## Summary
This PR fixes 3 bugs in agent components:
### Bug 1: `DataOperations._invoke()` dispatches `"literal_eval"` to
wrong handler
**File:** `agent/component/data_operations.py`, line 76
The `_invoke()` method compares `self._param.operations` against
`"recursive_eval"` (line 76), but the valid value defined in
`DataOperationsParam.__init__()` (line 29) and validated in `check()`
(line 43) is `"literal_eval"`. This means selecting the `literal_eval`
operation from the frontend would never match, and the method
`_literal_eval()` would never be called.
**Fix:** Change `"recursive_eval"` to `"literal_eval"` in the dispatch
condition.
### Bug 2: `VariableAssigner._clear()` — `bool` branch unreachable
**File:** `agent/component/variable_assigner.py`, lines 95–100
In Python, `bool` is a subclass of `int` (`True` is `isinstance(True,
int) == True`). The `isinstance(variable, int)` check on line 95 catches
boolean values before the `isinstance(variable, bool)` check on line 99,
making the bool branch unreachable. A boolean variable would be cleared
to `0` instead of `False`.
**Fix:** Move the `isinstance(variable, bool)` check before
`isinstance(variable, int)`.
### Bug 3: `LoopItem.evaluate_condition()` — `bool` branch unreachable
**File:** `agent/component/loopitem.py`, lines 67–93
Same issue as Bug 2: `isinstance(var, (int, float))` on line 67 catches
boolean values before `isinstance(var, bool)` on line 85. Boolean
variables would be evaluated with numeric operators (`=`, `≠`, `>`,
etc.) instead of boolean operators (`is`, `is not`).
**Fix:** Move the `isinstance(var, bool)` check before `isinstance(var,
(int, float))`.
## Test plan
- [ ] Verify `DataOperations` with `literal_eval` operation correctly
invokes `_literal_eval()`
- [ ] Verify `VariableAssigner._clear()` returns `False` for boolean
variables (not `0`)
- [ ] Verify `LoopItem.evaluate_condition()` uses boolean operators for
`True`/`False` values
🤖 Generated with [Claude Code](https://claude.com/claude-code)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Fixed operation routing logic to correctly dispatch the "literal_eval"
operation to its handler.
* **Refactor**
* Reorganized conditional branch ordering in agent components to improve
code structure and maintainability without affecting functional
behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
### What problem does this PR solve?
issue:
#10427
change:
new component Loop
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
