diff --git a/crates/memoryd/tests/fixtures/honcho/30-workspace-search-limit.json b/crates/memoryd/tests/fixtures/honcho/30-workspace-search-limit.json
new file mode 100644
index 0000000..165f064
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/30-workspace-search-limit.json
@@ -0,0 +1,60 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe/search",
+    "body": {
+      "limit": 3,
+      "query": "tea"
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": [
+      {
+        "id": "W64n2LctkpvzRbhiE8QbO",
+        "content": "I prefer tea to coffee in the afternoon.",
+        "peer_id": "kyle",
+        "session_id": "s-probe-1",
+        "metadata": {
+          "turn": 1,
+          "agent": "boxmaker0",
+          "boxmaker_session": "s-probe-1"
+        },
+        "created_at": "2026-09-28T23:19:35.672689Z",
+        "workspace_id": "boxmaker-plan-probe",
+        "token_count": 9
+      },
+      {
+        "id": "tw-3haUPxs_KLwmFOeAUE",
+        "content": "I prefer tea to coffee in the afternoon.",
+        "peer_id": "kyle",
+        "session_id": "s-probe-1",
+        "metadata": {
+          "turn": 1,
+          "agent": "boxmaker0",
+          "boxmaker_session": "s-probe-1"
+        },
+        "created_at": "2026-09-28T23:19:18.844946Z",
+        "workspace_id": "boxmaker-plan-probe",
+        "token_count": 9
+      },
+      {
+        "id": "CuBlFsOvuOSPhdzBwjMJ8",
+        "content": "Noted: tea in the afternoon.",
+        "peer_id": "boxmaker0",
+        "session_id": "s-probe-1",
+        "metadata": {
+          "turn": 1,
+          "agent": "boxmaker0",
+          "boxmaker_session": "s-probe-1"
+        },
+        "created_at": "2026-09-28T23:19:35.672689Z",
+        "workspace_id": "boxmaker-plan-probe",
+        "token_count": 8
+      }
+    ]
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/31-workspace-search-no-match.json b/crates/memoryd/tests/fixtures/honcho/31-workspace-search-no-match.json
new file mode 100644
index 0000000..63bb982
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/31-workspace-search-no-match.json
@@ -0,0 +1,60 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe/search",
+    "body": {
+      "limit": 3,
+      "query": "zebra quantum"
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": [
+      {
+        "id": "tw-3haUPxs_KLwmFOeAUE",
+        "content": "I prefer tea to coffee in the afternoon.",
+        "peer_id": "kyle",
+        "session_id": "s-probe-1",
+        "metadata": {
+          "turn": 1,
+          "agent": "boxmaker0",
+          "boxmaker_session": "s-probe-1"
+        },
+        "created_at": "2026-09-28T23:19:18.844946Z",
+        "workspace_id": "boxmaker-plan-probe",
+        "token_count": 9
+      },
+      {
+        "id": "W64n2LctkpvzRbhiE8QbO",
+        "content": "I prefer tea to coffee in the afternoon.",
+        "peer_id": "kyle",
+        "session_id": "s-probe-1",
+        "metadata": {
+          "turn": 1,
+          "agent": "boxmaker0",
+          "boxmaker_session": "s-probe-1"
+        },
+        "created_at": "2026-09-28T23:19:35.672689Z",
+        "workspace_id": "boxmaker-plan-probe",
+        "token_count": 9
+      },
+      {
+        "id": "qrMdUuNLYyPGeT0rSFPHm",
+        "content": "Noted: tea in the afternoon.",
+        "peer_id": "boxmaker0",
+        "session_id": "s-probe-1",
+        "metadata": {
+          "turn": 1,
+          "agent": "boxmaker0",
+          "boxmaker_session": "s-probe-1"
+        },
+        "created_at": "2026-09-28T23:19:18.844946Z",
+        "workspace_id": "boxmaker-plan-probe",
+        "token_count": 8
+      }
+    ]
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/32-conclusions-query-owner.json b/crates/memoryd/tests/fixtures/honcho/32-conclusions-query-owner.json
new file mode 100644
index 0000000..3af0598
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/32-conclusions-query-owner.json
@@ -0,0 +1,33 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe/conclusions/query",
+    "body": {
+      "filters": {
+        "observed_id": "kyle",
+        "observer_id": "kyle"
+      },
+      "query": "tea",
+      "top_k": 5
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": [
+      {
+        "id": "9sd9LIrIT5ypnw3U8f44z",
+        "content": "Kyle prefers tea in the afternoon.",
+        "observer_id": "kyle",
+        "observed_id": "kyle",
+        "session_id": "s-probe-1",
+        "level": "explicit",
+        "source_ids": null,
+        "times_derived": 1,
+        "created_at": "2026-09-28T23:19:35.772085Z"
+      }
+    ]
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/33-conclusions-query-agent.json b/crates/memoryd/tests/fixtures/honcho/33-conclusions-query-agent.json
new file mode 100644
index 0000000..5ae64d9
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/33-conclusions-query-agent.json
@@ -0,0 +1,33 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe/conclusions/query",
+    "body": {
+      "filters": {
+        "observed_id": "boxmaker1",
+        "observer_id": "boxmaker1"
+      },
+      "query": "build cache",
+      "top_k": 5
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": [
+      {
+        "id": "vTmroB5LA6hJWOEtht278",
+        "content": "The build cache is cleared on Sundays.",
+        "observer_id": "boxmaker1",
+        "observed_id": "boxmaker1",
+        "session_id": "s-probe-2",
+        "level": "explicit",
+        "source_ids": null,
+        "times_derived": 1,
+        "created_at": "2026-09-28T23:19:35.772085Z"
+      }
+    ]
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/34-workspace-search-missing-workspace.json b/crates/memoryd/tests/fixtures/honcho/34-workspace-search-missing-workspace.json
new file mode 100644
index 0000000..34c27c9
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/34-workspace-search-missing-workspace.json
@@ -0,0 +1,17 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe-missing/search",
+    "body": {
+      "limit": 3,
+      "query": "tea"
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": []
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/35-conclusions-query-missing-workspace.json b/crates/memoryd/tests/fixtures/honcho/35-conclusions-query-missing-workspace.json
new file mode 100644
index 0000000..8d81690
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/35-conclusions-query-missing-workspace.json
@@ -0,0 +1,21 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe-missing/conclusions/query",
+    "body": {
+      "filters": {
+        "observed_id": "kyle",
+        "observer_id": "kyle"
+      },
+      "query": "tea",
+      "top_k": 5
+    }
+  },
+  "response": {
+    "status": 200,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": []
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/36-workspace-chat-missing-workspace.json b/crates/memoryd/tests/fixtures/honcho/36-workspace-chat-missing-workspace.json
new file mode 100644
index 0000000..e82f97c
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/36-workspace-chat-missing-workspace.json
@@ -0,0 +1,19 @@
+{
+  "request": {
+    "method": "POST",
+    "path": "/v3/workspaces/boxmaker-plan-probe-missing/chat",
+    "body": {
+      "query": "What does the owner drink?",
+      "reasoning_level": "minimal"
+    }
+  },
+  "response": {
+    "status": 404,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": {
+      "detail": "Workspace boxmaker-plan-probe-missing not found"
+    }
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/37-workspace-delete-missing.json b/crates/memoryd/tests/fixtures/honcho/37-workspace-delete-missing.json
new file mode 100644
index 0000000..d695866
--- /dev/null
+++ b/crates/memoryd/tests/fixtures/honcho/37-workspace-delete-missing.json
@@ -0,0 +1,16 @@
+{
+  "request": {
+    "method": "DELETE",
+    "path": "/v3/workspaces/boxmaker-plan-probe-missing",
+    "body": null
+  },
+  "response": {
+    "status": 404,
+    "headers": {
+      "content-type": "application/json"
+    },
+    "body": {
+      "detail": "Workspace boxmaker-plan-probe-missing not found"
+    }
+  }
+}
diff --git a/crates/memoryd/tests/fixtures/honcho/README.md b/crates/memoryd/tests/fixtures/honcho/README.md
index de4646b..e0b0250 100644
--- a/crates/memoryd/tests/fixtures/honcho/README.md
+++ b/crates/memoryd/tests/fixtures/honcho/README.md
@@ -5,3 +5,14 @@ design model for M5c-1, in a throwaway workspace, `boxmaker-plan-probe`, created
 afterwards. Each request is exactly what `roncho` 1.0.0's blocking client sends. Each file is
 `{"request": {"method", "path", "body"}, "response": {"status", "headers", "body"}}`. The fake
 Honcho server in `memoryd`'s tests answers from them. Do not edit.
+
+Files 30 to 37 were recorded the same way on 2026-09-28 for M5c-2, in the same throwaway workspace
+(again deleted afterwards), through a proxy that allowed no other workspace. What they show:
+
+- Search has no relevance cutoff: a query with no match (31) still returns the nearest messages.
+- A search or a conclusion query in a workspace that does not exist answers 200 with no hits (34,
+  35); only chat (36) and delete (37) answer 404.
+- The duplicate tea messages in 30 and 31 are real: the recording ran twice into one workspace.
+
+A chat at `reasoning: low` was recorded too and left out: on rift it returned the dialectic
+model's raw tool-call markup as its answer, not an answer.