SectionSource v0 Planning Spec class

COUPLING PARTNERS

Co-modified in the same commits

• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Recommendation
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Proposed Phase Order.Phase 0: Spec
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Acceptance Criteria
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Field Rules.table@L236
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Non-Goals
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Proposed Phase Order.Later Phases
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Authorization Rules
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Body And Snippet Boundaries
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Explicitly Excluded Fields
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Field Rules
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Future JSON Contract Shape.code[json]@L212
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Goals
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Prompt-Injection Handling
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Proposed Phase Order
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• docs/SECTION-SOURCE-V0-SPEC.md SectionSource v0 Planning Spec.Deletion, Export, And Staleness Rules
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