fix(MESHCENT-002-2): CU-86akn96pm desktopLock throws inside switch instead of proper error signaling and lacks try/catch around child process calls

[flamingo]

Closes findings from rule MESHCENT-002-2 — desktopLock throws inside switch instead of proper error signaling and lacks try/catch around child process calls.

Draft — this is a starting point, not a finished change. The fix required judgment, so read it before trusting it.

#	Fix confidence	Finding	Location
1	🔴 55 low — review closely	desktopLock throws inside switch instead of proper error signaling and lacks try/catch around child process calls	modules/desktop-lock.js:36

What changed — and what was deliberately left — is explained per finding as inline review comments on the lines each finding touched.

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Run: https://product-hub.flamingo.so/admin/code-review
Run id: 06986371-2b8e-4388-aee4-5d1dc04f8838

Merging this PR is recorded as acceptance of the rule that produced it;
closing it unmerged is recorded as rejection. Both feed rule health, so
closing a wrong suggestion is useful rather than merely tidy.

ClickUp task: CU-86akn96pm MeshAgent review findings sweep (12 PRs)

[flamingo]

🦩 What this fix changed, finding by finding

1 finding(s) fixed in this draft — 1 explained inline on the diff; 1 low-confidence hunk(s) need close review before merging.

[flamingo]

🦩 🔴 desktopLock throws inside switch instead of proper error signaling and lacks try/catch around child process calls

In desktopLock.lock() (modules/desktop-lock.js), wrapped the entire switch statement in a try/catch block so any thrown value or exception from the child_process calls (execFile, waitExit, stdin/stdout handling) is caught; replaced the bare string throws ('Failed' and 'Not supported on ' + process.platform) with proper new Error(...) objects, and the catch handler re-throws as an Error object (wrapping non-Error values) to guarantee consistent error signaling for any caller up the chain. This does not add ws.send-based error reporting since this module has no access to a ws connection object — a complete fix per the stated convention would require the calling module (the one that invokes desktop-lock.lock() from a ws message handler) to wrap the call in its own try/catch and emit an error response over the websocket; that caller code is outside this file's scope and was not provided.

🤖 Prompt for AI agents

In modules/desktop-lock.js around line 36, review and complete this code-review fix: desktopLock throws inside switch instead of proper error signaling and lacks try/catch around child process calls.
What the draft fix changed: In `desktopLock.lock()` (modules/desktop-lock.js), wrapped the entire switch statement in a try/catch block so any thrown value or exception from the child_process calls (execFile, waitExit, stdin/stdout handling) is caught; replaced the bare string throws ('Failed' and 'Not supported on ' + process.platform) with proper `new Error(...)` objects, and the catch handler re-throws as an Error object (wrapping non-Error values) to guarantee consistent error signaling for any caller up the chain. This does not add ws.send-based error reporting since this module has no access to a ws connection object — a complete fix per the stated convention would require the calling module (the one that invokes `desktop-lock`.lock() from a ws message handler) to wrap the call in its own try/catch and emit an error response over the websocket; that caller code is outside this file's scope and was not provided.
The fix is LOW CONFIDENCE — verify it is correct and finish whatever it left incomplete.

fix confidence: 🔴 55 low — review closely — react 👍/👎 to teach the reviewer