docs(agent): update logging design with 2-line status UI

1 files changed, 6 insertions, 1 deletions

diff --git a/Omni/Agent/DESIGN.md b/Omni/Agent/DESIGN.md
index bbdbe15..eb30ecb 100644
--- a/Omni/Agent/DESIGN.md
+++ b/Omni/Agent/DESIGN.md
@@ -73,7 +73,12 @@ The Haskell implementation should replicate the logic of `start-worker.sh` but w
 ### 4.3 Logging
 - Continue writing raw Amp logs to `_/llm/amp.log` in the worker directory.
 - `agent log` reads this file and applies the filtering logic (currently in `monitor-worker.sh` jq script) using Haskell (Aeson).
-- **Requirement:** Output must include timestamps for every event. Extract the `timestamp` field from the JSON log and format it (e.g., `[HH:MM:ss] 🤖 THOUGHT: ...`).
+- **UI Design**:
+    - **Two-line Status**: The CLI should maintain two reserved lines at the bottom (or top) of the output for each worker:
+        - **Line 1 (Meta)**: `[Worker: omni-worker-1] Task: t-123 | Files: 3 | Credits: $0.45 | Time: 05:23`
+        - **Line 2 (Activity)**: `[14:05:22] 🤖 Thinking...` (updates in place)
+    - **Completion**: When a task finishes, print a summary line (e.g., `[✓] Task t-123 completed in 12m 30s`) and a hard line break before starting the next loop.
+    - **History**: Previous log lines (tool outputs, thoughts) scroll up above these two status lines.
 
 ### 4.4 Harvesting
 - Iterate over `.tasks/workers/` or `git worktree list`.