feat: add @toon-format/toon dependency and integrate into OpenAI notebooks

- Updated deno.lock and package.json to include @toon-format/toon@^2.1.0.
- Modified background-openai.ipynb to handle error responses and adjust execution counts.
- Enhanced definitions-openai.ipynb to include additional metadata for perishables and origen schemas.
- Refactored embeddings-openai.ipynb to improve error handling and output formatting.
- Updated create-chat-conversation function to append messages and responses to conversations.
- Added SQL functions for appending conversation data to the database.

deno.lock

@@ -20,6 +20,7 @@
     "jsr:@zod/zod@^4.3.5": "4.3.5",
     "npm:@supabase/supabase-js@2": "2.90.1",
     "npm:@supabase/supabase-js@^2.90.1": "2.90.1",
+    "npm:@toon-format/toon@^2.1.0": "2.1.0",
     "npm:@types/bun@^1.3.5": "1.3.5",
     "npm:deno@^2.6.4": "2.6.4",
     "npm:openai@6.16.0": "6.16.0_zod@3.25.76",
@@ -182,6 +183,9 @@
         "@supabase/storage-js"
       ]
     },
+    "@toon-format/toon@2.1.0": {
+      "integrity": "sha512-JwWptdF5eOA0HaQxbKAzkpQtR4wSWTEfDlEy/y3/4okmOAX1qwnpLZMmtEWr+ncAhTTY1raCKH0kteHhSXnQqg=="
+    },
     "@types/bun@1.3.5": {
       "integrity": "sha512-RnygCqNrd3srIPEWBd5LFeUYG7plCoH2Yw9WaZGyNmdTEei+gWaHqydbaIRkIkcbXwhBT94q78QljxN0Sk838w==",
       "dependencies": [
@@ -515,8 +519,7 @@
         "minipass",
         "minizlib",
         "yallist"
-      ],
-      "deprecated": true
+      ]
     },
     "tr46@0.0.3": {
       "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
@@ -587,6 +590,7 @@
     "packageJson": {
       "dependencies": [
         "npm:@supabase/supabase-js@^2.90.1",
+        "npm:@toon-format/toon@^2.1.0",
         "npm:@types/bun@^1.3.5",
         "npm:deno@^2.6.4",
         "npm:openai@^6.16.0",