ui: Restructure repo to use tools/ui folder and ui / UI / llama-ui / LLAMA_UI naming (ggml-org#23064)

* webui: Move static build output from `tools/server/public` to `build/ui` directory

* refactor: Move to `tools/ui`

* refactor: rename CMake variables and preprocessor defines

- Rename LLAMA_BUILD_WEBUI -> LLAMA_BUILD_UI (old kept as deprecated)
- Rename LLAMA_USE_PREBUILT_WEBUI -> LLAMA_USE_PREBUILT_UI (old kept as deprecated)
- Backward compat: old vars auto-forward to new ones with DEPRECATION warning
- Rename internal vars: WEBUI_SOURCE -> UI_SOURCE, WEBUI_SOURCE_DIR -> UI_SOURCE_DIR, etc.
- Rename HF bucket: LLAMA_WEBUI_HF_BUCKET -> LLAMA_UI_HF_BUCKET
- Emit both LLAMA_BUILD_WEBUI and LLAMA_BUILD_UI preprocessor defines
- Emit both LLAMA_WEBUI_DEFAULT_ENABLED and LLAMA_UI_DEFAULT_ENABLED

* refactor: rename CLI flags (--webui -> --ui) with backward compat

- Add --ui/--no-ui (old --webui/--no-webui kept as deprecated aliases)
- Add --ui-config (old --webui-config kept as deprecated alias)
- Add --ui-config-file (old --webui-config-file kept as deprecated alias)
- Add --ui-mcp-proxy/--no-ui-mcp-proxy (old --webui-mcp-proxy kept as deprecated)
- Add new env vars: LLAMA_ARG_UI, LLAMA_ARG_UI_CONFIG, LLAMA_ARG_UI_CONFIG_FILE, LLAMA_ARG_UI_MCP_PROXY
- C++ struct fields: params.ui, params.ui_config_json, params.ui_mcp_proxy added alongside old fields
- Backward compat: old fields synced to new ones in g_params_to_internals

* refactor: update C++ server internals with backward compat

- Rename json_webui_settings -> json_ui_settings (both kept in server_context_meta)
- Rename params.webui usage -> params.ui (both synced, old still works)
- JSON API emits both "ui"/"ui_settings" and "webui"/"webui_settings" keys
- Server routes use params.ui_mcp_proxy || params.webui_mcp_proxy
- Preprocessor guards use #if defined(LLAMA_BUILD_UI) || defined(LLAMA_BUILD_WEBUI)

* refactor: rename CI/CD workflows, artifacts, and build script

- Rename webui-build.yml -> ui-build.yml; artifact webui-build -> ui-build
- Rename webui-publish.yml -> ui-publish.yml; var HF_BUCKET_WEBUI_STATIC_OUTPUT -> HF_BUCKET_UI_STATIC_OUTPUT
- Rename server-webui.yml -> server-ui.yml; job webui-build/checks -> ui-build/checks
- Update server.yml: job/artifact refs webui-build -> ui-build
- Update release.yml: all webui-build/publish refs -> ui-build/publish; HF_TOKEN_WEBUI_STATIC_OUTPUT -> HF_TOKEN_UI_STATIC_OUTPUT
- Update server-self-hosted.yml: webui-build -> ui-build
- Update build-self-hosted.yml: HF_WEBUI_VERSION -> HF_UI_VERSION
- Rename webui-download.cmake -> ui-download.cmake (internal refs updated)
- Update labeler.yml: server/webui -> server/ui path label

* docs: update CODEOWNERS and server README docs

- Update CODEOWNERS: team ggml-org/llama-webui -> ggml-org/llama-ui, path /tools/server/webui/ -> /tools/ui/
- Update server README.md: CLI tables show --ui flags with deprecated --webui aliases
- Update server README-dev.md: "WebUI" -> "UI", paths updated to tools/ui/

* fix: Small fixes for UI build

* fix: CMake.txt syntax

* chore: Formatting

* fix: `.editorconfig` for llama-ui

* chore: Formatting

* refactor: Use `APP_NAME` in Error route

* refactor: Cleanup

* refactor: Single migration service

* make llama-ui a linkable target

* fix: UI Build output

* fix: Missing change

* fix: separate llama-ui npm build output into build/tools/ui/dist subfolder + use cmake npm build instead of downloading ui-build.yml artifacts in CI

* refactor: UI workflows cleanup

---------

Co-authored-by: Xuan Son Nguyen <son@huggingface.co>

Author: allozaur

.editorconfig

@@ -45,7 +45,7 @@ insert_final_newline = unset
 trim_trailing_whitespace = unset
 insert_final_newline = unset
 
-[tools/server/webui/**]
+[tools/ui/**]
 indent_style = unset
 indent_size = unset
 end_of_line = unset

.github/labeler.yml

@@ -73,10 +73,10 @@ android:
     - changed-files:
         - any-glob-to-any-file:
             - examples/llama.android/**
-server/webui:
+server/ui:
     - changed-files:
         - any-glob-to-any-file:
-            - tools/server/webui/**
+            - tools/ui/**
 server:
     - changed-files:
         - any-glob-to-any-file:

.github/workflows/build-self-hosted.yml

@@ -68,6 +68,8 @@ jobs:
       - name: Determine tag name
         id: tag
         uses: ./.github/actions/get-tag-name
+        env:
+          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
 
   ggml-ci-nvidia-cuda:
     needs: determine-tag
@@ -81,7 +83,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           nvidia-smi
           GG_BUILD_CUDA=1 bash ./ci/run.sh ~/results/llama.cpp /mnt/llama.cpp
@@ -98,7 +100,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           vulkaninfo --summary
           GG_BUILD_VULKAN=1 GGML_VK_DISABLE_COOPMAT2=1 bash ./ci/run.sh ~/results/llama.cpp /mnt/llama.cpp
@@ -115,7 +117,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           vulkaninfo --summary
           GG_BUILD_VULKAN=1 bash ./ci/run.sh ~/results/llama.cpp /mnt/llama.cpp
@@ -205,7 +207,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           GG_BUILD_METAL=1 bash ./ci/run.sh ~/results/llama.cpp ~/mnt/llama.cpp
 
@@ -234,7 +236,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           GG_BUILD_WEBGPU=1 GG_BUILD_WEBGPU_DAWN_PREFIX="$GITHUB_WORKSPACE/dawn" \
             bash ./ci/run.sh ~/results/llama.cpp ~/mnt/llama.cpp
@@ -251,7 +253,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           vulkaninfo --summary
           GG_BUILD_VULKAN=1 bash ./ci/run.sh ~/results/llama.cpp ~/mnt/llama.cpp
@@ -270,7 +272,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           vulkaninfo --summary
           GG_BUILD_VULKAN=1 bash ./ci/run.sh ~/results/llama.cpp ~/mnt/llama.cpp
@@ -291,7 +293,7 @@ jobs:
           MSYSTEM: UCRT64
           CHERE_INVOKING: 1
           PATH: C:\msys64\ucrt64\bin;C:\msys64\usr\bin;C:\Windows\System32;${{ env.PATH }}
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           vulkaninfo --summary
           # Skip python related tests with GG_BUILD_LOW_PERF=1 since Windows MSYS2 UCRT64 currently fails to create
@@ -332,7 +334,7 @@ jobs:
       - name: Test
         id: ggml-ci
         env:
-          HF_WEBUI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
+          HF_UI_VERSION: ${{ needs.determine-tag.outputs.tag_name }}
         run: |
           source ./openvino_toolkit/setupvars.sh
           GG_BUILD_OPENVINO=1 GGML_OPENVINO_DEVICE=GPU GG_BUILD_LOW_PERF=1 bash ./ci/run.sh ./tmp/results ./tmp/mnt