fix(compiler): preserve global initializer locals

[akonwi]

Summary

• represent each AIR global initializer as an executable region that owns its local table and expression
• validate and lower initializer locals, captures, references, names, and imports in an isolated per-global context
• preserve dependency-aware Go package-variable IIFEs and explicit lexical block scopes
• preserve contextual Result/Maybe types for block-valued globals
• reconcile ADR 0021 and ADR 0031 with current initializer and cycle-diagnostic behavior

Validation

• go test ./... -count=1
• go test -race ./air ./go -count=1
• go vet ./...
• gopls check on changed Go files
• LSP harness: 18/18
• downstreams: Tinear, Decode, SQL, Cooper

Follow-up

• fix(compiler): preserve self slot for final recursive local declaration #484 tracks a separate pre-existing direct-final recursive local declaration bug discovered during review

Fixes #482

[vercel]

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Project	Deployment	Actions	Updated
ard-lang-dev	Ready	Preview	Sep 7, 2026 7:05pm UTC