* Add plugin primitive base classes and events

* Refine plugin primitive follow-up comments and tests

* Add plugin registry and package exports

* Tighten plugin registry log assertions

* Wire plugin registry into API lifespan

* Strengthen plugin lifespan integration tests

* Emit plugin events from service layer

* Harden plugin dispatch adapter

* drop orchestration_type as a persistent data type

* address nit comments

* change event naming scheme to be imperative with 'Post' prefix

* Feat/discord plugin (#23)

* Add Discord plugin scaffold

* Tidy Discord plugin scaffold artifacts

* Add Discord plugin lifecycle config

* Broaden development report ignore pattern

* Complete Discord plugin webhook forwarding

* gitignore

* remove mention of design in readme

* improve example plugin documentation

* refactor: remove redundant guard in send_terminal_input endpoint

send_input already checks for None sender_id/orchestration_type/registry
before dispatching the plugin event, so the caller-side branch just
duplicated that logic. Pass the arguments through unconditionally to
match the pattern used by the other plugin-aware endpoints.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add cao-plugin skill with hard requirements and hook event reference

Codifies the plugin authoring contract (CaoPlugin subclass, @hook decorator,
cao.plugins entry point, build/install) and catalogs the currently supported
lifecycle and messaging events so future plugin work has a single reference.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add plugins guide and note example scope

Adds docs/plugins.md covering plugin installation, available events,
troubleshooting, and future improvements. Points plugin authors to the
cao-plugin skill for the full authoring guide.

Also annotates the cao-discord example README to clarify it is a
reference implementation, not an actively maintained plugin.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs(plugins): add plugin onboarding docs and close review gaps

Address PR awslabs#172 review feedback: add examples/plugins/README.md index,
add ## Plugins section to root README, add quick-start walkthrough to
docs/plugins.md, and clean up duplicate install command in the Discord
example README.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs(plugins): delegate Quick Start setup steps to root README

Replace inline install/launch commands with links to README § Installation
and § Quick Start so plugin docs don't drift from the canonical setup path
(and so prerequisites like tmux/Python versions stay discoverable).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: haofeif <56006724+haofeif@users.noreply.github.com>