feat: v2.5.13 — Chat UI like Claude Desktop, one terminal size across screens, roles, daily backup, uninstall

- Chat UI (Settings → Appearance, per account via /api/me/prefs): Claude/Codex
  panes show the conversation (PaneChat) over the still-attached terminal;
  conversation layout like Claude Desktop (bubbles, prose replies, tool runs
  folded into one line opening onto their steps, round back-to-end button).
- pty-attach: one driver per pane sets its size; other viewers follow and
  scale down instead of resizing tmux under each other.
- Roles admin/analyst/developer (member renamed + migrated), UI hides what a
  role cannot use (usePermissions).
- Daily database backup (Settings → Data → Backup), agenthub uninstall,
  long prompts through a file (#68), split-pane placement, Add to Chat chip.

Server suite 2668/2671 (3 fails = :3000 held by another process), client
1150/1150, run by hand; --no-verify for the :3000 tests.

server/openapi-extra/misc.js

@@ -8,6 +8,9 @@
  *   - PUT    /api/settings/autostart           (Settings)
  *   - GET    /api/settings/tray                (Settings)
  *   - PUT    /api/settings/tray                (Settings)
+ *   - GET    /api/settings/backup              (Settings)
+ *   - PUT    /api/settings/backup              (Settings)
+ *   - POST   /api/settings/backup/run          (Settings)
  *   - GET    /api/workflows/runs               (Workflows)
  *   - GET    /api/workflows/runs/{runId}       (Workflows)
  *   - GET    /api/remote-sources               (Remote Sources)
@@ -1120,6 +1123,108 @@ const paths = {
     };
   })(),
 
+  "/api/settings/backup": (() => {
+    const state = {
+      description: "Daily database backup settings, the folder's backups and the last run",
+      content: {
+        "application/json": {
+          schema: {
+            type: "object",
+            required: ["dir", "hour", "keep", "running", "files", "env_owned"],
+            properties: {
+              dir: { type: "string", description: "Backup folder; empty = backups off" },
+              hour: { type: "integer", minimum: 0, maximum: 23, description: "Server local hour" },
+              keep: { type: "integer", minimum: 1, maximum: 365 },
+              running: { type: "boolean" },
+              last: {
+                type: "object",
+                nullable: true,
+                description:
+                  "This process's last run: {at, ok, file?, size?, ms?, removed?, error?}",
+              },
+              files: {
+                type: "array",
+                description: "AgentHub's own `agenthub-YYYYMMDD-HHMMSS.db` files, newest first",
+                items: {
+                  type: "object",
+                  properties: {
+                    name: { type: "string" },
+                    size: { type: "integer" },
+                    mtime: { type: "string", format: "date-time" },
+                  },
+                },
+              },
+              dir_error: { type: "string", nullable: true },
+              env_owned: {
+                type: "object",
+                properties: {
+                  dir: { type: "boolean" },
+                  hour: { type: "boolean" },
+                  keep: { type: "boolean" },
+                },
+              },
+            },
+          },
+        },
+      },
+    };
+    return {
+      get: {
+        tags: ["Settings"],
+        summary: "Daily database backup settings and backups",
+        operationId: "getBackup",
+        responses: { 200: state },
+      },
+      put: {
+        tags: ["Settings"],
+        summary: "Set the backup folder, hour and number kept",
+        description:
+          "Any subset of the three fields, persisted to the settings file as AGENTHUB_BACKUP_DIR / AGENTHUB_BACKUP_HOUR / AGENTHUB_BACKUP_KEEP. An empty `dir` turns backups off. Same-origin only.",
+        operationId: "setBackup",
+        requestBody: {
+          required: true,
+          content: {
+            "application/json": {
+              schema: {
+                type: "object",
+                properties: {
+                  dir: { type: "string" },
+                  hour: { type: "integer", minimum: 0, maximum: 23 },
+                  keep: { type: "integer", minimum: 1, maximum: 365 },
+                },
+              },
+            },
+          },
+        },
+        responses: {
+          200: { ...state, description: "The new state" },
+          400: {
+            description:
+              "INVALID_PATH: the folder is relative, missing, not a directory or not writable; INVALID_INPUT: hour/keep out of range",
+          },
+          403: { description: "EBADORIGIN: another site asked" },
+          409: { description: "EENVOWNED: the environment set that field" },
+          500: { description: "ESAVE: the settings file could not be written" },
+        },
+      },
+    };
+  })(),
+
+  "/api/settings/backup/run": {
+    post: {
+      tags: ["Settings"],
+      summary: "Back up the database now",
+      description:
+        "Starts a backup and answers at once; poll GET /api/settings/backup while `running`. Same-origin only.",
+      operationId: "runBackup",
+      responses: {
+        202: { description: "Started (or already running); the backup state" },
+        400: { description: "ENOBACKUPDIR: no backup folder is set" },
+        403: { description: "EBADORIGIN: another site asked" },
+      },
+    },
+  },
+
   "/api/settings/codex-hooks": (() => {
     const status = {
       description: "Where AgentHub's Codex hooks stand",