chore: strip upstream CI/community process files

Remove GitHub Actions workflows, composite actions, issue/PR
templates, CODEOWNERS, translated READMEs, and download stats.
This is a Windows-only internal patch fork; upstream release
automation and community process docs don't apply here.

.github/workflows/stats.yml

@@ -1,35 +0,0 @@
-name: stats
-
-on:
-  schedule:
-    - cron: "0 12 * * *" # Run daily at 12:00 UTC
-  workflow_dispatch: # Allow manual trigger
-
-concurrency: ${{ github.workflow }}-${{ github.ref }}
-
-jobs:
-  stats:
-    if: github.repository == 'anomalyco/opencode'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
-    permissions:
-      contents: write
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
-
-      - name: Setup Bun
-        uses: ./.github/actions/setup-bun
-
-      - name: Run stats script
-        run: bun script/stats.ts
-
-      - name: Commit stats
-        run: |
-          git config --local user.email "action@github.com"
-          git config --local user.name "GitHub Action"
-          git add STATS.md
-          git diff --staged --quiet || git commit -m "ignore: update download stats $(date -I)"
-          git push
-        env:
-          POSTHOG_KEY: ${{ secrets.POSTHOG_KEY }}