fix(cua-driver-rs)(scripts): point Rust dev installers at libs/cua-driver/rust/

[f-trycua]

Summary

Follow-up to #1674. The Rust dev installers moved up from `libs/cua-driver/rust/scripts/` to `libs/cua-driver/scripts/` in that PR, but their internal source-dir resolution wasn't adjusted. Running `.\install-local.ps1` against a fresh checkout failed with:

```
error: could not find `Cargo.toml` in `C:\Users\cuademo\cua\libs\cua-driver` or any parent directory
```

$ScriptDir/.. used to resolve to the Cargo workspace at `libs/cua-driver/rust/`. After the move it lands at `libs/cua-driver/` (no Cargo.toml).

Fix

File	What
`install-local.ps1`	`$RepoRoot = $ScriptDir..\rust` (was just `..`)
`install-local.ps1`	`$HintsTxt = $ScriptDir\post-install-hints.txt` (was via the now-broken `$RepoRoot..\cua-driver\scripts\` indirection)
`_install-local-rust.sh`	`REPO_ROOT = $SCRIPT_DIR/../rust`
`_install-local-rust.sh`	`SOURCE_SKILLS = $REPO_ROOT/Skills/cua-driver-rs`
`_install-local-rust.sh`	`HINTS_TXT = $SCRIPT_DIR/post-install-hints.txt`

The Swift dev installer (`_install-local-swift.sh`) was already pointed at `swift/` in #1674 — only the Rust side needed this follow-up.

Test plan

• `bash -n _install-local-rust.sh` clean
• Verified `libs/cua-driver/rust/Cargo.toml` and `libs/cua-driver/rust/Skills/cua-driver-rs/` exist at the new $REPO_ROOT
• Reviewer: run `./scripts/install-local.ps1` from a fresh checkout on Windows — should build + install (the failing path that prompted this PR)
• Reviewer: run `./scripts/install-local.sh` on Linux — should auto-select Rust backend, build, install
• Reviewer: run `./scripts/install-local.sh` on macOS — should default to Swift backend (Swift side unchanged)

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated installation script path configurations for improved workspace root resolution and build artifact handling during local installations.

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Ignored		May 24, 2026 11:14am

[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: af804b87-b928-4e4d-8f6e-2dd872e3862f

📥 Commits

Reviewing files that changed from the base of the PR and between 53e6736 and 0a4ad31.

📒 Files selected for processing (2)

• libs/cua-driver/scripts/_install-local-rust.sh
• libs/cua-driver/scripts/install-local.ps1

---

📝 Walkthrough

Walkthrough

Installation scripts for the CUA driver are updated to compute the Rust workspace root from libs/cua-driver/rust/ and resolve the post-install hints file from the script directory. Both Bash and PowerShell scripts make parallel path resolution updates.

Changes

Rust workspace and hints path resolution

Layer / File(s)	Summary
Bash script workspace and path resolution libs/cua-driver/scripts/_install-local-rust.sh	REPO_ROOT now resolves to the Rust workspace under libs/cua-driver/rust/. Skill pack staging source and post-install hints file paths are updated to use the new root and script directory locations respectively.
PowerShell script workspace and path resolution libs/cua-driver/scripts/install-local.ps1	$RepoRoot is updated to resolve the Rust workspace under libs/cua-driver/rust/. Post-install hints file ($HintsTxt) is changed to load from the script directory instead of the repo-root-derived path.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• trycua/cua#1664: Both PRs adjust the installers' post-install hint loading—centralizing/pointing to the shared post-install-hints.txt and keeping {{BINARY}} substitution consistent—so the main PR's _install-local-rust.sh/install-local.ps1 path fixes are directly aligned with the retrieved PR's shared hints work.

Poem

🐰 A script hops along a clearer path,
From parent's shadow to the workshop's math,
Bash and PowerShell dance in tandem grace,
Finding hints beside them in their place.

🚥 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: updating Rust dev installer scripts to point to the correct Rust workspace location (libs/cua-driver/rust/) after the scripts were relocated.
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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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-install-local-rust-source-path

---

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