logging-session

Logging Session

This skill records coding session summaries to a local SQLite database stored in your local path, so you can later query and summarize your work across projects and time periods.

Why this matters

Coding sessions produce valuable knowledge — decisions made, problems solved, approaches tried and abandoned. Without capturing these, each session starts from scratch. This skill turns conversations into searchable, summarizable records that feed into daily standups, weekly reviews, and long-term project memory.

Database location

The database path is defined by db_path in config.json, defaulting to:

~/Library/Mobile Documents/iCloud~md~obsidian/Documents/vault4life/dev_knowledge.db

To customize, edit <skill-path>/config.json.

If the database doesn't exist yet, initialize it:

python3 <skill-path>/scripts/init_db.py

The script reads the path from config.json automatically. You can also specify a path manually:

python3 <skill-path>/scripts/init_db.py /path/to/your/dev_knowledge.db

Schema

CREATE TABLE dev_logs (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    project_name TEXT NOT NULL,
    session_id TEXT NOT NULL,
    parent_id INTEGER DEFAULT NULL,
    task_category TEXT,
    user_query TEXT NOT NULL,
    thought_process TEXT,
    final_result TEXT,
    file_paths TEXT,
    git_hash TEXT,
    extra_metadata TEXT,
    FOREIGN KEY (parent_id) REFERENCES dev_logs (id)
);

When to record

Record a session log entry when:

1. User explicitly asks — they say "record this session", "log this conversation", "logging-session", etc.
2. A meaningful task completes — when a significant coding task is done (bug fixed, feature added, refactoring completed), and the user wants it captured.
3. Via Stop hook — when the hook fires automatically at session end, synthesize the entire conversation into a log entry.

Do NOT record trivial interactions (quick questions, simple lookups, clarifications) unless the user asks.

How to record a session log

When recording, you need to synthesize the conversation into a structured entry. Don't just copy-paste — distill the essence.

Step 1: Gather context

Collect these fields from the conversation and environment:

Step 2: Write the entry

Run the save script:

python3 <skill-path>/scripts/save_log.py \
  --project "<project_name>" \
  --session "<session_id>" \
  --query "<user_query>" \
  --thought "<thought_process>" \
  --result "<final_result>" \
  --category "<task_category>" \
  --files <file1> <file2> \
  --git "<git_hash>"

For fields with spaces or special characters, wrap in quotes. The --parent, --category, --files, --git, and --meta flags are optional.

Step 3: Confirm

After saving, tell the user:

• The log entry ID
• A brief summary of what was recorded

Example: "Session logged as #5 — recorded the auth bug fix in project my-app."

Querying session logs

Summarize recent work

When the user asks for a summary (daily, weekly, or custom range):

# Last 7 days for current project
python3 <skill-path>/scripts/query_logs.py \
  --project "<project_name>" \
  --days 7 \
  --format markdown

# Today's logs across all projects
python3 <skill-path>/scripts/query_logs.py \
  --days 1 \
  --format markdown

# Specific date range (YYYYMMDD format, inclusive)
python3 <skill-path>/scripts/query_logs.py \
  --start-date 20260501 \
  --end-date 20260515 \
  --format markdown

# Specific session's full thread
python3 <skill-path>/scripts/query_logs.py \
  --session "<session_id>" \
  --format ai

Output formats

• markdown — structured Markdown with headers by date (good for reports and Obsidian)
• ai — plain text blocks, compact (good for feeding back to AI)
• json — raw JSON array (good for programmatic processing)

Weekly Project Summary (项目周报)

When the user asks to summarize work by project for the past week or generate a weekly report, use weekly_summary.py. This script groups entries by project, shows task category breakdowns, and lists individual session details — all in a clean markdown table format.

Trigger phrases: "总结过去一周的工作", "本周工作总结", "生成周报", "项目周报", "weekly summary", "summarize past week's work"

# All projects, past 7 days
python3 <skill-path>/scripts/weekly_summary.py --days 7 --format markdown

# Single project, past 14 days
python3 <skill-path>/scripts/weekly_summary.py --project "my-app" --days 14

# Specific date range (YYYYMMDD format, inclusive)
python3 <skill-path>/scripts/weekly_summary.py \
  --start-date 20260501 \
  --end-date 20260515 \
  --format markdown

# Export to Obsidian
python3 <skill-path>/scripts/weekly_summary.py \
  --format markdown \
  --output ~/Library/Mobile\ Documents/iCloud~md~obsidian/Documents/vault4life/周报-$(date +%Y-W%V).md

# JSON for programmatic use
python3 <skill-path>/scripts/weekly_summary.py --format json

The markdown output includes an overview section (total entries, projects involved, time period) and per-project sections with task category distribution tables and session detail tables.

Saving to Obsidian

When the user wants to save the summary as an Obsidian note:

python3 <skill-path>/scripts/query_logs.py \
  --days 7 \
  --format markdown \
  --output ~/Library/Mobile\ Documents/iCloud~md~obsidian/Documents/vault4life/Weekly-$(date +%Y-W%V).md

Automatic logging via Stop hook

When triggered by the Stop hook (session is ending), you are the last action in this conversation. Your job: synthesize the entire conversation into one log entry and write it to the database.

What to do when the Stop hook triggers you

1. Review the full conversation — identify the user's main question/task, your approach, and the outcome.
2. Gather context — project name from CWD, git hash, files touched.
3. Classify the task — pick the most fitting category.
4. Write one log entry using the save script with all fields populated.
5. Keep it brief — this is a summary, not a transcript. One sentence each for thought_process and final_result is fine.
6. Do NOT ask the user for confirmation — just save and done. The session is ending.

Hook configuration

The Stop hook is configured in ~/.claude/settings.json. See references/hooks-guide.md for full setup details.

Task categories

Tips for good session logs

• user_query: Capture the intent, not just the literal question. "How do I fix the login crash?" is better than "login crash".
• thought_process: Focus on the why, not the what. "Tried approach A but it conflicted with the existing auth flow, so switched to B" is valuable. "Changed 3 files" is not.
• final_result: Be specific about the outcome. Include file names, function names, or the key insight. "Fixed by adding null check in UserService.validate()" is better than "It works now".
• parent_id: Use it when a session is a continuation of a previous conversation. This builds a thread of related work.