chore: standardize shebangs, fix lint target, add .editorconfig

- Change all script shebangs to #!/usr/bin/env bash for portability
  (heredocs writing to installed systems keep #!/bin/bash)
- Remove || true from Makefile lint target so shellcheck errors fail the build
- Add .editorconfig for consistent formatting across editors

11 files changed, 33 insertions, 10 deletions

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..acd3686
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,23 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+
+[*.sh]
+indent_style = space
+indent_size = 4
+
+[Makefile]
+indent_style = tab
+
+[*.conf]
+indent_style = space
+indent_size = 4
+
+[*.org]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = false
diff --git a/Makefile b/Makefile
index 2a8fcfe..97be28d 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ all: lint build
 # Lint all bash scripts
 lint:
 	@echo "==> Running shellcheck..."
-	@shellcheck -x build.sh scripts/*.sh custom/archangel custom/zfsrollback custom/zfssnapshot custom/lib/*.sh || true
+	@shellcheck -x build.sh scripts/*.sh custom/archangel custom/zfsrollback custom/zfssnapshot custom/lib/*.sh
 	@echo "==> Shellcheck complete"
 
 # Build the ISO (requires sudo)
diff --git a/build.sh b/build.sh
index f17ee62..a169cae 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # build.sh - Build the custom Arch ZFS installation ISO
 # Must be run as root
 #
diff --git a/custom/archangel b/custom/archangel
index 430bc4a..4bb19d9 100755
--- a/custom/archangel
+++ b/custom/archangel
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # archangel - Arch Linux Installer with Snapshot-Based Recovery
 # Craig Jennings <c@cjennings.net>
 #
diff --git a/custom/install-claude b/custom/install-claude
index e467108..f312861 100755
--- a/custom/install-claude
+++ b/custom/install-claude
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # install-claude - Install Claude Code CLI
 # Run this if you need AI assistance during installation
 
diff --git a/scripts/boot-vm.sh b/scripts/boot-vm.sh
index 6eb8eea..99686e3 100755
--- a/scripts/boot-vm.sh
+++ b/scripts/boot-vm.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # boot-vm.sh - Boot the VM from disk if installed, otherwise from ISO
 #
 # This is a simple wrapper that does the right thing:
diff --git a/scripts/build-release b/scripts/build-release
index bdd6711..035c4fe 100755
--- a/scripts/build-release
+++ b/scripts/build-release
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # build-release - Build and distribute the archangel ISO
 #
 # Usage:
diff --git a/scripts/full-test.sh b/scripts/full-test.sh
index fe164d1..7728859 100755
--- a/scripts/full-test.sh
+++ b/scripts/full-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # full-test.sh - Comprehensive installation testing for archangel ISO
 #
 # Runs automated installation tests for all disk configurations:
diff --git a/scripts/sanity-test.sh b/scripts/sanity-test.sh
index 9248da1..1973ee6 100755
--- a/scripts/sanity-test.sh
+++ b/scripts/sanity-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # sanity-test.sh - Automated sanity test for archangel ISO
 #
 # Boots the ISO in a headless QEMU VM, waits for SSH, runs verification
diff --git a/scripts/test-install.sh b/scripts/test-install.sh
index 9240c12..4f9f0d8 100755
--- a/scripts/test-install.sh
+++ b/scripts/test-install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # test-install.sh - Automated installation testing for archangel
 #
 # Runs unattended installs in VMs using test config files.
diff --git a/scripts/test-vm.sh b/scripts/test-vm.sh
index f2a4a00..2f93bd2 100755
--- a/scripts/test-vm.sh
+++ b/scripts/test-vm.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # test-vm.sh - Test the archangel ISO in a QEMU virtual machine
 #
 # Usage: