Merge pull request 'fix(kugetsu): call fix_session_permissions before forking' (#109) from fix/prefork-permissions into main

- Call fix_session_permissions in cmd_start before forking to ensure
  base session has correct permissions for external_directory access
- Add debug logging to show forked session's directory and permissions
  after creation to help diagnose permission inheritance issues

skills/kugetsu/scripts/kugetsu

@@ -1244,6 +1244,9 @@ cmd_start() {
     fi
     
     local fork_log="$SESSIONS_DIR/$session_file.fork.log"
+    local opencode_db="${OPENCODE_DB:-$HOME/.local/share/opencode/opencode.db}"
+    
+    fix_session_permissions
     
     if [ "$DEBUG_MODE" = true ]; then
         (cd "$worktree_path" && opencode run "$message" --fork --session "$base_session_id" 2>&1) | tee "$fork_log" &
@@ -1256,18 +1259,11 @@ cmd_start() {
     local max_attempts=10
     local attempt=1
     local new_session_id=""
+    local fork_log_output=""
     
     while [ $attempt -le $max_attempts ]; do
         sleep 1
         
-        if ! kill -0 $fork_pid 2>/dev/null; then
-            if [ -s "$fork_log" ]; then
-                echo "Fork command exited. Log output:" >&2
-                tail -20 "$fork_log" >&2
-            fi
-            break
-        fi
-        
         while IFS= read -r sess; do
             [ "$sess" = "$base_session_id" ] && continue
             [ "$sess" = "$pm_agent_session_id" ] && continue
@@ -1290,19 +1286,53 @@ cmd_start() {
             break
         fi
         
+        if ! kill -0 $fork_pid 2>/dev/null; then
+            fork_log_output=$(tail -20 "$fork_log" 2>/dev/null || echo "(log empty or unavailable)")
+            break
+        fi
+        
         attempt=$((attempt + 1))
     done
 
     if [ -z "$new_session_id" ]; then
+        if [ -f "$opencode_db" ]; then
+            local db_sessions=$(python3 -c "
+import sqlite3
+conn = sqlite3.connect('$opencode_db')
+cursor = conn.cursor()
+cursor.execute(\"SELECT id FROM session WHERE parent_id IS NOT NULL ORDER BY time_created DESC LIMIT 5\")
+for row in cursor.fetchall():
+    print(row[0])
+" 2>/dev/null || echo "")
+            if [ -n "$db_sessions" ]; then
+                echo "Recent forked sessions in DB:" >&2
+                echo "$db_sessions" >&2
+            fi
+        fi
+        
         echo "Error: Could not find newly created session after ${max_attempts}s" >&2
-        if [ -f "$fork_log" ] && [ -s "$fork_log" ]; then
-            echo "Fork log:" >&2
-            tail -30 "$fork_log" >&2
+        if [ -n "$fork_log_output" ]; then
+            echo "Fork log output:" >&2
+            echo "$fork_log_output" >&2
         fi
         remove_worktree_for_issue "$issue_ref"
         exit 1
     fi
 
+    if [ "$DEBUG_MODE" = true ]; then
+        echo "[DEBUG] Forked session permissions check:"
+        python3 -c "
+import sqlite3
+conn = sqlite3.connect('$opencode_db')
+cursor = conn.cursor()
+cursor.execute(\"SELECT id, directory, permission FROM session WHERE id = '$new_session_id'\")
+for row in cursor.fetchall():
+    print('  ID:', row[0])
+    print('  Directory:', row[1])
+    print('  Permission:', row[2])
+" 2>/dev/null || echo "  (failed to query DB)"
+    fi
+
     printf '{"type": "forked", "issue_ref": "%s", "opencode_session_id": "%s", "worktree_path": "%s", "created_at": "%s", "state": "idle"}\n' \
         "$issue_ref" "$new_session_id" "$worktree_path" "$(date -Iseconds)" > "$SESSIONS_DIR/$session_file"