feat(run): wire Workspace to TerminalView, delete the stream-json Run feature

Combines three tasks that couldn't land as separate commits: the
pre-commit hook's full test run crashes on any intermediate state
where Workspace.tsx still imports the files being deleted, so the
deletion (old RunConsole/useRunStream/run-spawner/stream-json-parser),
the RunSetup/RunHistory type adjustments, and this file's own
TerminalView wiring had to be staged together and committed as one
hook-passable unit.

- Delete RunConsole.tsx, useRunStream.ts, server/lib/run-spawner.js,
  server/lib/stream-json-parser.js and their tests (Task 8).
- Adjust RunSetup.tsx/RunHistory.tsx to the tmux-backed RunHandle/
  RunStartArgs/DashboardRunHistoryItem shapes, remove mode selection
  UI (Task 9).
- Swap Workspace.tsx's chat-bubble run console for TerminalView
  (xterm.js over /ws-pty/:runId), drop the stream-json envelope
  plumbing, update Start/Resume to the new RunStartArgs payload.
  Create onStartFromSetup handler to work with RunSetup's new callback
  shape. Remove mode state and related plumbing. Remove send/followUp
  state (no longer using old RunConsole chat interface).
- Add promptPlaceholderTerminal i18n key to support RunSetup's new
  placeholder text (Task 10).
- Update Workspace.test.tsx to mock TerminalView component.
- Regenerate screens.snapshot.test.tsx snapshot (only Workspace run
  panel changes: terminal container instead of chat bubbles).

client/src/components/run/RunHistory.tsx

@@ -33,8 +33,27 @@ import {
   RotateCcw,
   Eye,
 } from "lucide-react";
-import type { DashboardRunHistoryItem, RunListResponse, RunMode, RunStatus } from "../../lib/api";
-import { ModeBadge, StatusPill } from "./RunConsole";
+import type { DashboardRunHistoryItem, RunListResponse, RunStatus } from "../../lib/api";
+
+// Minimal StatusPill component (from deleted RunConsole)
+function StatusPill({
+  status,
+}: {
+  status: RunStatus | "completed" | "error" | "killed" | "abandoned";
+}) {
+  const colors: Record<string, string> = {
+    running: "bg-status-success/10 text-status-success border-status-success/30",
+    gone: "bg-surface-3 text-fg-secondary border-border",
+    completed: "bg-sky-500/10 text-sky-300 border-sky-500/30",
+    error: "bg-status-danger/10 text-status-danger border-status-danger/30",
+    killed: "bg-surface-3 text-fg-secondary border-border",
+    abandoned: "bg-surface-3 text-fg-secondary border-border",
+  };
+  const color = colors[status] || colors.abandoned;
+  return (
+    <span className={`text-[10px] font-mono px-1.5 py-0.5 rounded border ${color}`}>{status}</span>
+  );
+}
 
 type RunStatusFilter =
   | "all"
@@ -44,15 +63,13 @@ type RunStatusFilter =
   | "error"
   | "killed"
   | "abandoned";
-type RunModeFilter = "all" | "conversation" | "headless";
 
 export interface UnifiedRunRow {
   id: string;
   sessionId: string | null;
-  mode: RunMode;
   cwd: string;
   model: string | null;
-  status: RunStatus;
+  status: RunStatus | "completed" | "error" | "killed" | "abandoned";
   promptPreview: string;
   startedAt: number;
   endedAt: number | null;
@@ -105,14 +122,13 @@ export function ActiveRunsSwitcher({
         out.push({
           id: r.id,
           sessionId: r.sessionId,
-          mode: r.mode,
-          cwd: r.cwd,
+          cwd: r.cwd || "",
           model: r.model,
           status: r.status,
-          promptPreview: r.prompt || "",
-          startedAt: r.startedAt,
-          endedAt: r.endedAt,
-          isLive: r.status === "running" || r.status === "spawning",
+          promptPreview: "",
+          startedAt: r.startedAt ? new Date(r.startedAt).getTime() : 0,
+          endedAt: null,
+          isLive: r.status === "running",
         });
       }
     }
@@ -124,7 +140,6 @@ export function ActiveRunsSwitcher({
       out.push({
         id: h.id,
         sessionId: h.session_id,
-        mode: h.mode,
         cwd: h.cwd,
         model: h.model,
         status: h.status,
@@ -138,7 +153,7 @@ export function ActiveRunsSwitcher({
     return out;
   }, [activeRuns, runHistory]);
 
-  const liveCount = activeRuns?.activeCount ?? 0;
+  const liveCount = rows.filter((r) => r.isLive).length;
   const totalCount = rows.length;
 
   return (
@@ -211,7 +226,6 @@ export function RunsModal({
 }) {
   const { t } = useTranslation("run");
   const [statusFilter, setStatusFilter] = useState<RunStatusFilter>("all");
-  const [modeFilter, setModeFilter] = useState<RunModeFilter>("all");
   const [search, setSearch] = useState("");
 
   // Snappy refresh while the modal is the foreground UI: pull immediately
@@ -227,25 +241,22 @@ export function RunsModal({
 
   const counts = useMemo(() => {
     const byStatus: Record<string, number> = { all: rows.length };
-    const byMode: Record<string, number> = { all: rows.length };
     for (const r of rows) {
       byStatus[r.status] = (byStatus[r.status] || 0) + 1;
-      byMode[r.mode] = (byMode[r.mode] || 0) + 1;
     }
-    return { byStatus, byMode };
+    return { byStatus };
   }, [rows]);
 
   const filtered = useMemo(() => {
     const q = search.trim().toLowerCase();
     return rows.filter((r) => {
       if (statusFilter !== "all" && r.status !== statusFilter) return false;
-      if (modeFilter !== "all" && r.mode !== modeFilter) return false;
       if (!q) return true;
       const hay =
         r.promptPreview + "\n" + r.cwd + "\n" + (r.sessionId || "") + "\n" + (r.model || "");
       return hay.toLowerCase().includes(q);
     });
-  }, [rows, statusFilter, modeFilter, search]);
+  }, [rows, statusFilter, search]);
 
   const historyById = useMemo(() => {
     const m = new Map<string, DashboardRunHistoryItem>();
@@ -261,7 +272,6 @@ export function RunsModal({
     "killed",
     "abandoned",
   ];
-  const MODES: RunModeFilter[] = ["all", "conversation", "headless"];
 
   return (
     <div
@@ -343,16 +353,6 @@ export function RunsModal({
               }))}
               onChange={(v) => setStatusFilter(v as RunStatusFilter)}
             />
-            <FilterChipGroup
-              label={t("runs.filterMode", "Mode")}
-              value={modeFilter}
-              options={MODES.map((m) => ({
-                value: m,
-                label: m === "all" ? t("runs.allLabel", "All") : t(`mode.${m}`),
-                count: counts.byMode[m] || 0,
-              }))}
-              onChange={(v) => setModeFilter(v as RunModeFilter)}
-            />
           </div>
         </div>
 
@@ -467,10 +467,9 @@ function UnifiedRunRowView({
         hour: "2-digit",
         minute: "2-digit",
       });
-  const canResume = row.mode === "conversation" && !!row.sessionId && !row.isLive;
-  // Headless runs are single-shot, so resume doesn't apply - but the captured
-  // transcript is still worth viewing. Link to the Session detail page.
-  const canView = row.mode === "headless" && !!row.sessionId && !row.isLive;
+  // Without mode distinction, offer resume for any finished run with a session
+  const canResume = !!row.sessionId && !row.isLive;
+  const canView = !!row.sessionId && !row.isLive;
   return (
     <div
       className={`px-5 py-3 transition-colors ${
@@ -479,7 +478,6 @@ function UnifiedRunRowView({
     >
       <div className="flex items-center gap-2 mb-1.5 flex-wrap">
         <StatusPill status={row.status} />
-        <ModeBadge mode={row.mode} />
         {row.isLive && (
           <span className="text-[10px] font-semibold text-status-success bg-status-success/10 border border-status-success/25 px-1.5 py-0.5 rounded-full inline-flex items-center gap-1">
             <span className="w-1.5 h-1.5 rounded-full bg-status-success animate-pulse" />