Downgrade version from 1.5.1 to 1.5.0

Delete tool usage notes from CLAUDE.md

Bump version from 1.5.0 to 1.5.1

Update CLAUDE.md with tool usage notes

Tighten opening paragraph wording

Clarify GitHub template repo flow in opening paragraph

Update README wording per user edits

Clarify GitHub template repo flow in opening paragraph

Reframe Cosmo as identity for Claude Code delivered as template

Bump version to 1.5.0

Update READMEs to reflect CLAUDE.md and LICENSE

Clarify cosmo start trigger and fix inconsistencies in README

Add CLAUDE.md for automatic project instructions

Clarify Claude Code as primary environment in README

Replace release notes with link to GitHub releases