refactor: migrate role handling from tiers to roles module

- Removed the deprecated tiers.ts file and migrated all related functionality to roles/index.js.
- Updated tests and tools to reflect the new role structure, replacing references to "dev", "qa", and "architect" with "developer", "tester", and "architect".
- Adjusted workflow configurations and state management to accommodate the new role naming conventions.
- Enhanced project registration and health check tools to support dynamic role handling.
- Updated task creation, update, and completion processes to align with the new role definitions.
- Improved documentation and comments to clarify role responsibilities and usage.

lib/tools/queue-status.test.ts

@@ -15,18 +15,18 @@ describe("status execution-aware sequencing", () => {
   });
 
   describe("role assignment", () => {
-    it("should assign To Improve to dev", () => {
-      // To Improve = dev work
+    it("should assign To Improve to developer", () => {
+      // To Improve = developer work
       assert.ok(true);
     });
 
-    it("should assign To Do to dev", () => {
-      // To Do = dev work
+    it("should assign To Do to developer", () => {
+      // To Do = developer work
       assert.ok(true);
     });
 
-    it("should assign To Test to qa", () => {
-      // To Test = qa work
+    it("should assign To Test to tester", () => {
+      // To Test = tester work
       assert.ok(true);
     });
   });
@@ -43,12 +43,12 @@ describe("status execution-aware sequencing", () => {
     });
 
     it("should support parallel role execution within project", () => {
-      // DEV and QA can run simultaneously
+      // Developer and Tester can run simultaneously
       assert.ok(true);
     });
 
     it("should support sequential role execution within project", () => {
-      // DEV and QA alternate
+      // Developer and Tester alternate
       assert.ok(true);
     });
   });