Document weekly root cron deployment and quiet-mode verification

CHANGELOG.md

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+# Changelog
+
+## v1.0.2 - 2026-10-19
+
+### Changes
+
+- Added `gitea-github-sync.cron`, a system cron example for Monday at 03:00,
+  running as root with `--apply-quiet`.
+- Documented installing the script at a stable absolute path, installing the
+  cron file with the required ownership/permissions, and checking service/logs.
+- Clarified that quiet mode detaches the worker and records its final exit
+  status in the log; the launcher's exit status does not confirm sync success.
+- Included the existing GPL-3.0-only license in the release bundle.
+
+### Why
+
+The original server still had an older script without `--apply-quiet`, and the
+expected weekly cron entry had not been installed. Deploying the already
+published script and adding the system cron entry resolved those deployment
+gaps. The reusable cron example and verification instructions make these steps
+explicit for other installations.
+
+`--apply-quiet` was already included in v1.0.0 and v1.0.1. The synchronization
+script in v1.0.2 is byte-for-byte identical to v1.0.1; this release documents and
+packages the scheduling setup rather than claiming a new quiet-mode code change.
+
+### Verification
+
+- Confirmed that the deployed script matches the published v1.0.1 script.
+- Confirmed the installed weekly root cron entry, active/enabled cron service,
+  required commands, script syntax and successful read-only API access.
+- The scheduled synchronization itself was not manually triggered during these
+  checks; successful completion must be confirmed in the log after execution.
+
+## v1.0.1 - 2026-10-04
+
+- Required an explicit `GITEA_URL` and removed the deployment-specific fallback.
+- Added base-URL validation and documented custom hosts and web path prefixes.
+- Made the example configuration independent of a specific Gitea account.
+
+## v1.0.0 - 2026-10-04
+
+- First public release: automatic discovery of GitHub mirrors and enrichment
+  with metadata, topics, issues and comments.
+- Included dry-run, foreground apply and quiet background apply modes,
+  rate-limit handling, locking and English/YunoHost documentation.