Fix all-users addin manifest path for Revit 2027+

[tay0thman]

Fix all-users addin manifest path for Revit 2027+

Problem

Revit 2027 changed how all-users add-in manifests are discovered. The previous three paths behave as follows:

fixes #3275

Path	Revit 2027 Behavior
%ProgramData%\Autodesk\Revit\Addins\2027	Ignored — journal says "won't be loaded"
C:\Program Files\Autodesk\Revit 2027\AddIns\	Rejected — reserved for signed internal add-ins only
C:\Program Files\Autodesk\Revit\Addins\2027	Works — new shared third-party location

The current GetRevitAddonsFolder() builds the second path (install-dir based) for 2027+ --allusers attachments, which Revit rejects with "not signed as internal addin".

Revit 2027 journal explicitly states:

Add-in manifest file from: C:\ProgramData\Autodesk\Revit\Addins\2027\pyRevit.addin, won't be loaded. All-users Add-in manifest files must be installed to: C:\Program Files\Autodesk\Revit\Addins\2027

Fix

Simplified GetRevitAddonsFolder() in RevitAddons.cs to use the correct shared path for Revit 2027+:

C:\Program Files\Autodesk\Revit\Addins\<year>

Removed the RevitProduct.ListInstalledProducts() registry lookup which was building the wrong base path.

Changed files

• dev/pyRevitLabs/pyRevitLabs.TargetApps.Revit/RevitAddons.cs — core path fix
• Updated binary files (bin/, bin/netcore/, bin/netfx/)

Testing

• pyrevit attach <clone> default --installed --allusers places manifest at C:\Program Files\Autodesk\Revit\Addins\2027\
• Revit 2027 loads pyRevit tab successfully from the new path (no signing errors)
• Revit 2026 and earlier still use %ProgramData% path (unchanged)
• Per-user path (%APPDATA%) unchanged for all versions
• pyrevit env shows correct attachment info for all Revit versions (2023–2027)

[tay0thman]

@jmcouffin I had to recreate this PR because my earlier commits, combined with Copilot edits, were a total mess. Copilot review is welcome.

[Copilot]

Pull request overview

This PR updates pyRevit’s all-users add-in manifest folder resolution to match Revit 2027+’s new discovery rules, ensuring pyrevit attach --allusers writes manifests to the location Revit will actually load.

Changes:

• Updated RevitAddons.GetRevitAddonsFolder() to use %ProgramFiles%\Autodesk\Revit\Addins\<year> for all-users manifests on Revit 2027+ (and keep %ProgramData% for ≤2026).
• Updated unit tests to validate the new post-2027 all-users path behavior and the 2026/2027 boundary.
• Refreshed distributed binaries under bin/ for net48/net8 outputs.

Reviewed changes

Copilot reviewed 2 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
dev/pyRevitLabs/pyRevitLabs.TargetApps.Revit/RevitAddons.cs	Switches 2027+ all-users add-in manifest base folder to the new shared Program Files location; preserves legacy behavior for ≤2026 and per-user installs.
dev/pyRevitLabs/pyRevitLabs.UnitTests/pyRevitLabs.UnitTests.RevitAddons.cs	Updates tests to assert the new Program Files-based structure for 2027+ and verify the 2026/2027 boundary.
bin/pyRevitLabs.TargetApps.Revit.dll	Updated compiled binary reflecting the path changes.
bin/netfx/pyRevitLabs.TargetApps.Revit.dll	Updated net48 binary reflecting the path changes.
bin/netcore/pyRevitLabs.TargetApps.Revit.dll	Updated net8.0-windows binary reflecting the path changes.