fix(tui): separate rigs in the instance table (#2327)

The rig tui instance table drew a dotted rule between pods inside a rig but nothing between rigs, so one rig's last pod shared a block with the next rig's first pod, and trailing single-pod rigs ran together. Each rig boundary now gets a solid rule, and pods inside a rig keep the dotted rule. Source +4, tests +2.

packages/tui/src/render.ts

@@ -709,6 +709,7 @@ function noRigsText(snap: FleetSnapshot, host: FleetSnapshot["hosts"][number], l
     : `  (no rigs served by ${host.name})`;
 }
 
+/** Rig boundaries take a solid rule and pod boundaries a dotted one; RIG repeats on every row so scrolled rows keep it. */
 function instanceContentLines(
   state: ViewState,
   snap: FleetSnapshot,
@@ -808,10 +809,13 @@ function instanceContentLines(
   let attentionCount = 0;
   let attentionUnknown = 0;
   let openCount = 0;
+  let firstRig = true;
   for (const rig of host.rigs) {
     const agents = rig.pods.flatMap((pod) => pod.agents.map((agent) => ({ pod: pod.name, agent })))
       .filter(({ pod, agent }) => !state.filter || rig.name.includes(state.filter) || pod.includes(state.filter) || agent.name.includes(state.filter));
     if (state.filter && agents.length === 0 && !rig.name.includes(state.filter)) continue;
+    if (!firstRig) lines.push({ text: "─".repeat(columnsWidth(columns)) });
+    firstRig = false;
     const rigAction: Action = { type: "drill", resource: "rig", name: rig.name, target: { host: host.name } };
     if (agents.length === 0) {
       lines.push({

packages/tui/test/instance-mission-control.test.ts

@@ -140,6 +140,8 @@ describe("S12 instance mission control", () => {
     expect(whole).toMatch(/empty\s+—\s+\(no seats\).*stopped/);
     expect(whole).toMatch(/dev\s+[\s\S]*┈{8,}[\s\S]*qa\s+/);
     expect((whole.match(/┈{8,}/g) ?? [])).toHaveLength(1);
+    expect(whole).toMatch(/build\s+qa\s+[^\n]*\n[^\n]*─{8,}[^\n]*\n[^\n]*docs\s+write/);
+    expect(whole).toMatch(/docs\s+write\s+[^\n]*\n[^\n]*─{8,}[^\n]*\n[^\n]*empty\s+—/);
     expect(whole).not.toMatch(/\+\d+|more hidden/i);
     expect(reached).toEqual(expectedAgents);
     expect(scrolledSeatRows).toBeGreaterThan(0);