cleanup: e2e suite should consume golden-source manifests, not local copies

[entlein]

Consolidation, not features. The e2e suite should consume golden-source manifests from their owning repos, never carry local copies. Base: #68.

To reconcile in src/e2e_test/adaptive_export_loadtest/

• k8s/00-sinks.yaml, k8s/gen-pod.tmpl.yaml — confirm these are test-fixtures unique to the suite, not duplicates of soc/bob manifests. If they overlap soc (sinks) they should reference the golden source.
• The new skaffold.yaml (module e2e-nonpixie) already pulls the stack from e2e testing base: SOC stack Skaffold + node-local dx delivery (k3s) soc#231 and the apps from java-poc golden source: medical-named, digest-pinned test apps + SBoBs bob#152 via git — verify no manifest is embedded that duplicates those.
• Boundary clarification: which repo owns the AE / vizier deploy the overlay assumes? Document the split: pixie native Skaffold = pl (vizier + adaptive_export); soc = honey + clickhouse; bob = the apps.

One source of truth per component; the suite references, never copies. Refs soc#231, bob#152.