Cross-CF org/space filter: dedupe by name when CF=All on Applications, Services, Marketplace walls

Narrowed scope of #2629.

Today

Primary walls (Applications, Services, Marketplace) aggregate apps / instances / offerings across all connected CFs. CF / Org / Space dropdowns exist on each wall. When CF = "All", the Org dropdown aggregates orgs across CFs but dedupes by guid — seen.set(o.guid, o.name) at src/frontend/packages/cloud-foundry/src/shared/components/list/list-types/app/cf-apps-signal-config.service.ts:233 (and equivalents in services / marketplace configs). The predicate matches by guid: if (org && app.orgGuid !== org) return false; at :314.

Result: an org named platform in prod and another named platform in staging appear as two indistinguishable-looking entries in the Org dropdown. Picking one filters to that single CF's org.

What to change

When selectedCnsi === null:

1. orgOptions and spaceOptions dedupe by name rather than guid (seen.set(o.name, o.name)); option value becomes the name.
2. Filter predicate matches by name in that mode: app.orgName !== org and app.spaceName !== space instead of guid-equality.
3. When selectedCnsi !== null, behavior unchanged — pick a CF, see its orgs, filter by guid.

Apply to

• cf-apps-signal-config.service.ts (Applications wall)
• cf-service-instances-signal-config.service.ts (Services wall)
• cf-service-offerings-signal-config.service.ts (Marketplace)

Plus tests covering: All-CF dedupe collapses identical names, single-CF mode unchanged, locked-space-scope unaffected.

Edge cases

• Case sensitivity — pick a stance (platform vs Platform). Recommend case-insensitive match for permissive behavior.
• Naming convention divergence — platform-prod vs platform won't unify; out of scope for this ticket. Document that this fix unifies exact (or normalized) name matches; naming guidance is separate.
• Whitespace / unicode normalization — match-by-name is fragile to invisible characters; consider a normalized comparison (trim() + normalize('NFC') at minimum).

Scope

Three frontend signal-config services + tests. Half-day estimate.

Start with the existing orgOptions, spaceOptions, and filter predicates in cf-apps-signal-config.service.ts, then compare the equivalent logic in cf-service-instances-signal-config.service.ts and cf-service-offerings-signal-config.service.ts. Run the existing tests for these signal-config services and add coverage for identical-name deduplication in All-CF mode, unchanged single-CF behavior, and locked-space scope. Done means the three walls behave consistently while single-CF filtering remains guid-based.