[feat][backend] add search trace tree open api #754

	name: CI@backend

	on:
	push:
	branches: ["main", "release/**"]
	paths:
	- 'backend/**'
	- '.github/workflows/backend-ci.yaml'
	pull_request:
	branches: ["main", "release/**"]
	paths:
	- 'backend/**'
	- '.github/workflows/backend-ci.yaml'
	workflow_dispatch:

	permissions:
	contents: read
	pull-requests: read

	jobs:
	golang-lint:
	name: Golang CI Lint
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./backend
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Go
	uses: actions/setup-go@v5
	with:
	go-version: "1.24.0"

	- name: Golang Lint
	# https://golangci-lint.run/
	run: \|
	# Install golangci-lint
	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh \| sh -s -- -b $(go env GOPATH)/bin v2.2.1

	# Add golangci-lint to PATH
	export PATH=$PATH:$(go env GOPATH)/bin

	# Run golangci-lint
	golangci-lint run --config ../.github/.golangci.yaml

	build-and-unittest:
	name: Build and Unit Test
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./backend
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Setup Go
	uses: actions/setup-go@v5
	with:
	go-version: "1.24.0"

	- name: Build
	run: go build -v ./...

	- name: Run Unit Tests
	run: \|
	go test -gcflags="all=-N -l" -race -v -coverprofile=coverage.out -coverpkg=./... ./...

	- name: Upload Coverage to Codecov
	uses: codecov/codecov-action@v5
	with:
	files: ./coverage.out
	flags: unittests
	fail_ci_if_error: false
	verbose: true
	token: ${{ secrets.CODECOV_TOKEN }}

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