fix: remove doubled .kugetsu-worktrees path segment in issue_ref_to_worktree_path

Fixes #179 - cmd_start fails due to incorrect worktree path being created
with .kugetsu-worktrees/.kugetsu-worktrees/ instead of just the worktree name.

skills/kugetsu/scripts/kugetsu

@@ -854,6 +854,11 @@ EOF
 }
 
 parse_issue_ref_from_message() {
+    # DEPRECATED: This function is not called anywhere.
+    # The active implementation is extract_issue_ref_from_message()
+    # in kugetsu-session.sh which is used by cmd_delegate.
+    # This function is kept for backwards compatibility and will
+    # be removed in a future release.
     local message="$1"
     
     local gitserver=""

skills/kugetsu/scripts/kugetsu-session.sh

@@ -156,13 +156,11 @@ extract_issue_ref_from_message() {
         return
     fi
     
-    if [[ "$message" =~ (https?://[a-zA-Z0-9.-]+/[a-zA-Z0-9._-]+/[a-zA-Z0-9._-]+/(issues|pull)/[0-9]+) ]]; then
-        local url="${BASH_REMATCH[1]}"
-        local path=$(echo "$url" | sed 's|https\?://||' | cut -d'/' -f2-)
-        local instance=$(echo "$path" | cut -d'/' -f1)
-        local owner=$(echo "$path" | cut -d'/' -f2)
-        local repo=$(echo "$path" | cut -d'/' -f3)
-        local num=$(echo "$path" | grep -oE '[0-9]+$')
+    if [[ "$message" =~ (https?://)?([a-zA-Z0-9.-]+)/([a-zA-Z0-9._-]+)/([a-zA-Z0-9._-]+)/(issues|pull)/([0-9]+) ]]; then
+        local instance="${BASH_REMATCH[2]}"
+        local owner="${BASH_REMATCH[3]}"
+        local repo="${BASH_REMATCH[4]}"
+        local num="${BASH_REMATCH[6]}"
         echo "${instance}/${owner}/${repo}#${num}"
         return
     fi

skills/kugetsu/scripts/kugetsu-worktree.sh

@@ -10,7 +10,7 @@ issue_ref_to_worktree_path() {
     local issue_ref="$1"
     local parent_dir="${2:-$WORKTREES_DIR}"
     local worktree_name=$(issue_ref_to_worktree_name "$issue_ref")
-    echo "$parent_dir/.kugetsu-worktrees/$worktree_name"
+    echo "$parent_dir/$worktree_name"
 }
 
 issue_ref_to_branch_name() {