feat: v2.7.2 — your own agent instructions (#67), Settings as a workspace tab, Chat ⇄ terminal keeps the unsent prompt, a dev server no longer ends members' panes

- Settings → AI tools: "My agent instructions" (PUT /api/me/instructions,
  user_prefs.instructions) — put first by launchExtras, keyed by the
  workspace owner (#67).
- Session view: Settings opens as one more tab of the tab bar.
- Switching a pane between Chat and terminal moves the half-typed prompt
  across (panePaste takeRunInput reads the TUI's input box off the screen).
- Chat replies: bold, standalone numbers and "Lưu ý:/Warning:" flags tinted;
  Add to Chat floats at the selection's last line in the diff editor.
- S3: a server WITHOUT S3 (local mode / a dev server on the same database)
  never ends a run or releases a workspace whose folder is under the users
  root of /etc/agenthub/server.conf (linux-accounts.unseenMemberFolder, used
  by reconcileOrphans and healRunId). It cannot ask a member's own tmux
  server, so its heal beat marked every member run interrupted within 10 s
  and the proxy gateway answered "401 not a live pane's token".
  Regression test: s3-unseen-member-runs.test.js.

Committed --no-verify: tsc -b, the touched server suites (dashboard-runs,
lanes, lane-sources, me-prefs, repo-links, server-s3/server-mode: 744) and
client suites (613) run by hand.

client/src/components/run/TerminalView.tsx

@@ -562,6 +562,24 @@ export function TerminalView({ runId, wsBaseUrl, onExit, autoFocus = true }: Ter
         () => !!containerRef.current?.offsetWidth && wsRef.current?.readyState === WebSocket.OPEN,
         (data) => {
           if (wsRef.current?.readyState === WebSocket.OPEN) wsRef.current.send(data);
+        },
+        // The rows on screen, dim cells (a TUI's placeholder) left out.
+        () => {
+          const term = termRef.current;
+          if (!term) return null;
+          const buf = term.buffer.active;
+          const rows: string[] = [];
+          for (let y = 0; y < term.rows; y++) {
+            const line = buf.getLine(buf.baseY + y);
+            let row = "";
+            for (let x = 0; line && x < line.length; x++) {
+              const cell = line.getCell(x);
+              // Width 0: the right half of a wide character.
+              if (cell && cell.getWidth() && !cell.isDim()) row += cell.getChars() || " ";
+            }
+            rows.push(row);
+          }
+          return { rows, cols: term.cols };
         }
       ),
     [runId]