plakar-incus-integration: record Route B upstreaming decision

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

ks4/plakar-incus-integration.md

@@ -84,6 +84,20 @@ never opt-in.
 - Restore path (exporter): create instance from stored config → push
   file tree back via sftp. Weaker than `incus import` but granular.
 
+## Upstreaming (decided 2026-08-23: Route B — community integration)
+
+Repo: `github.com/jlutran/plakar-integration-incus` (remote set,
+initial commit done). Path to publication, in order:
+
+1. unit tests + first real run against ks4's `backup` project
+2. open a PlakarKorp/plakar issue proposing the integration
+   (disclose the Apache-2.0 `lxc/incus` client dependency)
+3. push the repo, then PR a recipe against `PlakarKorp/hub` →
+   installable as `plakar pkg add incus`
+4. (optional, later) adoption into the `integrations` monorepo:
+   module rename to `github.com/PlakarKorp/integrations/incus`,
+   orphan `integration/incus` branch, `incus/incus` layout
+
 ## Packaging & deployment
 
 Plugins are standalone executables (gRPC over stdio) — no rebuild of