fix: sql guard gaps, date tz, timeouts, payload

test/unit/config/registry.test.ts

@@ -89,6 +89,35 @@ describe('registry', () => {
         expect(() => registry.update('u', { host: '' })).toThrow()
     })
 
+    it('drops the inherited port when switching engine without a new port', () => {
+        writeStore(storePath, [conn('switch', { type: 'postgres', port: 5432 })])
+        const registry = createRegistry({ storePath, env: {} })
+        const updated = registry.update('switch', { type: 'mysql' })
+        expect(updated.config.type).toBe('mysql')
+        expect(updated.config.port).toBeUndefined()
+    })
+
+    it('keeps an explicit port when switching engine', () => {
+        writeStore(storePath, [conn('switch', { type: 'postgres', port: 5432 })])
+        const registry = createRegistry({ storePath, env: {} })
+        const updated = registry.update('switch', { type: 'mysql', port: 3307 })
+        expect(updated.config.port).toBe(3307)
+    })
+
+    it('clears the port when switching engine with an explicit null', () => {
+        writeStore(storePath, [conn('switch', { type: 'postgres', port: 5432 })])
+        const registry = createRegistry({ storePath, env: {} })
+        const updated = registry.update('switch', { type: 'mysql', port: null })
+        expect(updated.config.port).toBeUndefined()
+    })
+
+    it('keeps the port when type is unchanged', () => {
+        writeStore(storePath, [conn('same', { type: 'postgres', port: 5432 })])
+        const registry = createRegistry({ storePath, env: {} })
+        const updated = registry.update('same', { readonly: true })
+        expect(updated.config.port).toBe(5432)
+    })
+
     it('update can rename unless the new name is taken', () => {
         writeStore(storePath, [conn('old-name'), conn('taken')])
         const registry = createRegistry({ storePath, env: {} })