Towel v0.1.0-alpha.1

Linux only. This prerelease carries no macOS artifact.

What's Changed

• Add comprehensive design documentation for Capshell by @luciobaiocchi in #1
• Claude/opinione richiesta 6s34nt by @luciobaiocchi in #2
• Harden Mithril and rename the CLI to mtl by @luciobaiocchi in #3
• Protect project application credentials at runtime by @luciobaiocchi in #22
• Rename project to Towel and add release foundation by @luciobaiocchi in #23
• Add macOS named project sessions by @luciobaiocchi in #32
• Add Linux packaging and rewrite the README purpose by @luciobaiocchi in #35
• Linux age vault, packaging, and release setup by @luciobaiocchi in #37
• Release 0.1.0-alpha.1 by @luciobaiocchi in #38
• Add an install section to the site by @luciobaiocchi in #39
• Let the workflow create the release tag by @luciobaiocchi in #40

Full Changelog: https://github.com/luciobaiocchi/twl/commits/v0.1.0-alpha.1