feat: add dataset summary modal on file upload

chore: promote gpt-4.1 to default model in dropdown

fix: make chart iframes responsive and extract iframe helper

feat: add rolling stats, K-Means clustering, and hypothesis testing

feat: add box plot, correlation heatmap, and descriptive statistics

fix: replace LFS-tracked CSV with a plain 100K-row sample

fix: resolve ModuleNotFoundError for tools.tools

feat: UX and design improvements across the app

temp: remove explicit CSV LFS line before migration

chore: add LFS config and fix .gitignore

chore: add Hugging Face Space README with metadata

feat: user-supplied API keys, model selector, and Anthropic support

Merge pull request #59 from Zanobo/feat/reduce_sql_query

updates to queries and tools for fewer errors

fix logging issue

Merge pull request #58 from Zanobo/feat/condense_queries

condense query functions

Merge pull request #57 from Zanobo/feat/enhance_query_csv_comp

add column names to csv query

enhance llm understanding of query.csv

Merge pull request #56 from Zanobo/feat/chat_function_refactor

refactor example question generator

refactor chat functions

fixes for graphql

Merge pull request #55 from Zanobo/feat/integrate_graphql

add new packages

add secondary query function

use environment variables for api

first version of graphql integration

add fields to file upload

Merge pull request #54 from Zanobo/feat/doc_db_integration

integration mongodb

Merge pull request #53 from Zanobo/feat/accuracy-fixes

update accurancy and bugfixes from refactor

Merge pull request #52 from Zanobo/feat/postgresql-integration

review updates

first draft of sql integration

Merge pull request #51 from Zanobo/feat/refactor-viz-update-11apr

more refactor updates

Merge pull request #49 from Zanobo/feat/refactor-viz-update-11apr

refactor and visual updates

update datetime parsing

add xlrd for xls support

Merge pull request #48 from Zanobo/bug/fixes-for-chart-gen

fixes for generation

increase the query limit

Merge pull request #47 from Zanobo/feat/bubble-chart

add bubble chart

formatting changes

bugfixes and layout updates