Fix handle_before_tool dict-truthy bug + MCP response size limit

.github/workflows/ci.yml

@@ -47,6 +47,9 @@ jobs:
     timeout-minutes: 10
     needs: [test]
     if: github.event_name == 'pull_request'
+    permissions:
+      pull-requests: write
+      contents: read
 
     steps:
       - uses: actions/checkout@v4

src/eling/as_brain/mcp_server.py

@@ -468,6 +468,9 @@ def _handle_tool_call(rid: int | str | None, params: dict) -> dict:
     def ok(data: Any) -> dict:
         try:
             text = json.dumps(data, default=str)
+            # Limit response to 50KB to prevent provider context overflow
+            if len(text) > 50_000:
+                text = json.dumps({"warning": "response truncated (50KB limit)", "truncated": True}, default=str)
         except Exception:
             text = json.dumps({"error": "result not serializable", "raw": str(data)[:500]})
         return {

src/eling/layers/notion.py

@@ -47,13 +47,21 @@ def __init__(
 
     @property
     def available(self) -> bool:
+        global _HAS_HTTPX
         if _HAS_HTTPX is None:
-            _require_httpx()
+            try:
+                _require_httpx()
+            except RuntimeError:
+                _HAS_HTTPX = False
         return _HAS_HTTPX and bool(self.api_key)
 
     def _has_httpx(self) -> bool:
+        global _HAS_HTTPX
         if _HAS_HTTPX is None:
-            _require_httpx()
+            try:
+                _require_httpx()
+            except RuntimeError:
+                _HAS_HTTPX = False
         return bool(_HAS_HTTPX)
 
     def _get_client(self) -> "httpx.Client":

src/eling/zero_plugin/eling-hook.py

@@ -42,8 +42,9 @@ def handle_before_tool(payload: dict) -> str | None:
     try:
         brain = get_brain()
         results = brain.recall(query, limit=3)
-        if results:
-            return f"eling: recalled {len(results)} memory items for {tool}"
+        merged = results.get("merged", [])
+        if merged:
+            return f"eling: recalled {len(merged)} memory items for {tool}"
     except Exception as e:
         log.warning("before_tool recall failed: %s", e)
     return None
@@ -58,6 +59,7 @@ def handle_after_tool(payload: dict) -> str | None:
     result = payload.get("result", "") or payload.get("output", "")
 
     msgs = []
+    brain = None
 
     # Remember file edits as facts
     if changed_files and status in ("success", "ok", "", None):
@@ -78,7 +80,8 @@ def handle_after_tool(payload: dict) -> str | None:
     # Remember tool results as observations
     if result and tool and status in ("success", "ok", "", None):
         try:
-            brain = get_brain()
+            if brain is None:
+                brain = get_brain()
             summary = str(result)[:300]
             brain.remember(
                 f"Tool [{tool}] returned: {summary}",