Issue for this PR

Closes #154

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Session.invalidate() removed the active socket before its close handler ran, so the handler treated the socket as superseded and left in-flight CDP calls pending.

Rejecting and clearing the pending calls during invalidation makes them settle with the same retirement error.

How did you verify your code works?

• Added a regression test with an unanswered CDP call.
• Reproduced with a local loopback WebSocket: before the fix it remained pending; after the fix it rejected immediately.
• git diff --check passes.
• The Bun test suite was not run locally because Bun is unavailable; CI will run it.

Screenshots / recordings

Not applicable.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

Summary by cubic

Rejects in-flight CDP calls when a session is invalidated to prevent hangs. Previously, Session.invalidate() removed the socket before its close handler ran, leaving pending calls unresolved; now it rejects and clears all pending calls with the same retirement error.

• Impact: In-flight CDP calls will now reject immediately on invalidation. If you relied on them remaining pending, handle the retirement error instead.

Written for commit 6fbf5db. Summary will update on new commits.