Shell scripts use non-portable #!/bin/bash shebang

Problem

Several shell scripts in the repository use #!/bin/bash as the shebang, which fails on systems where bash is not at /bin/bash.

Error Example (NixOS)

/bin/sh: .../stop-hook.sh: /bin/bash: bad interpreter: No such file or directory

Affected Systems

• NixOS: bash at /run/current-system/sw/bin/bash
• Guix: non-FHS layout
• Any system without /bin/bash

Affected Files

Found 13 scripts with #!/bin/bash:

• .devcontainer/init-firewall.sh
• plugins/plugin-dev/skills/agent-development/scripts/validate-agent.sh
• plugins/plugin-dev/skills/hook-development/examples/load-context.sh
• plugins/plugin-dev/skills/hook-development/examples/validate-bash.sh
• plugins/plugin-dev/skills/hook-development/examples/validate-write.sh
• plugins/plugin-dev/skills/hook-development/scripts/hook-linter.sh
• plugins/plugin-dev/skills/hook-development/scripts/test-hook.sh
• plugins/plugin-dev/skills/hook-development/scripts/validate-hook-schema.sh
• plugins/plugin-dev/skills/plugin-settings/examples/read-settings-hook.sh
• plugins/plugin-dev/skills/plugin-settings/scripts/parse-frontmatter.sh
• plugins/plugin-dev/skills/plugin-settings/scripts/validate-settings.sh
• plugins/ralph-wiggum/hooks/stop-hook.sh
• plugins/ralph-wiggum/scripts/setup-ralph-loop.sh

Solution

Change shebangs from #!/bin/bash to #!/usr/bin/env bash.

This is the portable POSIX standard that finds bash via PATH, working on NixOS, Guix, macOS, FreeBSD, and standard Linux distributions.

Environment

• OS: NixOS (Linux 6.12.60-cachyos)
• Claude Code Version: current