refactor(schema): consolidate schema definition to single source of truth

extension/codexis.ts

@@ -15,27 +15,10 @@ import { existsSync } from "node:fs";
 import { join } from "node:path";
 import Database from "better-sqlite3";
 
-const SCHEMA = `-- .codexis/index.db schema:
---
--- files: indexed source files
---   id          INTEGER PRIMARY KEY
---   path        TEXT NOT NULL UNIQUE   -- relative to repo root
---   language    TEXT NOT NULL           -- e.g. 'go', 'typescript', 'python', 'tsx', 'proto'
---   package     TEXT                    -- package/module name (from AST or directory)
---   hash        TEXT NOT NULL           -- sha256, for incremental indexing
---   indexed_at  DATETIME
---
--- symbols: definitions extracted via tree-sitter
---   id          INTEGER PRIMARY KEY
---   file_id     INTEGER NOT NULL REFERENCES files(id)
---   name        TEXT NOT NULL
---   kind        TEXT NOT NULL           -- one of: 'function','method','class','type','interface','constant','variable','constructor'
---   line        INTEGER NOT NULL        -- 1-indexed
---   line_end    INTEGER                 -- end of definition body
---   col         INTEGER
---   col_end     INTEGER
---   exported    BOOLEAN                 -- language-specific visibility
---   parent_id   INTEGER REFERENCES symbols(id) -- e.g. method→class, field→struct`;
+// @ts-expect-error - generated file
+import schema from "./schema.sql?raw";
+
+const SCHEMA = schema;
 
 const DESCRIPTION = `Query the code index database (.codexis/index.db). Run read-only SQL to find symbols, files, and line numbers across the codebase.
 

extension/schema.sql

@@ -0,0 +1,34 @@
+-- CREATE TABLE files (
+--     id          INTEGER PRIMARY KEY,
+--     path        TEXT    NOT NULL UNIQUE,
+--     language    TEXT    NOT NULL,
+--     package     TEXT,
+--     hash        TEXT    NOT NULL,
+--     indexed_at  DATETIME DEFAULT CURRENT_TIMESTAMP
+-- );
+-- 
+-- CREATE TABLE symbols (
+--     id          INTEGER PRIMARY KEY,
+--     file_id     INTEGER NOT NULL REFERENCES files(id) ON DELETE CASCADE,
+--     name        TEXT    NOT NULL,
+--     kind        TEXT    NOT NULL CHECK(kind IN (
+--         'function', 'method', 'class', 'type',
+--         'interface', 'constant', 'variable', 'constructor'
+--     )),
+--     line        INTEGER NOT NULL,
+--     line_end    INTEGER,
+--     col         INTEGER,
+--     col_end     INTEGER,
+--     exported    BOOLEAN,
+--     parent_id   INTEGER REFERENCES symbols(id),
+--     UNIQUE(file_id, name, kind, line)
+-- );
+-- 
+-- CREATE INDEX idx_symbols_name ON symbols(name);
+-- CREATE INDEX idx_symbols_kind ON symbols(kind);
+-- CREATE INDEX idx_symbols_file_line ON symbols(file_id, line);
+-- CREATE INDEX idx_symbols_parent ON symbols(parent_id);
+-- CREATE INDEX idx_symbols_exported ON symbols(exported, kind);
+-- CREATE INDEX idx_files_path ON files(path);
+-- CREATE INDEX idx_files_language ON files(language);
+-- CREATE INDEX idx_files_package ON files(package);