subarnasaikia

Structured EDA audit for tabular competitions — target distribution, missing values, leakage scan, class imbalance, feature types, outliers, train/test shift. Use when the user says "do EDA", "audit the data", "explore the dataset", "check for leakage", or when starting a new tabular competition.

Step through a simulation agent replay to find where and why it failed — timeout, invalid move, crash, or strategic collapse. Use when the user says "debug the agent", "why did it lose", "find the failing turn", "analyze the replay", or after a regression in local eval.

Run the local kaggle-environments evaluation harness for a simulation/agent competition. Use when the user says "local eval", "test agent", "run simulation", "self-play", or before submitting an agent.

Scaffold a new Kaggle competition subfolder under competitions/<slug>/ with CLAUDE.md, README, gitignore, submission log, and standard subdirs. Use when the user says "new competition", "start <slug>", "scaffold <slug>", or provides a Kaggle competition URL.

Surface prior learnings relevant to the current task. Use before starting any non-trivial work — new experiment, new feature, new submission strategy, debugging a pattern — to check if we've been here before. Also use when the user says "what have we learned about X", "any past notes on Y", "recall", or "check learnings".

After any kaggle submission, diff against the prior best submission, fetch the new public score, write the outcome to the competition's submissions/LOG.md, and capture a learning if the delta is notable. Triggered automatically by a PostToolUse hook on `kaggle competitions submit`. Also use when the user says "review that submission" or "what did that submission do".

Blend multiple Kaggle submission CSVs via weighted average (regression) or rank average (classification/ranking). Use when the user says "blend submissions", "ensemble these CSVs", "rank average", "weighted blend", or "combine my models".

Pre-flight sanity check before any major move — new model choice, new feature, new submission, merging a big change. Pulls relevant learnings, runs a self-critique, and asks the user to confirm. Use when about to commit time to a non-trivial direction, OR when the user says "preflight", "sanity check this", "before we go".

Record a scientific-method entry for an experiment — hypothesis, setup, outcome, lesson. Use before running any non-trivial experiment (new feature, new model, new CV strategy, new agent tactic) so the hypothesis is written down BEFORE the result. Also use when the user says "log experiment", "track this test", or "record the hypothesis".

Pull the current Kaggle leaderboard for a competition and compare against the user's best score. Use when the user says "leaderboard", "how are we doing", "score vs top", or "where do we rank".

Session-end retrospective that extracts 0-3 durable learnings from the conversation, updates the LEARNINGS.md digest, and flags recurring scars. Use when the user says "retro", "retrospect", "wrap up", "end of session", "what did we learn today", or when a long working session is winding down. The Stop hook also nudges this skill.

Envia um arquivo para uma competição Kaggle com validação pré-envio e registro pós-envio. Ativado quando o usuário diz "enviar", "mandar submissão", "enviar para Kaggle" ou "fazer uma submissão".