feat: implement CSS sprite system for image optimization

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Reduces HTTP requests from 44+ individual images to 3 sprite sheets
(~93% reduction). Includes Go sprite generator tool, CSS classes,
template integration, and E2E tests.

- Add cmd/sprites/main.go for sprite generation (60x60px + 120x120px @2x)
- Add _sprites.css with responsive sizing and retina support
- Update templates to use sprites with logoIndex fallback
- Add Makefile targets: sprites, sprites-clean
- Add 9-test E2E suite for sprite functionality
- Add doc/22-SPRITES.md with usage documentation

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This commit is contained in:

juanatsap

2025-12-04 11:38:36 +00:00

parent 7727405c25

commit b5a50ca3ef

25 changed files with 2194 additions and 76 deletions

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static/dist/bundle.min.css

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