docs: keep task guides current and remove duplicate version pages
docs: organize Wiki around installation build and deployment tasks
docs: publish v0.3.0 guided installation and native verification
docs: link changelog from wiki home
docs: add verified v0.2.3 source packaging guide
docs: recommend v0.2.3 and mark old guides as history
docs: publish v0.2.3 installation and release notes
docs: update install guide for v0.2.2
Document v0.2.1 installation and preserve v0.2.0 guide
Move build flow illustration into wiki
Use absolute links for wiki navigation
Clarify full-package checksum instructions
Start v0.2.0 user documentation