chore(app): update unstable version metadata

Update kernel-full-feature-matrix.yml

Add NTsync and networking workflow toggles

Sync Droidspaces support and restore KPM semantics

Add build time preview

fix: make manager artifact matching case-insensitive

chore: resolve Node.js warnings; upgrade all Custom Actions used in t…

…he workflow to versions that use Node.js 24

feat: optimize 5.x timestamp fix with classic perl regex

fix: add missing SUSFS header includes for 6.1.141 and 6.6.50-92

Extend base.c.patch coverage to include 6.1.141 which fell in the gap
between <=138 and >=145 conditions. Add safeguard to inject
<linux/susfs.h> when SUSFS_IS_INODE_SUS_MAP or SUSFS_IS_INODE_OPEN_REDIRECT
symbols are present but undeclared in 6.6.50-92 builds.

docs: convert raw URLs to markdown links in README