chore: add dockerignore, cron script, update feeds

cron_update.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -euo pipefail
+
+# ─────────────────────────────────────────────
+# cron_update.sh — run daily via cron
+# ─────────────────────────────────────────────
+# 1. Generate RSS feeds
+# 2. Commit & push updated feeds to Gitea
+#
+# Designed for Hermes cron or system cron.
+# ─────────────────────────────────────────────
+
+REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$REPO_DIR"
+
+# Setup Python
+PYTHON=$(command -v python3 || command -v python)
+
+# Try venv first, fallback to system python
+if [[ -f .venv/bin/python ]]; then
+    PYTHON=".venv/bin/python"
+fi
+
+# Verify deps installed
+echo "[cron] Using: $PYTHON ($($PYTHON --version))"
+
+# Generate feeds (save in repo root — Gitea raw URL serves directly)
+echo "[cron] Generating RSS feeds..."
+$PYTHON run.py --output-dir "$REPO_DIR"
+
+# Git commit & push if feed files changed
+cd "$REPO_DIR"
+CHANGED=false
+for f in feed.xml feed_weekly.xml feed_monthly.xml; do
+    if [[ -f "$f" ]]; then
+        git add "$f" && CHANGED=true
+    fi
+done
+
+if $CHANGED && ! git diff --cached --quiet; then
+    echo "[cron] Changes detected — committing and pushing..."
+    git commit -m "bot: update RSS feeds $(date '+%Y-%m-%d')"
+    git push origin main
+    echo "[cron] ✅ Pushed updated feeds to Gitea."
+else
+    echo "[cron] No changes to feeds."
+fi
+
+echo "[cron] Done."