oidc: flip enforcement ON for knowledge + distribution (no-live-proof, fix-forward)

Operator 2026-06-04: nothing is production yet, flip OIDC + fix-forward (no
browser-proof gate). knowledge: Auth__Enabled false->true (OIDC env already
wired). distribution: add OIDC env block (Authority/Audience/ClientId=distribution,
ClientSecret from distribution-oidc-client) + Enabled=true; public read/entitlement
+ Method() allowlist stay open (OIDC gates admin only). Clients already provisioned
(secrets present). ArgoCD deploys both.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/fc-distribution/fc-distribution.yaml

@@ -130,6 +130,24 @@ spec:
               value: "Production"
             - name: DOTNET_SYSTEM_GLOBALIZATION_INVARIANT
               value: "false"
+            # Authentik/OIDC enforcement (flipped ON 2026-06-04, no-live-proof per operator;
+            # public read/entitlement + Method() allowlist stay open — OIDC gates admin only).
+            - name: FlowerCore__Auth__Enabled
+              value: "true"
+            - name: FlowerCore__Auth__Oidc__Enabled
+              value: "true"
+            - name: FlowerCore__Auth__Oidc__Authority
+              value: "https://id.iamworkin.lan/application/o/distribution/"
+            - name: FlowerCore__Auth__Oidc__Audience
+              value: "distribution"
+            - name: FlowerCore__Auth__Oidc__ClientId
+              value: "distribution"
+            - name: FlowerCore__Auth__Oidc__ClientSecret
+              valueFrom:
+                secretKeyRef:
+                  name: distribution-oidc-client
+                  key: client_secret
+                  optional: true
             # SQLite connection (catalog + data-protection keys via FlowerCoreDbContext).
             # Read by Data/DatabaseProviderExtensions.cs in precedence order; Sqlite key wins.
             - name: FlowerCore__Database__Provider