Angular CLI: 21.0.0-next.6 Release

@schematics/angular

| Commit | Description | | -- | -- | | | add AGENTS.md support to ai-config schematic | | | add fixture.whenStable in spec files when zoneless apps | | | make ai-config schematic non-destructive | | | Out of the box support for PM2 | | | use bracket notation for process.env['pm_id'] |

@angular/cli

| Commit | Description | | -- | -- | | | add --json output to ng version | | | overhaul ng version command output | | | improve JSON schema parsing for command options |

@angular-devkit/build-angular

| Commit | Description | | -- | -- | | | mark InjectionToken as pure for improved tree-shaking |

@angular/build

| Commit | Description | | -- | -- | | | add browserViewport option for vitest browser tests | | | add advanced coverage options to unit-test builder | | | mark InjectionToken as pure for improved tree-shaking | | | provide default excludes for vitest coverage | | | relax requirement for files to be in TS compilation |