feat(executor): implement Gemini-based task classification and load balancing

- Add Classifier using gemini-2.0-flash-lite to automatically select agent/model.
- Update Pool to track per-agent active tasks and rate limit status.
- Enable classification for all tasks (top-level and subtasks).
- Refine SystemStatus to be dynamic across all supported agents.
- Add unit tests for the classifier and updated pool logic.
- Minor UI improvements for project selection and 'Start Next' action.

2 files changed, 6 insertions, 0 deletions

diff --git a/internal/cli/run.go b/internal/cli/run.go
index 3624cea..62e1252 100644
--- a/internal/cli/run.go
+++ b/internal/cli/run.go
@@ -86,6 +86,9 @@ func runTasks(file string, parallel int, dryRun bool) error {
 		},
 	}
 	pool := executor.NewPool(parallel, runners, store, logger)
+	if cfg.GeminiBinaryPath != "" {
+		pool.Classifier = &executor.Classifier{GeminiBinaryPath: cfg.GeminiBinaryPath}
+	}
 
 	// Handle graceful shutdown.
 	ctx, cancel := context.WithCancel(context.Background())
diff --git a/internal/cli/serve.go b/internal/cli/serve.go
index 2ecb6cd..b679b38 100644
--- a/internal/cli/serve.go
+++ b/internal/cli/serve.go
@@ -71,6 +71,9 @@ func serve(addr string) error {
 	}
 	
 	pool := executor.NewPool(cfg.MaxConcurrent, runners, store, logger)
+	if cfg.GeminiBinaryPath != "" {
+		pool.Classifier = &executor.Classifier{GeminiBinaryPath: cfg.GeminiBinaryPath}
+	}
 
 	srv := api.NewServer(store, pool, logger, cfg.ClaudeBinaryPath, cfg.GeminiBinaryPath)
 	srv.StartHub()