func() {
+			reportType, ok := Classify("SPECI KORD 251215Z 27015G25KT 5SM -RA BKN030 OVC050 20/18 A2992=")
+			Expect(ok).To(BeTrue())
+			Expect(reportType).To(Equal("SPECI"))
+		})
+
+		It("should identify TAF reports", func() {
+			reportType, ok := Classify("TAF KJFK 251200Z 2512/2612 35012KT 10SM FEW020=")
+			Expect(ok).To(BeTrue())
+			Expect(reportType).To(Equal("TAF"))
+		})
+
+		It("should return false for non-weather reports", func() {
+			_, ok := Classify("(FPL-JAE7433-IS")
+			Expect(ok).To(BeFalse())
+		})
+
+		It("should return false for empty string", func() {
+			_, ok := Classify("")
+			Expect(ok).To(BeFalse())
+		})
+	})
+
+	Describe("HasValidEnding", func() {
+		It("should return true for reports ending with =", func() {
+			Expect(HasValidEnding("METAR KJFK 251200Z 35012KT 10SM FEW020 25/18 Q1013=")).To(BeTrue())
+		})
+
+		It("should return false for reports without =", func() {
+			Expect(HasValidEnding("METAR KJFK 251200Z 35012KT 10SM FEW020 25/18 Q1013")).To(BeFalse())
+		})
+
+		It("should handle whitespace", func() {
+			Expect(HasValidEnding("METAR KJFK 251200Z 35012KT 10SM FEW020 25/18 Q1013= ")).To(BeTrue())
+		})
+	})
+})
+