ENG-1039 fix(harness): the authoring child is never captured or sensed (v0.76.1)

plugins/memhub-staging/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "memhub-staging",
   "description": "STAGING build of the MemHub plugin \u2014 identical behavior to `memhub` but pointed at the staging backend (api.staging.memhub.xtrace.ai) for MemHub developers iterating on the service. Skills, hooks, and scripts are shared with `memhub` (symlinked), so the two never drift; only the backend URL and OAuth client differ. Install this instead of `memhub` \u2014 never both (both register an MCP server named `memhub`). Spec workflows: spec-work guides implementation, spec-check freshly reviews changes, and spec-maintain offers local/cloud bootstrap and reviewable Git or Brain proposals through the shared spec entry point.",
-  "version": "0.76.0",
+  "version": "0.76.1",
   "license": "Apache-2.0",
   "hooks": "./hooks/claude-hooks.json",
   "author": {

plugins/memhub-staging/.codex-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "memhub-staging",
   "description": "MemHub staging for Codex: team memory and Rulebook hooks. Use the setup skill to verify the active hook route and credential. Repository shell commands in projectless tasks must include an explicit cd prefix when the host omits workdir. Spec workflows: spec-work guides implementation, spec-check freshly reviews changes, and spec-maintain offers local/cloud bootstrap and reviewable Git or Brain proposals through the shared spec entry point.",
-  "version": "0.76.0",
+  "version": "0.76.1",
   "license": "Apache-2.0",
   "author": {
     "name": "XTrace",

plugins/memhub-staging/.mcp.json

@@ -2,7 +2,7 @@
   "mcpServers": {
     "memhub": {
       "type": "http",
-      "url": "https://api.staging.memhub.xtrace.ai/mcp-server/mcp?memhub_plugin_version=0.76.0",
+      "url": "https://api.staging.memhub.xtrace.ai/mcp-server/mcp?memhub_plugin_version=0.76.1",
       "auth": {
         "CLIENT_ID": "mYTjrWldX9ZFGtDES3hQDEHSis9gIjiq"
       },

plugins/memhub/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "memhub",
   "description": "Auto-capture Claude Code sessions into MemHub team memory. A Stop hook ships each turn as it happens \u2014 sending only the transcript bytes written since the last successful flush, so a session is captured even if it never reaches a clean exit \u2014 alongside flushes on commit/PR events (PostToolUse hooks) and a SessionEnd backstop. The memhub MCP runs tool-aware (agentic) extraction of facts, episodes, and artifacts with watermark-based delta dedup, batching extraction so per-turn capture doesn't fragment episodes. A PreToolUse hook surfaces situated team directives (lessons/procedures) before each Edit/Write/Bash by firing the memhub recall_directives symbol-tripwire on the in-flight call and injecting any hits as context (a client-side precision gate drops directives whose triggers don't concretely match the call, e.g. an over-broad repo-name trigger). Includes skills for: plugin install/health (setup), plugin authentication with its own hook credential (login), repo brain creation and seeding (onboard), terminal artifact uploads (save-artifact), on-demand session import (import-session), team-memory recall (search-memory), teammate session handoff (handoff-session), git-authored spec development with ownership frontmatter (spec), Rulebook rule authoring (create-rule), rules proposed from CLAUDE.md and past sessions in one run (start-rulebook), and PR babysitting (pr-babysit) \u2014 a hook arms a self-paced loop after `gh pr create` that fixes review-bot findings and saves the fixing process to the repo's agent brain. Rules live in RULEBOOKS \u2014 containers with their own membership, so a rule reaches exactly the people its book binds, and one person can be bound by several (their org's book plus their team's): the authoring skills resolve which book a rule lands in and offer to create one when there is none, the hooks cache every book that binds you, and when two books fire on one call the wider book's rule is the one the per-call cap keeps. A PostToolUse hook reminds authors when an edited file belongs to a git-authored spec. Spec ownership frontmatter replaces the retired artifact map; the backend maintains read-only mirrors and opens bootstrap or audit PRs. Sessions are named with the title their own host shows \u2014 Claude Code's generated title, or on Codex the thread_name Codex generated (from the rollout, else ~/.codex/session_index.jsonl), passed through verbatim so MemHub's sessions list matches the editor's; a session its host never named falls back to a title derived from its first prompt \u2014 and route into the repo's own agent brain via a per-user room cache (~/.config/memhub-plugin/rooms.json, never written into the repo) \u2014 resolved once by /memhub:onboard and read by every writer, including the two automatic capture paths, so team memory lands in the repo's room instead of personal memory. Session \u2194 PR linking: after a call that addresses GitHub (`gh pr \u2026`, a `curl`/`gh api` REST request, or a GitHub MCP tool) whose output names exactly one pull request, a PostToolUse hook asks the backend one question and injects one instruction \u2014 a session that ran `gh pr create` \u2014 or the GitHub MCP create tool \u2014 links itself unconditionally (opening it is work the session did, and a PR has many sessions), while every other GitHub call, a hand-rolled `curl` POST included, leaves the authorship judgment to the agent, and an org with no GitHub integration is told once that connecting it is what links sessions to shipped code. The hook is stateless apart from one short-lived negative answer (an enabled org with GitHub disconnected, cached 30 minutes per credential, and never inferred from a reply that merely says the feature is off) and degrades to silence on every failure. Two skills complete it: link-pr (link this or a named session by hand \u2014 also the answer for a PR opened by a script or CI helper, which is deliberately not detected) and find-contributing-sessions (scan this machine's local session history for the sessions that wrote a PR's code, rank the candidates by the evidence that matched, and link the ones you approve). Every rulebook fire is now disclosed to the user in a fixed shape on two channels: the hook's own terminal line leads with `\ud83d\udccf Rule fired: <the rule>` (`\u26d4\ufe0f` when a gate actually blocked the call) above the detail line it already showed, and the agent is told to echo that same byte-identical line at the top of its reply so the fire reaches the transcript everything downstream reads. Session start now says what rules ARE \u2014 standing instructions from teammates carrying CLAUDE.md's weight \u2014 before listing them. The agent records ONE work type for a pull request it links (feat, fix, chore, docs, perf, refactor, other), and only when the PR has none yet \u2014 the first label is permanent, and asking again would cost the link, not just the type. Spec workflows: spec-work guides implementation, spec-check freshly reviews changes, and spec-maintain offers local/cloud bootstrap and reviewable Git or Brain proposals through the shared spec entry point.",
-  "version": "0.76.0",
+  "version": "0.76.1",
   "license": "Apache-2.0",
   "hooks": "./hooks/claude-hooks.json",
   "author": {

plugins/memhub/.codex-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "memhub",
   "description": "XTrace MemHub team memory in Codex: automatic session capture, situated directive recall, artifact sync, plus skills for setup, login, onboarding, artifact upload, session import, search, handoff, spec-driven development, Rulebook rule authoring (create-rule) and a team's first Rulebook — tested starter rules fitted to the repo, and rules proposed from CLAUDE.md + past sessions (start-rulebook), and PR babysitting. A rule lives in a RULEBOOK \u2014 a container with its own membership, so it reaches exactly the people that book binds; the authoring skills resolve which book it lands in and offer to create one when there is none. Run memhub:setup to verify hook routing and authentication. Current desktop builds support bundled hooks; older hosts need the user bridge. Bundled handlers defer to matching installed user bridge handlers, which require trust. Codex's own threads are not captured as your sessions: spawned subagents, guardian action-reviews and memory consolidation are recognised from the rollout's thread_source and skipped by name, while every other kind \u2014 including a product surface we have not seen, since Codex's ThreadSource type is open-ended \u2014 is captured, because refusing an unknown kind would silently and unrecoverably drop real work. Every rule fire is reported under the same namespaced session id capture uploads, so a fire is linked to the Codex session it fired in. Session \u2194 PR linking: after a call that addresses GitHub (`gh pr \u2026`, a `curl`/`gh api` REST request, or a GitHub MCP tool) whose output names exactly one pull request, a PostToolUse hook asks the backend one question and injects one instruction \u2014 a session that ran `gh pr create` \u2014 or the GitHub MCP create tool \u2014 links itself unconditionally (opening it is work the session did, and a PR has many sessions), while every other GitHub call, a hand-rolled `curl` POST included, leaves the authorship judgment to the agent, and an org with no GitHub integration is told once that connecting it is what links sessions to shipped code. The hook is stateless apart from one short-lived negative answer (an enabled org with GitHub disconnected, cached 30 minutes per credential, and never inferred from a reply that merely says the feature is off) and degrades to silence on every failure. Two skills complete it: link-pr (link this or a named session by hand \u2014 also the answer for a PR opened by a script or CI helper, which is deliberately not detected) and find-contributing-sessions (scan this machine's local session history for the sessions that wrote a PR's code, rank the candidates by the evidence that matched, and link the ones you approve). The agent records ONE work type for a pull request it links (feat, fix, chore, docs, perf, refactor, other), and only when the PR has none yet \u2014 the first label is permanent, and asking again would cost the link, not just the type. Spec workflows: spec-work guides implementation, spec-check freshly reviews changes, and spec-maintain offers local/cloud bootstrap and reviewable Git or Brain proposals through the shared spec entry point.",
-  "version": "0.76.0",
+  "version": "0.76.1",
   "license": "Apache-2.0",
   "author": {
     "name": "XTrace",

plugins/memhub/.cursor-plugin/plugin.json

@@ -2,7 +2,7 @@
   "name": "memhub",
   "displayName": "MemHub",
   "description": "XTrace MemHub team memory in Cursor: search_memory / save_artifact / import_conversation tools plus skills for setup, login, onboarding, artifact upload, session import, recall, handoff, spec-driven development, Rulebook rule authoring (create-rule) and a team's first Rulebook — tested starter rules fitted to the repo, and rules proposed from CLAUDE.md + past sessions (start-rulebook), and PR babysitting. A rule lives in a RULEBOOK \u2014 a container with its own membership, so it reaches exactly the people that book binds; the authoring skills resolve which book it lands in and offer to create one when there is none. Sessions are captured automatically. Session \u2194 PR linking ships as skills on Cursor: link-pr and find-contributing-sessions. Cursor's shell hooks are observational \u2014 `afterShellExecution` defines no reply the agent can see \u2014 so the automatic post-`gh pr create` link that Claude Code and Codex get is not available here. The agent records ONE work type for a pull request it links (feat, fix, chore, docs, perf, refactor, other), and only when the PR has none yet \u2014 the first label is permanent, and asking again would cost the link, not just the type. Spec workflows: spec-work guides implementation, spec-check freshly reviews changes, and spec-maintain offers local/cloud bootstrap and reviewable Git or Brain proposals through the shared spec entry point.",
-  "version": "0.76.0",
+  "version": "0.76.1",
   "license": "Apache-2.0",
   "author": {
     "name": "XTrace"

plugins/memhub/.mcp.json

@@ -2,7 +2,7 @@
   "mcpServers": {
     "memhub": {
       "type": "http",
-      "url": "https://api.memhub.xtrace.ai/mcp-server/mcp?memhub_plugin_version=0.76.0",
+      "url": "https://api.memhub.xtrace.ai/mcp-server/mcp?memhub_plugin_version=0.76.1",
       "auth": {
         "CLIENT_ID": "xHoQkYd7uNUfaNX6Tyv143e1Ev7u3XS0"
       },

plugins/memhub/mcp.json

@@ -3,7 +3,7 @@
   "mcpServers": {
     "memhub": {
       "type": "streamable-http",
-      "url": "https://api.memhub.xtrace.ai/mcp-server/mcp?memhub_plugin_version=0.76.0"
+      "url": "https://api.memhub.xtrace.ai/mcp-server/mcp?memhub_plugin_version=0.76.1"
     }
   }
 }

plugins/memhub/plugin.json

@@ -2,7 +2,7 @@
   "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
   "name": "memhub",
   "description": "XTrace MemHub team memory: search_memory / save_artifact / import_conversation MCP tools plus skills for setup, login, onboarding, artifact upload, session import, team-memory recall, session handoff, spec-driven development, Rulebook rule authoring (create-rule) and a team's first Rulebook — tested starter rules fitted to the repo, and rules proposed from CLAUDE.md + past sessions (start-rulebook), and PR babysitting. A rule lives in a RULEBOOK \u2014 a container with its own membership, so it reaches exactly the people that book binds; the authoring skills resolve which book it lands in and offer to create one when there is none. Session auto-capture ships through the host-native plugin layer (hooks are outside the Agent Plugins spec). Session \u2194 PR linking: after a call that addresses GitHub (`gh pr \u2026`, a `curl`/`gh api` REST request, or a GitHub MCP tool) whose output names exactly one pull request, a PostToolUse hook asks the backend one question and injects one instruction \u2014 a session that ran `gh pr create` \u2014 or the GitHub MCP create tool \u2014 links itself unconditionally (opening it is work the session did, and a PR has many sessions), while every other GitHub call, a hand-rolled `curl` POST included, leaves the authorship judgment to the agent, and an org with no GitHub integration is told once that connecting it is what links sessions to shipped code. The hook is stateless apart from one short-lived negative answer (an enabled org with GitHub disconnected, cached 30 minutes per credential, and never inferred from a reply that merely says the feature is off) and degrades to silence on every failure. Two skills complete it: link-pr (link this or a named session by hand \u2014 also the answer for a PR opened by a script or CI helper, which is deliberately not detected) and find-contributing-sessions (scan this machine's local session history for the sessions that wrote a PR's code, rank the candidates by the evidence that matched, and link the ones you approve). The agent records ONE work type for a pull request it links (feat, fix, chore, docs, perf, refactor, other), and only when the PR has none yet \u2014 the first label is permanent, and asking again would cost the link, not just the type. Spec workflows: spec-work guides implementation, spec-check freshly reviews changes, and spec-maintain offers local/cloud bootstrap and reviewable Git or Brain proposals through the shared spec entry point.",
-  "version": "0.76.0",
+  "version": "0.76.1",
   "license": "Apache-2.0",
   "author": {
     "name": "XTrace",

plugins/memhub/scripts/flush_session.py

@@ -65,6 +65,7 @@
 from transcript_filter import (  # noqa: E402
     drop_command_wrappers,
     elide_oversized_tool_results,
+    is_harness_child,
 )
 
 
@@ -591,6 +592,8 @@ def _auth_required(e: BaseException) -> bool:
 
 
 def main() -> int:
+    if is_harness_child():
+        return 0  # the harness's forked copy of a session; see is_harness_child
     # Bound BEFORE the try, because the handler reads them. Assigned inside it,
     # any failure earlier in the block — a malformed stdin payload is enough —
     # would make the handler itself raise NameError, and this script's one hard

plugins/memhub/scripts/flush_turn.py

@@ -72,6 +72,7 @@
 from transcript_filter import (  # noqa: E402
     elide_oversized_tool_results,
     is_command_wrapper,
+    is_harness_child,
 )
 
 # All at module scope now. These used to be deferred into :func:`_flush`
@@ -1075,6 +1076,8 @@ class _NoCredential(RuntimeError):
 
 
 def main() -> int:
+    if is_harness_child():
+        return 0  # the harness's forked copy of a session; see is_harness_child
     lock_fd: int | None = None
     # Bound BEFORE the try so the handler can always write a breadcrumb. Reading
     # stdin or parsing it is itself a failure path, and a NameError raised from

plugins/memhub/scripts/harness_extract.py

@@ -46,6 +46,7 @@
 HERE = Path(__file__).resolve().parent
 
 FLAG = "MEMHUB_HARNESS_EXTRACT"
+CHILD_FLAG = "MEMHUB_HARNESS_CHILD"   # set by harness_stop.run_author
 _ON = ("1", "on", "true", "yes")
 
 CLASSIFY_PATH = "/v1/team/rulebook/harness/classify"
@@ -71,6 +72,14 @@ def extract_enabled(environ=None) -> bool:
     ON; it went back to opt-in so an install never starts spending that
     without being asked. Unset, blank and unrecognised values are all off."""
     env = os.environ if environ is None else environ
+    if str(env.get(CHILD_FLAG, "")).strip().lower() in _ON:
+        # An authoring child is never sensed, whatever FLAG says. `run_author`
+        # sets FLAG=0 for it, but Claude Code applies a settings.json `env`
+        # OVER the environment a process inherits, and settings is where an
+        # install opts in with FLAG=1. So every opted-in install re-armed the
+        # lane in every child: the child's own turns were classified and
+        # drained, and one fork spawned the next.
+        return False
     return str(env.get(FLAG, "")).strip().lower() in _ON
 
 

plugins/memhub/scripts/harness_stop.py

@@ -689,8 +689,14 @@ def run_author(session: str, moment: dict, repo: str, mcp_cfg: Path) -> tuple[st
         return "failed", {"detail": "the moment carries no session id to resume"}
     with tempfile.TemporaryDirectory(prefix="memhub-drain-") as scratch:
         env = dict(os.environ,
-                   MEMHUB_HARNESS_CHILD="1",       # its hooks stay silent
-                   MEMHUB_HARNESS_EXTRACT="0",     # and it senses nothing
+                   # Its capture and harness lanes stay silent: the forked
+                   # transcript is a copy of the person's, and must neither
+                   # ship as a second conversation nor be sensed again. The
+                   # two lanes read this, not EXTRACT below, because a
+                   # settings.json `env` overrides what the child inherits.
+                   # Its rulebook hook still runs, for the forward test.
+                   MEMHUB_HARNESS_CHILD="1",
+                   MEMHUB_HARNESS_EXTRACT="0",
                    # its forward test arms a candidate in ITS OWN base
                    MEMHUB_RULEBOOK_BASE=os.path.join(scratch, "rulebook"))
         argv = [claude_bin(), "-p", author_prompt(session, moment, repo),

plugins/memhub/scripts/rulebook_hook.py

@@ -3375,7 +3375,10 @@ def harness_extract_on(environ=None):
     """Default OFF, matching `harness_extract.extract_enabled` — the two gates
     are one switch and must not disagree about what it says."""
     env = os.environ if environ is None else environ
-    return str(env.get(HARNESS_FLAG, "")).strip().lower() in ("1", "on", "true", "yes")
+    on = ("1", "on", "true", "yes")
+    if str(env.get("MEMHUB_HARNESS_CHILD", "")).strip().lower() in on:
+        return False          # an authoring child is never sensed (see extract_enabled)
+    return str(env.get(HARNESS_FLAG, "")).strip().lower() in on
 
 
 def arcs_path(session_id):