diff --git a/graph/decisions/cognitive-memory-data-dir-moved-to-xdg-compliant-path-locals-dc9c26.md b/graph/decisions/cognitive-memory-data-dir-moved-to-xdg-compliant-path-locals-dc9c26.md
index fe8ce9a71a2..bb99fbb2d37 100644
--- a/graph/decisions/cognitive-memory-data-dir-moved-to-xdg-compliant-path-locals-dc9c26.md
+++ b/graph/decisions/cognitive-memory-data-dir-moved-to-xdg-compliant-path-locals-dc9c26.md
@@ -2,17 +2,22 @@
 id: dc9c2638-360e-4e15-990c-76fcd16672c0
 type: decision
 title: "Cognitive memory data dir moved to XDG-compliant path (~/.local/share/cognitive-memory/)"
-tags: ["[\\\"cognitive-memory\\\"", xdg, architecture, portability, "\\\"configuration\\\"]"]
+tags: ["[\\\\\\\"cognitive-memory\\\\\\\"", xdg, architecture, portability, "\\\\\\\"configuration\\\\\\\"]"]
 importance: 0.85
 confidence: 0.8
 created: "2026-02-28T20:56:13.079823+00:00"
-updated: "2026-02-28T20:57:02.774732+00:00"
+updated: "2026-02-28T20:57:20.365199+00:00"
 relations:
   - target: b1ba1b27-d2bf-44f9-a1f5-0ace2017dc18
     type: BUILDS_ON
     direction: incoming
     strength: 0.8
     edge_id: 1f7a87ef-5d03-45bb-a1d2-3fd8796b1e7f
+  - target: 9ea72015-0b85-4a42-9ae1-144866f8d86f
+    type: FOLLOWS
+    direction: outgoing
+    strength: 0.8
+    edge_id: 30dd2fb7-f75f-4083-8b7c-52b8ce95cfc8
 ---
 
 # Cognitive Memory: XDG Base Directory Compliance
diff --git a/graph/edges/cognitive-memory-data-dir-move--FOLLOWS--cognitive-memory-v30-rich-edge-30dd2f.md b/graph/edges/cognitive-memory-data-dir-move--FOLLOWS--cognitive-memory-v30-rich-edge-30dd2f.md
new file mode 100644
index 00000000000..e42acb51dca
--- /dev/null
+++ b/graph/edges/cognitive-memory-data-dir-move--FOLLOWS--cognitive-memory-v30-rich-edge-30dd2f.md
@@ -0,0 +1,13 @@
+---
+id: 30dd2fb7-f75f-4083-8b7c-52b8ce95cfc8
+type: FOLLOWS
+from_id: dc9c2638-360e-4e15-990c-76fcd16672c0
+from_title: "Cognitive memory data dir moved to XDG-compliant path (~/.local/share/cognitive-memory/)"
+to_id: 9ea72015-0b85-4a42-9ae1-144866f8d86f
+to_title: "Cognitive Memory v3.0: Rich Edges + Hybrid Embeddings + MCP Server"
+strength: 0.8
+created: "2026-02-28T20:57:20.365199+00:00"
+updated: "2026-02-28T20:57:20.365199+00:00"
+---
+
+XDG path migration was part of v3.1.0 changes to v3.0 architecture
diff --git a/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md b/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md
index 1b7f1434064..caa17a5eedb 100644
--- a/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md
+++ b/graph/solutions/cognitive-memory-v30-rich-edges-hybrid-embeddings-mcp-server-9ea720.md
@@ -6,7 +6,7 @@ tags: [cognitive-memory, mcp, architecture, upgrade]
 importance: 0.9
 confidence: 0.8
 created: "2026-02-19T20:10:42.128691+00:00"
-updated: "2026-02-28T20:57:19.908975+00:00"
+updated: "2026-02-28T20:57:20.365199+00:00"
 relations:
   - target: dc6b6c6f-1319-47cf-a691-dd40751ff121
     type: BUILDS_ON
@@ -23,6 +23,11 @@ relations:
     direction: incoming
     strength: 0.8
     edge_id: f5227880-ea2c-4330-b7f1-eb367fc12c9e
+  - target: dc9c2638-360e-4e15-990c-76fcd16672c0
+    type: FOLLOWS
+    direction: incoming
+    strength: 0.8
+    edge_id: 30dd2fb7-f75f-4083-8b7c-52b8ce95cfc8
 ---
 
 Major upgrade to cognitive-memory skill. Phase 1: Rich edges as first-class markdown files in graph/edges/ with bidirectional frontmatter refs (edge_id field). relate() returns edge_id string instead of bool. Cascade deletion on memory delete. CLI: edge-get, edge-search, edge-update, edge-delete. Phase 2: Hybrid embedding providers (Ollama local + OpenAI optional) with automatic fallback chain. _config.json stores provider settings (gitignored). Dimension mismatch safety triggers re-embedding on provider switch. Phase 3: MCP server (mcp_server.py) with 18 tools via JSON-RPC 2.0 stdio protocol. Registered in ~/.claude.json. Phase 4: Updated SKILL.md, SCHEMA.md, feature.json to v3.0.0. Index version bumped from 1 to 2 (adds edges section). All stdlib-only, no external dependencies.