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Summary of Significant Accounting Policies - Schedule of Other Current Assets (Details) - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Schedule Of Other Current Assets Abstract
Directors & officers insurance	$ 607,376
Total other assets	$ 607,376

X

- Definition

The amount of directors & officers insurance.

+ References

No definition available.

+ Details

Name:	sti_DirectorsampOfficersInsurance
Namespace Prefix:	sti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	sti_ScheduleOfOtherCurrentAssetsAbstract
Namespace Prefix:	sti_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of current assets classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant