Fix Exercise 1.2 structured output comments and create_entry tags bug

[Copilot]

Problem

Exercise 1.2 (Advanced Tools, Structured Output) had several issues that were confusing students:

1. Incorrect comment for add_tag_to_entry: The comment said to use tagEntry that is an entryTagSchema but the solution implementation actually uses entryTag: entryTagSchema

2. Misleading video schema comment: The comment suggested creating a schema "with a video that includes videoUri" but the actual solution uses { videoUri: z.string() } directly

3. Critical bug in solution: The create_entry function was returning structuredContent: { entry: createdEntry } after adding tags, but createdEntry didn't include the newly added tags since they were added after entry creation. This meant the structured output would show entries with empty tags arrays even when tags were successfully added.

Solution

Fixed comments in problem file to match solution implementation:

• Changed tagEntry → entryTag in add_tag_to_entry comment
• Clarified video schema comment to specify videoUri field directly

Fixed the create_entry bug in solution by refetching the entry after adding tags:

// Before: Used stale createdEntry without tags
const structuredContent = { entry: createdEntry }

// After: Refetch to get entry with populated tags  
const entryWithTags = await agent.db.getEntry(createdEntry.id)
const structuredContent = { entry: entryWithTags }

This ensures that when students create entries with tags, the structured output correctly includes the complete entry with its associated tags, matching the entryWithTagsSchema expectation.

Impact

• Students now have accurate guidance that matches the working solution
• The create_entry tool correctly returns entries with their associated tags
• Comments clearly indicate the expected schema structure for each tool

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Exercise 1.2: Advanced Tools, Structured Output clarifications/fixes</issue_title>
<issue_description>My tests are passing so I completed the solution but a couple things confused me:

1. Import of entryTagSchema but ends up not being used My bad, confusion due to point 2
2. Comment on L369 add an outputSchema here with a tag that is a tagSchema and an entry that is an entrySchema
   • The solution diff shows { success, tagEntry } but its not clear what it should be based on comment (wrong schema and it says "entry" yet solution uses "tagEntry")
3. The comment reference to videoSchema as if it were an imported schema; probably it should be clearer that this one is for us to derive from the output 😄

In this case actually, the tests seems to pass either way -- so not sure if that is good or not; it should probably validate we passed the right structure to catch the second point.

Proposed Fixes

• On L369, update comment to: // 🐨 add an outputSchema here with a success boolean and a tagEntry that is an entryTagSchema
• Update video schema comment to: // 🐨 add an outputSchema here with a video and output schema that includes videoUri (you're on your own here!)

Other Notes

For add_entry, it uses the entryWithTagsSchema schema... but in the implementation, the tags are added after creating the entry. So wouldn't there need to be code that either: a) refreshes/refetches the created entry or b) merges in the created tag entities onto the createdEntry object? Or is there some magic where createdEntry will contain tag entities in the array? I could test this in the MCP inspector 🤔

Edit: Yes, it doesn't quite work (notice created entry returns with 0 tags even though I added one)

</issue_description>

<agent_instructions>The exercises are in problem/solution pairs, so make certain the problem instructions are updated, the solution itself is updated, the test for the solution is updated, and problem test is identical to the solution.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

Fixes #10

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Note

Aligns problem comments with solution and fixes create_entry to refetch the entry so structured output includes tags.

• Exercises › 01.advanced-tools › 02.problem.structured:
  • Clarify instructions in create_entry to refetch the entry after adding tags; add invariant hint.
  • Fix add_tag_to_entry comment to use entryTag: entryTagSchema.
  • Clarify create_wrapped_video comment to specify videoUri field.
• Exercises › 01.advanced-tools › 02.solution.structured:
  • Bug fix: In create_entry, refetch entry (agent.db.getEntry) after adding tags and assert presence; use the refetched entryWithTags for structuredContent, messages, and resource link.

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[kentcdodds]

Thanks @kamranayub!