PR_26177_CHARLIE_013-sprites-import-preview-metadata-palette

[ToolboxAid]

Summary

• Adds selected sprite preview and metadata display for source, MIME/type, dimensions, size, updatedAt/updatedBy, and Palette/Colors keys.
• Adds duplicate through the Sprites create API so the server owns the new key.
• Adds replace-metadata through the Sprites update API.
• Shows binary storage import and Palette/Colors selection as explicit unavailable/display-only states until those API contracts exist.

Stack

• Base: PR_26177_CHARLIE_012-sprites-library-crud
• Depends on API foundation from PR_26177_CHARLIE_010-sprites-api-db-foundation for live backend behavior.

Validation

• git diff --check
• Inline style/script/handler scan for Sprites files
• Browser storage / forbidden local data pattern scan
• node ./node_modules/@playwright/test/cli.js test tests/playwright/tools/SpritesToolShell.spec.mjs --project=playwright --workers=1 --reporter=list (8 passed)

Artifacts

• tmp/PR_26177_CHARLIE_013-sprites-import-preview-metadata-palette_delta.zip
• docs_build/dev/reports/PR_26177_CHARLIE_013-sprites-import-preview-metadata-palette.md
• docs_build/dev/reports/codex_review.diff
• docs_build/dev/reports/codex_changed_files.txt

Draft until Owner review.