chore: restore product scaffold to rollback baseline

docs/governance/document-naming-convention.md

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+# Chanora Document Naming Convention
+
+**Document status:** DV meeting baseline candidate  
+**Date:** 2026-05-29
+
+## 1. Rule
+
+Repository documentation uses lowercase kebab-case file names under topic directories.
+
+Examples:
+
+| Document type | Path pattern |
+|---|---|
+| Requirements | `docs/requirements/<name>.md` or canonical root file during migration |
+| Architecture | `docs/architecture/<artifact>.md` |
+| Verification | `docs/verification/<lifecycle>-verification-plan.md` |
+| Release | `docs/release/<record-name>.md` |
+| Governance | `docs/governance/<record-name>.md` |
+
+## 2. Identifier Rules
+
+| Identifier | Meaning |
+|---|---|
+| `SysRS-XXX` | System requirement |
+| `SysDes-XXX` | System design item |
+| `SRS-XXX` | Software requirement |
+| `SAD` | Software Architecture Description / SWE.2 |
+| `SDD` | Software Detailed Design / SWE.3 |
+| `DV-WVR-XXX` | DV waiver |
+
+## 3. Migration Rule
+
+When canonical files move, path records must be replaced by the canonical content or by redirects that clearly identify the authoritative source.