feat(plugins): composer items and controls in all three composers

A plugin registers a component with addComposerItem and reads and changes the
composer through useComposer(): provider, model, mode, thinking, options,
prompt, attachments and agent metadata. The agent, draft and New workspace
composers provide the same ComposerInput and ComposerAgent halves, so a
command reaches the right model without the plugin knowing which composer
it sits in.

Toggle, Select and Action are drawn by one ComposerControl renderer that
the thinking select and provider option controls now use too. Controls sit in
the toolbar when there is room and become rows in the existing overflow sheet
otherwise, so on a phone they appear in the overflow. Plugin items count in
the density presence so the composer condenses to make room. Model and mode
stay specialized but share the trigger, density and overflow.

Draft metadata is kept locally, sent at creation and reset when the prompt is
sent. PluginAgentSnapshot.metadata, deferred from the metadata phase, lands
here. The unused provider badge is removed.

vitest resolves @floating-ui/react-native to its ESM build: the CJS entry
requires the real react-native, whose Flow sources do not parse.
This commit is contained in:
Mohamed Boudra
2026-11-02 05:36:04 +01:00
parent 77f90d3460
commit abd4d2c1ea
57 changed files with 2029 additions and 783 deletions
+19
View File
@@ -644,6 +644,25 @@ Mounted surfaces and command invocations have shorter API lifetimes.
Keep the client entry synchronous: return its cleanup function immediately and start asynchronous
work inside it. See the maintained [composer pill example](../plugin-examples/local-plugin/client/main.tsx).
## Contribute composer items
`addComposerItem` mounts a plugin component in the agent, draft and New workspace composers. The
public contract is the [composer items reference](../public-docs/plugins/reference.md#composer-items).
The composer is two contexts, provided by two owners (`packages/app/src/composer/session.tsx`).
`Composer` provides `ComposerInput` (prompt and attachments). `AgentControls` and
`DraftAgentControls` provide `ComposerAgent` (provider, model, mode, thinking, options, metadata and
their commands). `toPluginComposer` (`packages/app/src/plugins/composer-items/`) joins them into the
`PluginComposer` an item reads, so a plugin cannot tell which composer a command reaches. Add a
capability to `ComposerAgent` and both implementations; never branch on `context` in the model.
Plugin `Toggle`, `Select` and `Action`, the thinking select and provider option controls all
render through `ComposerControl` (`packages/app/src/composer/agent-controls/composer-control.tsx`),
a toolbar icon or a row in the overflow sheet. Model and mode stay specialized but share its trigger,
density and overflow. Plugin items count in the density presence in `layout.ts`, so a composer
condenses to make room for them. A custom component renders wherever its item is placed, and an
item that renders nothing still counts for density; there is no registration for either.
## Contribute timeline items
Timeline transformers and renderers are client contributions. The daemon's canonical rows and