docs: define secret store and auth profile plan

TASKS.md

@@ -2,19 +2,24 @@
 
 ## Current
 
-### `feat/public-smoke-configs`
+### `feat/secrets-auth-plan`
 
 Status: completed
 
 DoD:
-- Public REST, GraphQL, and gRPC smoke targets are documented
-- Repository contains ready-to-use operation payloads for MCP verification
-- gRPC smoke config includes a runtime-ready descriptor set
+- Docs describe the target secret store and auth profile model
+- Backend, runtime, and UI gaps are captured as vertical slices
+- TASKS and implementation plan reflect the new sequence
 
 ## Next
 
-- `feat/manual-regression-pass`
+- `feat/secret-store-foundation`
 
 ## Backlog
 
+- `feat/secret-store-foundation`
+- `feat/auth-profile-secret-resolution`
+- `feat/runtime-upstream-auth`
+- `feat/secrets-ui`
+- `feat/wizard-auth-selector`
 - `feat/manual-regression-pass`