✨ 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/patterns.go

@@ -0,0 +1,50 @@
+package weather
+
+import "regexp"
+
+var (
+	// Wind patterns: 35012KT, VRB05KT, 27015G25KT, 00000KT
+	windPattern = regexp.MustCompile(`^(?P<dir>\d{3}|VRB)(?P<speed>\d{2,3})(G(?P<gust>\d{2,3}))?(?P<unit>KT|MPS)$`)
+
+	// Variable wind: 180V240 (variable from 180 to 240 degrees)
+	variableWindPattern = regexp.MustCompile(`^(?P<from>\d{3})V(?P<to>\d{3})$`)
+
+	// Visibility patterns: 9999, 10SM, M1/4SM, 1 1/2SM, 1500
+	visibilityPattern = regexp.MustCompile(`^(?P<modifier>[MP\+\-]?)(?P<dist>\d+(?:\s*\d+/\d+)?)(?P<unit>SM|M)?$`)
+
+	// Directional visibility: 2000NE (visibility in a specific direction)
+	directionalVisibilityPattern = regexp.MustCompile(`^(?P<dist>\d{4})(?P<dir>[NSEW]{1,2})$`)
+
+	// Cloud patterns: FEW020, SCT030CB, BKN100, OVC200, VV010, SKC, CLR, NSC
+	cloudPattern = regexp.MustCompile(`^(?P<type>FEW|SCT|BKN|OVC|VV)(?P<alt>\d{3})(?P<modifier>CB|TCU)?$`)
+
+	// Special cloud codes: SKC (sky clear), CLR (clear), NSC (no significant clouds)
+	skyClearPattern = regexp.MustCompile(`^(SKC|CLR|NSC)$`)
+
+	// Temperature/Dewpoint: 25/18, M05/M10, XX/XX
+	tempPattern = regexp.MustCompile(`^(?P<temp_mod>M?)(?P<temp>\d{2})/(?P<dew_mod>M?)(?P<dew>\d{2})$`)
+
+	// Altimeter patterns: Q1013 (hPa), A2992 (inHg)
+	altimeterPattern = regexp.MustCompile(`^(?P<unit>[QA])(?P<value>\d{4})$`)
+
+	// Weather phenomenon patterns: -RA, +SN, TSRA, FZFG, BR, FG, etc.
+	// Intensity: -, +, or empty
+	// Descriptors: MI, BC, PR, DR, BL, SH, TS, FZ, DZ, RA, SN, SG, IC, PL, GR, GS, UP, BR, FG, FU, VA, DU, SA, HZ, PY, PO, SQ, FC, SS, DS
+	// Weather: DZ, RA, SN, SG, IC, PL, GR, GS, UP, BR, FG, FU, VA, DU, SA, HZ, PY, PO, SQ, FC, SS, DS
+	phenomenonPattern = regexp.MustCompile(`^(?P<intensity>[\+\-])?(?P<descriptor>MI|BC|PR|DR|BL|SH|TS|FZ|DZ|RA|SN|SG|IC|PL|GR|GS|UP|BR|FG|FU|VA|DU|SA|HZ|PY|PO|SQ|FC|SS|DS)?(?P<weather>DZ|RA|SN|SG|IC|PL|GR|GS|UP|BR|FG|FU|VA|DU|SA|HZ|PY|PO|SQ|FC|SS|DS)+$`)
+
+	// Time pattern: 251200Z (DDHHmmZ format)
+	timePattern = regexp.MustCompile(`^(?P<day>\d{2})(?P<hour>\d{2})(?P<min>\d{2})Z$`)
+
+	// TAF validity period: 2512/2612 (DDHH/DDHH format)
+	tafValidityPattern = regexp.MustCompile(`^(?P<from_day>\d{2})(?P<from_hour>\d{2})/(?P<to_day>\d{2})(?P<to_hour>\d{2})$`)
+
+	// TAF period markers: FM251200, TEMPO2512/2515, BECMG2512/2515
+	tafFMPattern    = regexp.MustCompile(`^FM(?P<day>\d{2})(?P<hour>\d{2})(?P<min>\d{2})$`)
+	tafTEMPOPattern = regexp.MustCompile(`^TEMPO(?P<from_day>\d{2})(?P<from_hour>\d{2})/(?P<to_day>\d{2})(?P<to_hour>\d{2})$`)
+	tafBECMGPattern = regexp.MustCompile(`^BECMG(?P<from_day>\d{2})(?P<from_hour>\d{2})/(?P<to_day>\d{2})(?P<to_hour>\d{2})$`)
+
+	// Modifiers: AUTO, COR, NIL, etc.
+	modifierPattern = regexp.MustCompile(`^(AUTO|COR|NIL)$`)
+)
+