Implement sql support

[lzehrung]

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[Copilot]

Pull request overview

Adds first-class SQL (.sql) language support across indexing, navigation, graphing, and PR review reporting—while explicitly avoiding application-code string → SQL dependency edges except through review-context heuristics.

Changes:

• Introduces SQL statement fact extraction + role classification, plus an SQL artifact graph (candidates + provenance).
• Adds SQL-to-SQL file dependency edges and SQL symbol/navigation support (go-to-definition + find-references within SQL files).
• Extends review reports and CLI output to optionally include SQL review context and SQL artifact facts.

Reviewed changes

Copilot reviewed 53 out of 54 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/sql-review-context.test.ts	Adds tests for SQL review-context inclusion/guardrails.
tests/sql-fact-extraction.test.ts	Adds comprehensive SQL statement fact extraction tests.
tests/sql-artifact-graph.test.ts	Tests SQL artifact graph + SQL-to-SQL edge behavior (incl. incremental).
tests/samples/sql/graph/report.sql	SQL graph fixture: simple query referencing users.
tests/samples/sql/graph/qualified_schema.sql	SQL graph fixture: schema-qualified table definition.
tests/samples/sql/graph/qualified_report.sql	SQL graph fixture: schema-qualified query.
tests/samples/sql/graph/app.ts	Fixture to assert SQL doesn’t link arbitrary app code.
tests/samples/sql/graph/002_alter_users.sql	SQL graph fixture: alters users.
tests/samples/sql/graph/001_create_users.sql	SQL graph fixture: defines users.
tests/samples/sql/facts/seed.sql	Fact extraction fixture: seed insert.
tests/samples/sql/facts/schema.sql	Fact extraction fixture: schema snapshot with constraints/view/index.
tests/samples/sql/facts/query.sql	Fact extraction fixture: query + join.
tests/samples/sql/facts/migration.sql	Fact extraction fixture: migration alter + drop.
tests/samples/sql/facts/dump.sql	Fact extraction fixture: dump-like write.
tests/references.test.ts	Adds SQL find-references coverage.
tests/project-file-discovery.test.ts	Ensures .sql files are discovered by default.
tests/native-parser-ownership.test.ts	Adds native ownership coverage for SQL fixtures.
tests/languages/sql.test.ts	Adds SQL language registration, chunking, indexing, and native-only assertions.
tests/goto.test.ts	Adds SQL go-to-definition coverage.
tests/cli-regressions.test.ts	Adds CLI regression for --sql-artifacts JSON output.
src/util/projectFiles.ts	Includes .sql in default project discovery patterns.
src/sql/types.ts	Defines SQL roles, fact kinds, truth tiers, and review bridge reasons.
src/sql/sourceGraph.ts	Builds SQL module index + SQL-to-SQL dependency edges with caching.
src/sql/review.ts	Implements SQL PR review context collection (changed files/literals).
src/sql/navigation.ts	Implements SQL go-to-definition + find-references within SQL files.
src/sql/index.ts	Exposes SQL submodule public exports.
src/sql/graph.ts	Projects SQL statement facts into an SQL artifact graph (candidates + provenance).
src/sql/extractFacts.ts	Implements statement splitting + fact extraction for common DDL/DML/query patterns.
src/sql/classifySqlFile.ts	Classifies SQL file roles (schema snapshot/migration/seed/etc.).
src/review.ts	Adds sqlContext to buildReviewReport output.
src/languages/definitions/sql.ts	Registers SQL language definition + queries for chunking.
src/languages/all.ts	Registers SQL in the global language registry.
src/languages.ts	Exposes SQL support via SQL_SUPPORT.
src/indexer/types.ts	Adds SQL-relevant symbol kinds (table/view/index/constraint/routine).
src/indexer/navigation.ts	Hooks SQL navigation into generic go-to/refs flows.
src/indexer/build-index.ts	Uses SQL-specific module indexing and primes SQL fact cache for graph edges.
src/index.ts	Exports SQL APIs/types from the package entrypoint.
src/graphs/symbol-graph.ts	Normalizes new symbol kinds for symbol graph output.
src/graph-edge-collector.ts	Routes .sql files through SQL edge collection; avoids edge caching for SQL.
src/graph-builder.ts	Recomputes relevant SQL edges when SQL definitions change (incremental correctness).
src/cli/help.ts	Documents --sql-artifacts flag.
src/cli.ts	Adds --sql-artifacts to include SQL artifact graph in JSON output.
README.md	Documents SQL support and its intentional scope limits.
packages/codegraph-native/src/tests.rs	Adds SQL native parser smoke coverage.
packages/codegraph-native/src/languages.rs	Adds SQL to native language list and maps to tree-sitter-sequel.
packages/codegraph-native/Cargo.toml	Adds tree-sitter-sequel dependency.
packages/codegraph-js-fallback/package.json	Adds JS fallback grammar dependency @derekstride/tree-sitter-sql.
package-lock.json	Updates lockfile for new JS fallback dependency.
docs/superpowers/plans/2026-05-12-sql-schema-graph-support.md	Updates plan doc to reflect revised SQL approach.
docs/scenario-catalog.md	Documents SQL scenarios and adds SQL coverage entries.
docs/library-api.md	Documents SQL artifact APIs and sqlContext in review output.
docs/language-parity.md	Adds SQL to parity matrix + notes about semantics/scope.
docs/cli.md	Documents --sql-artifacts output and sqlContext in review JSON.
codegraph-skill/codegraph/SKILL.md	Updates skill doc to describe SQL support and flags.

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[Copilot]

Pull request overview

Copilot reviewed 53 out of 54 changed files in this pull request and generated 5 comments.

Comments suppressed due to low confidence (1)

src/sql/review.ts:86

• collectChangedSqlLiteralObjects does an O(changedFiles × sqlObjectNames) regex scan, constructing a new RegExp for every object name and testing it against each changed file's full source. If a repo has many SQL facts, this can become a bottleneck. Consider precomputing patterns once, short-circuiting based on a cheap substring check, or building a single combined matcher (e.g., tokenizing identifiers in the changed source and intersecting with the known object-name set).

[Copilot]

Pull request overview

Copilot reviewed 53 out of 54 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 53 out of 54 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 53 out of 54 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 53 out of 54 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 54 out of 55 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 54 out of 55 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 54 out of 55 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 55 out of 56 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 55 out of 56 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 55 out of 56 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 55 out of 56 changed files in this pull request and generated no new comments.