Initial commit: Signal video-grabber bot

Group-chat bot that downloads videos from X/Instagram/YouTube/TikTok links
via yt-dlp and posts them back, plus /speed and /rev video toys.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,19 @@
+# Secrets — NEVER commit these
+cookies.txt
+cookies.txt.bak.*
+signal-cli-data/
+signal-cli-data.bak.*
+*.tar.gz
+
+# Local service file (contains your phone number) — use signal-bot.service.example
+signal-bot.service
+
+# Python
+venv/
+__pycache__/
+*.pyc
+
+# Editor / tooling
+.claude/
+.vscode/
+.idea/