feat: add LostFound Match Agent template

[Rewant05]

Summary

This PR adds LostFound Match Agent, a focused AgentKit template that compares lost item reports with found item reports and generates a structured match recommendation.

Problem

Lost and found teams in campuses, airports, metro stations, malls, hotels, and other public places often receive messy, incomplete, or differently written item descriptions. Manual matching is slow and inconsistent.

Solution

The agent compares lost and found reports using:

• item type
• color
• brand/material
• unique identifiers
• location similarity
• date/time proximity
• semantic similarity
• conflicting details

It returns a structured JSON response containing:

• match score
• decision
• reasoning
• matching signals
• conflicting signals
• verification questions
• recommended next action

Why this is useful

This helps lost and found administrators quickly prioritize likely matches while keeping manual verification in the loop before returning any item.

Contribution Type

• Kit
• Bundle
• Template

Challenge Label

agentkit-challenge

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[github-actions]

PR Validation Results

New Contributions Detected

• Kit: kits/lostfound-match-agent/README.md
• Kit: kits/lostfound-match-agent/constitutions
• Kit: kits/lostfound-match-agent/agent.md
• Kit: kits/lostfound-match-agent/model-configs
• Kit: kits/lostfound-match-agent/flows
• Kit: kits/lostfound-match-agent/lamatic.config.ts
• Kit: kits/lostfound-match-agent/prompts
• Kit: kits/lostfound-match-agent/FLOW.md

Check Results

Check	Status
No edits to existing projects	✅ Pass
Required root files present	❌ Fail
Flow folder structure valid	✅ Pass
No changes outside contribution dirs	✅ Pass

Errors

• ❌ Missing config.json in kits/lostfound-match-agent/README.md
• ❌ Missing README.md in kits/lostfound-match-agent/README.md
• ❌ Missing flows/ directory in kits/lostfound-match-agent/README.md
• ❌ Missing config.json in kits/lostfound-match-agent/constitutions
• ❌ Missing README.md in kits/lostfound-match-agent/constitutions
• ❌ Missing flows/ directory in kits/lostfound-match-agent/constitutions
• ❌ Missing config.json in kits/lostfound-match-agent/agent.md
• ❌ Missing README.md in kits/lostfound-match-agent/agent.md
• ❌ Missing flows/ directory in kits/lostfound-match-agent/agent.md
• ❌ Missing config.json in kits/lostfound-match-agent/model-configs
• ❌ Missing README.md in kits/lostfound-match-agent/model-configs
• ❌ Missing flows/ directory in kits/lostfound-match-agent/model-configs
• ❌ Missing config.json in kits/lostfound-match-agent/flows
• ❌ Missing README.md in kits/lostfound-match-agent/flows
• ❌ Missing flows/ directory in kits/lostfound-match-agent/flows
• ❌ Missing config.json in kits/lostfound-match-agent/lamatic.config.ts
• ❌ Missing README.md in kits/lostfound-match-agent/lamatic.config.ts
• ❌ Missing flows/ directory in kits/lostfound-match-agent/lamatic.config.ts
• ❌ Missing config.json in kits/lostfound-match-agent/prompts
• ❌ Missing README.md in kits/lostfound-match-agent/prompts
• ❌ Missing flows/ directory in kits/lostfound-match-agent/prompts
• ❌ Missing config.json in kits/lostfound-match-agent/FLOW.md
• ❌ Missing README.md in kits/lostfound-match-agent/FLOW.md
• ❌ Missing flows/ directory in kits/lostfound-match-agent/FLOW.md

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🛑 Please fix the errors above before this PR can be merged.

Refer to CONTRIBUTING.md and CLAUDE.md for the expected folder structure.