fix(ai): register execute_sql tool in Electron tool registry

sqlQueryTool (execute_sql) was listed in BUILTIN_TOOL_CATALOG and
available in the CLI AGENT_TOOL_REGISTRY, but was never imported or
registered in the Electron-specific TOOL_REGISTRY. Users who enabled
the tool via the assistant config panel would trigger a missing-tool
error at inference time.

Add sqlQueryTool to the Electron registry following the same
adaptSharedTool pattern used by all other analysis tools. Add a
catalog/registry drift guard test (name + category) covering all
BUILTIN_TOOL_CATALOG entries, enabled via
--experimental-test-module-mocks to mock Electron runtime deps.
Document the general-over-specific assertion rule in AGENTS.md.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/run-tests.mjs

@@ -61,7 +61,7 @@ export function collectDefaultTestFiles(rootDir = process.cwd()) {
 }
 
 export function buildNodeTestArgs(testArgs) {
-  return ['--import', 'tsx', '--test', ...testArgs]
+  return ['--experimental-test-module-mocks', '--import', 'tsx', '--test', ...testArgs]
 }
 
 function run() {

scripts/run-tests.test.mjs

@@ -23,6 +23,7 @@ test('default test collection excludes e2e, smoke, and real external tests', ()
 
 test('explicit test arguments are passed through without default exclusions', () => {
   assert.deepEqual(buildNodeTestArgs(['tests/e2e/helpers/app-launcher.test.js']), [
+    '--experimental-test-module-mocks',
     '--import',
     'tsx',
     '--test',