fix(cua-driver-rs)(install): re-register cua-driver-serve task on every install when it already exists

[f-trycua]

Summary

Repro: user has `cua-driver-serve` registered (from a previous `install.ps1 -AutoStart`). They upgrade — `install-local.ps1` (no `-AutoStart`) drops a fresh binary, retargets the `current` junction. PATH now resolves to the fresh binary. But the scheduled task's `` is a hard-coded absolute path to the OLD release-install dir — that binary is still on disk and still has the pre-#1654 unwrapped task-action shape.

Result: `cua-driver autostart kick` runs the OLD binary, which displays a visible console window at logon. Even though everything ELSE on the system is now the new binary.

Discovered while debugging "why does autostart kick still show the console" with a user on Windows. Confirmed by checking `strings <task's-command-path> | grep 'WindowStyle Hidden'` → 0 hits (pre-fix binary); the fresh source build had 2 hits.

Fix

Both `install.ps1` and `install-local.ps1` now sniff for an existing `cua-driver-serve` task post-install:

```powershell
if (-not $AutoStart) {
schtasks.exe /Query /TN "cua-driver-serve" 2>$null | Out-Null
if ($LASTEXITCODE -eq 0) {
# Re-register against the freshly-installed binary
Register-CuaDriverAutostart -InstalledBinary $installedBinary
}
}
```

Idempotent. Covers the upgrade path explicitly. If no task is registered, behaviour is unchanged — initial autostart opt-in still requires `-AutoStart` (or `cua-driver autostart enable`).

End-to-end

```
$ schtasks /Query /TN cua-driver-serve /XML | findstr powershell.exe

(empty — old binary's REGISTER_PS used direct cua-driver.exe action)

$ .\install-local.ps1
==> registering Scheduled Task 'cua-driver-serve' (because pre-existing task detected)
Re-registered. Task action now uses this build's hidden-console wrapper.

$ schtasks /Query /TN cua-driver-serve /XML | findstr powershell.exe
powershell.exe
-NoProfile -WindowStyle Hidden -NonInteractive ...

$ cua-driver autostart kick

no visible window

```

Test plan

• PowerShell parser accepts both files (`[Parser]::ParseFile` returns no errors)
• Sniff branch only runs when task exists; `schtasks /Query` returns non-zero when missing
• Reviewer: run `install-local.ps1` on a Windows host that has `cua-driver-serve` registered with the legacy shape, confirm the action transitions to the wrapped powershell.exe form
• Reviewer: run on a Windows host with NO task, confirm no new registration happens

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Improved installer behavior to automatically update existing auto-start scheduled tasks when installing a new version, ensuring the task points to the current binary without requiring manual reconfiguration.

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Ignored		May 24, 2026 2:04pm

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: da240ebb-7afb-4d08-a4ca-cf611910a637

📥 Commits

Reviewing files that changed from the base of the PR and between 89fd8e9 and c380704.

📒 Files selected for processing (2)

• libs/cua-driver/scripts/install-local.ps1
• libs/cua-driver/scripts/install.ps1

---

📝 Walkthrough

Walkthrough

Both install.ps1 and install-local.ps1 now re-register an existing cua-driver-serve Scheduled Task when the -AutoStart flag is omitted, ensuring the task points to the newly built or installed cua-driver.exe instead of a stale binary path. Task lookup is error-tolerant, and failures are reported to the user with remediation guidance.

Changes

Scheduled Task Re-registration Without AutoStart

Layer / File(s)

Summary

Scheduled task re-registration without AutoStart libs/cua-driver/scripts/install-local.ps1, libs/cua-driver/scripts/install.ps1

When -AutoStart is omitted, both scripts query for an existing cua-driver-serve scheduled task. If the task is found, it is re-registered to use the newly built/installed cua-driver.exe binary by invoking Register-CuaDriverAutostart. Error handling allows the installation to continue if the task does not exist, and user-facing messages indicate re-registration success or failure requiring manual remediation.

Possibly Related PRs

• trycua/cua#1654: Modifies scheduled task re-registration so the task's action launches the correct newly installed cua-driver binary via the hidden PowerShell wrapper.
• trycua/cua#1630: Updates Windows autostart handling for the cua-driver-serve scheduled task registration details via the autostart enable flow.
• trycua/cua#1550: Introduces cua-driver autostart CLI and updates install scripts to delegate scheduled-task registration through that command.

Estimated Code Review Effort

🎯 2 (Simple) | ⏱️ ~15 minutes

Poem

🐰 A task once forgotten, now springs back to life—
The script checks and re-registers, cutting through strife!
Fresh binaries bound to old schedules anew,
With gentle error-handling, the installation shines true! ✨

🚥 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 and specifically describes the main change: re-registering the cua-driver-serve scheduled task on install when it already exists. It directly aligns with the primary objective of fixing the upgrade path bug.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch install-local-resync-autostart

---

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