Fix overlay toggle regression TASK-7

docs/subagents/agents/codex-overlay-toggle-regression-20260222T073450Z-q7m4.md

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+# Agent: `codex-overlay-toggle-regression-20260222T073450Z-q7m4`
+
+- alias: `codex-overlay-toggle-regression`
+- mission: `Fix post-rebase overlay toggle regression causing transparent non-interactable windows and broken keybinds (TASK-107).`
+- status: `testing`
+- branch: `main`
+- started_at: `2026-02-22T07:34:50Z`
+- heartbeat_minutes: `5`
+
+## Current Work (newest first)
+- [2026-02-22T07:45:58Z] progress: Added `src/core/services/overlay-window-config.test.ts` red test for explicit `webPreferences.sandbox=false`; patched `src/core/services/overlay-window.ts` with `sandbox: false`; verified focused tests + full build pass.
+- [2026-02-22T07:44:40Z] test: Added red regression in `src/renderer/error-recovery.test.ts` proving `resolvePlatformInfo` incorrectly preferred preload layer over query layer; patched `src/renderer/utils/platform.ts` to prioritize `?layer=` and reran tests/build green.
+- [2026-02-22T07:34:50Z] intent: Initialize session record, associate work with TASK-107, inspect overlay runtime + renderer regressions after rebase.
+
+## Files Touched
+- `backlog/tasks/task-107 - Fix-post-rebase-overlay-toggle-regression.md`
+- `docs/subagents/agents/codex-overlay-toggle-regression-20260222T073450Z-q7m4.md`
+- `docs/subagents/INDEX.md`
+- `docs/subagents/collaboration.md`
+- `src/renderer/error-recovery.test.ts`
+- `src/renderer/utils/platform.ts`
+- `src/core/services/overlay-window.ts`
+- `src/core/services/overlay-window-config.test.ts`
+
+## Assumptions
+- Regression likely introduced by recent rebase merge in main/runtime overlay wiring.
+- Existing overlay regression tests can be extended for red-green fix.
+
+## Open Questions / Blockers
+- Exact break location (window options vs renderer preload/load path vs toggle handler state).
+
+## Next Step
+- Hand off fix summary + validation commands to user for runtime confirmation on host machine.