feat: Semantic DAG v0.6.0 — append-only causal graph with signing and sync#76

Merged

ApiliumDevTeam merged 8 commits intodevfrom

feature/semantic-dag-v0.6.0

Mar 13, 2026

Commits on Mar 13, 2026

feat: Phase 1+2 — DagAction data model, DagStore persistent storage with indexes
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feat: time-travel queries, DAG export, Ed25519 signing, cross-node sync protocol
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feat: Phase 3 — GraphDB DAG integration with 18 new public methods
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feat: Phase 4 — WAL DagAction variant, Raft state machine, snapshot DAG tips
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feat: Phase 5 — Cortex write path creates DagActions through Raft
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feat: Phase 6 — DAG REST endpoints for introspection, time-travel, sync
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feat: mandatory Ed25519 signing for all DAG actions
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chore: bump all product crates to v0.6.0
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