Fix scan submit field mismatch, archive verified sprints, deep journey iteration 2

- Fix scan-submit.component.ts: Scanner API returns `scanId` (not `id`) and
  PascalCase status. Component now resolves `scanId ?? id` and normalizes
  status to lowercase. Scan progress tracking now works end-to-end.
- Archive 3 verified sprints (001 FTUX, 007 Journey fixes, 008 Identity envelope)
  after fresh wipe + rebuild + behavioral verification.
- Update Sprint 002 task statuses to reflect actual implementation (6/7 done).
- Create Sprint 020 for remaining journey quality fixes (J-02 user ID display,
  J-03 feed auto-check).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Web/StellaOps.Web/src/app/features/scanner/scan-submit.component.ts

@@ -21,12 +21,15 @@ interface MetadataEntry {
 }
 
 interface ScanSubmitResponse {
-  id: string;
+  id?: string;
+  scanId?: string;
   status: string;
+  location?: string;
 }
 
 interface ScanStatusResponse {
-  id: string;
+  id?: string;
+  scanId?: string;
   status: string;
   image?: string;
   startedAt?: string;
@@ -537,9 +540,12 @@ export class ScanSubmitComponent implements OnDestroy {
     ).subscribe({
       next: (response) => {
         this.submitting.set(false);
-        this.scanId.set(response.id);
-        this.scanStatus.set(response.status || 'queued');
-        this.startPolling(response.id);
+        const resolvedId = response.scanId ?? response.id ?? null;
+        this.scanId.set(resolvedId);
+        this.scanStatus.set(response.status?.toLowerCase() || 'queued');
+        if (resolvedId) {
+          this.startPolling(resolvedId);
+        }
       },
       error: (err) => {
         this.submitting.set(false);
@@ -571,10 +577,13 @@ export class ScanSubmitComponent implements OnDestroy {
         this.http.get<ScanStatusResponse>(`/api/v1/scans/${encodeURIComponent(scanId)}`)
       ),
       tap((response) => {
-        this.scanStatus.set(response.status);
+        this.scanStatus.set(response.status?.toLowerCase() || 'queued');
       }),
       takeWhile(
-        (response) => response.status !== 'completed' && response.status !== 'failed',
+        (response) => {
+          const s = response.status?.toLowerCase();
+          return s !== 'completed' && s !== 'failed';
+        },
         true,
       ),
       takeUntilDestroyed(this.destroyRef),