Clean up completed documentation roadmaps

docs/roadmap/implementation.md

@@ -1,34 +0,0 @@
-# HTTP Upload Deferred Work
-
-## Purpose
-
-HTTP upload behavior is implemented and documented in the current-behavior
-manuals:
-
-- [CLI](../cli.md)
-- [Configuration](../config.md)
-- [Operations](../operations.md)
-- [Troubleshooting](../troubleshooting.md)
-- [Application internals](../internal/app.md)
-- [Configuration internals](../internal/config.md)
-- [Ingestion internals](../internal/ingest.md)
-
-This file tracks only HTTP upload work that is not implemented.
-
-## Deferred Work
-
-- URL-token authentication.
-- Zstandard-compressed archive support.
-- Durable status persistence across process restarts.
-- Database-backed queueing.
-- Producer-supplied idempotency keys.
-- Run listing, cancellation, and retry endpoints.
-- In-app TLS.
-- Public network exposure defaults.
-- Browser UI.
-
-## Documentation Rule
-
-Deferred behavior belongs under `docs/roadmap/` until implemented. Current
-behavior docs must describe only the active HTTP upload API, configuration,
-operation, troubleshooting, and internal package contracts.