feat: Stop archives a session, Sleep keeps it; SSH keys per type (#82); update Auto fix

- Stop (a tab's or pane's X, Close tab) now archives the session it held
  (DELETE /api/run/:id?archive=1); the new Sleep (moon left of the X, and in
  the tab, pane and session right-click menus) stops the pane but keeps the
  session listed to resume later. Shared endRuns in client/src/lib/stopSession.ts.
- Git identity (#82): an account keeps an ED25519 AND an RSA key (AWS
  CodeCommit takes only RSA), every ssh git offers both, and a member's
  ~/.gitconfig gets core.sshCommand so a git typed in a terminal uses them.
- Update dialog: Auto fix starts a Claude Code session on the install
  folder with the failed update's error.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/routes/git-identity.js

@@ -1,8 +1,9 @@
 /**
  * @file HTTP surface for a user's OWN git identity (`server/lib/git-identity.js`),
- * mounted at `/api/me/git`: the SSH key a clone uses (make, replace, delete —
+ * mounted at `/api/me/git`: the SSH keys a clone uses — ed25519 and/or rsa (make, replace, delete —
  * only the PUBLIC key is ever returned) and the HTTPS logins (save, delete —
- * `hasToken` only, never a password), and the commit author (`user.name` /
+ * `hasToken` only, never a password), whether the account's own terminal
+ * git uses that key (`core.sshCommand`), and the commit author (`user.name` /
  * `user.email` of the account's global git config — a member's commits fail
  * without one). The account is the signed-in user's
  * own Linux account under S3, else the host's, which only an admin (or local
@@ -27,6 +28,7 @@ const STATUS = {
   EBADAUTHOR: 400,
   ESTOREUNREADABLE: 409,
   EBADKEYTYPE: 400,
+  EFOREIGNSSH: 409,
 };
 
 function fail(res, e) {
@@ -36,10 +38,15 @@ function fail(res, e) {
 }
 
 async function view(account) {
+  const keys = identity.sshKeysInfo(account);
+  const terminal = keys.length ? await identity.terminalSshState(account) : undefined;
   return {
     account: account.kind,
     writable: account.kind === "member" || account.writable !== false,
-    ssh: identity.sshKeyInfo(account),
+    // `ssh`: the first key, as before there could be two; `sshKeys`: all.
+    ssh: keys[0] ? { ...keys[0], terminal } : null,
+    sshKeys: keys,
+    sshTerminal: terminal ?? null,
     https: identity.listHttps(account),
     author: await identity.getAuthor(account),
   };
@@ -81,7 +88,8 @@ router.post("/ssh-key", sameOriginGuard, async (req, res) => {
 router.delete("/ssh-key", sameOriginGuard, async (req, res) => {
   try {
     const account = accountOf(req, { write: true });
-    if (!identity.removeSshKey(account)) {
+    const type = req.query.type === undefined ? undefined : String(req.query.type);
+    if (!(await identity.removeSshKey(account, type))) {
       return res.status(404).json({ error: { code: "ENOTFOUND", message: "no SSH key" } });
     }
     res.json(await view(account));
@@ -90,6 +98,23 @@ router.delete("/ssh-key", sameOriginGuard, async (req, res) => {
   }
 });
 
+/**
+ * Whether a plain `git` in the account's own terminal uses the AgentHub key
+ * (`core.sshCommand` in its `~/.gitconfig`, issue #82). `{on: boolean}`.
+ */
+router.put("/ssh-terminal", sameOriginGuard, async (req, res) => {
+  try {
+    const account = accountOf(req, { write: true });
+    if (!identity.sshKeyInfo(account) && req.body?.on === true) {
+      return res.status(404).json({ error: { code: "ENOTFOUND", message: "no SSH key" } });
+    }
+    await identity.setTerminalSsh(account, req.body?.on === true);
+    res.json(await view(account));
+  } catch (e) {
+    fail(res, e);
+  }
+});
+
 router.post("/https", sameOriginGuard, async (req, res) => {
   try {
     const account = accountOf(req, { write: true });