install.sh: banner, step-by-step output and highlighted next steps

[devin-ai-integration]

Summary

Makes the curl ... | sh installer output friendlier. Behaviour (download, checksum, PATH handling, receipt, marker file, flags) is unchanged; only presentation changed.

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  Requesty CLI installer

  ✓ Detected darwin/arm64
  ✓ Resolved latest release: v0.1.10
  Installing requesty v0.1.10
  ✓ Downloaded requesty_darwin_arm64.tar.gz
  ✓ Verified checksum
  ✓ Installed requesty to /Users/daniel/.requesty/bin/requesty
  ✓ Added /Users/daniel/.requesty/bin to PATH in /Users/daniel/.zshrc

  ✓ requesty v0.1.10 is ready

  │  Next steps
  │
  │  1. Reload your shell (or open a new terminal):
  │     source ~/.zshrc
  │  2. Start the CLI:
  │     requesty

Details worth knowing:

• setup_style enables ANSI colors only when [ -t 1 ], NO_COLOR is unset and TERM != dumb; ✓ ✗ │ fall back to * x | when the locale isn't UTF-8. Still plain POSIX sh.
• The "Next steps" block adapts: shows source <profile> (with $HOME shortened to ~) when a profile was modified, shows the export PATH=... line to add when the profile file doesn't exist (PATH_LINE), and only requesty when PATH already contains the install dir.
• The already-installed branch now prints the same summary block instead of a bare line.
• fail output is prefixed with a red ✗ error: and still goes to stderr.

Tested locally with sh, dash, in a pty (colors) and piped (no colors), fresh install / upgrade / already-installed / missing profile / 404 version.

Link to Devin session: https://app.devin.ai/sessions/aaf2a185ba7346f583e9c636d89c06fe
Open in Devin Desktop: https://app.devin.ai/desktop/session/aaf2a185ba7346f583e9c636d89c06fe?variant=devin
Requested by: @requesty-ditti

[devin-ai-integration]

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_{Updated 2026-09-06T09:55Z · last 30 days · data from Requesty}