Fix malformed JSON in 02_project_overview.ipynb to unblock nbval collection in CI

Author: abrookins

python-recipes/context-engineering/notebooks/section-1-introduction/02_project_overview.ipynb

@@ -133,7 +133,7 @@
         "    print(r.code, r.title)\n",
         "```\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -166,7 +166,7 @@
         "    print(c.code, c.title)\n",
         "```\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -193,7 +193,7 @@
         "related = mem.search(entity_id=\"alex\", query=\"online\", k=3)\n",
         "```\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -232,7 +232,7 @@
         "\n",
         "Tools: search courses, get recommendations, store preferences/goals, fetch student context.\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -289,7 +289,7 @@
         "- Sub\u2011ms Redis ops; typical vector search <50 ms; retrieval <100 ms; end\u2011to\u2011end response <2 s\n",
         "- Scales horizontally with Redis and stateless workers\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -359,7 +359,7 @@
         "- Try different queries and explore the code\n",
         "- Extend the agent with new tools\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -385,7 +385,7 @@
         "- Performance tuning for vector search and retrieval\n",
         "- Robustness: error handling, persistence, observability\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},
@@ -420,7 +420,7 @@
         "  - Tool optimization\n",
         "  - Crafting data for LLMs\n"
       ]
-    }
+    },
     {
       "cell_type": "markdown",
       "metadata": {},