folderweb/AGENT.md
2026-01-14 14:40:30 +01:00

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## Philosophy
Minimal PHP for modern conveniences. Prioritize longevity (decade-scale maintainability) by avoiding volatile dependencies. Strictly add only what's essential—readable, simple, and future-proof.
## Core Constraints
**Minimalism:** Only essential tech (HTML, PHP 8.4+, CSS). No JS, frameworks, build tools, or package managers. Comments only for major sections.
**Frontend:**
- Classless, semantic HTML5
- Modern CSS: nesting, `oklch()`, grid, `clamp()`, logical props
- Responsive via fluid typography + flexible layouts
**Security:**
- Path validation blocks traversal
- Files restricted to document root
- Strict MIME types + no direct user-input execution
## Code Style
**PHP:** Modern syntax (arrow functions, null coalescing, match). Type hints where practical. Ternary for simple conditionals. Single-purpose functions.
**CSS:** Variables, native nesting, grid layouts. `clamp()` over `@media`. Relative units > pixels.
**Templates:** Escape output (`htmlspecialchars()` for UGC). Short echo tags (`<?= $var ?>`).