fix: correct color keys to match Todoist backend (turquoise→teal, gray→grey)

The SDK defined color keys 'turquoise' and 'gray' which don't exist in the
backend — the Sync and REST APIs expect 'teal' and 'grey' respectively.
Sending the old keys results in INVALID_COLOR errors. Deprecated aliases
are preserved for backward compatibility of JS imports.

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

Author: scottlovegrove

src/utils/colors.ts

@@ -64,11 +64,11 @@ export const mintGreen = {
     hexValue: '#6accbc',
     value: '#6accbc',
 } as const
-export const turquoise = {
+export const teal = {
     id: 38,
-    key: 'turquoise',
-    displayName: 'Turquoise',
-    name: 'Turquoise',
+    key: 'teal',
+    displayName: 'Teal',
+    name: 'Teal',
     hexValue: '#158fad',
     value: '#158fad',
 } as const
@@ -144,11 +144,11 @@ export const charcoal = {
     hexValue: '#808080',
     value: '#808080',
 } as const
-export const gray = {
+export const grey = {
     id: 48,
-    key: 'gray',
-    displayName: 'Gray',
-    name: 'Gray',
+    key: 'grey',
+    displayName: 'Grey',
+    name: 'Grey',
     hexValue: '#b8b8b8',
     value: '#b8b8b8',
 } as const
@@ -170,7 +170,7 @@ export const colors = [
     limeGreen,
     green,
     mintGreen,
-    turquoise,
+    teal,
     skyBlue,
     lightBlue,
     blue,
@@ -180,10 +180,16 @@ export const colors = [
     magenta,
     salmon,
     charcoal,
-    gray,
+    grey,
     taupe,
 ] as const
 
+/** @deprecated Use {@link teal} instead. Will be removed in the next major version. */
+export const turquoise = teal
+
+/** @deprecated Use {@link grey} instead. Will be removed in the next major version. */
+export const gray = grey
+
 export type ColorKey = (typeof colors)[number]['key']
 
 export const defaultColor: Color = charcoal