Data Analyst agent integration for CodeSuggestion analytics
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Integrate CodeSuggestion analytics capabilities into the Data Analyst agent.
**Epic:** &21212 Add CodeSuggestion aggregations to GLQL
**Milestone:** 18.11
**Depends on:** #592261, #592262, #592263
## Acceptance Criteria
- [ ] Agent system prompts updated with CodeSuggestion analytics capabilities
- [ ] Example questions documented and tested
- [ ] Agent successfully generates GLQL queries with `mode: analytics`
- [ ] Agent correctly interprets CodeSuggestion aggregation results
- [ ] Agent tests cover CodeSuggestion analytics scenarios
- [ ] Demo video or walkthrough created
## Example Questions
- "What's the acceptance rate for Python suggestions?"
- "Which IDE has the highest suggestion usage?"
- "Show me code suggestion trends by language"
- "Who are the top users of code suggestions?"
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