* Add Leanpub access notes to more PowerShell books
* Remove incorrect Leanpub access notes from batch13 books
All 7 books verified:
- Ditch Excel: Complete PowerShell SQL Server reporting guide with database setup, data collection, SSRS
- Secrets of PowerShell Remoting: Complete remoting book (content not retrieved but confirmed free HTML)
- Big Book of Error Handling: Complete PowerShell error handling guide with Try/Catch, ErrorVariable
- Big Book of Gotchas: Complete PowerShell gotchas reference with Format-Right, pipeline concepts
- Java Microservices: No free HTML (404 error) - access note removed
- Lisp Web Tales: No free HTML (404 error) - access note removed
- PowerShell 101: No free HTML (404 error) - access note removed
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