refactor: isolate model families end to end

Move every model family into a self-owned build, runtime, and test slice. Keep shared Python and native code to bundle, loader, task, engine, and CI contracts, and remove the retired central architecture in the same change.

BREAKING CHANGE: remove the legacy builders, runtime registry, bundle format, profiles, validation framework, examples, tools, scripts, and compatibility paths.

Signed-off-by: yifeif-nv <277870278+yifeif-nv@users.noreply.github.com>

Author: yifeif-nv

.dockerignore

@@ -1,9 +1,6 @@
 # SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-# The repository Dockerfile installs the stable base toolchain and copies only
-# its model-agnostic package downloader. Family profiles are prepared per proof.
+# The development image is self-contained and copies no repository files.
+# Keep every workspace artifact out of the Docker build context.
 *
-!tools/
-!tools/ci/
-!tools/ci/profile_downloader.py

.github/scripts/build-python-profiles.py

@@ -87,10 +87,6 @@ jobs:
       contents: read
     env:
       CI_BASE_REF: ${{ github.sha }}^1
-    outputs:
-      run_unit_tests: ${{ steps.impact.outputs.run_unit_tests }}
-      unit_scope: ${{ steps.impact.outputs.unit_scope }}
-      python_test_targets: ${{ steps.impact.outputs.python_test_targets }}
     steps:
       - name: Check out the exact PR merge
         uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803