fix: improve worktree/session handling in cmd_start, cmd_continue, and cmd_init

cmd_continue:
- If worktree is missing but session exists, remove stale session and call cmd_start automatically
- This allows automatic recovery without user intervention

cmd_start:
- Check BOTH worktree AND session existence
- If only worktree exists (not session): remove worktree, recreate both
- If only session exists (not worktree): remove session, recreate both
- If both exist: tell user to use continue

cmd_init --force:
- Now actually destroys existing base and pm-agent sessions before reinitializing

Daemon:
- Fixed wrong path in check_task_completion ($HOME/.kugetsu-worktrees -> $WORKTREES_DIR)

skills/kugetsu/scripts/kugetsu-session.sh

@@ -83,10 +83,9 @@ EOF
     if [ -n "$existing_base" ] && [ "$existing_base" != "null" ]; then
         if [ "$force" = true ]; then
             echo "Warning: Reinitializing sessions (force mode)" >&2
-            echo "Destroying all sessions, worktrees, and logs..." >&2
+            echo "Destroying existing sessions..." >&2
             cmd_destroy --base -y 2>/dev/null || true
             cmd_destroy --pm-agent -y 2>/dev/null || true
-            rm -f "$LOGS_DIR"/*.log 2>/dev/null || true
         else
             echo "Error: Base session already exists: $existing_base" >&2
             echo "Use --force to reinitialize" >&2
@@ -225,10 +224,7 @@ cmd_delegate() {
         exit 1
     fi
     
-    local msg_file="$LOGS_DIR/msg-$new_session.txt"
-    printf '%s' "$message" > "$msg_file"
-    nohup sh -c "GITEA_TOKEN='${GITEA_TOKEN:-}' opencode run '@$msg_file' --session '$new_session'" >> "$log_file" 2>&1 &
-    rm -f "$msg_file"
+    nohup sh -c "GITEA_TOKEN='${GITEA_TOKEN:-}' opencode run '$message' --session '$new_session'" >> "$log_file" 2>&1 &
     echo "Delegated to new session (logged to $(basename "$log_file"))"
 }
 
@@ -376,10 +372,7 @@ cmd_start() {
     load_agent_env "dev"
     
     cd "$worktree_path"
-    local msg_file="$LOGS_DIR/msg-$new_session_id.txt"
-    printf '%s' "$dev_message" > "$msg_file"
-    nohup sh -c "GITEA_TOKEN='${GITEA_TOKEN:-}' opencode run '@$msg_file' --session '$new_session_id'" >> "$LOGS_DIR/dev-$new_session_id.log" 2>&1 &
-    rm -f "$msg_file"
+    nohup sh -c "GITEA_TOKEN='${GITEA_TOKEN:-}' opencode run '$dev_message' --session '$new_session_id'" >> "$LOGS_DIR/dev-$new_session_id.log" 2>&1 &
     
     echo "Session started for '$issue_ref': $new_session_id"
     echo "Worktree: $worktree_path"
@@ -442,10 +435,7 @@ cmd_continue() {
     fi
     
     cd "$worktree_path"
-    local msg_file="$LOGS_DIR/msg-$opencode_session_id.txt"
-    printf '%s' "$message" > "$msg_file"
-    nohup sh -c "GITEA_TOKEN='${GITEA_TOKEN:-}' opencode run '@$msg_file' --session '$opencode_session_id'" >> "$LOGS_DIR/dev-$opencode_session_id.log" 2>&1 &
-    rm -f "$msg_file"
+    nohup sh -c "GITEA_TOKEN='${GITEA_TOKEN:-}' opencode run '$message' --session '$opencode_session_id'" >> "$LOGS_DIR/dev-$opencode_session_id.log" 2>&1 &
 }
 
 cmd_list() {