Add new ideas from community research: Habit Tracker and Repo Summarizer

repo-summarizer.md

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+# Repo Documentation & Change Summarizer
+
+## Problem
+Git commit messages are often useless ("fixed stuff"). When you return to a project after a week, you have to read every diff to know what happened.
+
+## Instructions
+1. **Change Observer:** Use a git hook to trigger the agent whenever a `git push` happens.
+2. **Intelligent Summary:** The agent reads all new commits since the last run.
+3. **Human-Readable Digest:** The agent summarizes *all* technical changes into a simple, high-level paragraph: "Added OAuth support, refactored database connection, fixed the login UI bug."
+4. **Notification:** Post this digest to your Discord/Slack, so you're always updated on what *actually* changed in your projects.
+
+## Goal
+Turn cryptic git logs into a clean, human-readable project journal.