docs consolidation and others

docs-archived/airgap/README.md

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+# AirGap Docs Index
+
+> **Note:** This directory contains **operational guides** for air-gap workflows. For module architecture and implementation details, see [docs/modules/airgap/](../modules/airgap/).
+
+## Operational Guides
+
+- Time anchors & staleness: `staleness-and-time.md`, `time-config-sample.json`, `time-api.md`, `time-anchor-verification-gap.md`
+- Import pipeline: `importer.md`, `bundle-repositories.md`
+- Controller/diagnostics: `controller.md`, `sealed-startup-diagnostics.md`
+- Portable evidence flows: `portable-evidence.md`
+- Offline bundle formats: `offline-bundle-format.md`
+- Parity verification: `offline-parity-verification.md`
+
+Use these as the front door for AirGap operational work; update alongside code changes.