# PBS Frontend PR Sequence

Este indice organiza uma sequencia de PRs atomicas para levar `frontends/pbs` ao contrato das specs.

1. `PR-001-pbs-lexer-core-syntax-alignment.md`
2. `PR-002-pbs-ast-contract-v1.md`
3. `PR-003-pbs-parser-declarations-and-types.md`
4. `PR-004-pbs-parser-statements-and-control-flow.md`
5. `PR-005-pbs-parser-expressions-optional-result-apply.md`
6. `PR-006-pbs-barrel-and-module-visibility.md`
7. `PR-007-pbs-static-semantics-declaration-validation.md`
8. `PR-008-pbs-static-semantics-call-resolution-and-flow.md`
9. `PR-009-pbs-diagnostics-contract-v1.md`
10. `PR-010-pbs-irbackend-lowering-contract.md`
11. `PR-011-pbs-gate-u-conformance-fixtures.md`

Cada documento e auto contido e inclui: `Briefing`, `Target`, `Method`, `Acceptance Criteria` e `Tests`.