One-shot console tool that regenerates Daybreak.Shared/Models/Guildwars/Skill.g.cs. Skill values come from the GWToolbox API (https://api.gwtoolbox.com/v1/en/skills.json), which is generated straight from the Guild Wars client; https://wiki.guildwars.com supplies only the roster and the icon URLs. This tool does not read the existing Skill.g.cs.

Run

dotnet run --project Tools/SkillUpdater

Why two sources

The API is the source of truth for every value because it is the client's own data: descriptions arrive already rendered ("20...44...50% faster") instead of as wiki markup the generator has to interpret ({{gr|20|50||%}}), and the numbers behind them are exact.

The wiki is kept for two things the API cannot provide:

The roster. The client's skill names are not unique — four different skills are called "Charm Animal", and ~1,600 unreleased/internal skills sit alongside the live ones. The wiki disambiguates them ("Charm Animal (White Mantle)"), and those unique names are what the generated C# identifiers and the icon lookup are keyed on.
The icons. The API serves DDS textures; Daybreak's builder and UI load the wiki's JPEGs dynamically.

What it does

Downloads the API's skill catalogue and indexes it by skill id.
Enumerates every skill page via the MediaWiki API (generator=categorymembers over the five campaign categories Core_skills, Prophecies_skills, Factions_skills, Nightfall_skills, Eye_of_the_North_skills) with prop=revisions&rvslots=main&rvprop=content, filters to pages containing a {{Skill infobox}} template, and reads the page title plus the infobox's id field.
Maps each id's API record onto Daybreak's model (SkillMapper).
Resolves the canonical CDN URL for each skill icon by batched prop=imageinfo queries — preferring the high-resolution <Name> (large).jpg, falling back to <Name>.jpg, leaving the URL empty when neither file exists.
Writes a sorted, grouped Skill.g.cs.

Mapping notes

SkillMapper translates the client's encodings, which are not Daybreak's:

Daybreak	API	Translation
`Energy`	`energy_cost`	An encoded cost: `11` means 15, `12` means 25.
`Adrenaline`	`adrenaline`	Stored in 25ths of a strike; rounded up.
`Sacrifice`	`health_cost`	A whole percentage; Daybreak stores a fraction.
`Upkeep`	`duration0`	Not a field — `131072` is the "maintained" sentinel, and those are exactly the `Upkeep = -1` skills.
`Type`	`type` (+ `weapon_req`, `combo`, `profession`, `touch_range`, `activation`)	`GW::Constants::SkillType` is one value where Daybreak's `SkillType` is a flags enum, so sub-type flags (`Touch`, `Flash`, weapon, `Lead`/`OffHand`/`Dual`, `Binding`/`Nature`/`EbonVanguard`) are recovered from the accompanying fields.

campaign, profession and attribute ids already match Daybreak's own, so they are looked up directly. Note that the API omits any key equal to its default, so a missing energy_cost means 0 — and a missing attribute means the skill has no governing attribute.