feat: workspace aliases, tab groups of split panes, native path picker (v2.1.0)

- /api/workspaces and `agenthub workspace(s)` / `--workspace` as aliases of
  /api/lanes and `agenthub lanes` / `--lane`; old names print one stderr note.
  REPL `help lanes|workspace|workspaces` resolves through the aliases.
- A workspace holds up to ten sessions (slots 0-9); every console tab is a
  group of 1-4 split panes (PaneGroups, agenthub.workspace.paneLayout);
  parseGroups keeps the stored active tab when an earlier one is dropped.
- Browse button beside path fields: POST /api/lanes/pick-path opens the OS
  picker on the server's desktop — loopback only and no forwarding header
  (EREMOTE), a display failure is ENODIALOG not a Cancel, the dialog is
  killed when the request closes, a folder field falls back to the in-app
  browser on any failure.
- Changes rail counts chip, image viewer (/git/raw), status bar session
  counts and per-day cost (`date=` on /api/pricing/cost).
- /agenthub-open and /agenthub-doctor run from the INSTALLED build
  (supersededBy), doctor offers fixes behind two confirmations; plugin-open
  treats a locked bootstrap as non-fatal.
- New-terminal shell waits for the first attach (issue #55).
- repo-onboarding / debug-live-issue skills removed.
- OpenAPI: pick-path, lane/date on /pricing/cost, tool on /run/history,
  /api/workspaces mount.

server/lib/pty-run.js

@@ -22,8 +22,8 @@
  * Spawns `claude`, `codex` or `agy` (Antigravity) in the tmux pane based on
  * the tool parameter.
  *
- * A lane can hold up to four sessions, one per Workspace tab: slot 0 is
- * `agenthub-lane-<laneId>` (the lane's own `run_id`), slots 1–3 are
+ * A lane can hold up to ten sessions (`MAX_PANE_SLOT`): slot 0 is
+ * `agenthub-lane-<laneId>` (the lane's own `run_id`), slots 1–9 are
  * `agenthub-lane-<laneId>-<slot>`. A slot holds an AI tool (`spawnRun`) or a
  * plain shell (`spawnShell`, a Terminal tab).
  *
@@ -43,9 +43,10 @@ try {
   /* db-less environment, skip persistence */
 }
 
-const RUN_ID_RE = /^agenthub-lane-(\d+)(?:-([1-3]))?$/;
-/** Highest pane slot a lane may use (the Workspace's 4-pane grid is 0–3). */
-const MAX_PANE_SLOT = 3;
+const RUN_ID_RE = /^agenthub-lane-(\d+)(?:-([1-9]))?$/;
+/** Highest pane slot a lane may use: ten sessions per workspace, 0–9 (the
+ *  Workspace groups them into tabs of up to four split panes each). */
+const MAX_PANE_SLOT = 9;
 const EFFORT_LEVELS = new Set(["low", "medium", "high", "xhigh", "max"]);
 // `auto` is the CLI's own default-ish mode (`claude --permission-mode auto`):
 // it asks only for what its classifier reads as risky. `default` is kept for
@@ -529,7 +530,18 @@ function spawnShell({ laneId, slot = 0, cwd }) {
     ...(process.env.PATH ? { PATH: process.env.PATH } : {}),
     ...desktopEnv(),
   };
-  tmux.newSession({ name: id, cwd, argv: [], env });
+  // The session is born 80×24 and only takes the browser's size when the pane
+  // attaches. A shell started at once printed its prompt at 80 columns (a long
+  // cwd wrapped), and readline's redraw after the resize left the cursor on top
+  // of the prompt (issue #55). So wait until a client is attached — 2 s at
+  // most — then exec the login shell tmux would have run (tmux sets SHELL in the
+  // pane). Not "the first SIGWINCH": the scrollbar `enableMouse` turns on
+  // resizes the pane before any client is there. A tmux that cannot answer
+  // ends the wait at once, i.e. the old behaviour.
+  const waitForSize =
+    "i=0; while [ \"$(tmux display -p -t \"$TMUX_PANE\" '#{session_attached}' 2>/dev/null)\" = 0 ]" +
+    ' && [ $i -lt 20 ]; do sleep 0.1; i=$((i+1)); done; exec "$SHELL" -l';
+  tmux.newSession({ name: id, cwd, argv: ["sh", "-c", waitForSize], env });
   dashboardRuns?.recordRun({
     id,
     sessionId: null,