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Note 2 - Significant Accounting Policies (Details Textual)
 12 Months Ended
Mar. 01, 2022
USD ($)
ft²
Jul. 21, 2018
USD ($)
ft²
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Jul. 01, 2019
USD ($)
Operating Lease, Liability, Current     $ 0 $ 64,076  
Operating Lease, Liability, Noncurrent     0 198,972  
Operating Lease, Right-of-Use Asset     0 250,306  
Contract with Customer, Asset, after Allowance for Credit Loss, Current     428,585 181,680  
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent     0 108,052  
Advertising Expense     $ 36,080 $ 22,625  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.01 $ 0.01  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares     1,100,893 1,108,805  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares     0 0  
Minimum [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 4  
Maximum [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 10  
Located at 5258 South Commerce Drive [Member]          
Lessee, Operating Lease, Renewal Term (Year) 3 years   3 years    
Area of Real Estate Property (Square Foot) | ft² 5,000 9,800      
Operating Leases, Monthly Rent Expense $ 5,871 $ 10,200      
Lessee, Operating Lease, Term of Contract (Year)   3 years      
Percentage of Monthly Rent Increase Each Year 3.00%        
Operating Lease, Expense     $ 50,007    
Operating Lease, Liability     $ 0    
Cumulative Effect, Period of Adoption, Adjustment [Member]          
Operating Lease, Liability, Current         $ 82,517
Operating Lease, Liability, Noncurrent         760,172
Operating Lease, Right-of-Use Asset         $ 842,689
Lessee, Operating Lease, Renewal Term (Year)         3 years
Accounts Receivable [Member]          
Number of Major Customers     1    
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A & B [Member]          
Concentration Risk, Percentage     10.00%    
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A [Member]          
Accounts Receivable, after Allowance for Credit Loss     $ 962,300 $ 962,300