chore: auto-commit (57 archivos)

- frontend/functions/core/format_datetime_short.md
- frontend/functions/core/format_datetime_short.test.ts
- frontend/functions/core/format_datetime_short.ts
- frontend/functions/core/format_duration.md
- frontend/functions/core/format_duration.test.ts
- frontend/functions/core/format_duration.ts
- frontend/functions/core/month_grid.md
- frontend/functions/core/month_grid.test.ts
- frontend/functions/core/month_grid.ts
- frontend/functions/core/string_hash_palette.md
- ...

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

functions/browser/cdp_set_cookie.go

@@ -0,0 +1,22 @@
+package browser
+
+// CdpSetCookie establece una cookie en el browser via Network.setCookie.
+// Util para autenticar tests e2e contra apps con sesion HttpOnly: hacer login
+// HTTP en el test, capturar el Set-Cookie, y propagar al browser antes de navegar.
+//
+// name/value/domain son obligatorios. path por defecto "/". httpOnly true por
+// defecto (replica HttpOnly de la app). secure y sameSite opcionales.
+func CdpSetCookie(c *CDPConn, name, value, domain, path string, httpOnly bool) error {
+	if path == "" {
+		path = "/"
+	}
+	params := map[string]any{
+		"name":     name,
+		"value":    value,
+		"domain":   domain,
+		"path":     path,
+		"httpOnly": httpOnly,
+	}
+	_, err := c.sendCDP("Network.setCookie", params)
+	return err
+}