Nutrition skill end-to-end validation, 2026-04-13

Objective

Run one practical end-to-end validation against a real Sidney nutrition item to confirm that the new skill split is workable in practice.

Validated skills:

• skills/nutrition-intake/
• skills/nutrition-analysis/
• skills/nutrition-reply/

Test case

Source checks

Persistence source present

Pass.

Observed in the canonical daily log:

• Received: 2026-04-12 19:50 MDT
• Consumed: assumed 2026-04-12 19:50 MDT
• item description present
• media path present
• estimated macros present
• assumptions present
• practical implication present
• status marked complete

Media file present

Pass.

Verified file exists:

• athlete/logs/media/2026-04-12/04-sidney-chicken-potatoes-squash-peppers.jpg

Validation against nutrition-intake

Intake classification

Pass.

This item classifies cleanly as:

• new intake item
• photo-backed meal
• no later timing override required
• no return-media request
• no summary request

Persistence expectations

Pass.

The new nutrition-intake skill requires:

• canonical daily log exists
• item is stored under ## Nutrition
• media is copied when media exists
• received and consumed timing are captured as strongly as possible
• the item is not considered handled before the canonical write exists

This sample satisfies those conditions.

Heading and timing rules

Pass.

Observed behavior matches the new persistence guidance:

• heading uses ### 19:50
• received time is explicit
• consumed time defaults to receipt time because no athlete-stated override is present
• no invented alternate consumed time was introduced

Validation against nutrition-analysis

Can a specialist-ready handoff be built from the persisted record?

Pass.

A clean handoff can be built from the existing record without needing workflow detail from AGENTS.md.

Sample handoff payload

- athlete_username: sidney
- received_at: 2026-04-12 19:50 MDT
- consumed_at: assumed 2026-04-12 19:50 MDT
- effective_entry_date: 2026-04-12
- source_batch_id: 2026-04-12-19:50-single-item
- media_paths:
  - /athlete/logs/media/2026-04-12/04-sidney-chicken-potatoes-squash-peppers.jpg
- detected_items:
  - grilled chicken breast
  - 5 small potatoes
  - roasted squash
  - roasted peppers
- athlete_stated_items:
  - grilled chicken breast
  - 5 small potatoes
  - roasted squash
  - roasted peppers
- meal_role: dinner
- session_context: same-day post-ride recovery meal after a 3:00 endurance ride
- day_type: endurance-ride day
- dietary_compatibility: uncertain
- edamam_path: named-food lookup for chicken, potatoes, squash, peppers if lookup support is needed; no image-url path assumed
- open_assumptions:
  - chicken treated as lean breast rather than thigh or heavily glazed cut
  - vegetables treated as modest-oil roasted sides
  - water not counted because consumed volume was not confirmed
- open_questions:
  - none required for a practical coaching read

Evidence hierarchy check

Pass.

Evidence stack for this test case is coherent:

• athlete-stated item description, strong
• clear photo evidence, supporting
• no label-visible data for this item
• Edamam, if used, should support nutrient estimation only

Uncertainty handling check

Pass with one note.

Correct uncertainty posture under the new skill:

• portion and oil exposure still require estimate ranges
• dietary compatibility should stay uncertain unless ingredients or labels confirm more

Note:

• the existing daily-log record is strong on macros and assumptions, but it does not yet explicitly spell out a handoff-style dietary_compatibility field because that structure belongs to the new handoff model, not the old record format

Validation against nutrition-reply

Can a compliant athlete-facing reply be generated from the persisted record plus handoff?

Pass.

Dry-run reply body

That looks like a solid dinner and a meaningful recovery meal after the ride.

**Breakdown:**
You got a strong protein hit here, and the extra potato improves the carbohydrate support versus a lighter plate. This is a good-quality recovery dinner, but after a 3-hour endurance ride you could still benefit from a bit more easy carbohydrate if full glycogen restoration was the goal.

**Macros:**
- Energy: ~530-600 kcal
- Carbohydrate: ~45-55 g
- Protein: ~46-53 g
- Fat: ~14-20 g

**Daily totals (estimated):**
- Energy: ~1866-2086 kcal
- Carbohydrate: ~187-219.5 g
- Protein: ~92-105.5 g
- Fat: ~82-96 g

**Feedback:**
This is a strong dinner for protein and overall meal quality. The main limitation is still total carbohydrate replacement relative to the ride duration, not meal quality.

Reply compliance check

Pass.

The dry-run reply:

• contains no logging or file-path language
• uses the required section structure
• includes daily totals because this was not the first item of the day
• stays athlete-useful
• does not leak internal routing or persistence process

Skill-boundary check

nutrition-intake

Pass.

The skill boundary is clear enough in practice:

• it owns persistence and completion gates
• it does not need to carry detailed Edamam logic or athlete-facing reply formatting

nutrition-analysis

Pass.

The skill boundary is clear enough in practice:

• it owns evidence hierarchy, uncertainty, and specialist-ready context
• it does not need to own media copy or canonical write mechanics

nutrition-reply

Pass.

The skill remains appropriately separate:

• it governs athlete-facing wording
• it presumes persistence and coordination are already complete

Issues found

1. No blocking workflow failure found

Good result. The new split is workable.

2. One practical follow-up improvement

Recommended improvement:

• add one concise example handoff payload to skills/nutrition-analysis/references/data-contract.md so future runs have a concrete model to follow, not just field names

This is an enhancement, not a blocker.

Result

Overall result: pass

The new skill architecture is working conceptually and operationally for a real nutrition item.

What this test confirms:

• the persisted daily log can serve as the source of truth for intake validation
• nutrition-intake covers the persistence side cleanly
• nutrition-analysis can produce a specialist-ready context without re-expanding AGENTS.md
• nutrition-reply can generate a compliant athlete-facing message from the persisted record plus handoff context

Recommended next step

Implement one small improvement:

• add a concrete handoff example to skills/nutrition-analysis/references/data-contract.md

After that, the next stronger validation would be:

• run the same test on a more ambiguous mixed dish or a multi-photo batch with a later timing correction