Add Warcraft III v3 native wrappers

[Frotty]

Summary

• move WurstStdlib2's declared WC3 target from v2.0 to v3.0
• add idiomatic extensions and focused packages for every native declaration introduced by WC3 v3
• cover inventory/loadouts, units, camera, destructables, effects, frames, input, triggers, doodads, terrain fog, HD water, cinematics, and new native handle conversions
• preserve Z in the existing vec3 destructable factory now that the v3 API is the main line
• expose the new doodad API through the standard Wurst import surface

Acceptance criteria

• every native added between the v2 and v3 common.j snapshots has a typed stdlib entry point
• local input-state wrappers explicitly warn against driving synchronized state
• public APIs use semantic Wurst types such as vec2, vec3, and angle
• existing stdlib tests remain green

Verification

• native coverage audit — 137/137 added declarations referenced
• grill typecheck --quiet — passed
• grill test --quiet — 504/504 tests passed
• git diff --check — clean

Compatibility

• the pre-v3 master state is preserved on the published v2.0 branch for Grill to select for older project targets

Known gaps

• new engine-native behavior is compile-verified; it has not been exercised in a dedicated Warcraft III runtime map

[Frotty]

@codex review

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-13T09:08:01.516800Z	4998a0d	Manual request

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Reviewed commit: 4998a0da46

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