Decoded HandleCascadeUserInteractionRequest protobuf schema from AG's
extension.js (message #162, base64 FileDescriptor 78KB).
Working payload (variant PROTO-0):
cascadeId + interaction.{trajectoryId, stepIndex, runCommand.confirm}
Changes:
- extension.ts: Added Strategy 0-PROTO with decoded proto RPC call
- extension.ts: Fixed processResponseFile to call tryApprovalStrategies()
instead of direct clickTrigger (was bypassing all strategies)
- extension.ts: Fixed false positive Run detection (sessionStalled reset
when step_probe confirms no WAITING)
- extension.ts: Moved lastPendingStepIndex to module scope
- extension.ts: Added activeTrajectoryId tracking from session init
- bot.py: Added MERGE detection + Discord message edit for command updates
- bot.py: Added _sent_commands tracking for merge detection
Proto RE methodology:
1. Found schema exports in AG extension.js
2. Located fileDesc() with base64 protobuf descriptor
3. Decoded 58KB raw proto, found message names
4. Extracted CascadeRunCommandInteraction.confirm field
5. Tested camelCase JSON via ConnectRPC = SUCCESS
- CMD-DISCOVERY: enumerate all antigravity.* commands at activation (72) and during WAITING state (119)
- APPROVAL-CMD-CHECK: re-check commands inside tryApprovalStrategies for dynamic registration
- Confirmed: ALL 7 SDK approval commands NOT REGISTERED in current AG build
- Confirmed: sendChatActionMessage, executeCascadeAction also NOT REGISTERED
- Replaced failed keyboard simulation (Strategy 2) with renderer DOM click approach:
- Added clickTrigger variable + GET /trigger-click HTTP endpoint
- Renderer polls /trigger-click every 1s, clicks Run/Accept button via DOM
- Updated known-issues.md with comprehensive findings
- Added devlog entry 20260309-002
- Fix: processResponseFile no longer deletes response files for DOM observer
approvals, allowing renderer pollResponse to find and serve them via HTTP
- Fix: Run button regex ^Run$ → ^Run to match 'Run Alt+⏎' button text
- Fix: BTN-DUMP diagnostic added to generateApprovalObserverScript (source)
- Doc: 2 new known issues (race condition, renderer script 3-location confusion)
- Doc: devlog entry #19
