cmux-sidebar-agents: agent monitor sidebar plugin for cmux

Live view of reported agents (status glyph, breadcrumb, age; attention-first
sort) and unread notifications from the session tree; Enter jumps to the
agent's workspace/screen/pane. Poll-based (2s). Judge-reviewed; selection
now tracks stable row identity across re-sorts (surface/notification id),
so the highlighted row never silently changes between keypress and Enter.

Author: lawrencecchen

.github/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo fmt --check
+      - run: cargo clippy --all-targets -- -D warnings
+      - run: cargo test
+      - run: cargo build --release

.gitignore

@@ -0,0 +1 @@
+/target/