Fix Superset terminal layout and Git trust

apps/web/app/gen2/workspace.css

@@ -1098,7 +1098,10 @@
   --ss-muted: #2a2827;
   --ss-muted-foreground: #a8a5a3;
   --ss-border: #2a2827;
-  min-height: 100dvh;
+  display: flex;
+  flex-direction: column;
+  height: 100dvh;
+  min-height: 0;
   background: var(--ss-background);
   color: var(--ss-foreground);
   font-family: var(--font-geist-sans), Arial, sans-serif;
@@ -1203,12 +1206,20 @@
   font-size: 0.8125rem;
 }
 
+.gen2-superset-workspace-content {
+  flex: 1;
+  min-height: 0;
+}
+
 .gen2-superset-files-panel .gen2-superset-file-pane {
-  min-height: calc(100dvh - 48px);
+  height: 100%;
+  min-height: 0;
 }
 
 .gen2-superset-tool-panel {
-  min-height: calc(100dvh - 48px);
+  box-sizing: border-box;
+  height: 100%;
+  min-height: 0;
   padding: 16px;
   background: var(--ss-background);
 }

apps/web/components/gen2/superset-workspace-shell.tsx

@@ -341,42 +341,44 @@ export function SupersetWorkspaceShell({
           {notice}
         </p>
       ) : null}
-      <div
-        id="superset-panel-files"
-        role="tabpanel"
-        aria-labelledby="superset-tab-files"
-        hidden={tab !== "files"}
-        className="gen2-superset-files-panel"
-      >
-        <SupersetFilePane
-          key={worktreeId}
+      <div className="gen2-superset-workspace-content">
+        <div
+          id="superset-panel-files"
+          role="tabpanel"
+          aria-labelledby="superset-tab-files"
+          hidden={tab !== "files"}
+          className="gen2-superset-files-panel"
+        >
+          <SupersetFilePane
+            key={worktreeId}
+            workspaceId={workspaceId}
+            canEdit={canEdit}
+            worktreeId={worktreeId}
+            onDirtyChange={setDirty}
+          />
+        </div>
+        <SupersetChangesPane
           workspaceId={workspaceId}
-          canEdit={canEdit}
           worktreeId={worktreeId}
-          onDirtyChange={setDirty}
+          visible={tab === "changes"}
         />
+        <section
+          id="superset-panel-terminal"
+          role="tabpanel"
+          aria-labelledby="superset-tab-terminal"
+          hidden={tab !== "terminal"}
+          className="gen2-superset-tool-panel"
+        >
+          <Gen2TerminalPane
+            key={worktreeId}
+            workspaceId={workspaceId}
+            worktreeId={worktreeId}
+            visible={tab === "terminal"}
+            canStart
+            onExit={() => undefined}
+          />
+        </section>
       </div>
-      <SupersetChangesPane
-        workspaceId={workspaceId}
-        worktreeId={worktreeId}
-        visible={tab === "changes"}
-      />
-      <section
-        id="superset-panel-terminal"
-        role="tabpanel"
-        aria-labelledby="superset-tab-terminal"
-        hidden={tab !== "terminal"}
-        className="gen2-superset-tool-panel"
-      >
-        <Gen2TerminalPane
-          key={worktreeId}
-          workspaceId={workspaceId}
-          worktreeId={worktreeId}
-          visible={tab === "terminal"}
-          canStart
-          onExit={() => undefined}
-        />
-      </section>
     </main>
   );
 }

apps/web/components/gen2/terminal-pane.tsx

@@ -32,6 +32,7 @@ export function Gen2TerminalPane({
   const fitRef = useRef<FitAddon | null>(null);
   const sessionRef = useRef<string | null>(null);
   const afterRef = useRef(0);
+  const dimensionsRef = useRef("");
   const [status, setStatus] = useState<"idle" | "starting" | "live" | "ended">(
     "idle",
   );
@@ -80,6 +81,7 @@ export function Gen2TerminalPane({
     term.loadAddon(fit);
     term.open(host);
     if (host.clientWidth > 0 && host.clientHeight > 0) fit.fit();
+    dimensionsRef.current = `${term.rows}:${term.cols}`;
     termRef.current = term;
     fitRef.current = fit;
 
@@ -170,6 +172,12 @@ export function Gen2TerminalPane({
             onExit();
             return;
           }
+          // The legacy guest endpoint parks this request, while the Superset
+          // bridge returns an immediate snapshot. Yield between idle snapshots
+          // so an open shell cannot turn into a tight browser request loop.
+          if (result.chunks.length === 0) {
+            await new Promise((resolve) => setTimeout(resolve, 150));
+          }
         } catch {
           if (cancelled) return;
           networkFailures += 1;
@@ -203,6 +211,9 @@ export function Gen2TerminalPane({
         // A hidden pane measures zero; fitting against that throws.
         if (host.clientWidth === 0 || host.clientHeight === 0) return;
         fitRef.current?.fit();
+        const dimensions = `${term.rows}:${term.cols}`;
+        if (dimensions === dimensionsRef.current) return;
+        dimensionsRef.current = dimensions;
         void post({
           action: "resize",
           sessionId,

infra/runtime/scripts/bootstrap-host.sh

@@ -732,6 +732,16 @@ if ! grep -q '^codev-shell:' "${work_dir}/rootfs/etc/shadow"; then
   echo 'codev-shell:!:20000::::::' >>"${work_dir}/rootfs/etc/shadow"
 fi
 
+# Interactive terminals intentionally run as codev-shell while the checkout is
+# assembled by root. Trust only this workspace and its managed worktrees at the
+# protected system-config scope; a shell user must not have to weaken Git's
+# ownership protection with a global wildcard before `git status` can work.
+cat >>"${work_dir}/rootfs/etc/gitconfig" <<'GITCONFIG'
+[safe]
+	directory = /workspace
+	directory = /workspace/*
+GITCONFIG
+
 cat >"${work_dir}/rootfs/etc/systemd/system/workspace.mount" <<'UNIT'
 [Unit]
 Description=CoDev workspace disk

infra/runtime/scripts/provision-host-image.sh

@@ -246,6 +246,15 @@ cp -a "/usr/lib/${guest_lib_dir}/." \
 install -d -m 0755 "${work_dir}/rootfs/workspace"
 install -d -m 0755 "${work_dir}/rootfs/etc/systemd/system/multi-user.target.wants"
 
+# The interactive shell is unprivileged while CoDev assembles the checkout as
+# root. Trust this checkout and its managed worktrees without making every
+# path trusted for a terminal user.
+cat >>"${work_dir}/rootfs/etc/gitconfig" <<'GITCONFIG'
+[safe]
+	directory = /workspace
+	directory = /workspace/*
+GITCONFIG
+
 cat >"${work_dir}/rootfs/etc/systemd/system/workspace.mount" <<'UNIT'
 [Unit]
 Description=CoDev workspace disk