diff --git a/dashboard/screenshot-interact.mjs b/dashboard/screenshot-interact.mjs
index 037ca53..9d3abd6 100644
--- a/dashboard/screenshot-interact.mjs
+++ b/dashboard/screenshot-interact.mjs
@@ -43,6 +43,7 @@ for (const action of actions) {
   } else if (action.startsWith('search:')) {
     const query = action.slice('search:'.length);
     const input = await page.$('input[placeholder="Search memories..."]');
+    if (!input) { console.error(`search: input not found for "${query}"`); continue; }
     await input.type(query, { delay: 30 });
     await new Promise((r) => setTimeout(r, 900));
   } else if (action.startsWith('click:')) {
diff --git a/dashboard/server.py b/dashboard/server.py
index 9144ae5..a7fbd54 100644
--- a/dashboard/server.py
+++ b/dashboard/server.py
@@ -22,8 +22,8 @@
 def spa(full_path: str):
     if not DIST_DIR.exists():
         raise HTTPException(503, "dashboard/dist not built yet - run `npm run build` in dashboard/")
-    candidate = DIST_DIR / full_path
-    if full_path and candidate.is_file():
+    candidate = (DIST_DIR / full_path).resolve()
+    if full_path and candidate.is_file() and candidate.is_relative_to(DIST_DIR.resolve()):
         return FileResponse(candidate)
     return FileResponse(DIST_DIR / "index.html")
 
diff --git a/scripts/check_package_boundaries.py b/scripts/check_package_boundaries.py
index 6475231..586bb9d 100644
--- a/scripts/check_package_boundaries.py
+++ b/scripts/check_package_boundaries.py
@@ -70,7 +70,7 @@ def main() -> int:
     problems = [
         f"{path.as_posix()}: modules live in a package named for their type; only main.py sits in app/."
         for path in APP.glob("*.py")
-        if path.name != "main.py"
+        if path.name not in ("main.py", "__init__.py")
     ]
     allowed = allowlist()
     found = edges()
diff --git a/services/mcp/memorygate_mcp.py b/services/mcp/memorygate_mcp.py
index 16d4fe1..8cdc9e5 100644
--- a/services/mcp/memorygate_mcp.py
+++ b/services/mcp/memorygate_mcp.py
@@ -16,7 +16,7 @@ def redirect_request(self, request, file_pointer, code, message, headers, new_ur
 TOOL = {
     "name": "memorygate_context",
     "description": "Retrieve bounded, evidence-aware personal memory context. Read-only; use it before answering personal questions.",
-    "inputSchema": {"type": "object", "properties": {"query": {"type": "string"}, "include_evidence": {"type": "boolean"}}, "required": ["query"]},
+    "inputSchema": {"type": "object", "additionalProperties": False, "properties": {"query": {"type": "string", "maxLength": 2000}, "include_evidence": {"type": "boolean"}}, "required": ["query"]},
 }
 
 EXPLORE = {
@@ -58,7 +58,10 @@ def exchange(path, payload):
 
 
 def context(arguments: dict) -> dict:
-    return exchange("context", {"query": arguments["query"], "compact": True,
+    query = arguments.get("query")
+    if not isinstance(query, str) or not query or len(query) > 2000:
+        raise ValueError("Invalid query")
+    return exchange("context", {"query": query, "compact": True,
         "max_items": 8, "include_evidence": bool(arguments.get("include_evidence", False))})
 
 
@@ -79,6 +82,9 @@ def main():
         request = {}
         try:
             request = json.loads(line)
+            if not isinstance(request, dict):
+                respond(None, error="Invalid request: batch requests are not supported")
+                continue
             method = request.get("method")
             params = request.get("params", {})
             if method == "initialize":
@@ -91,8 +97,10 @@ def main():
                     raise RuntimeError("unknown tool")
                 value = handler(params.get("arguments", {}))
                 respond(request.get("id"), {"content": [{"type": "text", "text": json.dumps(value)}]})
-            elif "id" in request:
+            elif method == "ping":
                 respond(request.get("id"), {})
+            elif "id" in request:
+                respond(request.get("id"), error="Method not found")
         except Exception:
             respond(request.get("id") if isinstance(request, dict) else None,
                     error="Memory request failed; check configuration, scope and arguments.")