docs(resources): document Markdown image URI rewrites

[r266-tech]

Summary

• document that local Markdown image embeds are copied during resource ingest and rewritten to viking://... URIs after persistence
• cover both Markdown ![alt](...) references and HTML <img src="..."> embeds
• mirror the note in the English and Chinese resource API docs

Source

This follows #2557, which added local image ingestion and post-commit URI rewriting for Markdown directory and re-ingest flows.

Checks

• git diff --check

Dual KPI

Real value: users importing Markdown directories can predict what happens to local image references instead of assuming those links break or require manual upload.

Farming risk: low; this is a small bilingual docs-code drift update tied to a merged parser behavior, not formatting churn.

[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis ✅ 2557 - Fully compliant Compliant requirements: Document local Markdown image embeds are copied and rewritten to viking:// URIs on resource ingest Cover both Markdown and HTML formats Mirror the note in English and Chinese resource API docs

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🏅 Score: 100

🧪 No relevant tests

🔒 No security concerns identified

✅ No TODO sections

🔀 No multiple PR themes

⚡ No major issues detected

[github-actions]

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