[t91a60]

Extension state events were grouped by type, so a LOADED, UNLOADED, LOADED sequence replayed as LOADED, LOADED, UNLOADED. Reading and clearing the queue in separate CDP calls could also discard events arriving between those calls.

Use a FIFO queue and drain it in one evaluation. Await listeners before dispatching the next event so an asynchronous install cannot finish after a later removal. Catch rejected listeners without stopping the remaining callbacks or events.

Verification:

• Six Bun regression tests pass. Before the fix, tests reproduced reordered events, a lost event, and removal overtaking an asynchronous installation.
• bun run build, bun run lint, bun run check, test TypeScript checking, formatting checks, and git diff --check pass in an LF checkout. The build retains the existing circular-dependency warning.

Tests execute the injected functions in a VM and simulate the JSON/CDP boundary. Native Chrome event delivery and Steam/Millennium integration have not been tested. This does not address initial inventory hydration or general plugin teardown.