mcp command `list_projects` incorrectly constructs `sourceRoot` for multi-project workspaces

[midthun]

Command

other

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

The Angular CLI MCP list_projects tool incorrectly constructs the sourceRoot by joining it with project.root, even though sourceRoot is already workspace-relative in angular.json.

This results in invalid paths for projects in a standard multi-project workspace created with --no-create-application.

Minimal Reproduction

Steps to reproduce

ng new my-workspace --no-create-application
cd my-workspace
ng generate application app-one

This produces the following in angular.json:

{
  "root": "projects/app-one",
  "sourceRoot": "projects/app-one/src"
}

Run the Angular CLI MCP tool:

list_projects

Expected behavior

sourceRoot should be reported exactly as defined in angular.json:

projects/app-one/src

Actual behavior

sourceRoot is constructed as:

projects/app-one/projects/app-one/src

This appears to come from:

const sourceRoot = posix.join(project.root, project.sourceRoot ?? 'src');

Impact

• Incorrect sourceRoot paths returned by list_projects
• Downstream tools may fail to locate source files
• Causes incorrect assumptions about workspace structure (e.g. expecting a root /src)

---

Proposed fix

Do not join project.root with project.sourceRoot, since sourceRoot is already workspace-relative:

const sourceRoot = project.sourceRoot ?? posix.join(project.root, 'src');

Exception or Error

Your Environment

_                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI       : 21.2.3
Angular           : 21.2.5
Node.js           : 24.10.0
Package Manager   : npm 11.6.1
Operating System  : darwin arm64

┌───────────────────────────┬───────────────────┬───────────────────┐
│ Package                   │ Installed Version │ Requested Version │
├───────────────────────────┼───────────────────┼───────────────────┤
│ @angular/build            │ 21.2.3            │ ^21.2.3           │
│ @angular/cli              │ 21.2.3            │ ^21.2.3           │
│ @angular/common           │ 21.2.5            │ ^21.2.0           │
│ @angular/compiler         │ 21.2.5            │ ^21.2.0           │
│ @angular/compiler-cli     │ 21.2.5            │ ^21.2.0           │
│ @angular/core             │ 21.2.5            │ ^21.2.0           │
│ @angular/forms            │ 21.2.5            │ ^21.2.0           │
│ @angular/platform-browser │ 21.2.5            │ ^21.2.0           │
│ @angular/router           │ 21.2.5            │ ^21.2.0           │
│ ng-packagr                │ 21.2.1            │ ^21.2.0           │
│ rxjs                      │ 7.8.2             │ ~7.8.0            │
│ typescript                │ 5.9.3             │ ~5.9.2            │
│ vitest                    │ 4.1.0             │ ^4.0.8            │
└───────────────────────────┴───────────────────┴───────────────────┘

Anything else relevant?

No response