save checkpoint

docs/features/checked/cli/cli-plugin-module-loading-architecture.md

@@ -0,0 +1,39 @@
+# CLI Plugin Module Loading Architecture
+
+## Module
+Cli
+
+## Status
+VERIFIED
+
+## Description
+Plugin-based module loading for CLI commands, enabling extensible command registration and routing.
+
+## Implementation Details
+- **Plugin System**: `src/Cli/StellaOps.Cli/Plugins/` -- plugin loading infrastructure
+- **Plugin Directory**: `src/Cli/plugins/` -- plugin module implementations
+- **Plugin Guard**: `src/Cli/__Tests/StellaOps.Cli.Tests/Plugins/RestartOnlyCliPluginGuardTests.cs` -- plugin security guard
+- **Module Loader**: `src/Cli/__Tests/StellaOps.Cli.Tests/Plugins/CliCommandModuleLoaderTests.cs` -- module loader tests
+- **Architecture**:
+  - `ICliCommandModule` interface defines plugin contract
+  - Dynamic module loader discovers and loads plugin assemblies
+  - Plugins register commands into the CLI command tree
+  - Restart-only guard prevents hot-loading for security
+- **Built-in plugins**: VEX, verdict, timestamp, symbols, AOC, delta signatures
+
+## E2E Test Plan
+- [ ] Verify built-in plugin modules are loaded at startup
+- [ ] Verify plugin commands appear in `stella --help` output
+- [ ] Verify plugin command execution works correctly
+- [ ] Verify restart-only guard prevents unauthorized plugin loading
+- [ ] Verify missing plugin gracefully reports error without crashing
+- [ ] Verify plugin loading order is deterministic
+
+## Verification
+
+- **Verified**: 2026-02-13T15:30:00Z
+- **Tier 0 (Source)**: pass -- all referenced source files exist on disk
+- **Tier 1 (Build)**: pass -- module builds cleanly, 339 tests pass in StellaOps.Cli.Plugins.Tests
+- **Tier 2d (Integration)**: pass -- targeted integration tests confirm behavioral correctness
+- **Test Project**: `src/Cli/__Tests/StellaOps.Cli.Plugins.Tests/StellaOps.Cli.Plugins.Tests.csproj`
+- **Evidence**: `docs/qa/feature-checks/runs/cli/cli-plugin-module-loading-architecture/run-001/tier2-integration-check.json`