Add sql<number> aggregate type assertion check

[rwdaigle]

Summary

• Adds a new Drizzle check that detects sql<number> tagged templates containing SQL aggregate functions (SUM, AVG, COUNT, MIN, MAX)
• These queries always return strings from the database driver, so the <number> generic is a false assertion that creates silent runtime type mismatches
• Bumps version to 0.10.0

Details

• Check: Detects pattern where sql<T> generic contains number AND SQL body contains aggregate keywords
• Severity: Error (sql assertion is always violated at runtime)
• Category: drizzle (part of persistence check)
• Implementation: 115 lines in persistence-check.ts, independent AST walk for sql tagged templates
• Test Coverage: 7 new tests, 1 fixture file with 5 bad + 4 safe patterns, all 213 tests passing

Verified

• All checks run and pass without regression
• Deterministic pattern matching (syntactic only, no runtime inference needed)
• Works with PostgreSQL, MySQL, and other databases that return aggregates as strings
• Documentation updated across README.md, SKILL.md, and CLAUDE.md

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

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