Skip interactive setup wizard in non-TTY environments (#353)

* Skip interactive setup wizard in non-TTY environments

When the install script runs without a terminal (e.g. from Claude Code,
CI, or piped input), the interactive setup wizard hangs on TUI prompts.

Detect non-TTY and run `basecamp setup claude` non-interactively instead,
which installs the agent skill, Claude plugin, and marketplace registration
without prompts. Auth remains the only manual step.

Also adds BASECAMP_SKIP_SETUP=1 env var for explicit opt-out when a TTY
is present.

* Let stderr through from non-interactive setup claude

Remove 2>/dev/null so failures from 'basecamp setup claude' are visible
and diagnosable. Keep || true since the agent setup is best-effort — the
binary install already succeeded at this point.

Author: robzolkos

install.md

@@ -22,6 +22,8 @@ Run this in your terminal:
 curl -fsSL https://basecamp.com/install-cli | bash
 ```
 
+> **Note:** The install script auto-detects non-interactive environments (CI, piped input, coding agents) and skips the interactive setup wizard. You can also explicitly skip it with `BASECAMP_SKIP_SETUP=1`.
+
 Alternatively install manually:
 
 ### Option A: Homebrew (macOS/Linux) — Recommended

scripts/install.sh

@@ -5,8 +5,9 @@
 #   curl -fsSL https://raw.githubusercontent.com/basecamp/basecamp-cli/main/scripts/install.sh | bash
 #
 # Options (via environment):
-#   BASECAMP_BIN_DIR  Where to install binary (default: ~/.local/bin)
-#   BASECAMP_VERSION  Specific version to install (default: latest)
+#   BASECAMP_BIN_DIR    Where to install binary (default: ~/.local/bin)
+#   BASECAMP_VERSION    Specific version to install (default: latest)
+#   BASECAMP_SKIP_SETUP Set to 1 to skip the interactive setup wizard after install
 
 set -euo pipefail
 
@@ -328,7 +329,30 @@ main() {
   verify_install "$platform"
 
   echo ""
-  "$BIN_DIR/$binary_name" setup
+
+  # Run interactive setup wizard only when stdin is a TTY and not explicitly skipped.
+  # Non-interactive environments (CI, piped input, coding agents like Claude Code)
+  # get the agent skill installed and next-step instructions instead — the wizard
+  # requires interactive prompts that don't work without a terminal.
+  if [[ "${BASECAMP_SKIP_SETUP:-}" == "1" ]]; then
+    step "Skipping setup wizard (BASECAMP_SKIP_SETUP=1)"
+    "$BIN_DIR/$binary_name" setup claude || true
+    echo ""
+    echo "  Next steps:"
+    echo "    $(bold "basecamp auth login")        Authenticate with Basecamp"
+    echo "    $(bold "basecamp setup")             Run interactive setup wizard"
+    echo ""
+  elif [[ -t 0 ]] && [[ -t 1 ]]; then
+    "$BIN_DIR/$binary_name" setup
+  else
+    info "Skipping interactive setup (no terminal detected)."
+    "$BIN_DIR/$binary_name" setup claude || true
+    echo ""
+    echo "  Next steps:"
+    echo "    $(bold "basecamp auth login")        Authenticate with Basecamp"
+    echo "    $(bold "basecamp setup")             Run interactive setup wizard"
+    echo ""
+  fi
 }
 
 main "$@"