Refactor local knowledge context API endpoint and update agent reason string

backend/agent/router.py

@@ -154,7 +154,7 @@ def _fast_path(
     if library_slug and mentions_knowledge:
         knowledge = _manifest_by_slug(manifests, "knowledge-answer")
         if knowledge:
-            return _workflow_result(knowledge, confidence=0.95, reason="The request explicitly refers to the selected knowledge database.")
+            return _workflow_result(knowledge, confidence=0.95, reason="The request explicitly refers to local knowledge.")
 
     if _GREETING_RE.match(text):
         direct = _manifest_by_slug(manifests, "input-output")

src/chatApi.js

@@ -18,10 +18,8 @@ export async function prepareStartupModels(apiBase) {
   return expectBackendJson(response)
 }
 
-export async function fetchLocalLibraryContext(apiBase, slug, prompt, signal) {
-  if (!slug) return { contextBlock: null, sources: [] }
-
-  const response = await fetch(`${apiBase}/libraries/${slug}/context`, {
+export async function fetchLocalLibraryContext(apiBase, prompt, signal) {
+  const response = await fetch(`${apiBase}/knowledge/context`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
     signal,