feat(claude-code): add yoloAlias option

src/claude-code/NOTES.md

@@ -13,6 +13,14 @@ By default, the `latest` release channel is installed. You can also specify:
 
 The channel chosen at install time becomes the default for auto-updates.
 
+## YOLO Alias
+
+When `yoloAlias` is set to `true`, a `yolo` shell alias is created that expands to `claude --allow-dangerously-skip-permissions`. The alias is configured for bash, zsh, and fish.
+
+> **Warning:** `--allow-dangerously-skip-permissions` disables Claude Code's normal permission checks and confirmation prompts for potentially sensitive actions. This meaningfully reduces safety and may allow unintended or unsafe changes, so only enable `yoloAlias` if you understand and accept the security implications.
+>
+> If a `yolo` alias or function already exists in your shell configuration, the installer will skip adding it to avoid overwriting your setup.
+
 ## Auto-Updates
 
 The native binary automatically updates in the background. Update checks are performed on startup and periodically while running. To disable auto-updates, set the `DISABLE_AUTOUPDATER=1` environment variable.

src/claude-code/devcontainer-feature.json

@@ -8,6 +8,11 @@
       "type": "string",
       "default": "latest",
       "description": "Version to install. Use 'latest', 'stable', or a specific semver (e.g. '1.0.58')."
+    },
+    "yoloAlias": {
+      "type": "boolean",
+      "default": false,
+      "description": "Create a 'yolo' shell alias for 'claude --allow-dangerously-skip-permissions' in bash, zsh, and fish."
     }
   },
   "customizations": {

src/claude-code/install.sh

@@ -53,4 +53,53 @@ if [ -f "$INSTALL_HOME/.local/bin/claude" ] && [ ! -f /usr/local/bin/claude ]; t
     echo "Symlinked claude to /usr/local/bin/claude"
 fi
 
+# Set up yolo alias if requested
+if [ "${YOLOALIAS:-false}" = "true" ]; then
+    echo "Setting up 'yolo' alias..."
+    ALIAS_CMD='alias yolo="claude --allow-dangerously-skip-permissions"'
+    TARGET_HOME="${INSTALL_HOME}"
+
+    add_shell_alias_if_missing() {
+        local rc_file="$1"
+        local alias_name="$2"
+        local alias_cmd="$3"
+
+        if [ -f "$rc_file" ] && grep -Eq "^[[:space:]]*alias[[:space:]]+${alias_name}=" "$rc_file"; then
+            echo "Skipping $rc_file: alias '$alias_name' already exists."
+            return 0
+        fi
+
+        touch "$rc_file"
+        printf '%s\n' "$alias_cmd" >> "$rc_file"
+    }
+
+    # bash
+    add_shell_alias_if_missing "$TARGET_HOME/.bashrc" "yolo" "$ALIAS_CMD"
+
+    # zsh
+    add_shell_alias_if_missing "$TARGET_HOME/.zshrc" "yolo" "$ALIAS_CMD"
+
+    # fish — create a function file (idiomatic for fish)
+    FISH_FUNC_DIR="$TARGET_HOME/.config/fish/functions"
+    FISH_FUNC_FILE="$FISH_FUNC_DIR/yolo.fish"
+    if [ -f "$FISH_FUNC_FILE" ]; then
+        echo "Skipping $FISH_FUNC_FILE: function already exists."
+    else
+        mkdir -p "$FISH_FUNC_DIR"
+        cat > "$FISH_FUNC_FILE" << 'FISHEOF'
+function yolo --description "claude --allow-dangerously-skip-permissions"
+    claude --allow-dangerously-skip-permissions $argv
+end
+FISHEOF
+    fi
+
+    # Fix ownership if installing for non-root user
+    if [ -n "$_REMOTE_USER" ] && [ "$_REMOTE_USER" != "root" ]; then
+        chown "$_REMOTE_USER" "$TARGET_HOME/.bashrc" "$TARGET_HOME/.zshrc"
+        chown "$_REMOTE_USER" "$FISH_FUNC_FILE"
+    fi
+
+    echo "yolo alias configured for bash, zsh, and fish."
+fi
+
 echo "Claude Code installed successfully!"

test/claude-code/claude_code_yolo_alias.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# This test file will be executed against the 'claude_code_yolo_alias' scenario
+# to verify that the yolo alias is properly configured.
+
+set -e
+
+# Import test library bundled with the devcontainer CLI
+source dev-container-features-test-lib
+
+# Feature-specific tests
+check "claude command available" which claude
+check "yolo alias in bashrc" bash -c "grep -Fq 'claude --allow-dangerously-skip-permissions' ~/.bashrc"
+check "yolo alias in zshrc" bash -c "grep -Fq 'claude --allow-dangerously-skip-permissions' ~/.zshrc"
+check "fish yolo function body" bash -c "test -f ~/.config/fish/functions/yolo.fish && grep -Fq 'claude --allow-dangerously-skip-permissions' ~/.config/fish/functions/yolo.fish"
+check "yolo resolves in bash" bash -ic "type yolo"
+
+# Report results
+reportResults

test/claude-code/scenarios.json

@@ -19,5 +19,13 @@
         "features": {
             "claude-code": {}
         }
+    },
+    "claude_code_yolo_alias": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
+        "features": {
+            "claude-code": {
+                "yoloAlias": true
+            }
+        }
     }
 }