Add tool form E2E test harness driven by XML test definitions

Reuses existing tool <tests> blocks to drive execution through the
browser tool form, then verifies outputs with verify() infrastructure.

Harness infrastructure (navigates_galaxy.py):
- run_tool_test() orchestrates: fetch test def via galaxy_interactor,
  stage data via stage_inputs(), fill form, execute, verify
- Data staging uses stage_inputs() from populators (not bespoke upload),
  supporting files, collections, binary data, and ftype passthrough
- Collection staging converts TestCollectionDef dicts to CWL-like job
  entries; supports paired, list, and list:paired (nested) types
- Job-based output tracking: snapshots pre-execution jobs, finds new job
  after form submit, fetches outputs by dataset ID via job API
- Output collection verification: checks collection_type, element count,
  and verifies each element's content; supports nested sub-collections
- Two-pass input filling: shallow params first (conditionals), then
  deferred params, data params, collection params last
- Type detection via smart components: drilldown, checkbox_select,
  boolean, color, select, text
- Multi-data support: detect FormSelection wrapper, clear auto-selected
  tags before setting desired value
- Smart component selectors in navigation.yml for param type detection
  and interaction (parameter_checkbox_input, parameter_color_input,
  parameter_text_input, parameter_drilldown_option, etc.)

Test data:
- Add test cases to gx_data.xml and gx_repeat_boolean.xml
- Fix output name in gx_repeat_data.xml (out_file1 -> output)

Test suite (test_tool_form_harness.py) — 30 tests:
- Scalar params: int, float, text, select, boolean, color
- Composite params: conditional (select + boolean), section, repeat,
  drilldown, multi-select checkboxes, data column, multi-data
- Data: single file, optional absent, multi-output, multi-repeats
- Collections: paired, list, list:paired input; paired and list:paired
  output verification; mixed collection+data; optional absent collection
- Integration: simple_constructs, implicit_default_conds

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jmchilton

client/src/utils/navigation/navigation.yml

@@ -669,9 +669,17 @@ tool_form:
     parameter_data_label: 'div.ui-form-element[id="form-element-${parameter}"] [data-description="form data label"]'
     parameter_data_select: 'div.ui-form-element[id="form-element-${parameter}"] .multiselect'
 
+    parameter_checkbox_input: 'div.ui-form-element[id="form-element-${parameter}"] input[type="checkbox"]'
+    parameter_color_input: 'div.ui-form-element[id="form-element-${parameter}"] input[type="color"]'
+    parameter_text_input: 'div.ui-form-element[id="form-element-${parameter}"] input'
+    parameter_form_selection: 'div.ui-form-element[id="form-element-${parameter}"] .form-selection'
+    parameter_multiselect_tag_close: 'div.ui-form-element[id="form-element-${parameter}"] i.multiselect__tag-icon'
+    parameter_drilldown_option: 'div.ui-form-element[id="form-element-${parameter}"] #drilldown-option-${value}'
+
     repeat_insert: '[data-description="repeat insert"]'
     repeat_move_up: '#${parameter}_up'
     repeat_move_down: '#${parameter}_down'
+    section_header: '.ui-portlet-section .portlet-header'
     reference: '.formatted-reference'
     about: '.tool-footer'
     storage_options: '.tool-storage'

lib/galaxy/selenium/navigates_galaxy.py

@@ -2143,14 +2143,14 @@ def tool_parameter_edit_rules(self):
         edit_button_element = rules_div_element.find_element(By.CSS_SELECTOR, ".form-rules-edit button")
         edit_button_element.click()
 
-    def tool_set_value(self, expanded_parameter_id, value, expected_type=None):
+    def tool_set_value(self, expanded_parameter_id, value, expected_type=None, multiple=False):
         div_element = self.tool_parameter_div(expanded_parameter_id)
         assert div_element
         if expected_type in ["select", "data", "data_collection"]:
             select_field = self.components.tool_form.parameter_data_select(
                 parameter=expanded_parameter_id
             ).wait_for_visible()
-            self.select_set_value(select_field, value)
+            self.select_set_value(select_field, value, multiple=multiple)
         else:
             input_element = div_element.find_element(By.CSS_SELECTOR, "input")
             # Clear default value