perf: replace goheader linter with custom check (#37599)

Replace the [slow `goheader` linter](https://github.com/denis-tingaikin/go-header/issues/70) with a
custom check.

Local go lint time is down from 247s to 32s. 6 new files that were
previously undetected because of `//go:build ignore` are fixed. The exit
code of the make target preserves the golangci-lint exit code, if
present.

Also refactors and consolidates the linting targets.

Signed-off-by: silverwind <me@silverwind.io>
Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

.github/workflows/cache-seeder.yml

@@ -54,8 +54,6 @@ jobs:
       matrix:
         include:
           - { job: lint-backend, tags: "bindata", target: "lint-backend" }
-          - { job: lint-go-windows, tags: "bindata", target: "lint-go-windows" }
-          - { job: lint-go-gogit, tags: "bindata gogit", target: "lint-go" }
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0

.github/workflows/pull-compliance.yml

@@ -64,48 +64,6 @@ jobs:
       - if: needs.files-changed.outputs.actions == 'true'
         run: make lint-actions
 
-  lint-go-windows:
-    if: needs.files-changed.outputs.backend == 'true' || needs.files-changed.outputs.actions == 'true'
-    needs: files-changed
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
-        with:
-          go-version-file: go.mod
-          check-latest: true
-          cache: false
-      - uses: ./.github/actions/go-cache
-        with:
-          cache-name: lint-go-windows
-          lint-cache: "true"
-      - run: make deps-backend deps-tools
-      - run: make lint-go-windows
-        env:
-          TAGS: bindata
-          GOOS: windows
-          GOARCH: amd64
-
-  lint-go-gogit:
-    if: needs.files-changed.outputs.backend == 'true' || needs.files-changed.outputs.actions == 'true'
-    needs: files-changed
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
-        with:
-          go-version-file: go.mod
-          check-latest: true
-          cache: false
-      - uses: ./.github/actions/go-cache
-        with:
-          cache-name: lint-go-gogit
-          lint-cache: "true"
-      - run: make deps-backend deps-tools
-      - run: make lint-go
-        env:
-          TAGS: bindata gogit
-
   checks-backend:
     if: needs.files-changed.outputs.backend == 'true' || needs.files-changed.outputs.actions == 'true'
     needs: files-changed