Add demo_plugin and plugin host integration tests

Minimal in-tree add-on (DP_HELLO) validates registry, ribbon merge, and try_dispatch. Five new lib tests; EntryKind gains PartialEq for test helpers.
This commit is contained in:
Michael Flynn 2026-06-09 13:52:15 -04:00
commit 82993bc1db
12 changed files with 214 additions and 2 deletions

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@ -51,7 +51,7 @@ cargo build
cargo test --lib
```
No domain plugin is registered in this branch; existing core tests should pass unchanged.
A minimal **`demo_plugin`** add-on registers at compile time for smoke tests (`DP_HELLO` command, Demo Plugin ribbon tab). Remove or gate it before release if maintainers prefer zero in-tree add-ons.
## Review questions