Add work-log-tracker hook — lightweight session logging 🤖🤖🤖

hooks/work-log-tracker/README.md

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+---
+name: 'Work Log Tracker'
+description: 'Lightweight session logging — tracks what you worked on across repos'
+tags: ['logging', 'productivity', 'work-tracking']
+---
+
+# Work Log Tracker Hook
+
+Lightweight session logging for GitHub Copilot coding agent. Automatically records when sessions start and end, along with git repo context, so you always know what you worked on.
+
+## Overview
+
+This hook appends a JSON Lines record to `~/.copilot-work-log/sessions.jsonl` for every coding agent session:
+
+- **Session start**: timestamp, working directory, git repo name, branch
+- **Session end**: timestamp
+
+No prompts or code are logged — only metadata.
+
+## Installation
+
+1. Copy this hook folder to your repository's `.github/hooks/` directory:
+   ```bash
+   cp -r hooks/work-log-tracker .github/hooks/
+   ```
+
+2. Ensure scripts are executable:
+   ```bash
+   chmod +x .github/hooks/work-log-tracker/*.sh
+   ```
+
+3. Commit the hook configuration to your repository's default branch.
+
+## Log Format
+
+Records are appended to `~/.copilot-work-log/sessions.jsonl` in JSON Lines format:
+
+```json
+{"timestamp":"2026-01-15T10:30:00Z","event":"session_start","cwd":"/home/user/project","repo":"my-app","branch":"feature/auth","pid":12345}
+{"timestamp":"2026-01-15T11:00:00Z","event":"session_end","pid":12345}
+```
+
+## Configuration
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `WORK_LOG_DIR` | `~/.copilot-work-log` | Directory for log files |
+| `SKIP_WORK_LOG` | unset | Set to `true` to disable logging |
+
+## Privacy & Security
+
+- **No code or prompts are logged** — only session metadata (timestamps, repo name, branch)
+- Logs are stored locally in your home directory
+- Set `SKIP_WORK_LOG=true` to disable entirely
+- No external network calls
+
+## Want More?
+
+This hook provides basic session tracking. For full-featured work logging with:
+
+- ✍️ Manual brag-sheet entries with impact tracking
+- 📊 Categorized work logs (PR, bugfix, infrastructure, oncall, etc.)
+- 📝 Auto-generated markdown reports for performance reviews
+- 🔄 Git backup to keep your work log synced
+- 📁 File and PR tracking within sessions
+
+Check out **[copilot-brag-sheet](https://github.com/vidhartbhatia/copilot-brag-sheet)** — a zero-dependency Copilot CLI extension that builds on the same idea.
+
+Also see **[What-I-Did-Copilot](https://github.com/microsoft/What-I-Did-Copilot)** for another approach to AI-assisted work tracking.

hooks/work-log-tracker/hooks.json

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+{
+  "version": 1,
+  "hooks": {
+    "sessionStart": [
+      {
+        "type": "command",
+        "bash": ".github/hooks/work-log-tracker/log-session-start.sh",
+        "cwd": ".",
+        "timeoutSec": 5
+      }
+    ],
+    "sessionEnd": [
+      {
+        "type": "command",
+        "bash": ".github/hooks/work-log-tracker/log-session-end.sh",
+        "cwd": ".",
+        "timeoutSec": 5
+      }
+    ]
+  }
+}

hooks/work-log-tracker/log-session-end.sh

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+#!/bin/bash
+
+# Log session end to ~/.copilot-work-log/sessions.jsonl
+
+set -euo pipefail
+
+# Skip if logging disabled
+if [[ "${SKIP_WORK_LOG:-}" == "true" ]]; then
+  exit 0
+fi
+
+# Read input from Copilot (required by hook protocol)
+INPUT=$(cat)
+
+# Configurable log directory
+LOG_DIR="${WORK_LOG_DIR:-$HOME/.copilot-work-log}"
+mkdir -p "$LOG_DIR"
+
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+# Write JSON record
+printf '{"timestamp":"%s","event":"session_end","pid":%d}\n' \
+  "$TIMESTAMP" "$$" \
+  >> "$LOG_DIR/sessions.jsonl"
+
+exit 0

hooks/work-log-tracker/log-session-start.sh

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+#!/bin/bash
+
+# Log session start with git context to ~/.copilot-work-log/sessions.jsonl
+
+set -euo pipefail
+
+# Skip if logging disabled
+if [[ "${SKIP_WORK_LOG:-}" == "true" ]]; then
+  exit 0
+fi
+
+# Read input from Copilot (required by hook protocol)
+INPUT=$(cat)
+
+# Configurable log directory
+LOG_DIR="${WORK_LOG_DIR:-$HOME/.copilot-work-log}"
+mkdir -p "$LOG_DIR"
+
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+CWD=$(pwd)
+
+# Detect git repo and branch (fail gracefully)
+GIT_REPO=""
+GIT_BRANCH=""
+if command -v git &>/dev/null && git rev-parse --is-inside-work-tree &>/dev/null 2>&1; then
+  GIT_REPO=$(basename "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null || echo "")
+  GIT_BRANCH=$(git symbolic-ref --short HEAD 2>/dev/null || echo "")
+fi
+
+# Write JSON record (no jq dependency — pure bash)
+printf '{"timestamp":"%s","event":"session_start","cwd":"%s","repo":"%s","branch":"%s","pid":%d}\n' \
+  "$TIMESTAMP" "$CWD" "$GIT_REPO" "$GIT_BRANCH" "$$" \
+  >> "$LOG_DIR/sessions.jsonl"
+
+exit 0