diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06fcf426f..2982fc998 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [1.91.356.0] - 2026-10-31
+
+**A reviewer's install no longer upgrades the gstack checkout a lane shares.** On a Capy machine, an /autoplan reviewer runs `install.sh --for review-voice` against the same checkout as the lane that dispatched it. Once the lane's workflow lease was more than 120 minutes old, that install fast-forwarded the checkout and rewrote the install verdict as `for=review-voice`. The lane's next workflow was then refused with `INSTALL_UNVERIFIED`.
+
+### Fixed
+- **`--for review-voice` never self-upgrades the checkout.** When origin is ahead, the session prints `SELF_UPGRADE: skipped (review-voice never self-upgrades a shared checkout; fix: <root>/bin/gstack-upgrade when no other session uses this checkout (UPGRADE_SKIPPED))`, leaves HEAD where it was, and the trailer stays ok with a `behind=` note. This holds with or without a lease, and `GSTACK_UPGRADE_FORCE=1` does not override it. If `bin/gstack-doctor-components.sh` cannot be read, the check still treats `review-voice` as a reviewer install. The bootstrapper still fast-forwards a checkout below the supported minimum.
+- **`--check --for review-voice` names `bin/gstack-upgrade` as the fix** instead of the install rerun, which would not move a reviewer checkout.
+
+### Changed
+- **The Captain's digest drops an archived thread from In progress in the same turn** (docs/captain.md, the DIGEST.md template and /captain).
+
 ## [1.91.355.0] - 2026-10-31
 
 **A driven `/ship` on Capy no longer pays one agent turn per finished reviewer, and it can count its own calls.** Replays of gstack-evals #34 and #36 (GSTA-167) made 30 to about 92 parent calls against a target of 12. In the 9-reviewer replay, 23 of 25 waits were the parent waking once per finished reviewer, because the driver told it to end its turn on `wait` while reviewers ran. What reviewers see, which reviewers run, their depth and the blocking floor are unchanged.
diff --git a/VERSION b/VERSION
index 22e4cdb43..f118f635f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.91.355.0
+1.91.356.0
diff --git a/agents-digest/gstack-AGENTS.md b/agents-digest/gstack-AGENTS.md
index 210e3d647..26467173d 100644
--- a/agents-digest/gstack-AGENTS.md
+++ b/agents-digest/gstack-AGENTS.md
@@ -1,4 +1,4 @@
-# gstack digest v1.91.355.0 — regenerate/re-copy after upgrading gstack
+# gstack digest v1.91.356.0 — regenerate/re-copy after upgrading gstack
 
 Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed
 for agent hosts without a full skill install. The full skills add workflows,
diff --git a/bin/gstack-capy-session b/bin/gstack-capy-session
index a8c0b82f0..e269de2e2 100755
--- a/bin/gstack-capy-session
+++ b/bin/gstack-capy-session
@@ -29,7 +29,10 @@
 # inside a workflow (/ship's docs step) must not change gstack under it. The age
 # bound matters on Capy, where the leased harness pid is the machine's
 # long-lived capy-server and a live lease alone would never end the deferral;
-# each gstack-skill-start renews it (UPGRADE_BUSY; GSTACK_UPGRADE_FORCE=1 overrides). Lines: `SELF_UPGRADE: done <old> -> <new>` | `skipped (<reason>)`
+# each gstack-skill-start renews it (UPGRADE_BUSY; GSTACK_UPGRADE_FORCE=1 overrides).
+# An install profile (`--for review-voice`, a dispatched reviewer on a machine
+# whose checkout a lane shares) never self-upgrades, lease or not, and
+# GSTACK_UPGRADE_FORCE does not override it (UPGRADE_SKIPPED, GST-290). Lines: `SELF_UPGRADE: done <old> -> <new>` | `skipped (<reason>)`
 # | `none (current)` | `disabled (<the variable: GSTACK_CAPY_SELF_UPGRADE=off or
 # GSTACK_CAPY_AUTO_UPGRADE=0>)`.
 # --check never moves the checkout; behind origin it prints
@@ -70,6 +73,8 @@ fi
 [ "${GSTACK_CAPY_REMOTE_MIN:-}" = unknown ] && echo "gstack-capy-session: remote minimum unknown (fetch failed); the revision row is local only"
 # shellcheck source=bin/gstack-install-verdict.sh
 . "$ROOT/bin/gstack-install-verdict.sh"
+# shellcheck source=bin/gstack-doctor-components.sh
+. "$ROOT/bin/gstack-doctor-components.sh" 2>/dev/null || gstack_doctor_install_profile() { [ "$1" = review-voice ]; }
 MIN_WRAPPER=$(gstack_support_env_get "$(gstack_source_root "$ROOT/bin")" GSTACK_CAPY_MIN_WRAPPER)
 if [ -n "$MIN_WRAPPER" ] && [ "${GSTACK_CAPY_WRAPPER_REV:-0}" -lt "$MIN_WRAPPER" ] 2>/dev/null; then
   echo "gstack-capy-skill: owner action — Drive copy is wrapper ${GSTACK_CAPY_WRAPPER_REV:-0}, minimum $MIN_WRAPPER; copy $ROOT/capy/skill/gstack/ (CAPY_WRAPPER_STALE)"
@@ -108,7 +113,8 @@ if [ "$CHECK" -eq 1 ]; then
   if behind; then
     # The rerun fast-forwards only what gstack-upgrade would move; otherwise
     # gstack-upgrade itself names the refusal and its fix.
-    if [ "${GSTACK_CAPY_SELF_UPGRADE:-}" = off ]; then report_behind "unset GSTACK_CAPY_SELF_UPGRADE, then $RERUN"
+    if gstack_doctor_install_profile "$SKILL"; then report_behind "$ROOT/bin/gstack-upgrade"
+    elif [ "${GSTACK_CAPY_SELF_UPGRADE:-}" = off ]; then report_behind "unset GSTACK_CAPY_SELF_UPGRADE, then $RERUN"
     elif [ "${GSTACK_CAPY_AUTO_UPGRADE:-1}" = 0 ]; then report_behind "unset GSTACK_CAPY_AUTO_UPGRADE, then $RERUN"
     elif [ "$(git -C "$ROOT" symbolic-ref -q --short HEAD 2>/dev/null)" != "$(sed -n "1s/.*branch '\([^']*\)' of .*/\1/p" "$(git -C "$ROOT" rev-parse --absolute-git-dir 2>/dev/null)/FETCH_HEAD" 2>/dev/null)" ] \
       || [ -n "$(git -C "$ROOT" status --porcelain --untracked-files=no 2>/dev/null)" ] \
@@ -123,6 +129,11 @@ elif [ "${GSTACK_CAPY_SELF_UPGRADED:-}" != 1 ]; then
   elif [ "${GSTACK_CAPY_AUTO_UPGRADE:-1}" = 0 ]; then disabled GSTACK_CAPY_AUTO_UPGRADE
   elif [ -z "${GSTACK_CAPY_REMOTE_MIN:-}" ] || [ "$GSTACK_CAPY_REMOTE_MIN" = unknown ]; then echo "SELF_UPGRADE: none (remote minimum unknown)"
   elif ! behind; then echo "SELF_UPGRADE: none (current)"
+  elif gstack_doctor_install_profile "$SKILL"; then
+    REASON="$SKILL never self-upgrades a shared checkout; fix: $ROOT/bin/gstack-upgrade when no other session uses this checkout (UPGRADE_SKIPPED)"
+    echo "SELF_UPGRADE: skipped ($REASON)"
+    report_behind "$ROOT/bin/gstack-upgrade"
+    export GSTACK_CAPY_BEHIND_BLOCKED="$REASON"
   elif [ ! -x "$ROOT/bin/gstack-upgrade" ]; then echo "SELF_UPGRADE: skipped ($ROOT/bin/gstack-upgrade is missing)"; report_behind "$RERUN"
     export GSTACK_CAPY_BEHIND_BLOCKED="$ROOT/bin/gstack-upgrade is missing; fix: $RERUN (UPGRADE_REFUSED)"
   elif [ "${GSTACK_UPGRADE_FORCE:-}" != 1 ] && [ -x "$ROOT/bin/gstack-lease" ] \
diff --git a/captain/SKILL.md b/captain/SKILL.md
index 419f294fd..9cfb80418 100644
--- a/captain/SKILL.md
+++ b/captain/SKILL.md
@@ -329,7 +329,8 @@ turn, three sections in this order, each row with its thread, one line, and an a
 2. **New**: what landed or changed since the last digest (merges with versions, READYs
    received, trains built, incidents), newest first.
 3. **In progress**: every working lane, what it owns, its state (building, READY, in
-   train slot i, blocked on …) and how long since it last reported.
+   train slot i, blocked on …) and how long since it last reported. A thread the Captain
+   archives leaves this list in the same turn.
 
 Ages make stalls visible: a lane in progress with no report for hours, or a READY waiting
 longer than `FILL_HOURS`, is the controller's next action.
diff --git a/captain/SKILL.md.tmpl b/captain/SKILL.md.tmpl
index 4ccf4b36e..6e895baaf 100644
--- a/captain/SKILL.md.tmpl
+++ b/captain/SKILL.md.tmpl
@@ -257,7 +257,8 @@ turn, three sections in this order, each row with its thread, one line, and an a
 2. **New**: what landed or changed since the last digest (merges with versions, READYs
    received, trains built, incidents), newest first.
 3. **In progress**: every working lane, what it owns, its state (building, READY, in
-   train slot i, blocked on …) and how long since it last reported.
+   train slot i, blocked on …) and how long since it last reported. A thread the Captain
+   archives leaves this list in the same turn.
 
 Ages make stalls visible: a lane in progress with no report for hours, or a READY waiting
 longer than `FILL_HOURS`, is the controller's next action.
diff --git a/captain/templates/DIGEST.md b/captain/templates/DIGEST.md
index 81cf2d3d2..23cfc1357 100644
--- a/captain/templates/DIGEST.md
+++ b/captain/templates/DIGEST.md
@@ -27,5 +27,7 @@ ask format is gstack docs/captain.md, The ask format.
 |---|---|---|---|
 | <code> | <files or area> | <building / READY / train slot i / blocked on …> | <age> |
 
+A thread the controller archives leaves this table in the same turn.
+
 Stalls to act on: a lane with no report for longer than <N hours>, a READY older than
 `FILL_HOURS` with no train, a slot call unanswered for longer than <N minutes>.
diff --git a/docs/captain.md b/docs/captain.md
index a57c1066a..201ce60f6 100644
--- a/docs/captain.md
+++ b/docs/captain.md
@@ -377,7 +377,8 @@ field").
 `DIGEST.md` is rewritten every controller turn: **Needs you** (decisions only the owner
 can make, in [the ask format](#the-ask-format); empty is the goal), **New** (what landed or
 changed, newest first), **In progress** (every lane, what it owns, its state, the age of
-its last report). Ages turn stalls into the controller's next action.
+its last report). Ages turn stalls into the controller's next action. When the controller
+archives a thread, it drops that thread from **In progress** in the same turn.
 
 ## The daily flaky pass
 
diff --git a/docs/capy-install.md b/docs/capy-install.md
index 8187c7c34..d1f2f5a45 100644
--- a/docs/capy-install.md
+++ b/docs/capy-install.md
@@ -47,7 +47,13 @@ upgrade: a reviewer later asked to run a workflow runs the same installer
 install in place to --for <skill> (same checkout ...; no second clone)`),
 applies the project's pins, runs `./setup` and both host profiles, and writes
 the workflow's verdict over the reviewer's. Nothing is removed and nothing is
-cloned twice. Every /autoplan reviewer prompt
+cloned twice. A review-voice session never self-upgrades the checkout, because
+the lane on the same machine may be in the middle of a workflow on it: when
+origin is ahead it prints `SELF_UPGRADE: skipped (review-voice never
+self-upgrades a shared checkout; …)`, certifies the installed revision and
+stays ok with `behind=<n> … (UPGRADE_SKIPPED); fix: <root>/bin/gstack-upgrade`.
+The bootstrapper still fast-forwards a checkout below the supported minimum.
+Every /autoplan reviewer prompt
 ends with this command (`GSTACK TRAILER`); the warm run's budget, under 20 s,
 is measured by `test/capy-review-voice.test.ts`.
 
@@ -101,6 +107,11 @@ there is refused with the usual `--for <skill>` fix.
    note, and a project that needs the newer gstack says so with a floor
    (next section).
    `SELF_UPGRADE: none (current)` when nothing is ahead;
+   `--for review-voice` prints `SELF_UPGRADE: skipped (review-voice never
+   self-upgrades a shared checkout; fix: <root>/bin/gstack-upgrade when no other
+   session uses this checkout (UPGRADE_SKIPPED))` whenever origin is ahead,
+   with or without a lease, and `GSTACK_UPGRADE_FORCE=1` does not change that
+   ([reviewer machines](#reviewer-machines---for-review-voice));
    `GSTACK_CAPY_SELF_UPGRADE=off` (or `GSTACK_CAPY_AUTO_UPGRADE=0`) prints
    `SELF_UPGRADE: disabled (<variable>)`. `--check` never moves the checkout;
    behind origin it prints `gstack-capy-session: behind origin/<branch>:
diff --git a/docs/troubleshooting.md b/docs/troubleshooting.md
index e5119eb6c..471282f4e 100644
--- a/docs/troubleshooting.md
+++ b/docs/troubleshooting.md
@@ -1525,7 +1525,8 @@ yourself; or change the pin in the project.
 **Meaning.** An install-mode session start above the supported minimum found
 the checkout behind origin and could not fast-forward it: the checkout is
 dirty, diverged or pinned (`UPGRADE_REFUSED`), another live session holds a
-lease (`UPGRADE_BUSY`), or `bin/gstack-upgrade` is missing
+lease (`UPGRADE_BUSY`), `bin/gstack-upgrade` is missing, or the session is a
+`--for review-voice` reviewer, which never moves a checkout a lane may share
 (`UPGRADE_SKIPPED`). Nothing was changed, the doctor certified the installed
 revision, and the trailer stays `gstack: ok` with the notes above: a gap
 above the minimum is never a hard fail. The verdict records the installed
diff --git a/package.json b/package.json
index 5ee04070f..e850982dc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "1.91.355",
+  "version": "1.91.356",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",
diff --git a/test/capy-review-voice.test.ts b/test/capy-review-voice.test.ts
index 74d852c11..6d6861bdd 100644
--- a/test/capy-review-voice.test.ts
+++ b/test/capy-review-voice.test.ts
@@ -150,16 +150,19 @@ describe('--for review-voice through the no-Drive brief', () => {
     expect(warm.ms).toBeLessThan(WARM_BUDGET_MS);
   }, 300_000);
 
-  test('origin moves: the same brief fast-forwards the checkout before it certifies', () => {
+  // GST-290: the reviewer's machine may share this checkout with a lane mid-workflow.
+  test('origin moves: the same brief never moves the checkout; it certifies the installed revision and reports behind', () => {
+    const head = git(['rev-parse', 'HEAD'], root);
     fs.writeFileSync(path.join(origin, 'REVIEW_VOICE_FIXTURE.md'), 'moved\n');
     git(['add', '-A'], origin);
     git(['commit', '-qm', 'origin moves'], origin);
-    const tip = git(['rev-parse', 'HEAD'], origin);
     const moved = brief();
     expect(moved.status, moved.out + moved.stderr).toBe(0);
-    expect(moved.out).toContain(`SELF_UPGRADE: done ${VERSION} -> ${VERSION}`);
-    expect(git(['rev-parse', 'HEAD'], root)).toBe(tip);
-    expect(trailer(moved.out)).toBe(OK_TRAILER);
+    expect(moved.out).toContain(`SELF_UPGRADE: skipped (review-voice never self-upgrades a shared checkout; fix: ${root}/bin/gstack-upgrade when no other session uses this checkout (UPGRADE_SKIPPED))`);
+    expect(moved.out).not.toContain('SELF_UPGRADE: done');
+    expect(git(['rev-parse', 'HEAD'], root)).toBe(head);
+    expect(trailer(moved.out)).toStartWith(`gstack: ok ${VERSION} for=review-voice (pins: skipped (helper runtime); behind=1 `);
+    expect(trailer(moved.out)).toContain('(UPGRADE_SKIPPED)');
   }, 300_000);
 
   test('a review-voice check never narrows an ok verdict a fuller install wrote for this HEAD and project', () => {
diff --git a/test/capy-skill-wrapper.test.ts b/test/capy-skill-wrapper.test.ts
index 90ff0882c..c80cdbb13 100644
--- a/test/capy-skill-wrapper.test.ts
+++ b/test/capy-skill-wrapper.test.ts
@@ -85,7 +85,7 @@ function fixture(opts: { minWrapper?: number; cloneAt?: 'A' | 'B' } = {}) {
   if ((opts.cloneAt ?? 'A') === 'A') git(['clone', '-q', '--single-branch', '--depth', '1', `file://${bare}`, root], host.base);
   write(path.join(seed, 'VERSION'), '1.0.1\n');
   write(path.join(seed, 'capy/support.env'), `GSTACK_MIN_REVISION=1.0.1\nGSTACK_CAPY_MIN_WRAPPER=${opts.minWrapper ?? 1}\n`);
-  for (const rel of ['capy/skill/gstack/scripts/install.sh', 'capy/skill/gstack/SKILL.md', 'bin/gstack-capy-session', 'bin/gstack-install-verdict.sh', ...UPGRADE_DEPS]) {
+  for (const rel of ['capy/skill/gstack/scripts/install.sh', 'capy/skill/gstack/SKILL.md', 'bin/gstack-capy-session', 'bin/gstack-install-verdict.sh', 'bin/gstack-doctor-components.sh', ...UPGRADE_DEPS]) {
     if (fs.existsSync(path.join(REPO, rel))) write(path.join(seed, rel), fs.readFileSync(path.join(REPO, rel), 'utf8'), 0o755);
   }
   write(path.join(seed, 'bin/gstack-capy-install'), STUB_INSTALLER, 0o755);
@@ -420,6 +420,58 @@ describe('capy skill: the session hands the installer GSTACK_CAPY_BEHIND', () =>
     expect(f.git(['rev-parse', 'HEAD'])).toBe(f.c);
   });
 
+  // GST-290: a dispatched reviewer's install ran with no lease of its own, fast-forwarded the
+  // shared checkout and rewrote the verdict to for=review-voice, so the lane's next autoplan
+  // admission refused (INSTALL_UNVERIFIED). A review-voice install never moves the checkout.
+  describe('--for review-voice never self-upgrades a shared checkout', () => {
+    const blocked = (root: string) => `review-voice never self-upgrades a shared checkout; fix: ${root}/bin/gstack-upgrade when no other session uses this checkout (UPGRADE_SKIPPED)`;
+    const behindFixture = () => {
+      const f = fixture({ cloneAt: 'B' });
+      write(path.join(f.root, 'bin/gstack-capy-install'), ENV_INSTALLER, 0o755);
+      f.git(['update-index', '--assume-unchanged', 'bin/gstack-capy-install']);
+      return f;
+    };
+
+    test('install mode behind origin with no lease: skipped with the reason, HEAD stays, and the installer gets behind, gstack-upgrade as the fix and the blocked reason', () => {
+      const f = behindFixture();
+      const r = f.run(['--for', 'review-voice']);
+      expect(r.status, r.stdout + r.stderr).toBe(0);
+      expect(r.stdout).toContain(`SELF_UPGRADE: skipped (${blocked(f.root)})\n`);
+      expect(r.stdout).not.toContain('SELF_UPGRADE: done');
+      expect(r.last).toBe(`gstack: ok 1.0.1 for=autoplan behind=1 to=1.0.2 fix=${f.root}/bin/gstack-upgrade blocked=${blocked(f.root)}`);
+      expect(f.git(['rev-parse', 'HEAD'])).toBe(f.b);
+      expect(f.run(['--for', 'review-voice'], { GSTACK_UPGRADE_FORCE: '1' }).stdout).toContain(`SELF_UPGRADE: skipped (${blocked(f.root)})\n`);
+      expect(f.git(['rev-parse', 'HEAD'])).toBe(f.b);
+    });
+
+    test('install mode behind origin with bin/gstack-doctor-components.sh missing: still skipped (the profile check fails closed for review-voice)', () => {
+      const f = behindFixture();
+      f.git(['update-index', '--assume-unchanged', 'bin/gstack-doctor-components.sh']);
+      fs.rmSync(path.join(f.root, 'bin/gstack-doctor-components.sh'));
+      const r = f.run(['--for', 'review-voice']);
+      expect(r.stdout).toContain(`SELF_UPGRADE: skipped (${blocked(f.root)})\n`);
+      expect(f.git(['rev-parse', 'HEAD'])).toBe(f.b);
+    });
+
+    test('install mode on a current checkout: none (current), and no blocked reason', () => {
+      const f = fixture({ cloneAt: 'B' });
+      f.git(['fetch', '-q', 'origin', 'main']);
+      f.git(['merge', '--ff-only', '-q', 'FETCH_HEAD']);
+      write(path.join(f.root, 'bin/gstack-capy-install'), ENV_INSTALLER, 0o755);
+      f.git(['update-index', '--assume-unchanged', 'bin/gstack-capy-install']);
+      const r = f.run(['--for', 'review-voice']);
+      expect(r.stdout).toMatch(/^SELF_UPGRADE: none \(current\)$/m);
+      expect(r.last).toBe('gstack: ok 1.0.2 for=autoplan behind=none to=none fix=none');
+    });
+
+    test('--check behind origin: the fix is gstack-upgrade, not the install rerun (which would not move a review-voice checkout)', () => {
+      const f = behindFixture();
+      const r = f.run(['--check', '--for', 'review-voice']);
+      expect(r.last).toBe(`gstack: ok 1.0.1 for=autoplan behind=1 to=1.0.2 fix=${f.root}/bin/gstack-upgrade`);
+      expect(f.git(['rev-parse', 'HEAD'])).toBe(f.b);
+    });
+  });
+
   test('an older bootstrapper handing --for none to the session in install mode: the session certifies nothing and moves nothing (no self-upgrade, HEAD unchanged), and reports behind like --check', () => {
     const f = fixture({ cloneAt: 'B' });
     write(path.join(f.root, 'bin/gstack-capy-install'), ENV_INSTALLER, 0o755);