Sqlite objects

[cs01]

Add sqlite.query() — typed object array returns

sqlite.all() returns string[] where multi-column rows are pipe-delimited ("1|Alice|NYC"), requiring .split("|") and positional indexing. sqlite.query() returns typed object arrays instead, enabling direct field access:

interface Post { id: string; title: string; url: string; }
const rows: Post[] = sqlite.query(db, "SELECT id, title, url FROM posts");
console.log(rows[0].title);  // direct field access, no split

How it works

• New LLVM IR helper @__sqlite_row_to_struct converts each row into a flat struct of i8* fields (one strdup'd column per field), replacing the pipe-delimited string builder
• @__sqlite_query and @__sqlite_query_params mirror the existing @__sqlite_all / @__sqlite_all_params helpers but return %ObjectArray* instead of %StringArray*
• The variable allocator's existing declaredType fallback handles the Post[] → interface metadata wiring automatically — no generics needed

Changes

File	Change
src/codegen/stdlib/sqlite.ts	generateQuery(), 3 new IR helpers, canHandle() updated
src/codegen/expressions/method-calls.ts	"query" dispatch case
src/codegen/infrastructure/generator-context.ts	ISqliteGenerator interface + mock
src/codegen/llvm-generator.ts	Emit 3 new helpers conditionally
tests/fixtures/builtins/sqlite-query.ts	New test fixture
.claude/rules.md	Updated for @test auto-discovery, C bridges, stale compiler, worktree setup

Test plan

• npm run build — TypeScript compiles clean
• npm test — 199/199 tests pass (including new sqlite-query fixture)
• Self-hosting passes (Stage 0 + Stage 1)
• Test covers: basic multi-row query, parameterized query, empty result set