Regression test for the _ref_map merge (salvaged from #79515): the live
0.19.3 driver splits action refs into refs[] while content_refs re-lists
every node with empty actions; the empty entries must not clobber the
action-bearing ones. Caught live: every typed click refused with
browser_ref_stale until the merge fix.
Live-tested against the real cua-driver 0.19.3 binary (Linux x86_64):
- bounded serve flags corrected: the daemon accepts
--session-policy/--approve-session-policy, not the docs'
--capability-manifest names (which it rejects). Verified end-to-end:
a bounded daemon with a real policy file starts and reports running.
- browser-approve verified real but interactive-only (refuses without a
TTY) and its token is a legacy compatibility path disabled by default
on current drivers (per the live browser_prepare schema). Kept as a
passthrough; no longer presented as the primary route.
- NEW primary standard-mode route, verified live: launch the runtime
with cua-driver's trusted-launcher grant. config opt-in
computer_use.grant_existing_profile: true appends
--grant existing-profile to the standard-mode MCP spawn (MCP
initialize verified accepting the flag). Default false = attachment
keeps failing closed. Never applied to bounded/unrestricted daemons.
- Skill, system prompt, tool schema, and docs updated to the verified
ladder: config grant > bounded manifest > YOLO; token = legacy.
Completes the typed cua_browser_* route (PR #74166 lineage) with the
authorization surface that makes existing-profile attachment and
repeatable bounded automation reachable by real users:
- hermes computer-use browser-approve: CLI passthrough that mints
cua-driver's five-minute single-use attachment token for one exact
(pid, window_id). The user, never the model, is the token source.
- approval_token passthrough on cua_browser_prepare (schema + dispatch +
browser_route), forwarded only for existing_profile and only as a
non-empty string.
- computer_use.permission_mode: bounded + capability_manifest config:
private per-session embedded daemon launched with
--capability-manifest/--approve-capability-manifest; missing manifest
fails loudly. 'unrestricted' is deliberately NOT a config value —
it stays bound to the explicit per-session YOLO toggle.
- Skill + system-prompt + docs guidance for the three authorization
rungs and the isolated-profile-first default.
E2E-verified against a temp HERMES_HOME: real config resolution to
bounded, loud failure without a manifest, real argparse path driving a
fake cua-driver binary, standard default preserved.
Follow-up to #86916. That fix gave named sessions their own daemon
(socket/log/pid) and their own provider browser — but on a SHARED local
Chrome / CDP browser, a fresh named daemon still attaches to the first
existing page, the same page a sibling daemon may hold. A named session
that never calls new_tab() could still stomp another's tab.
browser_exec now prepends a small preamble to the model's code for named
sessions on shared browsers: once per daemon process (marker keyed by
uid + BU_NAME + daemon pid), it creates a fresh tab via
Target.createTarget and switch_tab()s onto it before any model code
runs. Private per-name browsers (provider-keyed bu-named-<name>, or
direct-API Browser Use cloud) skip the preamble via an internal env
sentinel popped before launch — there's nobody to collide with, and the
extra tab would leak.
Best-effort by design: if the preamble's CDP calls fail, behavior
degrades to pre-fix, never blocks the exec.
E2E against a shared headless Chrome with the STOCK harness: two named
sessions issuing bare js() writes (no new_tab) kept distinct state
(EDGE-A/EDGE-B read back intact); the sabotage run without the preamble
reproduced the clobber (both read EDGE-B). Removes the dependency on the
upstream browser-harness tab-isolation PR for correctness.
session=<name> previously set BU_NAME and then skipped backend resolution
entirely — the parameter was documented as cloud-only, so all local/CDP
work funneled through the single default daemon and one IPC socket, and
concurrent sessions (parallel subagents, simultaneous chats) clobbered
each other's browser connection. Reported by @shantanugoel on X.
Now a named session composes with whatever browser source is configured:
- BU_NAME still namespaces the harness daemon (per-name IPC socket, log,
pid — upstream already isolates these), for local Chrome and CDP.
- The /browser connect CDP override is now exported for named sessions
too; previously a named daemon ignored it and fell back to scanning
local Chrome profiles.
- On provider backends (Browserbase, Firecrawl, Nous gateway), the name
keys its own provider browser via the shared _get_session_info cache
(bu-named-<name>), so each name gets its own cloud browser, the same
name reuses one across calls and tasks, and unnamed calls keep the
per-task key.
- Direct-API Browser Use cloud configs keep the native named-daemon path
(provider resolution would double-session and double-bill).
Tool schema/description updated so models reach for session=<name> for
parallel work on any backend, not just cloud.
E2E: two named sessions against a real headless Chrome (real browser-use
CLI, BU_CDP_URL) ran concurrently, set distinct page state, and read it
back intact; sabotage run confirms the new tests fail without the fix.
End-to-end #86632 reproduction: a real AIAgent child (mocked LLM) with the
post-turn skill-review trigger armed, dispatched through
delegate_task(background=True) on a session runtime where async delivery is
unsupported and no origin session id is bound (cron, post-#66617) — forcing
the synchronous fallback. Asserts (1) delegate_task returns the child's
result, and (2) the automatic background-review fork never spawns inside the
delegated child (the wedge site: the fork replayed the conversation on the
child's finalize path, and _child_future.result(timeout=None) never returned;
heartbeat went stale after 15 idle cycles and the cron watchdog killed the
job).
Verified RED on pre-fix main (fork spawns and wedges), GREEN with the
_delegate_depth guard in AIAgent._spawn_background_review.
Fixes#86632
The orphan reaper had two gaps that let agent-browser daemons accumulate
indefinitely inside a single long-lived hermes process:
1. `_reap_orphaned_browser_sessions()` ran exactly once, before the cleanup
loop started, so a leak appearing after boot could never be recovered.
2. `owner_alive is True` skipped unconditionally. In-memory session tracking
is lost on any exception path between spawn and registration, but the
owner PID stays up — so such a daemon was skipped forever.
The daemon-side `AGENT_BROWSER_IDLE_TIMEOUT_MS` is not a backstop for (2):
it does not fire when the daemon itself is wedged, e.g. after Chrome's
framework was replaced underneath it by an auto-update.
Observed on macOS: five agent-browser daemons (96 Chrome processes) built up
over 10 days inside an 18-day-uptime hermes process, holding roughly 5 CPU
cores busy and driving the load average past 100. Four of those processes
were still running a Chrome framework version that had since been replaced
on disk, spinning at ~85% CPU each.
Changes:
- Re-run the reaper every `BROWSER_ORPHAN_REAP_INTERVAL` (300s) from inside
the cleanup loop. Cycle 0 preserves the existing startup reap.
- When the owner is alive but the session is untracked, fall back to idle
age: reap past `BROWSER_ORPHAN_GRACE_SECONDS`, defined as
`max(1h, 20 x inactivity_timeout)`. Unknown age fails safe.
- Add `_socket_dir_idle_seconds()` — the newest mtime under a session's
socket dir. Every browser command writes `_stdout_<cmd>` / `_stderr_<cmd>`
there, making it a last-activity marker that survives hermes restarts and
does not depend on in-memory bookkeeping surviving an exception path. It
scans directory entries rather than reading the directory mtime alone:
command names repeat, and rewriting an existing `_stdout_click` updates
that file's mtime but not the directory's, so a dir-mtime-only check would
report a busy session as idle and reap it.
Sessions still present in `_active_sessions` are never touched at any age,
and the new path still goes through `_verify_reapable_browser_daemon`, so
the anti-spoof / anti-PID-recycle guarantees from #14073 are unchanged.
Adds 9 tests: idle-age unit tests (including the dir-mtime regression),
spared/reaped/fail-safe cases for a live owner, the identity-guard gate on
the new path, and a periodic-reap test asserting more than one reap per
cleanup-thread lifetime.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Sweeper follow-up: the browser-screenshot and video kwargs captures now
also assert max_tokens is absent, protecting the central auxiliary
no-cap policy against refactors that would restore the hardcoded caps.
Covers the max-tokens-knob contract: vision call_kwargs omit max_tokens
entirely (configured values, defaults, and even an explicit
auxiliary.vision.max_tokens config entry must never be forwarded), so
providers use their full output budget.
The guard's "use a separate worktree or temporary clone" advice sent
agents to /tmp by default. /tmp is RAM-backed tmpfs on most distros, and
parallel salvage clones each running npm ci (~1.6GB per clone) filled a
32GB tmpfs to 97% during a 15-subagent campaign, ENOSPC-ing sibling test
runs. The message now recommends `git clone --shared <root> ~/.hermes/scratch/<task>`
(honoring HERMES_HOME), warns that dependency installs belong on real
disk, and tells the agent to delete the clone once the branch is pushed.
Follow-up on the salvaged #85764 commits, addressing review findings:
- _session_left_live_context now allowlists end_reason == 'compression'
or a fresh reset (_FRESH_RESET_END_REASONS) instead of accepting any
non-None end_reason. The wide predicate let 'branched' parents — whose
transcript /branch verbatim-copies into the child — surface as
same-lineage recall hits, returning content already in the caller's
live context (verified empirically vs main).
- _FRESH_RESET_END_REASONS is now derived from the canonical
hermes_state_common._RESET_END_REASONS (plus CLI 'new_session') instead
of a third hand-maintained copy, per that tuple's anti-drift comment.
Import verified cycle-free.
- Browse drops the Python re-check of parent_session_id rows:
list_sessions_rich (include_children=False) already applies the
canonical _LISTABLE_CHILD_SQL classifier, and the Python re-check
re-hid legacy pre-marker reset children the SQL same-key heuristic
deliberately admits. _has_reset_from_marker (now orphaned) removed.
- Tests: branched-parent exclusion regression guard (mutation-checked:
fails on the overbroad predicate) + legacy pre-marker reset child
browse guard. 48/48 pass.
SessionDB could leave native SQLite handles open when construction failed
partway through schema/pragma/FTS/repair/lock/interrupt handling. Other
short-lived callers (MCP reads/polling, session search, reactions, trace
upload, insights, shutdown recovery) opened temporary SessionDB handles
without a complete ownership boundary. API-server profile caches and
RetainDB shutdown had similar late-close races. Under sustained load this
exhausted file descriptors (EMFILE).
- Close partially initialized SessionDB connections on every constructor
exception path via a finally block guarded by an initialization-complete
flag.
- Close temporary/cross-profile SessionDB handles in finally blocks across
CLI, MCP, search, trace, reactions, insights, and recovery paths.
- Add API-server per-profile cache ownership and disconnect cleanup.
- Make RetainDB writer-queue shutdown exception-safe: track connections per
thread, close on worker exit, reject new enqueues after shutdown starts,
and sweep any connections left by short-lived threads.
- Add regression coverage for constructor failures, worker-thread readers,
API disconnect failures, shutdown recovery, RetainDB late enqueue, and
foreign-loop async clients.
Salvage notes: the original PR's per-thread WAL-reader ownership changes
were superseded by main's read-connection pool (permits + checkout/return);
its cron timeout-abandon fix is credited separately to #72822's earlier
identical fix.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
A bare SessionDB() resolves the launch profile's default state.db, but
parents can hold non-default per-profile handles (tui_gateway opens
SessionDB(db_path=<profile_home>/state.db) for non-launch profiles and
hands them to agents via _transfer_db_to_agent). A child of such a
parent would write its transcript into the WRONG database — cross-
profile leakage that breaks parent_session_id lineage and
session_search. Open the dedicated handle at the parent handle's
db_path instead (AsyncSessionDB forwards .db_path via __getattr__, so
the gateway wrapper path works too). Regression test verified RED on
the pre-fix code.
Review follow-up (cc3f18197): if AIAgent() raises inside _build_child_agent
the freshly-opened dedicated handle has no owner and no child close() will
ever run — release it on the exception path so the sqlite fds don't
outlive the failed spawn. Also pin the degradation contract with a test:
a parent without a SessionDB still yields session_db=None children.
Cron run_job closes its per-job SessionDB in its finally block while a
fire-and-forget background delegation subagent is still flushing on a
daemon thread. The child shared the parent's SessionDB object, so every
subsequent flush hit the closed handle ('NoneType' object has no
attribute 'execute') and the child's whole transcript was silently
dropped. The same teardown-while-child-alive shape exists on gateway
session end and /new mid-delegation.
Each child now opens its own SessionDB connection (owned flag set at
construction so child.close() releases it), so no parent teardown can
close the child's handle out from under it.
Regression test proves the child gets a distinct live handle that
survives the parent's close().
Teknium review on #75732: releasing the pending clarify whenever
resolve_text_response_for_session returned False also cancelled
retryable multi-select invalid selections (out-of-range numbers,
unrecognised comma-lists).
Classify rejected typed replies in clarify_gateway:
- rejected_prose → cancel clarify, fall through busy routing (deadlock break)
- rejected_selection → keep clarify armed so the user can retry
Add native multi-select gateway regressions for both paths.
Regress the #85756 chain: a session_reset parent must surface from the
empty child, title/scroll must follow, browse must list that parent, and
live delegation children must stay hidden.
A delegated subagent that exhausts its per-child iteration budget
(delegation.max_iterations) still returns a summary, so the result carries
status='completed' even though the child's exit_reason is 'max_iterations' and
its work was cut off mid-task. The parent then reads 'completed', trusts the
partial summary, and only discovers the truncation by parsing the prose (where
the child happens to mention 'hit the iteration limit'). That wastes parent
turns and risks acting on incomplete work.
exit_reason is already computed authoritatively and threaded to every
parent-visible surface; it just wasn't reflected anywhere the parent reads at a
glance. This surfaces it:
- delegate_tool.py: add a parent-visible boolean 'truncated' (= exit_reason ==
'max_iterations') to each task entry, alongside the existing exit_reason.
- process_registry._format_async_delegation: for both the batch and single-task
paths, when truncated -> use a warning icon, append
'TRUNCATED: hit max_iterations — work may be incomplete' to the header/Status
line, and prefix the summary with an unmissable truncation notice. status
semantics are left unchanged (stays 'completed') so existing icon/summary
branch logic and ~10 tests asserting status=='completed' stay valid.
Tests: single-task truncated -> banner; single-task clean -> no banner; batch
marks only the truncated task, not its clean sibling. 23/23 in the async-
delegation suite.
Co-authored-by: Teknium <teknium1@users.noreply.github.com>
memory replace/remove target an entry by old_text but supply the replacement
via content — an asymmetric pairing. Callers naturally reach for new_text to
mirror old_text (it's exactly the patch tool's old_string/new_string shape),
which left content empty and errored 'content is required'. The failure also
rendered tersely, making the cause easy to miss and costing a retry.
Accept new_text as an alias for content on both shapes:
- single-op: coalesce content = content or new_text in memory_tool() + a
new_text param wired through the registry handler.
- batch ops: content = op.content or op.new_text (and in the approval-gate
preview builder).
- schema: document the alias on content and add a new_text property to the
single-op params and batch item props so strict validators accept it.
content wins if both are set.
Tests: new_text alias on single add/replace, batch add/replace, and
content-wins-over-new_text. 43/43 across memory tool + schema suites.
Co-authored-by: Teknium <teknium1@users.noreply.github.com>
Session-boundary cleanup (gateway/run.py: run-finalization and prompt
delivery-failure paths) calls clear_session to cancel pending clarifies.
It unconditionally overwrote every entry's response with the empty
cancellation sentinel, even entries already resolved by a button callback
or text intercept. A waiter that had already observed the resolved event
would then return the empty sentinel instead of the real answer, silently
discarding the user's response on /new, gateway shutdown, or cached-agent
eviction.
First-writer-wins: clear_session now cancels only entries whose event is
not yet set; already-resolved entries keep their response. Mirrors the
guard resolve_gateway_clarify gained for the same contract. Reported by
doryani-ai on PR #75732; regression test covers the button-then-cleanup
interleaving.
- The gateway api_server fire webhook acknowledges 202 only after a
durable claim + execution row exist (admission failure stays retryable
as 503; a live claim answers 200 duplicate), then dispatches the
claimed snapshot with the live runner adapters (delivery parity with
the built-in ticker, including relay-fronted and E2EE platforms).
- Legacy single-phase providers (a documented fire_due override without
split hooks) keep being driven through their own hook. Capability
detection now credits claim_fire AND fire_claimed overrides, so
Chronos is correctly classified split-aware (its re-arm lives in
fire_claimed; the redundant fire_due passthrough override is removed).
- Multi-profile dashboards fail closed for external providers: an
unscoped reconcile would disarm other profiles' armed one-shots in the
shared NAS registry.
- Manual runs (cronjob run) carry the owner-bearing claimed snapshot
through every entry point, composing with upstream's manual-run
heartbeat (#76502) and background dispatch.
Note: current main moved the dashboard NAS webhook to a pure
forward-to-gateway design (the gateway owns execution and live
adapters), so the dashboard-side claim/tracking machinery from earlier
revisions of this PR is dropped; the durable admission contract lives in
the gateway webhook path.
The type-coercion test pinned index order of todos, which #42649's
_normalize_order intentionally changes (in_progress lifts ahead of
earlier pending rows). Assert coercion by id instead of position.
Correlate approval requests, reject stale responses, replay pending approvals after reconnect or session resume, and preserve fail-closed timeout behavior.
Restores pass-through behavior for cron delivery and react/unreact that
was lost when d409f6748 routed them through resolve_send_target. Stored
cron job targets the channel directory doesn't recognize (e.g.
telegram:ops-room on a fresh install, photon group GUIDs) used to go to
the adapter verbatim; after d409f6748 they were silently dropped. Same
for react on platform-native ids.
Adds an opt-in pass_unresolved_references flag to resolve_send_target,
passed only by cron and react. Model-facing send tool stays strict.
Plugin platforms with a parser stay strict for all callers. The optional
validator still has the final say over passed-through ids.
Follow-up fixes on salvage:
- Update test_cron_relay_delivery_guards.py mock lambdas to accept **kw
(file added to main after PR branch point; lambdas didn't accept the
new keyword argument)
- Consolidate duplicated pass-through blocks into _pass_through_unresolved
local helper
Fixes#85128
Co-authored-by: Adolanium <Adolanium@users.noreply.github.com>
The browser-use CLI runs under its own Python (uv tool / uvx), which
can differ from Hermes's venv interpreter. PYTHONPATH/PYTHONHOME
inherited from the agent process point at Hermes's venv
site-packages, and a child interpreter honors them ahead of its own —
so the CLI imported compiled C-extensions (pydantic_core) built for
the wrong interpreter and crashed with ABI mismatch /
ModuleNotFoundError (issues 83427, 84841, 86006, 86104; hits the
desktop backend on py3.14 and any shell exporting PYTHONPATH).
Strip both vars in _base_subprocess_env() — the CLI manages its own
environment and never needs Hermes's import path.
Salvaged from PR 83471 by Benjamin (@n1majne3), the earliest of two
independent fixes (also PR 84022 by @jklance16, PYTHONPATH-only);
regression test covers both vars and preserves unrelated env.
OPAQUE_DOCUMENT_EXTENSIONS was missing 10 extensions that read_file
auto-extracts via anydoc: .docm, .xlsm, .xlsb, .pptm, .ppsx, .ppsm,
.pps, .pot, .rtf, .epub. Each has the same corruption path: read_file
shows extracted text, model writes it back, container is destroyed.
Flagged by @egilewski on PR #82818 — proven live for .docm (text write
left a non-zip corpse). Added bytes-untouched regression test for .docm.
Port from nearai/ironclaw#7109: read_file auto-extracts .docx/.xlsx/.pptx
(and PDF via anydoc) to readable text, so a model plausibly believes it
holds the file's contents and writes the edited text back with
write_file/patch — silently destroying the document container. Proven
live on main: write_file over a valid .docx left a non-zip corpse, and a
text write over an existing .pdf clobbered the %PDF header.
- tools/binary_extensions.py: OPAQUE_DOCUMENT_EXTENSIONS +
has_opaque_document_extension() + is_pdf_path() (pure string checks)
- tools/file_tools.py: _check_binary_document_write() — opaque container
formats (doc/docx/xls/xlsx/ppt/pptx/odt/ods/odp) always rejected; .pdf
rejected only when overwriting an existing regular file (new-PDF
creation stays allowed, matching the upstream split guard). Wired into
write_file_tool and patch_tool (replace + V4A Update/Add headers;
Delete/Move skip the guard since they write no text).
- tests/tools/test_binary_document_write_guard.py: guard unit tests +
end-to-end write_file/patch coverage incl. bytes-untouched assertions.
Everything Browser Use is now managed by Hermes: the canonical binary
is the one install_cli() provisions into HERMES_HOME/bin, and every
resolution and provisioning site prefers it.
- _find_cli(): probe order flipped to managed bin -> PATH ->
user-level tool dir (then uvx across the same order). A user's own
uv tool install can no longer shadow the Hermes-managed copy with a
drifted version; side installs only matter when we have nothing.
- install_cli(): a browser-use on PATH no longer short-circuits the
install — only the managed copy does, so selecting any backend
provisions the copy Hermes controls and updates.
- _ensure_browser_use_cli() (hermes tools): drops its own PATH check
and always delegates to install_cli(), the single owner of the
managed-copy policy.
- install.sh / install.ps1: same short-circuit fix — only
HERMES_HOME/bin/browser-use counts as installed.
Follow-up to #86240 and #86320: with every non-Camofox backend
selection installing the CLI, managed-first closes the remaining
version-drift/shadowing class instead of guarding single sites.
Tests updated to pin the new contract: managed beats PATH and
user-local; PATH install does not satisfy install_cli; helper always
delegates. E2E-verified precedence chain with real files and a real
degraded-PATH install attempt.
Desktop/TUI workers can spawn with a minimal PATH that omits
~/.local/bin, the default location where uv tool install links the
browser-use binary. _find_cli() then failed to resolve an installed
CLI and Browser Use mode silently fell back to the built-in tools.
Probe the user-level tool dir (~/.local/bin on POSIX, APPDATA/uv/bin
on Windows) between PATH and the managed HERMES_HOME/bin, for both
the browser-use binary and the uvx fallback.
Salvaged from PR #83788 by @kimyxx onto current main; tests adapted
and extended with precedence and uvx coverage.
The subprocess import test was creating .tmp-hermes-exec-ask-import/
in the repo root without cleanup. Switch to pytest's tmp_path fixture
so the temp directory is auto-cleaned and never appears as untracked.
Regression tests for silent pending_approval when ask-mode leaks into
interactive CLI, plus a Path-typed hermes_constants mock so the
slash-worker profile_home test survives per-file isolation.
Add TestNotificationRedaction class with two tests:
1. test_completion_notification_redacts_secret — verifies _move_to_finished
redacts API keys in completion notifications before enqueueing
2. test_watch_match_notification_redacts_secret — verifies _check_watch_patterns
redacts secrets in watch_match notifications before enqueueing
These tests cover the gap identified in #43025 where the explicit process
tool path (poll/log/wait) was redacted but the automatic notification
delivery path was not.
format_process_notification had no case for watch_overflow_tripped /
watch_overflow_released, so a watch-pattern notification flood surfaced
as '[IMPORTANT: Background process exited (exit code ?)]' — a phantom
exit notification for a process that never existed — while the actual
'watch flood, N notifications suppressed' summary in the event's
message field was silently dropped. The gateway delivery path was
worse: _drain_gateway_watch_events retained only watch_match and
watch_disabled, discarding overflow events entirely before formatting.
Route both event types through the message field in the shared
formatter and the gateway formatter, and retain them in the gateway
drain.
Windows contributors' tools default to CRLF; without repo-level
normalization an edit becomes a whole-file phantom diff (583-line
'change' observed today from one 2-line edit), string-match patch
tooling breaks on invisible \r, and review is polluted. Extend the
existing LF rules (shell/Docker) to every source/text extension:
normalize at check-in AND check out as LF so working trees match the
index on all platforms. *.ps1 stays CRLF (PowerShell 5.1 tooling).
git add --renormalize: exactly one tracked file had mixed endings
(tests/tools/test_windows_agent_loop_papercuts.py) — normalized here,
so no phantom diffs land on anyone's next commit.
The command wrapper prints the cwd marker after the command returns. A
killed or timed-out command emits no marker, so ``env.cwd`` still holds the
directory of the last command to FINISH. One local environment serves every
session, because ``_resolve_container_task_id`` collapses cwd-only overrides
to ``"default"``. That leftover directory is therefore routinely another
session's.
The post-command dual-write copied ``env.cwd`` into the interrupted session's
durable record. Every later command in that session then ran in the foreign
directory, and the cwd echo told the model it had moved there. A desktop chat
silently re-homed into a worktree that another chat had opened.
Report the observation instead of inferring it. The marker parse now sets
``result["cwd_observed"]``, and both the record write and the echo read that
flag. The local override clears the flag when it rolls back a path that does
not exist, because the restored value is also unobserved. When a command
reports no cwd, the session keeps the directory it already had.
This needs no second session to be wrong: a lone session that interrupts a
command re-adopts a stale value too. A second session only makes the wrong
directory belong to somebody else.
The same class of write exists in the file-tools rescue for a reaped
environment (#26211). That rescue copied the cached snapshot of the shared
``env.cwd`` into the session record. The rescue is now fill-only: it writes
the snapshot when the session has no record, and it never overwrites a
record that the session wrote for itself.
The tests drive ``terminal_tool`` itself through an interrupt, not a copy of
its gate. Review found that a revert of either call site passed the first
version of the tests. Each gate now has a test that fails when the gate is
removed (verified by mutation).
Two exact-dict assertions in the Vercel sandbox tests now assert the two
fields they care about, so a new result key does not fail them.
Spill files (terminal overflow, hook context, web_extract full text,
subagent summaries) were written with plain open()/write_text into
predictable directories. A pre-planted symlink at any of those paths
redirected the write onto an arbitrary user-owned file, and raw
pre-redaction terminal/hook spills landed world-readable under the
default umask.
New tools/spill_safety.py helpers create files with
O_CREAT|O_EXCL|O_NOFOLLOW (a link-shaped path fails the write instead of
following it) and overwrite via lstat-checked unlink + exclusive
re-create, so even the redaction rewrite cannot be diverted. Private
tier (0o700 dir / 0o600 file) covers raw terminal and hook spills;
cache/web and cache/delegation keep umask perms because those dirs are
bind-mounted into remote backends that must read them.
Pattern borrowed from DeepSeek Harness dsh-spill-local (MIT):
private root + exclusive owner-only opens for spill artifacts.
Salvage of #37865 by @verybigdog. Adds delivery_mode (notify / notify+wake / wake)
on kanban notify subscriptions, persists chat_type + user_id_alt so a woken turn
reconstructs the creator's real session key, inherits the return path to child
tasks, and keeps wake out of the model-exposed send_message schema.
Original commits were authored under a local placeholder identity
(hermes-agent@users.noreply.local); re-attributed to the contributor's
public email.
delegate_task gains a control plane: action='list' / 'steer' / 'stop'
let the parent agent see, redirect, and early-stop its own running
subagents mid-flight — the model-facing counterpart of the TUI's
delegation.pause / subagent.interrupt / subagent.steer RPCs.
- action='list': live children of this conversation's spawn tree
(ids, goal, status, running_seconds, accepting_steer, live
transcript path). Ownership is enforced via a _delegate_parent_ref
weakref chain stamped at child build time, so a conversation can
only control its own descendants, never a sibling tree.
- action='steer': queues text into a running child via the existing
steer_subagent() registry path (delivered at the child's next tool
boundary; missed steers surface as missed_steer in the completion).
- action='stop': interrupt_subagent() — child stops at its next
iteration boundary, partial result still re-enters as a completion.
- Spawn dispatch response now includes subagent_ids + control hint.
- Control actions run synchronously (never backgrounded) and bypass
the spawn pause gate and depth limit; they also never consume the
per-turn subagent spawn cap, and remain usable once the cap is hit
(that is when stop matters most).
- Small-model robustness (found live with gpt-5.4-mini on Nous
Portal): tasks=[] alongside goal no longer trips the "Batch mode
requires at least 2 tasks" gate — treated as single-goal.
- CLI display: control calls render as "steer sa-…" / "list" instead
of an empty goal.
Live-tested E2E on Nous Portal (fable-5 + gpt-5.4-mini): full
spawn→list→steer→stop cycle, plus a steer-efficacy run where the
child acked the steer mid-essay and switched topics before finishing.
check_subprocess_stdin.py already had a full-repo-scan pytest wrapper
(test_subprocess_stdin_guard.py), so a plain pytest run catches a
regression there without anyone remembering to run the script by
hand. check-windows-footguns.py had no equivalent (only a narrow
single-rule test existed), which is why the bare os.killpg/
signal.SIGKILL regression in the npx-agent-browser hardening commit
shipped past local testing and was only caught by CI running the
script directly. New test_windows_footguns_full_repo_scan.py mirrors
the stdin guard's exact pattern to close that asymmetry.
Also adds direct coverage for _kill_process_tree's getattr fallback
when os.killpg is missing, and asserts warm_agent_browser_npx_cache's
Popen call passes stdin=subprocess.DEVNULL as a literal argument.
Full rewrite of test_browser_npx_warmup.py for the Popen-based
credential-scrubbing, PATH-propagation, and process-tree-kill rework:
argv shape, env scrubbing, PATH merge for managed-only npx, POSIX
process-group creation, Windows CREATE_NEW_PROCESS_GROUP, whole-tree
kill (not just the PID) on timeout with a bounded post-kill drain, and
_kill_process_tree's own POSIX/Windows/failure paths directly.
Also fixes test_windows_subprocess_no_window_flags.py's matching
regression test, which still mocked subprocess.run and a shutil.which
signature that didn't accept the path= kwarg _resolve_npx_bin's
extended-path rung now passes; its creationflags assertion becomes a
bitwise check since Windows now ORs CREATE_NEW_PROCESS_GROUP in
alongside the console-hiding flag.
- --ignore-scripts on every real npx agent-browser invocation.
AGENT_BROWSER_NPX_SPEC is a floating ^0.26.0 range, not an exact
pin, and none of these sites passed it (unlike install.sh/
install.ps1's own npm install of the same package). Verified against
the real CLI: `npx --ignore-scripts --prefer-offline -y
"agent-browser@^0.26.0" --version` resolves cleanly on npm
11.19.0/node 26.
- _resolve_npx_bin() now checks the Hermes-managed/extended search
before a bare ambient PATH lookup, validating each candidate with
node_tool_runnable before trusting it — a bare PATH-first lookup let
a broken system npx shadow a healthy managed one with no recovery.
- warm_agent_browser_npx_cache() now runs a credential-scrubbed,
PATH-propagated environment (matching every other agent-browser
subprocess spawn) instead of inheriting the full parent environment
including every provider/gateway credential Hermes holds, and kills
the whole process tree (not just the top-level npx PID) on timeout
via the new _kill_process_tree helper, since a surviving descendant
can otherwise hold a capture pipe open past the nominal deadline.
_browser_available()'s npx rung was missing the bare-npx-on-Termux
guard its sibling probes (dep_ensure, nous_subscription) already
apply, so it could report the browser probe available on Termux when
local mode would actually reject the bare npx fallback and fail on
first use.
Also adds argv-level coverage for the two real npx launch sites
(_run_browser_command, _run_chrome_fallback_command) and an
end-to-end test proving _find_agent_browser's lazy-install fallback
and ensure_dependency("browser")'s npx check terminate without
recursion.
Git-clone installs resolving agent-browser via bare npx floated latest
with no integrity check, while install.sh/install.ps1 installs stayed
pinned to ^0.26.0. Pin the npx spec to match. Also extract the
"npx agent-browser" sentinel comparison (6 call sites across two
packages) into a named constant/predicate, fix a PATH-priority
inversion where a broken system npx could shadow a healthy
Hermes-managed one at the two real npx launch sites, and stop
`hermes doctor --fix` from counting a bonus npx cache warm as a fixed
issue on an otherwise-healthy run.
_find_agent_browser's extended-PATH branch now calls
shutil.which(name, path=extended_path), which broke two
post_setup_gating tests mocking shutil.which with name-only lambdas.
Update those mocks and two similarly-shaped chromium test mocks that
were latent landmines, and add coverage for cascade branches (local
node_modules/.bin, validate=False paths, and
_agent_browser_candidate_present) that had none.
Teknium