Fix duplicate keybinding rule when replacing with an existing rule

[kridaydave]

In upsertKeybindingRule, the replace path only dropped the entry matching replaceTarget before appending the new rule. If that new rule already existed elsewhere in the config, the result contained a duplicate binding that survived downstream and got persisted.

The filter now also excludes any entry equal to the incoming rule, so it is appended exactly once. Added a regression test covering the case where the replacement rule already exists in the config.

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Note

Low Risk
Narrow change to custom keybinding upsert/replace persistence with a targeted regression test; no auth or security impact.

Overview
Fixes duplicate keybinding entries when upsertKeybindingRule runs with a replace target and the new rule already exists elsewhere in custom config.

The pre-append filter used to drop only the replace entry, so an identical incoming rule could remain and get appended again and persisted. It now also removes any entry equal to the incoming rule, so the binding is written once.

Adds a regression test: replace mod+r with mod+alt+r when mod+alt+r is already present leaves a single mod+alt+r rule.

^{Reviewed by Cursor Bugbot for commit 6c419c6. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Fix duplicate keybinding rule when upserting with an existing replace target

When calling upsertKeybindingRule with a replace target, the new rule could be duplicated if it already existed elsewhere in the custom config. The fix extends the filter in keybindings.ts to remove entries matching either the replace target or the new rule before appending, ensuring only one instance appears in the persisted config.

^{Macroscope summarized 6c419c6.}

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Approvability

Verdict: Approved

Straightforward bug fix that prevents duplicate keybinding entries when replacing a rule with one that already exists. The change is minimal (one additional filter condition) with a clear test demonstrating the fix.

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