spec hygiene: canonicalize Truth Plane ADR + examples + schema IDs#35

Merged

mdheller merged 13 commits intomainfrom

spec/hygiene-adr-catalog-20260418

Apr 18, 2026

Commits on Apr 18, 2026

docs(adr): add ADR-0009 stub (truth/delta)
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docs(adr): add ADR-0009 appendix A (reuse map + schema plan)
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docs(adr): deprecate ADR-0001 truth surfaces in favor of ADR-0009
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docs(adr): deprecate ADR-0001 appendix A in favor of ADR-0009 appendix
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examples: add TruthSurface canonical example (snake_case filename)
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examples: add DeltaSurface canonical example (snake_case filename)
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examples: remove duplicate hyphenated truth-surface sample (use truth_surface.json)
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examples: remove duplicate hyphenated delta-surface sample (use delta_surface.json)
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schemas(control-plane): normalize IncidentEvent $id into srcos namespace
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docs(schemas): add TruthSurface/DeltaSurface to schema catalog tables
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docs(examples): add Truth Plane examples section + canonical filenames
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changelog: add Truth Plane additions (surfaces, incident, patch fragments)
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docs(adr): add ADR index + numbering rule
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