fix: remove the em-dashes this release added (release review)

105 new em-dashes sat in comments, test names and one test fixture from the
foreign tmux adoption work. Replaced by hand with commas, colons or
parentheses, one reading at a time. The fixture now quotes the real refusal
text, which says "It may still be running, try again."

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/mocks/mock-route-context.ts

@@ -158,7 +158,7 @@ export function createMockRouteContext(options?: {
       killSession: vi.fn(),
       listSessions: vi.fn(() => []),
       // A DIFFERENT method from listSessions, and the adoption routes call this
-      // one. Missing it is not a type error — the handler throws and the route
+      // one. Missing it is not a type error: the handler throws and the route
       // answers 500, which reads as a broken endpoint rather than a broken mock.
       getSessions: vi.fn(() => []),
       getStats: vi.fn(() => ({})),

test/mocks/mock-session.ts

@@ -28,7 +28,7 @@ export class MockSession extends EventEmitter {
    */
   remote?: SessionRemote;
   /**
-   * Mirrors `Session.isAdopted` — true when this session wraps a process SOMEONE
+   * Mirrors `Session.isAdopted`: true when this session wraps a process SOMEONE
    * ELSE started (a hand-opened tmux session Codeman attached to). A plain field
    * rather than a getter over `adopt`, because the routes only ever read the
    * boolean and the tests only ever need to set it.