Remove the memory extra: it installed neo4j with nothing behind it

README.md

@@ -417,7 +417,7 @@ Claims carry provenance — source, observation time, and the run that produced
 
 **Contradiction detection reports; it never resolves.** A new claim sharing a normalized (subject, predicate) with a stored one and differing in object is flagged. That is a structural test: it will not relate "is fast" to "is slow", will not match a rephrased object, and *will* flag a legitimately multi-valued predicate as disagreement. Auto-superseding on a detected conflict would delete half a multi-valued fact inside the one subsystem whose promise is that facts are never destroyed, so a caller supersedes on purpose or not at all.
 
-The limit to know: **the in-process store is still the default.** `grapharc demo stage6` and `grapharc demo capstone` keep claims in a dict for the life of the process unless you pass `--memory PATH`, which hands them the `SQLiteMemoryStore` — verified to survive across two separate interpreters, not just two calls in one. In-process stays the default so a plain run writes nothing you did not ask for. `pyproject.toml` also declares a `memory` extra for Neo4j that has no implementation behind it.
+The limit to know: **the in-process store is still the default.** `grapharc demo stage6` and `grapharc demo capstone` keep claims in a dict for the life of the process unless you pass `--memory PATH`, which hands them the `SQLiteMemoryStore` — verified to survive across two separate interpreters, not just two calls in one. In-process stays the default so a plain run writes nothing you did not ask for. The durable stores that exist are `SQLiteMemoryStore` (no extra needed) and `LadybugMemoryStore` (the `ladybug` extra); there is no extra beyond those.
 
 ## Sessions, the HTTP API, and policy
 

ROADMAP.md

@@ -384,7 +384,8 @@ Everything here works and nothing calls it.
 - [x] **8.7 — Hand a durable store to the shipped graphs.** `grapharc run
       --memory PATH` gives `stage6` and `capstone` the `SQLiteMemoryStore`; the
       in-process one remains the default so a plain run stays hermetic. The
-      `memory` extra still names Neo4j with nothing importing it.
+      `memory` extra that named Neo4j with nothing importing it was removed;
+      a Neo4j-backed store would bring its own extra with it.
 
 ## 9. Triggers & surfaces — `[~] ~55%`
 

pyproject.toml

@@ -85,11 +85,6 @@ server = [
 mcp = [
     "mcp>=1.2",
 ]
-# Neo4j-backed claim store (ROADMAP 8.x). Nothing imports `neo4j` today; the
-# durable store that does exist is SQLite-backed and needs no extra.
-memory = [
-    "neo4j>=5.20",
-]
 # LadybugDB-backed claim store — grapharc/memory/ladybug_store.py imports this
 # one, unlike the `memory` extra above. The distribution is `real-ladybug`, not
 # `ladybug`: the latter name belongs to Ladybug Tools, an unrelated
@@ -115,7 +110,7 @@ slack = [
 ]
 # Everything above. Self-referential so it cannot drift out of sync.
 all = [
-    "grapharc[api,ladybug,mcp,memory,ollama,openai,openrouter,otel,server,slack]",
+    "grapharc[api,ladybug,mcp,ollama,openai,openrouter,otel,server,slack]",
 ]
 
 [dependency-groups]