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.

server/__tests__/lane-sources.test.js

@@ -238,6 +238,17 @@ describe("lane-sources instructions and launch", () => {
     src.setInstructions(codexLane.id, null);
   });
 
+  it("puts the owner's own agent instructions before the workspace's", () => {
+    src.setUserInstructions("local", "# my style\n- small diffs");
+    const { systemPrompt, systemPromptFile } = src.launchExtras(lane.id, "claude");
+    assert.match(systemPrompt, /^# my style\n- small diffs\n\n- always answer in Vietnamese/);
+    assert.equal(fs.readFileSync(systemPromptFile, "utf8"), systemPrompt);
+    // A workspace with nothing of its own still gets them.
+    assert.match(src.launchExtras(otherLane.id, "claude").systemPrompt, /^# my style/);
+    src.setUserInstructions("local", null);
+    assert.equal(src.launchExtras(otherLane.id, "claude").systemPrompt, null);
+  });
+
   it("gives an unsupported tool nothing, and skips a vanished folder", () => {
     assert.deepEqual(src.launchExtras(lane.id, "gemini"), {
       addDirs: [],

server/__tests__/me-prefs.test.js

@@ -74,6 +74,22 @@ describe("local mode: one account", () => {
     }
   });
 
+  it("keeps the account's own agent instructions, capped, blank clears", async () => {
+    let r = await call("GET", "/api/me/instructions");
+    assert.deepEqual(r.body, { instructions: "", max: 16000, tools: ["claude", "codex"] });
+    r = await call("PUT", "/api/me/instructions", {
+      body: { instructions: "- answer in Vietnamese\r\n" },
+    });
+    assert.equal(r.status, 200);
+    assert.equal(r.body.instructions, "- answer in Vietnamese\n");
+    r = await call("PUT", "/api/me/instructions", { body: { instructions: 1 } });
+    assert.equal(r.body.error.code, "EBADFIELD");
+    r = await call("PUT", "/api/me/instructions", { body: { instructions: "x".repeat(16001) } });
+    assert.equal(r.status, 413);
+    r = await call("PUT", "/api/me/instructions", { body: { instructions: "  " } });
+    assert.equal(r.body.instructions, "");
+  });
+
   it("marks the first-run setup done, once", async () => {
     const r = await call("POST", "/api/me/onboarded");
     assert.match(r.body.onboardedAt, /^\d{4}-/);
@@ -117,6 +133,19 @@ describe("server mode: per account", () => {
     assert.deepEqual(m, { prefs: { i18nextLng: "en" }, onboardedAt: null });
   });
 
+  it("keeps each account's own agent instructions", async () => {
+    assert.equal((await call("GET", "/api/me/instructions")).status, 401);
+    await call("PUT", "/api/me/instructions", { cookie: mia, body: { instructions: "mia's" } });
+    assert.equal(
+      (await call("GET", "/api/me/instructions", { cookie: mia })).body.instructions,
+      "mia's"
+    );
+    assert.equal(
+      (await call("GET", "/api/me/instructions", { cookie: max })).body.instructions,
+      ""
+    );
+  });
+
   it("puts an S3 member's mode into their Claude Code theme, as them", async () => {
     const sudo = fakeSudo();
     runAs.__setExecImpl(sudo.exec);

server/__tests__/s3-unseen-member-runs.test.js

@@ -0,0 +1,60 @@
+/**
+ * @file s3-unseen-member-runs.test.js
+ * @description A dashboard WITHOUT S3 (local mode, e.g. a dev server) sharing
+ * the database of an S3 server must never end a member's run or release a
+ * member's workspace: their panes live on the member's own tmux server, which
+ * it cannot ask. Before the fix its heal beat marked every member run
+ * `interrupted` within 10 s, and the proxy gateway then refused the pane.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+const { describe, it, after } = require("node:test");
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const os = require("node:os");
+const path = require("node:path");
+
+const ROOT = fs.mkdtempSync(path.join(os.tmpdir(), "s3-unseen-"));
+const USERS = path.join(ROOT, "users");
+process.env.DASHBOARD_DB_PATH = path.join(ROOT, "t.db");
+process.env.AGENTHUB_SERVER_CONF = path.join(ROOT, "server.conf");
+delete process.env.AGENTHUB_MODE; // local mode: this server has no S3
+fs.writeFileSync(
+  process.env.AGENTHUB_SERVER_CONF,
+  `HOST_USER=host\nHOST_UID=1001\nUSERS_ROOT=${USERS}\n`
+);
+
+const runs = require("../lib/dashboard-runs");
+const { db } = require("../db");
+const { healAllRunIds } = require("../routes/lanes");
+
+after(() => fs.rmSync(ROOT, { recursive: true, force: true }));
+
+const start = (id, laneId, cwd) =>
+  runs.recordRun({ id, mode: "interactive", cwd, status: "running", laneId, sessionId: `s-${id}` });
+
+describe("a server without S3 on an S3 machine's database", () => {
+  it("never ends a member's run, and still ends its own", () => {
+    start("agenthub-lane-1", 1, path.join(USERS, "mia", "proj"));
+    start("agenthub-lane-2", 2, "/home/host/proj");
+    runs.reconcileOrphans(() => false);
+    assert.equal(runs.getRun("agenthub-lane-1").status, "running");
+    assert.equal(runs.getRun("agenthub-lane-2").status, "interrupted");
+  });
+
+  it("never releases a member's workspace", () => {
+    const lane = db.prepare(
+      "INSERT INTO lanes (title, cwd, run_id, status) VALUES (?, ?, ?, 'running')"
+    );
+    const member = lane.run(
+      "m",
+      path.join(USERS, "mia", "proj"),
+      "agenthub-lane-1"
+    ).lastInsertRowid;
+    const host = lane.run("h", "/home/host/proj", "agenthub-lane-2").lastInsertRowid;
+    healAllRunIds(new Set());
+    const runId = (id) => db.prepare("SELECT run_id FROM lanes WHERE id = ?").get(id).run_id;
+    assert.equal(runId(member), "agenthub-lane-1");
+    assert.equal(runId(host), null);
+  });
+});