docs: add task-oriented feature guides
docs: sync wiki with current runtime behavior Update the wiki to match the shipped callback execution, structured output, export, and storage features. Refresh installation and data model details so the docs reflect the current 0.2 surface area.
docs: add Gemini provider references to wiki
Updated Roadmap (markdown)
docs: make roadmap issue wording durable
docs: update roadmap with execution and assertion fixes
Move GEPA to v2.0 in roadmap
Add analytics milestone to roadmap
Expand roadmap with lighter eval and optimization issues
add roadmap and gemini milestone