Intent of runSubagentTool.test|title=RunSubagentTool model fallback behavior uses the Copilot fallback model when the main model is also Copilot|occurrence=1

All 7 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 7 tests
- workbench/ 7 tests
  - contrib/ 7 tests
    
    chat/ 7 tests
    
    test/ 7 tests
    
    common/ 7 tests
    
    tools/ 7 tests
    
    builtinTools/ 7 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior honors a user-authored agent's explicit Copilot model even when main model is BYOK|occurrence=1 Inherited runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has equal multiplier|occurrence=1, runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has lower multiplier|occurrence=1, +3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior skips Copilot fallback but uses a non-Copilot fallback when main model is BYOK|occurrence=1 Inherited runSubagentTool.test|title=RunSubagentTool model fallback behavior skips Copilot fallback but uses a non-Copilot fallback when main model is BYOK|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has equal multiplier|occurrence=1 Inherited runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has equal multiplier|occurrence=1, runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has lower multiplier|occurrence=1, +3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has lower multiplier|occurrence=1 Inherited runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has equal multiplier|occurrence=1, runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has lower multiplier|occurrence=1, +3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when main model has no multiplier|occurrence=1 Inherited runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has equal multiplier|occurrence=1, runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has lower multiplier|occurrence=1, +3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when subagent model has no multiplier|occurrence=1 Inherited runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has equal multiplier|occurrence=1, runSubagentTool.test|title=RunSubagentTool model fallback behavior uses subagent model when it has lower multiplier|occurrence=1, +3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/tools/builtinTools/runSubagentTool.test|title=RunSubagentTool model fallback behavior uses the Copilot fallback model when the main model is also Copilot|occurrence=1 Introduced here