DECK6 · DECK6 · Aug 13, 2026 · Aug 13, 2026
diff --git a/99-system/INDEX.md b/99-system/INDEX.md
@@ -15,6 +15,8 @@ Full note list with one-line summaries. Update this file whenever notes are adde
 - `evidence-row.schema.json` — JSON Schema 2020-12 companion for EvidenceRow and EvidencePacket
 - [[TASK-CONTRACT-SCHEMA]] — bounded artifact-work contract, readback requirements, runtime limit, and dispatch gate
 - `task-contract.schema.json` — JSON Schema 2020-12 companion for task contracts
+- [[MEMORY-RUNTIME]] — scoped local memory lifecycle, durable fences, bounded context packs, and rebuild contract
+- `memory-record.schema.json` — JSON Schema 2020-12 companion for durable runtime memory records
 - [[ENFORCEMENT]] — read-only instruction, task-contract, routing-failure, and prompt-asset lint modes
 - [[EXTERNAL-ASSETS]] — keep large binaries outside the text vault while preserving relative-path traceability
 - [[MIGRATION]] — phased consolidation guide for adopting an existing Markdown or Obsidian vault
@@ -46,15 +48,15 @@ Full note list with one-line summaries. Update this file whenever notes are adde
 
 ## 50-procedures
 
-(empty)
+- [AKM memory runtime playbook](../adapters/hermes/memory/PLAYBOOK.md) — operate candidate review, scoped recall, guarded forget, rebuild, doctor, and reconciliation
 
 ## 60-actions
 
 (empty)
 
 ## 70-evaluation
 
-(empty)
+- [AKM memory runtime evaluation](../adapters/hermes/memory/EVALUATION.md) — conformance, adversarial safety, shadow metrics, and global-injection HOLD gates
 
 ## 80-outputs
 
@@ -69,6 +71,7 @@ Full note list with one-line summaries. Update this file whenever notes are adde
 - [custom](../adapters/custom/README.md) — write an adapter for any agent
 - [aside](../adapters/aside/README.md) — Aside instructions + native-memory pointer division
 - [hermes](../adapters/hermes/README.md) — multi-profile session instructions + shared AKM pointer division
+- [hermes memory runtime](../adapters/hermes/memory/README.md) — optional local scoped-memory adapter, CLI, tests, and external runtime-root boundary
 
 ## examples
 

diff --git a/99-system/LOG.md b/99-system/LOG.md
@@ -21,3 +21,4 @@ Append-only change history. Format: `YYYY-MM-DD | change | note`
 - 2026-07-10 | Nara Finder–proposal-mcp subscription integration logged | recorded Claude/Codex CLI MCP setup, Nemotron persona targeting, event success/failure analysis, and copy-reaction validation
 - 2026-07-10 | Local instance notes migrated out of Dev AKM core | moved 12 classified notes plus 2 maintainer mapping notes to `/Volumes/data/Obsidian/akm`; retained only reusable core system, tests, and adapters in Dev
 - 2026-07-24 | Production-proven evidence and execution controls promoted to core v0.3 | added portable EvidenceRow/EvidencePacket and bounded task-contract schemas, four read-only enforcement modes, operational-document budgets, routing-failure handoff, tests, and CI coverage while excluding live-instance device, backup, private-repository, fixed-memory, and HOLD retrieval-adapter policy
+- 2026-08-13 | Reusable local memory runtime framework added | [[MEMORY-RUNTIME]]
diff --git a/99-system/MEMORY-RUNTIME.md b/99-system/MEMORY-RUNTIME.md
diff --git a/99-system/memory-record.schema.json b/99-system/memory-record.schema.json
@@ -0,0 +1,284 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://github.com/DECK6/akm/blob/main/99-system/memory-record.schema.json",
+  "$comment": "Independent AKM schema adapting selected memory lifecycle concepts from gbrain commit 1ec6a6e842a15f2bde2ebe8c3a686a6fa6b17aa5; no gbrain code, service, database, or runtime data is included.",
+  "title": "AKM local memory record",
+  "description": "A scoped runtime record whose durable Markdown form remains subordinate to its cited AKM/original source and from which disposable derived state can be rebuilt.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": [
+    "schema_version",
+    "id",
+    "state",
+    "revision",
+    "text",
+    "safe_summary",
+    "kind",
+    "entity",
+    "scope",
+    "visibility",
+    "egress_allowed",
+    "stable_authority",
+    "source",
+    "created_at",
+    "modified_at",
+    "expires_at",
+    "supersedes",
+    "superseded_by",
+    "decision_evidence",
+    "history"
+  ],
+  "properties": {
+    "schema_version": {
+      "const": "1.0.0"
+    },
+    "id": {
+      "type": "string",
+      "pattern": "^mem_[a-z0-9_-]{3,80}$"
+    },
+    "state": {
+      "enum": [
+        "candidate",
+        "active",
+        "superseded",
+        "expired",
+        "forgotten",
+        "rejected"
+      ]
+    },
+    "revision": {
+      "type": "integer",
+      "minimum": 1
+    },
+    "text": {
+      "type": "string",
+      "minLength": 1
+    },
+    "safe_summary": {
+      "type": "string",
+      "minLength": 1,
+      "maxLength": 240
+    },
+    "kind": {
+      "enum": [
+        "fact",
+        "event",
+        "preference",
+        "safety",
+        "commitment",
+        "belief",
+        "procedure"
+      ]
+    },
+    "entity": {
+      "type": "string",
+      "minLength": 1,
+      "maxLength": 200
+    },
+    "scope": {
+      "$ref": "#/$defs/scope"
+    },
+    "visibility": {
+      "enum": [
+        "public",
+        "non_sensitive",
+        "private",
+        "restricted"
+      ]
+    },
+    "egress_allowed": {
+      "type": "boolean"
+    },
+    "stable_authority": {
+      "type": "boolean"
+    },
+    "source": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "path",
+        "lineage"
+      ],
+      "properties": {
+        "path": {
+          "type": "string",
+          "minLength": 1
+        },
+        "lineage": {
+          "type": "array",
+          "minItems": 1,
+          "items": {
+            "type": "string",
+            "minLength": 1
+          }
+        }
+      }
+    },
+    "created_at": {
+      "$ref": "#/$defs/timestamp"
+    },
+    "modified_at": {
+      "$ref": "#/$defs/timestamp"
+    },
+    "expires_at": {
+      "anyOf": [
+        {
+          "$ref": "#/$defs/timestamp"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "forgotten_at": {
+      "anyOf": [
+        {
+          "$ref": "#/$defs/timestamp"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "supersedes": {
+      "anyOf": [
+        {
+          "type": "string",
+          "pattern": "^mem_[a-z0-9_-]{3,80}$"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "superseded_by": {
+      "anyOf": [
+        {
+          "type": "string",
+          "pattern": "^mem_[a-z0-9_-]{3,80}$"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "decision_evidence": {
+      "anyOf": [
+        {
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "history": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "$ref": "#/$defs/history_event"
+      }
+    }
+  },
+  "allOf": [
+    {
+      "if": {
+        "properties": {
+          "stable_authority": {
+            "const": true
+          }
+        }
+      },
+      "then": {
+        "properties": {
+          "kind": {
+            "enum": [
+              "preference",
+              "safety"
+            ]
+          },
+          "expires_at": {
+            "type": "null"
+          }
+        }
+      }
+    }
+  ],
+  "$defs": {
+    "timestamp": {
+      "type": "string",
+      "format": "date-time"
+    },
+    "scope": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "source_id",
+        "project",
+        "profile",
+        "user"
+      ],
+      "properties": {
+        "source_id": {
+          "type": "string",
+          "minLength": 1
+        },
+        "project": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "minLength": 1
+        },
+        "profile": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "minLength": 1
+        },
+        "user": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "minLength": 1
+        }
+      }
+    },
+    "history_event": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": [
+        "change",
+        "at",
+        "evidence"
+      ],
+      "properties": {
+        "change": {
+          "enum": [
+            "created",
+            "modified",
+            "superseded",
+            "expired",
+            "forgotten"
+          ]
+        },
+        "at": {
+          "$ref": "#/$defs/timestamp"
+        },
+        "evidence": {
+          "type": "string",
+          "minLength": 1
+        },
+        "detail": {
+          "type": "string"
+        },
+        "related_record_id": {
+          "type": "string",
+          "pattern": "^mem_[a-z0-9_-]{3,80}$"
+        }
+      }
+    }
+  }
+}
diff --git a/adapters/hermes/README.md b/adapters/hermes/README.md
@@ -42,6 +42,10 @@ Hermes runs several profiles against one machine. AKM is a **single shared insta
 - Semantic search across AKM markdown: reuse an existing local search engine (e.g. `qmd`) and add the AKM root as a collection.
 - Explicit link/tag traversal: any doc-graph tool that parses `[[wikilinks]]` + frontmatter works on AKM as-is.
 
+## Optional local memory runtime
+
+For explicit candidate review, exact scope isolation, reversible forget fences, bounded context packs, and rebuildable derived state, see [`adapters/hermes/memory/`](memory/README.md). The adapter requires an operator-supplied runtime root outside the AKM repository and keeps global prompt injection on `HOLD` by default.
+
 ## Safety
 
 AKM `99-system/SECURITY.md` runs **before** ROUTER. It matches Hermes' own rule: never store secret values, store their names/locations instead. Layer folders are gitignored and never leave the machine.