feat(FN-3954): restore scoped mission interview persistence and resume

Scoped mission interview persistence is restored, enabling resume functionality within mission interview flows, with corresponding test coverage and documentation. The implementation touches MissionManager, mission-interview routing, and plugin view registration, with the bulk of changes in tests an

Fusion-Task-Id: FN-3954

packages/dashboard/src/__tests__/mission-e2e.test.ts

@@ -2752,6 +2752,7 @@ describe("Mission API", () => {
         { "mission-interview-system": "Scoped mission interview prompt" },
         undefined,
         undefined,
+        projectId,
       );
     });
 
@@ -2839,6 +2840,7 @@ describe("Mission API", () => {
         {},
         undefined,
         undefined,
+        null,
       );
     });
 
@@ -2914,6 +2916,7 @@ describe("Mission API", () => {
         {},
         "zai",
         "glm-5.1",
+        projectId,
       );
     });
 
@@ -2954,6 +2957,7 @@ describe("Mission API", () => {
         {},
         "anthropic",
         "claude-sonnet-4-5",
+        projectId,
       );
     });
 
@@ -2997,6 +3001,7 @@ describe("Mission API", () => {
         {},
         "openai",
         "gpt-4o",
+        projectId,
       );
     });
 
@@ -3033,6 +3038,7 @@ describe("Mission API", () => {
         {},
         undefined,
         undefined,
+        projectId,
       );
     });
   });