PR_26179_CHARLIE_022-sprites-tool-shell

[ToolboxAid]

Summary

• Replaces the Sprites placeholder page with a Theme V2 Sprite Creator shell.
• Adds visible left tools, center pixel work area, right details/animation, and status regions.
• Updates Sprites registry metadata to use Creator-facing Sprite Creator language for the existing route.
• Adds targeted Playwright shell coverage for route load, no console errors, visible shell regions, and no placeholder/inline-style violations.

Validation

• node --check src/shared/toolbox/tool-metadata-inventory.js
• node --check dev/tests/playwright/tools/SpritesToolShell.spec.mjs
• git diff --check -- toolbox/sprites/index.html src/shared/toolbox/tool-metadata-inventory.js dev/tests/playwright/tools/SpritesToolShell.spec.mjs
• rg --pcre2 -n -i "Not implemented yet|future rebuild work|Static wireframe only|Plan sprite creation|<style|style=|<script(?![^>]+src=)|on(click|change|submit|input|load|error)=" toolbox/sprites/index.html
• npx playwright test dev/tests/playwright/tools/SpritesToolShell.spec.mjs --workers=1 --reporter=list PASS, 1 test passed

Notes

• docs_build/tool-planning/sprites/ from PR_26179_CHARLIE_021 was unavailable in local, remote, and GitHub branch/PR searches during startup.
• No stale PR PR_26177_CHARLIE_009-sprites-legacy-audit-plan #219-PR_26177_CHARLIE_018-sprites-testable-mvp-completion #228 implementation code was merged, cherry-picked, or copied.
• No runtime/API/database/schema/start_of_day changes.
• ZIP artifact: tmp/PR_26179_CHARLIE_022-sprites-tool-shell_delta.zip