feat: add interactive fzf tools for chezmoi apply/show with shared utilities

- New chai function for interactive apply with multi-select and diff preview
- Enhanced chshow for browsing managed files with edit/view modes
- Shared fzf-utils.ts with standardized colors and chezmoi file parsing
- Bash version of fzf abbreviation search with Alt+A binding

home/dot_config/fish/functions/chai.fish.tmpl

@@ -0,0 +1,55 @@
+function chai --description "Interactive chezmoi apply with fzf diff preview"
+    # Get status data first (before fzf takes over TTY)
+    # Script outputs to stderr for "no changes" message, stdout for data
+    set -l data (fzf-chezmoi-apply.ts 2>/dev/null)
+    set -l script_status $status
+
+    # Handle error or no changes case
+    if test $script_status -ne 0
+        return 1
+    end
+
+    if test -z "$data"
+        echo "No changes to apply"
+        return 0
+    end
+
+    # Run fzf separately so it gets proper TTY access
+    set -l selected (printf '%s\n' $data | fzf \
+        --ansi \
+        --height=50% \
+        --reverse \
+        --delimiter='\t' \
+        --with-nth=4 \
+        --nth=1 \
+        --prompt='Apply Changes > ' \
+        --preview='chezmoi diff {1} 2>/dev/null | head -100' \
+        --preview-window=right:60%:wrap \
+        --multi \
+        --bind='ctrl-a:toggle-all' \
+        --marker='* ' \
+        --pointer='>' \
+        --header='Tab: toggle | Ctrl+A: all | Enter: apply')
+
+    if test $status -ne 0 -o -z "$selected"
+        echo "Cancelled"
+        return 1
+    end
+
+    # Apply selected files
+    set -l targets
+    for line in $selected
+        set -l target (string split \t $line)[1]
+        set -a targets $target
+    end
+
+    set -l count (count $targets)
+    echo "Applying $count file(s)..."
+
+    for target in $targets
+        echo "  $target"
+        chezmoi apply ~/$target
+    end
+
+    echo "Applied $count file(s)"
+end

home/dot_config/fish/functions/chshow.fish.tmpl

@@ -1,6 +1,41 @@
-function chshow --description "Show rendered chezmoi template via fzf"
-    set -l target (find {{ .chezmoi.sourceDir | quote }} -name "*.tmpl" -type f | fzf)
-    if test -n "$target"
-        cat $target | chezmoi execute-template
+function chshow --description "Browse chezmoi managed files with fzf preview"
+    # Get data from script first (before fzf takes over TTY)
+    set -l data (fzf-chezmoi-show.ts)
+    if test $status -ne 0 -o -z "$data"
+        return 1
+    end
+
+    # Run fzf separately so it gets proper TTY access
+    set -l result (printf '%s\n' $data | fzf \
+        --ansi \
+        --height=50% \
+        --reverse \
+        --delimiter='\t' \
+        --with-nth=4 \
+        --nth=1,2 \
+        --prompt='Chezmoi Files > ' \
+        --preview='chezmoi cat {1} 2>/dev/null || echo "Preview unavailable"' \
+        --preview-window=right:60%:wrap \
+        --expect='ctrl-e' \
+        --header='Enter: view | Ctrl+E: edit source')
+
+    if test $status -ne 0 -o -z "$result"
+        return
+    end
+
+    # Parse result: first line is key, second is selected item
+    set -l lines (string split \n $result)
+    set -l key $lines[1]
+    set -l selected $lines[2]
+
+    if test -n "$selected"
+        set -l target (string split \t $selected)[1]
+
+        if test "$key" = "ctrl-e"
+            chezmoi edit ~/$target
+        else
+            echo "─── Rendered: $target ───"
+            chezmoi cat $target 2>/dev/null || echo "Cannot render file (may be binary or encrypted)"
+        end
     end
 end