feat: add plugin v1 system

Add manifest-driven plugin actions, event hooks, pane entrypoints, link handlers, and host APIs.

Support plugin link, GitHub install, build commands, installed plugin registry, pane movement, runtime context, and plugin docs.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/events.rs b/src/events.rs
index 07660c71..6185b8a7 100644
--- a/src/events.rs
+++ b/src/events.rs
@@ -111,6 +111,15 @@ pub enum AppEvent {
         results: Vec<WorkspaceGitStatus>,
         cache_updates: Vec<(std::path::PathBuf, GitStatusCacheEntry)>,
     },
+    /// A plugin action or event command finished.
+    PluginCommandFinished {
+        log_id: String,
+        finished_unix_ms: u64,
+        exit_code: Option<i32>,
+        stdout: String,
+        stderr: String,
+        error: Option<String>,
+    },
     /// Background `git worktree add` completed.
     WorktreeAddFinished(WorktreeAddResult),
     /// Background `git worktree remove` completed.