chore: remove star history refresh workflow

.github/workflows/star-history.yml

@@ -1,72 +0,0 @@
-name: Refresh star history chart
-
-on:
-  schedule:
-    # Twice daily at 06:00 and 18:00 UTC.
-    - cron: "0 6,18 * * *"
-  workflow_dispatch:
-
-permissions:
-  contents: write
-
-env:
-  DO_NOT_TRACK: "1"
-  KTX_TELEMETRY_DISABLED: "1"
-  NEXT_TELEMETRY_DISABLED: "1"
-
-concurrency:
-  group: star-history-refresh
-  cancel-in-progress: true
-
-jobs:
-  refresh:
-    name: Regenerate assets/star-history.svg
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          # RELEASE_PAT can push to the protected main branch; the default
-          # GITHUB_TOKEN is rejected by the branch-protection hook (GH006).
-          token: ${{ secrets.RELEASE_PAT }}
-
-      - name: Fetch fresh star-history SVG
-        run: |
-          set -euo pipefail
-          # cachebust forces star-history to regenerate instead of serving its
-          # own server-side cache; --location follows the slug-normalizing 301.
-          url="https://api.star-history.com/svg?repos=Kaelio/ktx&type=Date&cachebust=${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT}"
-          curl --fail --location --silent --show-error \
-            --retry 3 --retry-delay 5 --max-time 60 \
-            -o assets/star-history.svg.new "$url"
-          # Guard against error pages / truncated responses before overwriting.
-          if ! grep -q "</svg>" assets/star-history.svg.new; then
-            echo "Downloaded file is not a valid SVG; aborting." >&2
-            exit 1
-          fi
-          if [ "$(wc -c < assets/star-history.svg.new)" -lt 1000 ]; then
-            echo "Downloaded SVG is suspiciously small; aborting." >&2
-            exit 1
-          fi
-          # The star-history API returns the SVG without a trailing newline,
-          # which end-of-file-fixer rewrites whenever pre-commit runs
-          # --all-files on a PR. Because the refresh commit below uses [skip ci],
-          # the hook never runs against it here, so an un-normalized file
-          # silently breaks the pre-commit check on every open PR. Normalize to
-          # exactly one trailing newline before committing.
-          printf '%s\n' "$(cat assets/star-history.svg.new)" > assets/star-history.svg
-          rm -f assets/star-history.svg.new
-
-      - name: Commit if changed
-        run: |
-          set -euo pipefail
-          if git diff --quiet -- assets/star-history.svg; then
-            echo "Star-history chart unchanged; nothing to commit."
-            exit 0
-          fi
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add assets/star-history.svg
-          # [skip ci] keeps this housekeeping commit from triggering KTX CI.
-          git commit -m "chore: refresh star history chart [skip ci]"
-          git push