docs: align internal docs to enterprise standards

Add canonical operations/security/access/feature docs and fix path integrity to improve onboarding and incident readiness.

docs/adr/0001-peer-mesh-topology.md

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+# ADR 0001: Peer Mesh Topology
+
+## Status
+
+Accepted
+
+## Context
+
+CBDDC requires local-first synchronization without a central coordinator in LAN-focused deployments.
+
+## Decision
+
+Adopt a peer mesh topology with gossip-based synchronization and per-node oplog tracking.
+
+## Consequences
+
+- Improves resilience when individual nodes disconnect.
+- Requires strong operational tooling for lag, peer lifecycle, and pruning controls.
+- Increases importance of clear runbook and troubleshooting documentation.