Merge pull request #11 from caiovicentino/fix/all-issues

test: add tests for issue fixes #2, #6, #10

fix: filter out closed and expired markets in all discovery queries (#2)

fix: update fastapi to >=0.115.0 for anyio compatibility (#6)

fix: mask API credentials in logs, use DEBUG level (#10)

docs: add project completion summary

feat: comprehensive accessibility improvements - all phases complete

fix: correct indentation after rate limiter refactor

fix: correct rate limiter context manager usage

fix: remove duplicate json imports inside functions

fix: add missing json imports in tools modules

fix: enable read-only mode when API credentials unavailable

fix: correct realtime tools function name

chore: remove unnecessary internal documentation files

docs: update community links to official websites