feat(init): interactive fzf worktree picker + fix zsh locale error (#134)

README.md

@@ -100,6 +100,7 @@ git gtr ai my-feature           # Start claude
 git gtr run my-feature npm test # Run tests
 
 # Navigate to worktree
+gtr cd                          # Interactive picker (requires fzf + shell integration)
 gtr cd my-feature               # Requires: eval "$(git gtr init bash)"
 cd "$(git gtr go my-feature)"   # Alternative without shell integration
 
@@ -217,10 +218,13 @@ cd "$(git gtr go 1)"             # Navigate to main repo
 eval "$(git gtr init bash)"
 
 # Then navigate with:
+gtr cd                # Interactive worktree picker (requires fzf)
 gtr cd my-feature
 gtr cd 1
 ```
 
+With [fzf](https://github.com/junegunn/fzf) installed, `gtr cd` (no arguments) opens a command palette with git log preview and keybindings: `ctrl-e` editor, `ctrl-a` AI, `ctrl-d` delete, `ctrl-y` copy, `ctrl-r` refresh.
+
 > **Note:** If `gtr` conflicts with another command (e.g., GNU `tr` from coreutils), use `--as` to pick a different name:
 >
 > ```bash

lib/commands/doctor.sh

@@ -88,7 +88,7 @@ cmd_doctor() {
   # Check hosting provider
   if [ -n "$repo_root" ]; then
     local provider
-    provider=$(detect_provider 2>/dev/null)
+    provider=$(detect_provider 2>/dev/null) || true
     if [ -n "$provider" ]; then
       echo "[OK] Provider: $provider"
       case "$provider" in
@@ -112,6 +112,13 @@ cmd_doctor() {
     fi
   fi
 
+  # Check fzf (optional, for interactive picker)
+  if command -v fzf >/dev/null 2>&1; then
+    echo "[OK] fzf: $(fzf --version 2>/dev/null | awk '{print $1}') (interactive picker available)"
+  else
+    echo "[i] fzf: not found (install for interactive picker: gtr cd)"
+  fi
+
   echo ""
   if [ "$issues" -eq 0 ]; then
     echo "Everything looks good!"

lib/commands/help.sh

@@ -367,7 +367,17 @@ Setup:
 After setup:
   gtr cd my-feature                             # cd to worktree
   gtr cd 1                                      # cd to main repo
+  gtr cd                                        # interactive picker (requires fzf)
   gtr <command>                                 # same as git gtr <command>
+
+Command palette (gtr cd with no arguments, requires fzf):
+  enter       cd into selected worktree
+  ctrl-e      open in editor
+  ctrl-a      start AI tool
+  ctrl-d      delete worktree (with confirmation)
+  ctrl-y      copy files to worktree
+  ctrl-r      refresh list
+  esc         cancel
 EOF
 }
 
@@ -549,6 +559,7 @@ SETUP & MAINTENANCE:
          Generate shell integration for cd support (bash, zsh, fish)
          --as <name>: custom function name (default: gtr)
          Usage: eval "$(git gtr init bash)"
+         With fzf: 'gtr cd' opens a command palette (preview, editor, AI, delete)
 
   version
          Show version
@@ -572,6 +583,7 @@ WORKFLOW EXAMPLES:
   git gtr run feature/user-auth npm run dev   # Start dev server
 
   # Navigate to worktree directory
+  gtr cd                                    # Interactive picker (requires fzf)
   gtr cd feature/user-auth                  # With shell integration (git gtr init)
   cd "$(git gtr go feature/user-auth)"      # Without shell integration
 

lib/commands/init.sh

@@ -82,7 +82,33 @@ __FUNC__() {
   if [ "$#" -gt 0 ] && [ "$1" = "cd" ]; then
     shift
     local dir
-    dir="$(command git gtr go "$@")" && cd "$dir" && {
+    if [ "$#" -eq 0 ] && command -v fzf >/dev/null 2>&1; then
+      local _gtr_selection
+      _gtr_selection="$(command git gtr list --porcelain | fzf \
+        --delimiter=$'\t' \
+        --with-nth=2 \
+        --ansi \
+        --layout=reverse \
+        --border \
+        --prompt='Worktree> ' \
+        --header='enter:cd │ ctrl-e:editor │ ctrl-a:ai │ ctrl-d:delete │ ctrl-y:copy │ ctrl-r:refresh' \
+        --preview='git -C {1} log --oneline --graph --color=always -15 2>/dev/null; echo "---"; git -C {1} status --short 2>/dev/null' \
+        --preview-window=right:50% \
+        --bind='ctrl-e:execute(git gtr editor {2})' \
+        --bind='ctrl-a:execute(git gtr ai {2})' \
+        --bind='ctrl-d:execute(git gtr rm {2})+reload(git gtr list --porcelain)' \
+        --bind='ctrl-y:execute(git gtr copy {2})' \
+        --bind='ctrl-r:reload(git gtr list --porcelain)')" || return 0
+      [ -z "$_gtr_selection" ] && return 0
+      dir="$(printf '%s' "$_gtr_selection" | cut -f1)"
+    elif [ "$#" -eq 0 ]; then
+      echo "Usage: __FUNC__ cd <branch>" >&2
+      echo "Tip: Install fzf for an interactive picker (https://github.com/junegunn/fzf)" >&2
+      return 1
+    else
+      dir="$(command git gtr go "$@")" || return $?
+    fi
+    cd "$dir" && {
       local _gtr_hooks _gtr_hook _gtr_seen _gtr_config_file
       _gtr_hooks=""
       _gtr_seen=""
@@ -152,10 +178,37 @@ _init_zsh() {
 #   eval "$(git gtr init zsh)"
 
 __FUNC__() {
+  emulate -L zsh
   if [ "$#" -gt 0 ] && [ "$1" = "cd" ]; then
     shift
     local dir
-    dir="$(command git gtr go "$@")" && cd "$dir" && {
+    if [ "$#" -eq 0 ] && command -v fzf >/dev/null 2>&1; then
+      local _gtr_selection
+      _gtr_selection="$(command git gtr list --porcelain | fzf \
+        --delimiter=$'\t' \
+        --with-nth=2 \
+        --ansi \
+        --layout=reverse \
+        --border \
+        --prompt='Worktree> ' \
+        --header='enter:cd │ ctrl-e:editor │ ctrl-a:ai │ ctrl-d:delete │ ctrl-y:copy │ ctrl-r:refresh' \
+        --preview='git -C {1} log --oneline --graph --color=always -15 2>/dev/null; echo "---"; git -C {1} status --short 2>/dev/null' \
+        --preview-window=right:50% \
+        --bind='ctrl-e:execute(git gtr editor {2})' \
+        --bind='ctrl-a:execute(git gtr ai {2})' \
+        --bind='ctrl-d:execute(git gtr rm {2})+reload(git gtr list --porcelain)' \
+        --bind='ctrl-y:execute(git gtr copy {2})' \
+        --bind='ctrl-r:reload(git gtr list --porcelain)')" || return 0
+      [ -z "$_gtr_selection" ] && return 0
+      dir="$(printf '%s' "$_gtr_selection" | cut -f1)"
+    elif [ "$#" -eq 0 ]; then
+      echo "Usage: __FUNC__ cd <branch>" >&2
+      echo "Tip: Install fzf for an interactive picker (https://github.com/junegunn/fzf)" >&2
+      return 1
+    else
+      dir="$(command git gtr go "$@")" || return $?
+    fi
+    cd "$dir" && {
       local _gtr_hooks _gtr_hook _gtr_seen _gtr_config_file
       _gtr_hooks=""
       _gtr_seen=""
@@ -232,8 +285,35 @@ _init_fish() {
 
 function __FUNC__
   if test (count $argv) -gt 0; and test "$argv[1]" = "cd"
-    set -l dir (command git gtr go $argv[2..])
-    and cd $dir
+    set -l dir
+    if test (count $argv) -eq 1; and type -q fzf
+      set -l _gtr_selection (command git gtr list --porcelain | fzf \
+        --delimiter=\t \
+        --with-nth=2 \
+        --ansi \
+        --layout=reverse \
+        --border \
+        --prompt='Worktree> ' \
+        --header='enter:cd │ ctrl-e:editor │ ctrl-a:ai │ ctrl-d:delete │ ctrl-y:copy │ ctrl-r:refresh' \
+        --preview='git -C {1} log --oneline --graph --color=always -15 2>/dev/null; echo "---"; git -C {1} status --short 2>/dev/null' \
+        --preview-window=right:50% \
+        --bind='ctrl-e:execute(git gtr editor {2})' \
+        --bind='ctrl-a:execute(git gtr ai {2})' \
+        --bind='ctrl-d:execute(git gtr rm {2})+reload(git gtr list --porcelain)' \
+        --bind='ctrl-y:execute(git gtr copy {2})' \
+        --bind='ctrl-r:reload(git gtr list --porcelain)')
+      or return 0
+      test -z "$_gtr_selection"; and return 0
+      set dir (string split \t -- "$_gtr_selection")[1]
+    else if test (count $argv) -eq 1
+      echo "Usage: __FUNC__ cd <branch>" >&2
+      echo "Tip: Install fzf for an interactive picker (https://github.com/junegunn/fzf)" >&2
+      return 1
+    else
+      set dir (command git gtr go $argv[2..])
+      or return $status
+    end
+    cd $dir
     and begin
       set -l _gtr_hooks
       set -l _gtr_seen

tests/init.bats

@@ -158,6 +158,53 @@ setup() {
   [ "$status" -eq 1 ]
 }
 
+# ── fzf interactive picker ───────────────────────────────────────────────────
+
+@test "bash output includes fzf picker for cd with no args" {
+  run cmd_init bash
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"command -v fzf"* ]]
+  [[ "$output" == *"--prompt='Worktree> '"* ]]
+  [[ "$output" == *"--with-nth=2"* ]]
+  [[ "$output" == *"ctrl-e:execute"* ]]
+}
+
+@test "zsh output includes fzf picker for cd with no args" {
+  run cmd_init zsh
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"command -v fzf"* ]]
+  [[ "$output" == *"--prompt='Worktree> '"* ]]
+  [[ "$output" == *"--with-nth=2"* ]]
+  [[ "$output" == *"ctrl-e:execute"* ]]
+}
+
+@test "fish output includes fzf picker for cd with no args" {
+  run cmd_init fish
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"type -q fzf"* ]]
+  [[ "$output" == *"--prompt='Worktree> '"* ]]
+  [[ "$output" == *"--with-nth=2"* ]]
+  [[ "$output" == *"ctrl-e:execute"* ]]
+}
+
+@test "bash output shows fzf install hint when no args and no fzf" {
+  run cmd_init bash
+  [ "$status" -eq 0 ]
+  [[ "$output" == *'Install fzf for an interactive picker'* ]]
+}
+
+@test "fish output shows fzf install hint when no args and no fzf" {
+  run cmd_init fish
+  [ "$status" -eq 0 ]
+  [[ "$output" == *'Install fzf for an interactive picker'* ]]
+}
+
+@test "--as replaces function name in fzf fallback message" {
+  run cmd_init bash --as gwtr
+  [ "$status" -eq 0 ]
+  [[ "$output" == *'Usage: gwtr cd <branch>'* ]]
+}
+
 # ── git gtr passthrough preserved ────────────────────────────────────────────
 
 @test "bash output passes non-cd commands to git gtr" {