- flake.nix: replace tea with fgj (fetchurl of v0.4.0 linux_amd64 binary)
- flake.nix shellHook: export IN_NIX_SHELL=1 so that nix develop --command
sets the variable that _preflight checks (nix develop does not set it
automatically, unlike the old nix-shell)
- Taskfile.yml _preflight: use IN_NIX_SHELL check instead of DIRENV_DIR,
which never worked in CI
- scripts/ci_logs.sh + task ci-logs: fetch raw Codeberg Actions job logs
from the web-UI endpoint (API endpoint not available on Codeberg 15.0.0)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>