.env becomes optional. A credential it does not provide (an absent file, an
absent or empty key) is asked, without echo: GITEA_TOKEN at the start,
GITHUB_PAT and GITHUB_USER once GitHub is chosen. An invalid value is asked
again and never shown; when input ends the run stops before any request.
Asked tokens are registered for redaction at once.
After the local project exists the script asks (default no) whether to
create a .env in it. On a yes it holds only the needed keys, is created
private (mode 600) from the start, is excluded from git through
.git/info/exclude (no tracked file changes), is never replaced without a
second yes and is never written when git tracks it. The summary names the
keys, never the values.
New library files credentials.sh and envfile.sh; README, .env.example and
the security decisions updated; tests cover every case.
Task: MIL-005#1
Task: MIL-005#2
Task: MIL-005#3
Task: MIL-005#4
Task: MIL-005#5
Closes#35Closes#36Closes#37Closes#38Closes#39
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
