feat: add nighttime rendering and improve place disambiguation

[Ninjona]

Summary

This PR addresses three major enhancements to weathery:

1. Nighttime Rendering Support – Full day/night awareness with dedicated clear-sky animation and moon icons
2. Location Disambiguation Fix – Robust handling of ambiguous place names that exist in multiple states/countries
3. Weather Code Integration – Day/night aware weather descriptions and reliable animation selection using weather codes

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Changes

Feature 1: Nighttime Support

Files Modified: src/animate.rs, src/weather.rs, src/main.rs

• Added is_night: bool flag to WeatherData by parsing Open-Meteo's is_day field
• Implemented dedicated animate_clear_night() function that renders twinkling stars on dark backgrounds
• Added night-aware icon display (moon 🌙 instead of sun ☀️ for clear conditions)
• Applied night_tint() color filter to all weather animations during nighttime
• Implemented fixed-position star placement with time-based twinkle effect to avoid "precipitation" appearance

User Benefit:

• Realistic nighttime visualization with distinct animations
• Proper icon representation of nighttime conditions
• No false precipitation appearance during clear nights

Feature 2: Place Disambiguation & Resolution

Files Modified: src/weather.rs, src/image_fetch.rs, src/main.rs

Geocoding Improvements:

• Changed Open-Meteo search from single result (count=1) to top 10 candidates (count=10)
• Implemented fallback query strategy:
  1. Try original full query
  2. Fall back to comma-normalized query
  3. Fall back to city-only query
• Preserved query priority order using HashSet deduplication
• Added weighted disambiguation scoring:
  • Exact admin1/country match: +5M points
  • Partial haystack match: +1M points
  • No match in secondary parts: -500K points
  • Population tiebreaker
• Extended GeoResult deserialize to capture name, admin1, country, population fields
• Added format_location_name() to generate canonical display names

Image Resolution Improvements:

• Implemented Wikipedia search fallback in get_city_image_url()
• Try direct Wikipedia title lookup first
• Fall back to Wikipedia search with top 8 results if no thumbnail found
• Iterate through search results to find one with an image
• Ensures ambiguous places resolve to pages with actual imagery
• Automatic fallback to user's original query if canonical name has no Wikipedia image
• Robust handling of place disambiguation across API boundaries

Feature 3: Weather Code Integration & Day/Night Icons

Files Modified: src/animate.rs, src/main.rs, src/weather.rs

• Extracted weather_code: u32 field into WeatherData struct for direct access
• Implemented weather_from_code() function mapping codes to animation types:
  • Codes 51, 53, 55, 61, 63, 65, 80, 81, 82 → Rain
  • Codes 71, 73, 75, 77, 85, 86 → Snow
  • Codes 95, 96, 99 → Thunderstorm
  • All others → Clear
• Updated animation selection to use weather codes directly (bypasses description parsing)
• Made weather_description() day/night aware:
  • Daytime: ☀️ Clear sky, 🌤 Mainly clear, ⛅ Partly cloudy
  • Nighttime: 🌙 Clear sky, 🌙 Mainly clear, ☁️ Partly cloudy
• Removed unused string-based Weather::from_str() parser

User Benefit:

• More reliable animation selection based on official codes, not fragile text parsing
• Proper nighttime icon representation (moon instead of sun)
• Cleaner codebase with dead code removed

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This PR adds:

• Full nighttime animation system
• Production-grade place disambiguation
• Robust code-based weather classification
• Wikipedia search fallback for images

Lines Changed:

• src/weather.rs: +121/-18 (net +103)
• src/animate.rs: +130/-12 (net +118)
• src/image_fetch.rs: +32/-8 (net +24)
• src/main.rs: +16/-6 (net +10)

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Testing Checklist

• weathery "Rochester, NY" – resolves correctly
• Clear-night mode renders with twinkling stars (no false precipitation)
• Nighttime weather shows moon icon instead of sun
• Rain/snow animations don't trigger on clear days
• Weather code mapping covers all Open-Meteo codes
• Daytime behavior unchanged

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[VG-dev1]

Thank you so much for a massive PR! That's awesome!

I’m really excited about your changes. They address a lot of issues and add great improvements. The timing is a bit tricky, though: I have some local features I’ve been working on that I haven’t committed yet.

Because of that, I need to carefully integrate your PR with my local changes to make sure everything works together.

I just wanted to give you a heads-up in case I take a little extra time to make sure everything is fully compatible.

Thanks again for the huge contribution, I really appreciate it!

[VG-dev1]

I've baked everything together into one commit I just pushed to my branch, so I can't merge your PR. I'm closing it. But again, thank you so much for your amazing contribution!