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.

server/__tests__/transcript-path-sweep.test.js

@@ -0,0 +1,33 @@
+/**
+ * @file Verifies the sweep queries used in server/index.js have been migrated
+ * from json_extract(events.data,...) to sessions.transcript_path. Tests by
+ * checking the SQL strings that appear in the file rather than running the
+ * full setInterval — the unit-level guarantee is what matters here.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+const { describe, it } = require("node:test");
+const assert = require("node:assert/strict");
+const fs = require("fs");
+const path = require("path");
+
+const SRC = fs.readFileSync(path.join(__dirname, "..", "index.js"), "utf8");
+
+describe("server/index.js sweep queries", () => {
+  it("does NOT contain json_extract on events.data for transcript_path", () => {
+    const matches = SRC.match(/json_extract\([^)]*events?\.data[^)]*transcript_path/gi) || [];
+    assert.equal(
+      matches.length,
+      0,
+      `expected zero events.data json_extract for transcript_path; found:\n${matches.join("\n")}`
+    );
+  });
+
+  it("queries sessions.transcript_path for the active sweep", () => {
+    assert.match(
+      SRC,
+      /FROM sessions[^;]*WHERE[^;]*status\s*=\s*'active'[^;]*transcript_path/is,
+      "expected a SELECT from sessions with status='active' and transcript_path"
+    );
+  });
+});