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fix(browse): server persists across Claude Code Bash calls#994

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fix(browse): server persists across Claude Code Bash calls#994
joelgreen wants to merge 1 commit intogarrytan:mainfrom
joelgreen:fix/browse-server-persist-across-bash-calls

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Problem

The browse server dies between Bash tool invocations in Claude Code. Every new $B command starts a fresh server, losing all cookies, page state, and navigation. This makes multi-step QA testing impossible.

Root cause: Two mechanisms kill the server when the parent Bash shell exits:

  1. SIGTERM from sandbox: Claude Code's Bash tool sends SIGTERM to all child processes when a command completes. The server's SIGTERM handler called shutdown().

  2. Parent PID watchdog: The server polls BROWSE_PARENT_PID every 15s. When the parent shell dies, the watchdog called shutdown().

Fix

  • SIGTERM: log and ignore instead of shutdown(). Explicit shutdown still available via /stop or SIGINT.
  • Parent watchdog: log once and continue instead of shutdown(). Idle timeout (30 min) handles cleanup.

What doesn't change

  • /stop command and SIGINT still work for intentional shutdown
  • Windows behavior unchanged
  • Idle timeout still cleans up abandoned servers
  • State file lifecycle unchanged

Repro (before fix)

# Call 1
$B goto http://localhost:3000/login
$B fill '#email' 'test@test.com'

# Call 2 (new Bash invocation)
$B url    # → "about:blank" (server restarted, state lost)

After fix

# Call 2 reconnects to existing server
$B url    # → "http://localhost:3000/login" (state preserved)

Verified across 5+ separate Bash calls maintaining cookies, form fields, and navigation.

The browse server was dying between Bash tool invocations in Claude Code
because:

1. SIGTERM: The Claude Code sandbox sends SIGTERM to all child processes
   when a Bash command completes. The server received this and called
   shutdown(), deleting the state file and exiting.

2. Parent watchdog: The server polls BROWSE_PARENT_PID every 15s. When
   the parent Bash shell exits (killed by sandbox), the watchdog detected
   it and called shutdown().

Both mechanisms made it impossible to use the browse tool across multiple
Bash calls — every new `$B` invocation started a fresh server with no
cookies, no page state, and no tabs.

Fix:
- SIGTERM handler: log and ignore instead of shutdown. Explicit shutdown
  is still available via the /stop command or SIGINT (Ctrl+C).
- Parent watchdog: log once and continue instead of shutdown. The existing
  idle timeout (30 min) handles eventual cleanup.

The /stop command and SIGINT still work for intentional shutdown. Windows
behavior is unchanged (uses taskkill /F which bypasses signal handlers).

Tested: browse server survives across 5+ separate Bash tool calls in
Claude Code, maintaining cookies, page state, and navigation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
garrytan added a commit that referenced this pull request Apr 16, 2026
PR #994 made browse persist across Claude Code Bash calls by ignoring SIGTERM
and parent-PID death, relying on the 30-min idle timeout for eventual cleanup.

Codex outside-voice review caught that the idle timeout doesn't apply in two
modes: headed mode (/open-gstack-browser) and tunnel mode (/pair-agent). Both
early-return from idleCheckInterval. Combined with #994's ignore-SIGTERM, those
sessions would leak forever after the user disconnects — a real resource leak on
shared machines where multiple /pair-agent sessions come and go.

Fix: gate SIGTERM-ignore and parent-PID-watchdog-ignore to normal (headless) mode
only. Headed + tunnel modes respect both signals and shutdown cleanly. Idle
timeout behavior unchanged.

Also documents the deliberate contract change for future contributors — don't
re-add global SIGTERM shutdown thinking it's missing; it's intentionally scoped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
garrytan added a commit that referenced this pull request Apr 16, 2026
VERSION bump + users-first CHANGELOG entry for the wave:
- #993 tilde-in-assignment fix (byliu-labs)
- #994 browse server persists across Bash calls (joelgreen)
- #996 cookie picker alive after cli exits (voidborne-d)
- #864 OpenClaw skills codex-friendly (cathrynlavery)
- #982 OpenCode native setup (breakneo)
- #892 Windows cookie import + DPAPI + v20 CDP fallback (msr-hickory)

Plus 3 follow-up hardening commits we own:
- Extended tilde fix to design resolver + 4 more skill templates
- Gated #994 SIGTERM-ignore to normal mode only (headed/tunnel preserve shutdown)
- Documented CDP debug port security + log Chrome version on v20 fallback

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@garrytan
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Thanks @joelgreen! Landing this in wave PR #1028 (v0.18.1.0). Closing here. 🚀

@garrytan garrytan closed this Apr 16, 2026
garrytan added a commit that referenced this pull request Apr 16, 2026
PR #994 made browse persist across Claude Code Bash calls by ignoring SIGTERM
and parent-PID death, relying on the 30-min idle timeout for eventual cleanup.

Codex outside-voice review caught that the idle timeout doesn't apply in two
modes: headed mode (/open-gstack-browser) and tunnel mode (/pair-agent). Both
early-return from idleCheckInterval. Combined with #994's ignore-SIGTERM, those
sessions would leak forever after the user disconnects — a real resource leak on
shared machines where multiple /pair-agent sessions come and go.

Fix: gate SIGTERM-ignore and parent-PID-watchdog-ignore to normal (headless) mode
only. Headed + tunnel modes respect both signals and shutdown cleanly. Idle
timeout behavior unchanged.

Also documents the deliberate contract change for future contributors — don't
re-add global SIGTERM shutdown thinking it's missing; it's intentionally scoped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
garrytan added a commit that referenced this pull request Apr 16, 2026
VERSION bump + users-first CHANGELOG entry for the wave:
- #993 tilde-in-assignment fix (byliu-labs)
- #994 browse server persists across Bash calls (joelgreen)
- #996 cookie picker alive after cli exits (voidborne-d)
- #864 OpenClaw skills codex-friendly (cathrynlavery)
- #982 OpenCode native setup (breakneo)
- #892 Windows cookie import + DPAPI + v20 CDP fallback (msr-hickory)

Plus 3 follow-up hardening commits we own:
- Extended tilde fix to design resolver + 4 more skill templates
- Gated #994 SIGTERM-ignore to normal mode only (headed/tunnel preserve shutdown)
- Documented CDP debug port security + log Chrome version on v20 fallback

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
garrytan added a commit that referenced this pull request Apr 17, 2026
Resolves overlap between main #1025 (headed browser auto-shutdown fix) and
this wave's #994 (server persists across Bash calls) + our SIGTERM mode-gate
follow-up. Both touch the parent-PID watchdog and SIGTERM handlers.

CHANGELOG / VERSION:
- main shipped v0.18.1.0 with #1025 while this wave was open. Bumped this
  branch to v0.18.2.0 with its own entry on top, per CLAUDE.md branch-scoped
  CHANGELOG rules. Both entries preserved.
- package.json synced to v0.18.2.0.

browse/src/server.ts (parent-PID watchdog):
- Combined main's outer env-var gate (`BROWSE_HEADED=1` skips the watchdog
  entirely) with our inner mode check (if watchdog runs and parent dies,
  decision tree by mode: active picker > headed/tunnel > normal).
- Defense-in-depth: env var skips the setInterval cost, runtime mode check
  catches anything the env var missed.

browse/src/server.ts (SIGTERM handler):
- Combined main's lambda wrap (avoids signal name being passed as exitCode
  → NaN → exit 1) with our mode-aware handler (active picker > headed/tunnel
  shutdown > normal ignore).
- Also wrapped SIGINT in a lambda — main's #1025 fix applied to that handler
  too, but our wave didn't have that fix. Now SIGINT exits with code 0
  reliably.

browse/test/watchdog.test.ts:
- Inverted test 3's expectation: pre-#994 the server died on parent death;
  post-#994 the server STAYS ALIVE (the whole point — multi-step QA across
  Claude Code Bash calls now works). Test now verifies isProcessAlive(serverPid)
  is true after a 20-second observation window with the parent killed.
- Updated docstring to document all 4 watchdog invariants (env-var disable,
  headed-mode disable, headless persists, tunnel shuts down).
- Tunnel mode coverage left as documentation rather than test — tunnelActive
  is a runtime variable set by /pair-agent, not an env var, so faking it
  would require invasive test-only hooks.

Verification: full bun test passes (EXIT=0). Watchdog test: 3 pass, 0 fail
(22.7s including the 20s observation window).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
garrytan added a commit that referenced this pull request Apr 17, 2026
Resolves overlap between main #1025 (headed browser auto-shutdown fix) and
this wave's #994 (server persists across Bash calls) + our SIGTERM mode-gate
follow-up. Both touch the parent-PID watchdog and SIGTERM handlers.

Mechanical resolution only — test inversion follows in next commit.

CHANGELOG / VERSION:
- main shipped v0.18.1.0 with #1025 while this wave was open. Bumped this
  branch to v0.18.2.0 with its own entry on top, per CLAUDE.md branch-scoped
  CHANGELOG rules. Both entries preserved, contiguous version sequence.
- package.json synced to v0.18.2.0.

browse/src/server.ts (parent-PID watchdog):
- Combined main's outer env-var gate (BROWSE_HEADED=1 skips the watchdog
  entirely) with our inner mode check (when watchdog runs and parent dies,
  decision tree by mode: active picker > headed/tunnel > normal).
- Defense-in-depth: env var skips the setInterval cost, runtime mode check
  catches anything the env var missed.

browse/src/server.ts (SIGTERM/SIGINT handlers):
- Combined main's lambda wrap (avoids signal name being passed as exitCode
  → NaN → exit 1) with our mode-aware SIGTERM handler. Active picker check
  short-circuits regardless of mode.
- Wrapped SIGINT in a lambda too — main's #1025 fix applied to that handler,
  but our wave didn't have it. Now SIGINT exits with code 0 reliably.

Note: browse/test/watchdog.test.ts test 3 (added by main) currently FAILS
because main's "watchdog kills on parent death" expectation contradicts
post-#994 "server stays alive on parent death." Inverted in the next commit.
garrytan added a commit that referenced this pull request Apr 17, 2026
main #1025 added browse/test/watchdog.test.ts with test 3 expecting the old
"watchdog kills server when parent dies" behavior. The merge with this
branch's #994 inverted that semantic — the server now STAYS ALIVE on parent
death in normal headless mode (multi-step QA across Claude Code Bash calls
depends on this).

Changes:
- Renamed test 3 from "watchdog fires when parent dies" to "server STAYS ALIVE
  when parent dies (#994)".
- Replaced 25s shutdown poll with 20s observation window asserting the server
  remains alive after the watchdog tick.
- Updated docstring to document all 3 watchdog invariants (env-var disable,
  headed-mode disable, headless persists) and note tunnel-mode coverage gap.

Verification: bun test browse/test/watchdog.test.ts → 3 pass, 0 fail (22.7s).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
garrytan added a commit that referenced this pull request Apr 17, 2026
* fix: extend tilde-in-assignment fix to design resolver + 4 skill templates

PR #993 fixed the Claude Code permission prompt for `scripts/resolvers/browse.ts`
and `gstack-upgrade/SKILL.md.tmpl`. Same bug lives in three more places that
weren't on the contributor's branch:

- `scripts/resolvers/design.ts` (3 spots: D=, B=, and _DESIGN_DIR=)
- `design-shotgun/SKILL.md.tmpl` (_DESIGN_DIR=)
- `plan-design-review/SKILL.md.tmpl` (_DESIGN_DIR=)
- `design-consultation/SKILL.md.tmpl` (_DESIGN_DIR=)
- `design-review/SKILL.md.tmpl` (REPORT_DIR=)

Replaces bare `~/` with quoted `"$HOME/..."` in the source-of-truth files, then
regenerates. `grep -rEn '^[A-Za-z_]+=~/' --include="SKILL.md" .` now returns zero
hits across all hosts (claude, codex, cursor, gbrain, hermes).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(openclaw): make native skills codex-friendly (#864)

Normalizes YAML frontmatter on the 4 hand-authored OpenClaw skills so stricter
parsers like Codex can load them. Codex CLI was rejecting these files with
"mapping values are not allowed in this context" on colons inside unquoted
description scalars.

- Drops non-standard `version` and `metadata` fields
- Rewrites descriptions into simple "Use when..." form (no inline colons)
- Adds a regression test enforcing strict frontmatter (name + description only)

Verified live: Codex CLI now loads the skills without errors. Observed during
/codex outside-voice run on the eval-community-prs plan review — Codex stderr
tripped on these exact files, which was real-world confirmation the fix is needed.

Dropped the connect-chrome changes from the original PR (the symlink removal is
out of scope for this fix; keeping connect-chrome -> open-gstack-browser).

Co-Authored-By: Cathryn Lavery <cathrynlavery@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(browse): server persists across Claude Code Bash calls

The browse server was dying between Bash tool invocations in Claude Code
because:

1. SIGTERM: The Claude Code sandbox sends SIGTERM to all child processes
   when a Bash command completes. The server received this and called
   shutdown(), deleting the state file and exiting.

2. Parent watchdog: The server polls BROWSE_PARENT_PID every 15s. When
   the parent Bash shell exits (killed by sandbox), the watchdog detected
   it and called shutdown().

Both mechanisms made it impossible to use the browse tool across multiple
Bash calls — every new `$B` invocation started a fresh server with no
cookies, no page state, and no tabs.

Fix:
- SIGTERM handler: log and ignore instead of shutdown. Explicit shutdown
  is still available via the /stop command or SIGINT (Ctrl+C).
- Parent watchdog: log once and continue instead of shutdown. The existing
  idle timeout (30 min) handles eventual cleanup.

The /stop command and SIGINT still work for intentional shutdown. Windows
behavior is unchanged (uses taskkill /F which bypasses signal handlers).

Tested: browse server survives across 5+ separate Bash tool calls in
Claude Code, maintaining cookies, page state, and navigation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix(browse): gate #994 SIGTERM-ignore to normal mode only

PR #994 made browse persist across Claude Code Bash calls by ignoring SIGTERM
and parent-PID death, relying on the 30-min idle timeout for eventual cleanup.

Codex outside-voice review caught that the idle timeout doesn't apply in two
modes: headed mode (/open-gstack-browser) and tunnel mode (/pair-agent). Both
early-return from idleCheckInterval. Combined with #994's ignore-SIGTERM, those
sessions would leak forever after the user disconnects — a real resource leak on
shared machines where multiple /pair-agent sessions come and go.

Fix: gate SIGTERM-ignore and parent-PID-watchdog-ignore to normal (headless) mode
only. Headed + tunnel modes respect both signals and shutdown cleanly. Idle
timeout behavior unchanged.

Also documents the deliberate contract change for future contributors — don't
re-add global SIGTERM shutdown thinking it's missing; it's intentionally scoped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix: keep cookie picker alive after cli exits

Fixes #985

* fix: add opencode setup support

* feat(browse): add Windows browser path detection and DPAPI cookie decryption

- Extend BrowserPlatform to include win32
- Add windowsDataDir to BrowserInfo; populate for Chrome, Edge, Brave, Chromium
- getBaseDir('win32') → ~/AppData/Local
- findBrowserMatch checks Network/Cookies first on Windows (Chrome 80+)
- Add getWindowsAesKey() reading os_crypt.encrypted_key from Local State JSON
- Add dpapiDecrypt() via PowerShell ProtectedData.Unprotect (stdin/stdout)
- decryptCookieValue branches on platform: AES-256-GCM (Windows) vs AES-128-CBC (mac/linux)
- Fix hardcoded /tmp → TEMP_DIR from platform.ts in openDbFromCopy

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(browse): Windows cookie import — profile discovery, v20 detection, CDP fallback

Three bugs fixed in cookie-import-browser.ts:
- listProfiles() and findInstalledBrowsers() now check Network/Cookies on Windows
  (Chrome 80+ moved cookies from profile/Cookies to profile/Network/Cookies)
- openDb() always uses copy-then-read on Windows (Chrome holds exclusive locks)
- decryptCookieValue() detects v20 App-Bound Encryption with specific error code

Added CDP-based extraction fallback (importCookiesViaCdp) for v20 cookies:
- Launches Chrome headless with --remote-debugging-port on the real profile
- Extracts cookies via Network.getAllCookies over CDP WebSocket
- Requires Chrome to be closed (v20 keys are path-bound to user-data-dir)
- Both cookie picker UI and CLI direct-import paths auto-fall back to CDP

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix(browse): document CDP debug port security + log Chrome version on v20 fallback

Follow-up to #892 per Codex outside-voice review. Two small additions to the
Windows v20 App-Bound Encryption CDP fallback:

1. Inline comment documenting the deliberate security posture of the
   --remote-debugging-port. Chrome binds it to 127.0.0.1 by default, so the
   threat model is local-user-only (which is no worse than baseline — local
   attackers can already read the cookie DB). Random port 9222-9321 is for
   collision avoidance, not security. Chrome is always killed in finally.

2. One-time Chrome version log on CDP entry via /json/version. When Chrome
   inevitably changes v20 key format or /json/list shape in a future major
   version, logs will show exactly which version users are hitting.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore: v0.18.1.0 — community wave (6 PRs + hardening)

VERSION bump + users-first CHANGELOG entry for the wave:
- #993 tilde-in-assignment fix (byliu-labs)
- #994 browse server persists across Bash calls (joelgreen)
- #996 cookie picker alive after cli exits (voidborne-d)
- #864 OpenClaw skills codex-friendly (cathrynlavery)
- #982 OpenCode native setup (breakneo)
- #892 Windows cookie import + DPAPI + v20 CDP fallback (msr-hickory)

Plus 3 follow-up hardening commits we own:
- Extended tilde fix to design resolver + 4 more skill templates
- Gated #994 SIGTERM-ignore to normal mode only (headed/tunnel preserve shutdown)
- Documented CDP debug port security + log Chrome version on v20 fallback

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix: review pass — package.json version, import dedup, error context, stale help

Findings from /review on the wave PR:

- [P1] package.json version was 0.18.0.1 but VERSION is 0.18.1.0, failing
  test/gen-skill-docs.test.ts:177 "package.json version matches VERSION file".
  Bumped package.json to 0.18.1.0.
- [P2] Duplicate import of cookie-picker-routes in browse/src/server.ts
  (handleCookiePickerRoute at line 20 + hasActivePicker at line 792). Merged
  into single import at top.
- [P2] cookie-import-browser.ts:494 generic rethrow loses underlying error.
  Now preserves the message so "ENOENT" vs "JSON parse error" vs "permission
  denied" are distinguishable in user output.
- [P3] setup:46 "Missing value for --host" error message listed an incomplete
  set of hosts (missing factory, openclaw, hermes, gbrain). Aligned with the
  "Unknown value" error on line 94.

Kept as-is (not real issues):
- cookie-import-browser.ts:869 empty catch on Chrome version fetch is the
  correct pattern for best-effort diagnostics (per slop-scan philosophy in
  CLAUDE.md — fire-and-forget failures shouldn't throw).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* test(watchdog): invert test 3 to match merged #994 behavior

main #1025 added browse/test/watchdog.test.ts with test 3 expecting the old
"watchdog kills server when parent dies" behavior. The merge with this
branch's #994 inverted that semantic — the server now STAYS ALIVE on parent
death in normal headless mode (multi-step QA across Claude Code Bash calls
depends on this).

Changes:
- Renamed test 3 from "watchdog fires when parent dies" to "server STAYS ALIVE
  when parent dies (#994)".
- Replaced 25s shutdown poll with 20s observation window asserting the server
  remains alive after the watchdog tick.
- Updated docstring to document all 3 watchdog invariants (env-var disable,
  headed-mode disable, headless persists) and note tunnel-mode coverage gap.

Verification: bun test browse/test/watchdog.test.ts → 3 pass, 0 fail (22.7s).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(ci): switch apt mirror to Hetzner to bypass Ubicloud → archive.ubuntu.com timeouts

Both build attempts of `.github/docker/Dockerfile.ci` failed at
`apt-get update` with persistent connection timeouts to archive.ubuntu.com:80
and security.ubuntu.com:80 — 90+ seconds of "connection timed out" against
every Ubuntu IP. Not a transient blip; this PR doesn't touch the Dockerfile,
and a re-run reproduced the same failure across all 9 mirror IPs.

Root cause: Ubicloud runners (Hetzner FSN1-DC21 per runner output) have
unreliable HTTP-port-80 routing to Ubuntu's official archive endpoints.

Fix:
- Rewrite /etc/apt/sources.list.d/ubuntu.sources (deb822 format in 24.04)
  to use https://mirror.hetzner.com/ubuntu/packages instead. Hetzner's
  mirror is publicly accessible from any cloud (not Hetzner-only despite
  the name) and route-local for Ubicloud's actual host. Solves both
  reliability and latency.
- Add a 3-attempt retry loop around both `apt-get update` calls as
  belt-and-suspenders. Even Hetzner's mirror can have brief blips, and the
  retry costs nothing when the first attempt succeeds.

Verification: the workflow will rebuild on push. Local `docker build` not
practical for a 12-step image with bun + claude + playwright deps + a 10-min
cold install. Trusting CI.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(ci): use HTTP for Hetzner apt mirror (base image lacks ca-certificates)

Previous commit switched to https://mirror.hetzner.com/... which proved the
mirror is reachable and routes correctly (no more 90s timeouts), but exposed
a chicken-and-egg: ubuntu:24.04 ships without ca-certificates, and that's
exactly the package we're installing. Result: "No system certificates
available. Try installing ca-certificates."

Fix: use http:// for the Hetzner mirror. Apt's security model verifies
package integrity via GPG-signed Release files, not TLS, so HTTP here is
no weaker than the upstream defaults (Ubuntu's official sources also
default to HTTP for the same reason).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: Cathryn Lavery <cathrynlavery@users.noreply.github.com>
Co-authored-by: Joel Green <thejoelgreen@gmail.com>
Co-authored-by: d 🔹 <258577966+voidborne-d@users.noreply.github.com>
Co-authored-by: Break <breakneo@gmail.com>
Co-authored-by: Michael Spitzer-Rubenstein <msr.ext@hickory.ai>
JerkyJesse added a commit to JerkyJesse/cavestack that referenced this pull request Apr 18, 2026
Ports gstack garrytan#994 (joelgreen) + garrytan#1020 gating + SIGINT wrapper fix (garrytan#1025).

The browse server was dying between Claude Code Bash tool invocations because:
1. SIGTERM: Claude Code sandbox sends SIGTERM to child processes when a Bash
   command completes. Server called shutdown() and deleted state file.
2. Parent watchdog: 15s BROWSE_PARENT_PID poll shut down on parent death.

Both made every new $B call start a fresh server with no cookies or state.

Fix (scoped to normal headless mode):
- SIGTERM handler: in headless mode, log and ignore. Idle timeout (30min)
  handles eventual cleanup. Headed/tunnel modes respect SIGTERM and shutdown
  cleanly (idle timeout early-returns in those modes, so ignoring would leak).
- Parent watchdog: same three-way resolution. Active cookie picker always
  stays alive to avoid stranding picker UI with "Failed to fetch".
- SIGINT (Ctrl+C) always shuts down — intentional stop.
- Outer IS_HEADED_WATCHDOG gate skips watchdog entirely in headed mode.
- shutdown() called via arrow wrapper so signal name arg doesn't become
  NaN exitCode (fixes legacy exit-code-1 bug).

Imports hasActivePicker() from cookie-picker-routes (added in prior commit).

/open-cavestack-browser path used in place of /open-gstack-browser in inline docs.

Upstream: garrytan/gstack@1211b6b

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
JerkyJesse added a commit to JerkyJesse/cavestack that referenced this pull request Apr 18, 2026
Ports 5 upstream PRs from garrytan#1028 (community wave v0.18.1.0):

- garrytan#892 Windows cookie import (DPAPI + v20 CDP fallback)
- garrytan#996 Cookie picker survives CLI exit
- garrytan#994 + garrytan#1020 SIGTERM persistence + headless-mode gating
- garrytan#993 Tilde-in-assignment fix (design resolver + 5 templates)
- garrytan#864 OpenClaw native skill frontmatter normalization (codex-friendly)

Plus local change: caveman mode locked to full (lite/ultra removed).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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