session-update

Token Optimization

This skill is inherently efficient due to its simple append-only workflow:

1. Minimal File Operations (Already Optimized)

Pattern: Append update to existing session file with Bash commands

# Append session update (200 tokens)
CURRENT_SESSION=$(cat .claude/sessions/.current-session 2>/dev/null)

cat >> "$CURRENT_SESSION" <<EOF

### Update - $(date '+%Y-%m-%d %H:%M')

**Summary**: $ARGUMENTS

**Git Changes**:
$(git status --porcelain | head -10)
$(git log -1 --oneline)

**Branch**: $(git branch --show-current)
EOF

Token Usage:

• •Session file lookup: ~40 tokens
• •Update template: ~100 tokens
• •Git status commands: ~60 tokens
• •Total: ~200 tokens (no optimization needed)

2. Early Exit for No Active Session (90% savings)

Pattern: Detect missing session immediately

# Quick check (80 tokens)
if [ ! -f ".claude/sessions/.current-session" ]; then
    echo "⚠️  No active session found"
    echo "   Start one with /session-start"
    exit 0  # 80 tokens total
fi

# Otherwise: Full update append (200 tokens)

Savings:

• •No session: ~80 tokens (early exit)
• •Full update: ~200 tokens
• •120 token savings (60%) when no active session

3. Bash-Based Git Summary (No File Reads)

Pattern: Use git commands instead of reading changed files

# Bash-based git summary (60 tokens)
GIT_STATUS=$(git status --porcelain | head -10)
LAST_COMMIT=$(git log -1 --oneline)
BRANCH=$(git branch --show-current)

# Alternative: Read changed files (~300+ tokens)
# for file in $(git status --porcelain | awk '{print $2}'); do
#     Read "$file"  # 50-200 tokens per file
# done

Token Usage:

• •Bash commands: ~60 tokens
• •File reads: ~300+ tokens (reading changed files)
• •Already optimized - 80% savings vs file reading

4. Incremental TODO Status (Optional)

Pattern: Read TODO cache if available, skip if not

# Optional TODO status (100 tokens if available, 0 if not)
if [ -f ".claude/cache/todos/summary.json" ]; then
    TODO_STATUS=$(jq -r '.summary' .claude/cache/todos/summary.json)
    echo "**TODO Progress**: $TODO_STATUS"
fi

# Don't generate TODO status from scratch (would be 500+ tokens)

Token Usage:

• •Cached TODO status: ~100 tokens
• •Generate from scratch: ~500+ tokens
• •Skip if unavailable: 0 tokens (graceful degradation)

5. Real-World Token Usage Distribution

Typical Scenarios:

1. •

   Standard Update (180-250 tokens)

   • •Session lookup: 40 tokens
   • •Update template: 100 tokens
   • •Git status: 60 tokens
   • •TODO status (if cached): 100 tokens
   • •Total: ~300 tokens (with TODO)
   • •Total: ~200 tokens (without TODO)
2. •

   No Active Session - Early Exit (70-90 tokens)

   • •Session check: 40 tokens
   • •Warning message: 40 tokens
   • •Total: ~80 tokens
3. •

   Minimal Update (150-200 tokens)

   • •Session lookup: 40 tokens
   • •Timestamp + message: 80 tokens
   • •Git branch only: 30 tokens
   • •Total: ~150 tokens

Expected Token Usage:

• •Baseline: 150-250 tokens (already efficient)
• •Early exit: 80 tokens (60% savings)
• •Average: ~200 tokens (minimal overhead)

Optimization Summary

Key Insight: This skill is already near-optimal at ~200 tokens due to its simple append workflow with Bash commands. No file reads are performed - only git commands and template appending. Early exit provides 60% savings when no session is active.

Update the current development session by:

1. •Check if .claude/sessions/.current-session exists to find the active session
2. •If no active session, inform user to start one with /project:session-start
3. •If session exists, append to the session file with:
   • •Current timestamp
   • •The update: $ARGUMENTS (or if no arguments, summarize recent activities)
   • •Git status summary:
     • •Files added/modified/deleted (from git status --porcelain)
     • •Current branch and last commit
   • •Todo list status:
     • •Number of completed/in-progress/pending tasks
     • •List any newly completed tasks
   • •Any issues encountered
   • •Solutions implemented
   • •Code changes made

Keep updates concise but comprehensive for future reference.

Example format:

### Update - 2025-06-16 12:15 PM

**Summary**: Implemented user authentication

**Git Changes**:
- Modified: app/middleware.ts, lib/auth.ts
- Added: app/login/page.tsx
- Current branch: main (commit: abc123)

**Todo Progress**: 3 completed, 1 in progress, 2 pending
- ✓ Completed: Set up auth middleware
- ✓ Completed: Create login page
- ✓ Completed: Add logout functionality

**Details**: [user's update or automatic summary]