v0.3.0

• sync --all now bypasses default_guild_id so one run can fan out across every discovered guild without clearing the single-guild default first
• sync --full no longer aborts when forum thread discovery hits Discord 403 Missing Access; inaccessible channels are skipped and marked unavailable while accessible channels continue syncing
• startup now validates and stamps SQLite schema version via PRAGMA user_version, and fails fast if the local DB schema is newer than the running binary
• git-backed archive sharing can now export/import compressed JSONL snapshots with manifests, subscribe to a Git repo as the data source, and run in git-only mode without Discord credentials
• messages, search, and reports can automatically refresh stale git-backed data, preferring the Git snapshot before falling back to live Discord when both sources are configured
• the Discord backup publisher workflow now syncs latest messages, publishes the archive to a private GitHub repo, serializes concurrent runs, validates required secrets, and skips the member crawl for faster updates
• the backup report workflow now updates README activity stats from the backup action and keeps those queries bounded with process timeouts
• sync --latest-only adds a lightweight refresh path for checking recent Discord messages without doing a full historical crawl
• repository imports now skip expensive rebuilds when the snapshot manifest is already current, and GitHub Actions persist the warmed SQLite database across runs
• the Docker git-source smoke test now verifies that a fresh install can subscribe to a repository-only archive and query messages, SQL, and reports
• CI now uses Go 1.26.2, actions/setup-go 6.4.0, cache actions 5.0.5, Node 24 for report generation, and refreshed SQLite dependencies