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feat(ring-sr-mem-00): GOLD IV memory-types · closes #449 - #477
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Adds trios-agent-memory/SR-MEM-00 — anti-amnesia foundation. Pure
serde + SHA-256 content addressing, no I/O. Bottom of GOLD IV
dependency graph.
## Public types
- TripleId([u8; 32]) — SHA-256 of subject||predicate||object, hex64 JSON
- AgentRole — Scarab/Gardener/Trainer/Doctor/Claude/Lead (snake_case)
- MemoryKind — Working/Session/LongTerm/Episodic/Semantic
- ForgetPolicy — tagged: GdprByAgent{agent} / AgeOlderThan{duration} / PredicateMatches{predicate}
- Provenance { agent_id, task_id (UUID), source_sha (TripleId), ts }
- Triple { id, subject, predicate, object, provenance } + Triple::new() builder
## Content-addressed insert
TripleId::from_triple(s, p, o) = SHA-256(s || p || o).
Two calls with identical inputs always produce the same id — proven
idempotent. Every backend (Neon lessons, trios-kg, zig-knowledge-graph,
HDC) can use it as PK without coordination.
## Tests (15/15 GREEN)
- triple_id_is_content_addressed (same SPO ⇒ same id)
- triple_id_distinguishes_inputs (different SPO ⇒ different id)
- triple_id_serialises_as_hex64
- triple_id_rejects_wrong_length (31-byte hex fails)
- triple_id_display_lowercase_hex
- agent_role_serialises_snake_case
- memory_kind_roundtrip (every variant)
- memory_kind_long_term_is_snake_case
- forget_policy_gdpr_roundtrip (tagged kind)
- forget_policy_age_serializes_as_seconds
- forget_policy_predicate_roundtrip
- provenance_roundtrip
- triple_new_computes_id (builder derives correct id)
- triple_idempotent_insert (byte-equality on re-build)
- triple_full_roundtrip
## Compliance
- L1/L3/L4/L6/L13/L14 ✓
- R-RING-DEP-002 ✓ deps = serde + serde_json + uuid + chrono + sha2
- R-RING-FACADE-001 ✓ outer src/lib.rs re-exports only
- I5 ✓
🌻 phi^2 + phi^-2 = 3 · TRINITY · GOLD IV bottom · anti-amnesia
Soul-name: Memory Mason
Closes #449
Part of #446
Agent: Memory-Mason
22 tasks
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SR-MEM-00 — Memory Types (anti-amnesia foundation)
Closes #449 · Part of #446 · No blockers (independent GOLD IV thread)
Soul-name:
Memory Mason· Codename:LEAD· Tier: 🥉 Bronze · Kingdom: RustWhat landed
Bottom of the GOLD IV dependency graph. Every backend (Neon
lessons,trios-kg,zig-knowledge-graph, HDC episodic agents) speaks the sameTriple/TripleId/Provenance/ForgetPolicy/AgentRole/MemoryKindshape.Public types
TripleId([u8; 32])subject || predicate || object(lowercase-hex JSON, length 64)AgentRoleScarab/Gardener/Trainer/Doctor/Claude/Lead(snake_case)MemoryKindWorking/Session/LongTerm/Episodic/SemanticForgetPolicyGdprByAgent{agent}/AgeOlderThan{duration}/PredicateMatches{predicate}Provenanceagent_id,task_id(UUID),source_sha(TripleId),tsTripleid,subject,predicate,object,provenanceContent-addressed idempotent insert
TripleId::from_triple(s, p, o) = SHA-256(s || p || o)— two calls with identical inputs always produce the same id.Triple::new()derivesidfrom SPO, so re-inserting the same triple with the same provenance is byte-equal. Proven bytriple_id_is_content_addressed+triple_idempotent_inserttests.Tests (15/15 GREEN)
TripleId (5), AgentRole + MemoryKind (3), ForgetPolicy (3), Provenance (1), Triple (3).
Compliance
L1 ✓ · L3 ✓ · L4 ✓ · L6 ✓ · L13 ✓ · L14 ✓ · R-RING-DEP-002 ✓ (
serde + serde_json + uuid + chrono + sha2) · R-RING-FACADE-001 ✓ · I5 ✓Agent: Memory-Mason