webview2: Allow WebView2 to be discoverable by apps.

[Aetopia]

Adds a registry entry that allows any WebView2 enabled app to discover the runtime installed by Scoop.

Reference: https://ntlite.com/community/threads/webview2-portable.5560/

The WEBVIEW2_BROWSER_EXECUTABLE_FOLDER variable isn't sufficient for apps to discover the runtime.
Since the WebView2 Loader will actually load into the registry if the app isn't specifically configured to read the variable.

• Use conventional PR title: <manifest-name[@version]|chore>: <general summary of the pull request>
• I have read the Contributing Guide

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR modifies the WebView2 JSON manifest to add installer and uninstaller scripts for registry configuration. The installer script registers the WebView2 runtime location under the Windows EdgeUpdate ClientState registry path, setting the EBWebView value to the installation directory ($dir). The uninstaller script removes that registry entry via reg.exe with suppressed output. The file structure is adjusted to accommodate these new configuration sections.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• ScoopInstaller/Extras#17085: Also modifies bucket/webview2.json to control how a WebView2 installation is referenced/overridden (portable manifest and environment-directory mapping).

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description includes the required conventional PR title checkbox marked as completed, confirms reading the contributing guide, and provides clear context about the registry entry addition and why it's necessary for WebView2 discoverability.
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.
Title check	✅ Passed	The title accurately describes the main change: adding a registry entry to make WebView2 discoverable by applications.

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

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[coderabbitai]

Actionable comments posted: 1

🧹 Nitpick comments (1)

bucket/webview2.json (1)

30-38: Please run manifest validation/install checks for this change set.

Recommended local checks for this PR:

• scoop config debug true
• scoop config gh_token <your-github-token> (optional, read-only)
• .\bin\checkver.ps1 -App webview2 -f
• .\bin\formatjson.ps1 -App webview2
• scoop install bucket/webview2.json -a 32bit
• scoop install bucket/webview2.json -a 64bit
• scoop install bucket/webview2.json -a arm64

As per coding guidelines: “Provide clear instructions for testing the manifest locally before submission.”

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@bucket/webview2.json` around lines 30 - 38, The PR added changes to
bucket/webview2.json (installer and uninstaller scripts) but lacks the required
local manifest validation and install checks; run the recommended checks against
bucket/webview2.json: enable debug with `scoop config debug true`, optionally
set `scoop config gh_token`, run `.\bin\checkver.ps1 -App webview2 -f` and
`.\bin\formatjson.ps1 -App webview2`, then attempt installs for all
architectures `scoop install bucket/webview2.json -a 32bit`, `-a 64bit`, and `-a
arm64` to verify the installer and uninstaller scripts ("installer" and
"uninstaller") behave correctly and produce a valid manifest before merging.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@bucket/webview2.json`:
- Around line 36-38: The uninstaller script currently deletes the entire
ClientState registry key; update the "uninstaller" -> "script" so it deletes
only the manifest-owned value instead of the key by using reg.exe with the /v
"EBWebView" option (targeting the same
HKCU\SOFTWARE\Microsoft\EdgeUpdate\ClientState\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}
path) and keep the /f and Out-Null behavior; locate the "uninstaller" object and
replace the reg.exe delete command accordingly.

---

Nitpick comments:
In `@bucket/webview2.json`:
- Around line 30-38: The PR added changes to bucket/webview2.json (installer and
uninstaller scripts) but lacks the required local manifest validation and
install checks; run the recommended checks against bucket/webview2.json: enable
debug with `scoop config debug true`, optionally set `scoop config gh_token`,
run `.\bin\checkver.ps1 -App webview2 -f` and `.\bin\formatjson.ps1 -App
webview2`, then attempt installs for all architectures `scoop install
bucket/webview2.json -a 32bit`, `-a 64bit`, and `-a arm64` to verify the
installer and uninstaller scripts ("installer" and "uninstaller") behave
correctly and produce a valid manifest before merging.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 8fca53bd-7aa2-44fa-a62f-cb76e869eaa8

📥 Commits

Reviewing files that changed from the base of the PR and between 44fc930 and ec50cb2.

📒 Files selected for processing (1)

• bucket/webview2.json