Remove references to "v4" throughout the code and documentation

2026-08-20 16:35:20 -05:00
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+# Document Transcription System Overview (Version 4)
+
+This directory is the single source of truth for current Version 4 behavior and architecture.
+
+## Canonical Reading Order
+
+1. [System Architecture](architecture.md) for runtime topology, boundaries, and lifecycle ownership.
+2. [System Requirements](requirements.md) for verifiable current-state requirements.
+3. [Data Model](schema.md) for entities, constraints, and evidence persistence rules.
+4. [Error Handling Policy](error_handling.md) for category, translation, and retry behavior.
+
+## Cross-Version Invariants
+
+- [Historical Document Transcription Design Intent](../invariant/intent.md)
+- [Transcription Methodology](../invariant/transcription_methodology.md)
+- [Error Handling](../invariant/error_handling.md)
+- [Digital Evidence and AI Processing Provenance](../invariant/ai_evidence_and_provenance.md)
+- [UI Style Guide](../invariant/ui_style_guide.md)
+
+## Baseline Statement
+
+The current Version 4 baseline includes behavior delivered through the architectural cleanup phases.
+Use this `docs/*` canonical set for active design and implementation decisions.