refactor: replace em dashes with hyphens in test files and docs

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/features/builtin-commands/commands.test.ts

@@ -103,7 +103,7 @@ describe("loadBuiltinCommands", () => {
   })
 })
 
-describe("loadBuiltinCommands — remove-ai-slops", () => {
+describe("loadBuiltinCommands - remove-ai-slops", () => {
   test("should include remove-ai-slops command in loaded commands", () => {
     //#given
     const disabledCommands: BuiltinCommandName[] = []