fix: cleanup protocol listeners

[mschile]

• Closes n/a

Additional details

Saw the following listeners leak:

[cy:open:dev:9026]: (node:9089) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 Network.requestServedFromCache listeners added to [EventEmitter]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit
[cy:open:dev:9026]: (node:9089) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 Network.requestWillBeSent listeners added to [EventEmitter]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit
[cy:open:dev:9026]: (node:9089) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 Network.responseReceived listeners added to [EventEmitter]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit
[cy:open:dev:9026]: (node:9089) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 Network.loadingFailed listeners added to [EventEmitter]. MaxListeners is 10. Use emitter.setMaxListeners() to increase limit

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Note

Medium Risk
Touches protocol lifecycle and CDP event wiring; mistakes could break Test Replay capture or leave listeners attached, but the changes are localized and covered by new unit tests.

Overview
Fixes capture protocol listener/resource leaks by introducing a cleanup() lifecycle method and ensuring it runs when the protocol is re-initialized (setupProtocol), when a spec fails early (beforeSpec error), and when the run closes (close).

Updates CDP client wrapping to track wrapped listeners per event+listener and implement off() so protocol code can reliably unregister listeners; unit tests and the test protocol fixture are updated accordingly, and the change is noted in the CLI changelog.

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Steps to test

n/a

How has the user experience changed?

n/a

PR Tasks

• Have tests been added/updated?
• [n/a] Has a PR for user-facing changes been opened in cypress-documentation?
• [n/a] Have API changes been updated in the type definitions?

[cypress]

cypress    Run #69072

Run Properties:   Passed #69072  •  b689d38637: fix lint

Project	cypress
Branch Review	mschile/protocol/cleanup
Run status	Passed #69072
Run duration	19m 19s
Commit	b689d38637: fix lint
Committer	Matthew Schile
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	10
Pending	1112
Skipped	4
Passing	27178
View all changes introduced in this branch ↗︎

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Warning

Partial Report: The results for the Application Quality reports may be incomplete.

UI Coverage  61.04%
Untested elements	28
Tested elements	47

Accessibility  99.02%
Failed rules	0 critical   3 serious   1 moderate   0 minor
Failed elements	18

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[cypress-bot]

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