downgrade go version to 24.1

fix(dockerfile): update tzdata package to 2026a-r0 version

refactor(ai): improve error handling and add response timing tracking

feat(providers): update model defaults and timeouts

chore(deps): update go version and dependencies

chore: update alpine image and dependencies, format test code

feat(ai provider): implement timeout setting for ai providers

feat(ai service): enhance message cleanup for provider responses

feat(gemini): update default model to gemini-2.5-flash-lite

docs(readme): update jira task style description