fix: resolve lint:packages warnings blocking CI (--max-warnings 0)

[davedbase]

• memo: two let bindings that are never reassigned (prefer-const)
• websocket: ws?.removeEventListener flagged as an unnecessary optional chain by @typescript-eslint/no-unnecessary-condition — this is a false positive, ws is genuinely undefined on the first getWS() call (declared without an initializer), TS's declared type just doesn't reflect that. Suppressed with the same eslint-disable pattern already used one line below for the identical false positive, rather than removing the ?. (which would throw on first connect).

No behavior change; verified via full memo/websocket test suites.

Summary by CodeRabbit

• Refactor
  • Improved internal code clarity and linting documentation without changing observable behavior.

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Latest commit: 976fe62

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 6808b0c6-1069-4de2-ba93-2304ceafb5d5

📥 Commits

Reviewing files that changed from the base of the PR and between 85e6167 and 976fe62.

📒 Files selected for processing (2)

• packages/memo/src/index.ts
• packages/websocket/src/index.ts

Included review availability: Your plan includes up to 4 reviews per rolling hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The changes replace two mutable memo bindings with immutable bindings and add an ESLint suppression comment for the initial undefined WebSocket reference. Runtime behavior remains unchanged.

Changes

Memo declaration cleanup

Layer / File(s)	Summary
Make memo locals immutable packages/memo/src/index.ts	The memo calculation result and captured memo reference now use const. Memo state updates and cleanup behavior remain unchanged.

WebSocket lint clarification

Layer / File(s)	Summary
Explain initial WebSocket state packages/websocket/src/index.ts	The getWS code documents the intentional potentially undefined ws reference during the first call.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 976fe

This localized lint-only change is merge-ready after normal checks and review; no actionable merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: fixing lint warnings that block CI with --max-warnings 0.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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