feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.

statusline/statusline-command.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+#
+# @file statusline-command.sh — wrapper that Claude Code invokes for its custom statusline;
+# pipes the JSON event payload into statusline.py (update the path to match your install).
+# @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+#
+PYTHONUTF8=1 python3 "C:/Users/nguyens6/.claude/statusline.py"
+# IMPORTANT:
+# Put the statusline.py file in the .claude folder in your user directory (e.g. C:/Users/nguyens6/.claude/statusline.py) and make sure to update the path in the above command if you place it somewhere else.
+# Change the above path to the location of your statusline.py file. You can also change the command to run a different script if you want to display something else in your status line.