* refactor: split workflow into pkg, add WorkflowTracker & wait_retry
* feat: add async LoopBase with parallel workers and step semaphores
* fix: replace pickle with dill and run blocking tasks via joblib wrapper
* feat: add log format settings, dynamic parallelism & pickle-based snapshot
* fix: default step semaphore to 1 and avoid subprocess when single worker
* merge bowen's changes
* merge tim's changes
* refactor: extract component task mapping, add conditional logger setup
* lint
* refactor: add type hints and safer remain_time metric logging in workflow
* lint
* fix: allow BadRequestError to be pickled via custom copyreg reducer
* fix: stop loop when LoopTerminationError is raised in LoopBase
* lint
* refactor: make log tag context-local using ContextVar for thread safety
* feat: add subproc_step flag and helper to decide subprocess execution
* fix: use ./cache path and normalize relative volume bind paths
* fix: reset loop_idx to 0 on loop restart/resume to ensure correct flow
* fix: avoid chmod on cache and input dirs in Env timeout wrapper
* fix: skip chmod on 'cache' and 'input' dirs using find -prune
* fix: restrict chmod to immediate mount dirs excluding cache/input
* fix: chmod cache and input dirs alongside their contents after entry run
* fix: guard chmod with directory checks for cache and input
* fix: prefix mount_path in chmod command for cache/input dirs
* fix: drop quotes from find exclude patterns to ensure chmod executes
* fix: skip chmod on cache/input directories to avoid warning spam
* feat: support string volume mappings and poll subprocess stdout/stderr
* support remove symbolic link
* test: use dynamic home path and code volume in LocalEnv local_simple
* fix: skip trace and progress update when loop step is withdrawn
* refactor: add clean_workspace util and non-destructive workspace backup
* fix: preserve symlinks when backing up workspace with copytree
* fix: prevent AttributeError when _pbar not yet initialized in LoopBase
* perf: replace shutil.copytree with rsync for faster workspace backup
* fix: cast log directory Path to str in tar command of data science loop
* fix: use portable 'cp -r -P' instead of rsync for workspace backup
* fix: add retry and logging to workspace backup for robustness
* refactor: extract backup_folder helper and reuse in DataScienceRDLoop
* fix: propagate backup errors & default _pbar getattr to avoid error
* fix the division by zero bug
* refactor: execute RD loops via asyncio.run and add necessary imports
* lint
* lint
* lint
---------
Co-authored-by: Xu <v-xuminrui@microsoft.com>
Xu Yang