Add Agent 365 guide screenshot preview

[Alejandro Lopez (soyalejolopez)]

Summary

• Add a public-safe 1600 x 960 WebP screenshot (~100 KB) for the Microsoft Agent 365 Customer Implementation Guide.
• Render the preview between the resource description and About this resource.
• Reuse the existing viewer for mouse and keyboard activation, with descriptive alt text, responsive sizing, and reserved image dimensions to avoid layout shift.
• Add optional preview metadata validation and source-only catalog generator pass-through. Resources without preview metadata remain unchanged.
• Bump the guide PATCH version from 1.0.1 to 1.0.2 while preserving the published date. The guide product content is unchanged.

Files

• copilot-agent-strategy/agent-365-customer-implementation-guide/preview.webp
• copilot-agent-strategy/agent-365-customer-implementation-guide/README.md
• copilot-agent-strategy/agent-365-customer-implementation-guide/CHANGELOG.md
• docs/CATALOG-METADATA.md
• tools/catalog-build/index.js
• index.html

Validation

• Catalog metadata check passed for 31 resources.
• Verified the exact hash detail page at desktop and 390 px mobile widths with no horizontal overflow.
• Verified mouse, Enter, and Space open the existing interactive viewer.
• Verified navigation from a preview resource to a resource without a preview fully resets the preview state.
• Claude Opus 4.8 completed the UI implementation and final visual review.

Scope

This PR contains no analytics, consent, reporting, reaction/comment, credential, workflow, or generated catalog/statistics changes. Analytics audit follow-ups are separate and are not resolved by this PR.

Note

The screenshot is a static point-in-time preview and should be refreshed when the guide changes materially.

[github-actions]

🛰️ PR Sweeper report

Risk: 🟠 MEDIUM · Security gate: ✅ passing · Files: 6

🔒 Automated guardrails (authoritative)

	Category	Location	Finding
⚠️	file-policy	copilot-agent-strategy/agent-365-customer-implementation-guide/preview.webp	New binary file with unrecognised type ".webp" — verify it belongs in the catalog.
ℹ️	scope	—	Change(s) outside known content roots: index.html.

🤖 Dual-model AI review (advisory)

AI review unavailable for this run (models not reachable or no diff). Guardrails above are unaffected.

• GPT-class reviewer (openai/gpt-5): skipped — GitHub Models HTTP 410: {"error":{"code":"github_models_retirement_brownout","message":"GitHub Models is temporarily unavailable as part of a scheduled retirement brownout."}}

• Deep-reasoning reviewer (openai/o3): skipped — GitHub Models HTTP 410: {"error":{"code":"github_models_retirement_brownout","message":"GitHub Models is temporarily unavailable as part of a scheduled retirement brownout."}}

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The automated guardrails are authoritative and gate the security status. The AI review is advisory and never auto-merges. Thanks for contributing to FastTrack! 🛩️