Merge current PR 15 into distributed worker pool

# Conflicts:
#	testing/quality_contract.json

dockerfiles/Dockerfile.hermes-agent

@@ -1552,8 +1552,15 @@ COPY dockerfiles/patch_hermes_decomposition_safety.py /tmp/patch_hermes_decompos
 COPY dockerfiles/hermes_execution_regression_support.py /tmp/hermes_execution_regression_support.py
 COPY dockerfiles/hermes_run_safety_regression.py /tmp/hermes_run_safety_regression.py
 COPY dockerfiles/hermes_decomposition_safety_regression.py /tmp/hermes_decomposition_safety_regression.py
+COPY dockerfiles/hermes_lane_compatibility_regression.py /tmp/hermes_lane_compatibility_regression.py
 COPY services/hermes/scripts/cli_lane_*.py /tmp/hermes-lane-regression/
-RUN /opt/hermes/.venv/bin/python /tmp/patch-hermes-execution-safety.py \
+RUN HERMES_CLI_LANE_SOURCE=/tmp/hermes-lane-regression \
+        HERMES_COMPATIBILITY_MODE=legacy \
+        /opt/hermes/.venv/bin/python /tmp/hermes_lane_compatibility_regression.py \
+    && /opt/hermes/.venv/bin/python /tmp/patch-hermes-execution-safety.py \
+    && HERMES_CLI_LANE_SOURCE=/tmp/hermes-lane-regression \
+        HERMES_COMPATIBILITY_MODE=patched \
+        /opt/hermes/.venv/bin/python /tmp/hermes_lane_compatibility_regression.py \
     && HERMES_CLI_LANE_SOURCE=/tmp/hermes-lane-regression \
         /opt/hermes/.venv/bin/python /tmp/hermes-execution-safety-regression.py \
     && rm /tmp/patch-hermes-execution-safety.py \
@@ -1564,6 +1571,7 @@ RUN /opt/hermes/.venv/bin/python /tmp/patch-hermes-execution-safety.py \
         /tmp/hermes_execution_regression_support.py \
         /tmp/hermes_run_safety_regression.py \
         /tmp/hermes_decomposition_safety_regression.py \
+        /tmp/hermes_lane_compatibility_regression.py \
     && find /tmp/hermes-lane-regression -depth -delete
 
 COPY dockerfiles/hermes-session-migrate.py /opt/hermes/bin/hermes-session-migrate

dockerfiles/Dockerfile.hermes-agent.dockerignore

@@ -13,6 +13,7 @@
 !dockerfiles/hermes_execution_regression_support.py
 !dockerfiles/hermes_run_safety_regression.py
 !dockerfiles/hermes_decomposition_safety_regression.py
+!dockerfiles/hermes_lane_compatibility_regression.py
 !services/
 !services/hermes/
 !services/hermes/scripts/

dockerfiles/hermes_lane_compatibility_regression.py

@@ -0,0 +1,120 @@
+"""Exercise mounted CLI scripts against the exact image Kanban API."""
+
+from __future__ import annotations
+
+import json
+import os
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+from unittest import mock
+
+
+_HOME = tempfile.TemporaryDirectory(prefix="hermes-lane-compatibility-")
+os.environ["HERMES_HOME"] = _HOME.name
+os.environ["HERMES_CLI_LANE_CONCURRENCY"] = "1"
+lane_source = Path(os.environ["HERMES_CLI_LANE_SOURCE"])
+sys.path.insert(0, str(lane_source))
+
+from cli_lane_capabilities import (  # noqa: E402
+    detect_kanban_capabilities,
+    initialize_kanban_capabilities,
+    runtime_health,
+)
+from cli_lane_config import TerminalIdentity  # noqa: E402
+from cli_lane_dispatch import recover_orphans  # noqa: E402
+from cli_lane_finalization import _finalize_document_db  # noqa: E402
+from hermes_cli import kanban_db  # noqa: E402
+
+
+class MountedLaneCompatibilityTests(unittest.TestCase):
+    """Verify safe behavior before and after the image API patch."""
+
+    def setUp(self) -> None:
+        self.connection = kanban_db.connect()
+
+    def tearDown(self) -> None:
+        self.connection.close()
+
+    @staticmethod
+    def _document(summary: str) -> dict:
+        return {
+            "result": json.dumps(
+                {
+                    "status": "completed",
+                    "summary": summary,
+                    "changed_files": [],
+                    "tests_run": ["mixed source compatibility"],
+                    "artifacts": [],
+                    "findings": [],
+                    "blockers": [],
+                },
+                sort_keys=True,
+            ),
+            "summary": summary,
+            "metadata": {"matrix": os.environ["HERMES_COMPATIBILITY_MODE"]},
+        }
+
+    def test_exact_image_api_matrix(self) -> None:
+        mode = os.environ["HERMES_COMPATIBILITY_MODE"]
+        capabilities = initialize_kanban_capabilities(kanban_db)
+        self.assertTrue(capabilities.exact_run_completion)
+        self.assertEqual(capabilities.ready, mode == "patched")
+        self.assertEqual(runtime_health()["state"], "ready" if mode == "patched" else "deferred")
+        self.assertLess(Path(_HOME.name, "cli-lanes/runtime-health.json").stat().st_size, 2048)
+
+    def test_current_active_run_completion_stays_safe(self) -> None:
+        task_id = kanban_db.create_task(self.connection, title="active accepted result")
+        self.assertIsNotNone(kanban_db.claim_task(self.connection, task_id))
+        run_id = kanban_db.get_task(self.connection, task_id).current_run_id
+        outcome = _finalize_document_db(
+            kanban_db,
+            TerminalIdentity("default", task_id, run_id, "pending"),
+            self._document("active result"),
+        )
+        self.assertEqual(outcome, "committed")
+        self.assertEqual(kanban_db.get_task(self.connection, task_id).status, "done")
+
+    def test_ended_run_replay_is_enabled_only_after_patch(self) -> None:
+        mode = os.environ["HERMES_COMPATIBILITY_MODE"]
+        task_id = kanban_db.create_task(self.connection, title="ended accepted result")
+        self.assertIsNotNone(kanban_db.claim_task(self.connection, task_id))
+        run_id = kanban_db.get_task(self.connection, task_id).current_run_id
+        self.assertTrue(
+            kanban_db.block_task(
+                self.connection,
+                task_id,
+                reason="simulate post-journal error",
+                expected_run_id=run_id,
+            )
+        )
+        outcome = _finalize_document_db(
+            kanban_db,
+            TerminalIdentity("default", task_id, run_id, "pending"),
+            self._document("ended result"),
+        )
+        self.assertEqual(outcome, "committed" if mode == "patched" else "deferred")
+
+    def test_old_reclaim_api_is_never_called_unguarded(self) -> None:
+        capabilities = detect_kanban_capabilities(kanban_db)
+        if capabilities.exact_run_reclaim:
+            self.skipTest("patched API exercises guarded reclaim in the exact-run suite")
+        with mock.patch.object(
+            kanban_db,
+            "reclaim_task",
+            side_effect=AssertionError("legacy unguarded reclaim called"),
+        ), mock.patch("cli_lane_dispatch.recover_pending_finalizations", return_value=0):
+            recover_orphans()
+
+
+def main() -> int:
+    """Run the compatibility matrix for the selected exact image source."""
+    result = unittest.TextTestRunner(verbosity=2).run(
+        unittest.defaultTestLoader.loadTestsFromTestCase(MountedLaneCompatibilityTests)
+    )
+    return 0 if result.wasSuccessful() else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

services/hermes/kustomization.yaml

@@ -66,6 +66,7 @@ configMapGenerator:
     namespace: hermes
     files:
       - cli_lane_board.py=scripts/cli_lane_board.py
+      - cli_lane_capabilities.py=scripts/cli_lane_capabilities.py
       - cli_lane_config.py=scripts/cli_lane_config.py
       - cli_lane_dispatch.py=scripts/cli_lane_dispatch.py
       - cli_lane_evidence.py=scripts/cli_lane_evidence.py
@@ -98,6 +99,7 @@ configMapGenerator:
       - claude=scripts/claude
       - claude_command_policy.py=scripts/claude_command_policy.py
       - cli_lane_board.py=scripts/cli_lane_board.py
+      - cli_lane_capabilities.py=scripts/cli_lane_capabilities.py
       - cli_lane_config.py=scripts/cli_lane_config.py
       - cli_lane_dispatch.py=scripts/cli_lane_dispatch.py
       - cli_lane_evidence.py=scripts/cli_lane_evidence.py

services/hermes/scripts/cli_lane_capabilities.py

@@ -0,0 +1,130 @@
+#!/usr/bin/env python3
+"""Detect and publish the Kanban API boundary required by CLI lanes."""
+
+from __future__ import annotations
+
+import inspect
+import sys
+from dataclasses import asdict, dataclass
+from pathlib import Path
+from typing import Any, Callable
+
+from cli_lane_config import STATE_ROOT, utc_now
+from cli_lane_files import atomic_json, load_json
+
+
+_CAPABILITIES: KanbanCapabilities | None = None
+_CAPABILITY_SOURCE: tuple[int, int] | None = None
+
+
+@dataclass(frozen=True)
+class KanbanCapabilities:
+    """Safety-relevant keyword support exposed by the image's Kanban DB."""
+
+    exact_run_completion: bool
+    ended_run_replay: bool
+    exact_run_reclaim: bool
+
+    @property
+    def ready(self) -> bool:
+        """Return whether dispatch and every recovery transition are safe."""
+        return (
+            self.exact_run_completion
+            and self.ended_run_replay
+            and self.exact_run_reclaim
+        )
+
+    @property
+    def deferred_features(self) -> tuple[str, ...]:
+        """List fixed, bounded capability names absent from the image API."""
+        missing = []
+        if not self.exact_run_completion:
+            missing.append("exact-run-completion")
+        if not self.ended_run_replay:
+            missing.append("ended-run-replay")
+        if not self.exact_run_reclaim:
+            missing.append("exact-run-reclaim")
+        return tuple(missing)
+
+
+def _explicit_keyword(function: Callable[..., Any], keyword: str) -> bool:
+    """Require an explicit keyword parameter rather than trusting ``**kwargs``."""
+    try:
+        parameter = inspect.signature(function).parameters.get(keyword)
+    except (TypeError, ValueError):
+        return False
+    return parameter is not None and parameter.kind in {
+        inspect.Parameter.POSITIONAL_OR_KEYWORD,
+        inspect.Parameter.KEYWORD_ONLY,
+    }
+
+
+def detect_kanban_capabilities(kanban_db: Any) -> KanbanCapabilities:
+    """Inspect the loaded image API without invoking a mutating DB operation."""
+    complete_task = getattr(kanban_db, "complete_task", None)
+    reclaim_task = getattr(kanban_db, "reclaim_task", None)
+    return KanbanCapabilities(
+        exact_run_completion=callable(complete_task)
+        and _explicit_keyword(complete_task, "expected_run_id"),
+        ended_run_replay=callable(complete_task)
+        and _explicit_keyword(complete_task, "replay_ended_run_id"),
+        exact_run_reclaim=callable(reclaim_task)
+        and _explicit_keyword(reclaim_task, "expected_run_id"),
+    )
+
+
+def _source_identity(kanban_db: Any) -> tuple[int, int]:
+    """Bind cached capability evidence to the two inspected callables."""
+    return (
+        id(getattr(kanban_db, "complete_task", None)),
+        id(getattr(kanban_db, "reclaim_task", None)),
+    )
+
+
+def _health_document(capabilities: KanbanCapabilities) -> dict[str, Any]:
+    """Return a bounded operator-readable compatibility health document."""
+    return {
+        "component": "cli-lane-runner",
+        "state": "ready" if capabilities.ready else "deferred",
+        "ready": capabilities.ready,
+        "active_run_completion_safe": capabilities.exact_run_completion,
+        "deferred_features": list(capabilities.deferred_features),
+        "capabilities": asdict(capabilities),
+        "observed_at": utc_now(),
+    }
+
+
+def initialize_kanban_capabilities(
+    kanban_db: Any,
+    *,
+    health_path: Path | None = None,
+) -> KanbanCapabilities:
+    """Detect startup compatibility and durably expose ready/deferred health."""
+    global _CAPABILITIES, _CAPABILITY_SOURCE
+    capabilities = detect_kanban_capabilities(kanban_db)
+    _CAPABILITIES = capabilities
+    _CAPABILITY_SOURCE = _source_identity(kanban_db)
+    destination = health_path or STATE_ROOT / "runtime-health.json"
+    destination.parent.mkdir(parents=True, exist_ok=True)
+    atomic_json(destination, _health_document(capabilities), 0o600)
+    if not capabilities.ready:
+        print(
+            "CLI lane safety compatibility deferred; missing image APIs: "
+            + ", ".join(capabilities.deferred_features),
+            file=sys.stderr,
+            flush=True,
+        )
+    return capabilities
+
+
+def kanban_capabilities(kanban_db: Any) -> KanbanCapabilities:
+    """Return startup evidence, redetecting only when the loaded API changes."""
+    if _CAPABILITIES is None or _source_identity(kanban_db) != _CAPABILITY_SOURCE:
+        return initialize_kanban_capabilities(kanban_db)
+    return _CAPABILITIES
+
+
+def runtime_health(path: Path | None = None) -> dict[str, Any]:
+    """Read the bounded health document for probes and operator diagnostics."""
+    document = load_json(path or STATE_ROOT / "runtime-health.json")
+    return document if isinstance(document, dict) else {}

services/hermes/scripts/cli_lane_dispatch.py

@@ -11,6 +11,7 @@ from collections.abc import Callable
 from typing import Any
 
 from cli_lane_board import _external, _record_board_access_error, _task_value
+from cli_lane_capabilities import initialize_kanban_capabilities, kanban_capabilities
 from cli_lane_config import (
     BOARD_CORRUPTION_ERRORS,
     DEFAULT_CLAIM_TTL,
@@ -52,6 +53,8 @@ def recover_orphans() -> None:
     from hermes_cli import kanban_db
 
     recover_pending_finalizations()
+    if not kanban_capabilities(kanban_db).exact_run_reclaim:
+        return
     try:
         boards = kanban_db.list_boards(include_archived=False)
     except Exception as error:
@@ -154,8 +157,11 @@ def claim_ready(
 
 def main() -> int:
     """Continuously bridge external Kanban lanes to provider CLIs."""
+    from hermes_cli import kanban_db
+
     RESULT_SCHEMA_PATH.parent.mkdir(parents=True, exist_ok=True)
     atomic_json(RESULT_SCHEMA_PATH, RESULT_SCHEMA, 0o644)
+    capabilities = initialize_kanban_capabilities(kanban_db)
     recover_orphans()
     workers = max(1, min(int(os.environ.get("HERMES_CLI_LANE_CONCURRENCY", "4")), 8))
     futures: dict[concurrent.futures.Future[None], tuple[str, str]] = {}
@@ -172,7 +178,11 @@ def main() -> int:
             maybe_gc_lane_artifacts()
             active = set(futures.values())
             try:
-                newly_claimed = claim_ready(active, workers - len(futures))
+                newly_claimed = (
+                    claim_ready(active, workers - len(futures))
+                    if capabilities.ready
+                    else []
+                )
                 BOARD_CORRUPTION_ERRORS.pop("board-registry", None)
             except Exception as error:
                 _record_board_access_error("board-registry", error)

services/hermes/scripts/cli_lane_evidence.py

@@ -4,6 +4,7 @@
 from __future__ import annotations
 
 import ctypes
+import contextlib
 import errno
 import hashlib
 import json
@@ -75,7 +76,7 @@ def _retire_terminal_entry(
         (authority_name or path.name).encode("utf-8")
     ).hexdigest()[:16]
     source_digest = hashlib.sha256(
-        f"{source_stat.st_dev:x}\0{source_stat.st_ino:x}".encode("utf-8")
+        f"{source_stat.st_dev:x}\0{source_stat.st_ino:x}".encode()
     ).hexdigest()[:16]
     for sequence in range(32):
         staging = f".retire.{path_digest}.{source_digest}.{sequence}"
@@ -157,15 +158,13 @@ def _write_json_noreplace(path: Path, value: dict[str, Any]) -> bool:
         if descriptor is not None:
             os.close(descriptor)
         if temporary_stat is not None:
-            try:
+            with contextlib.suppress(OSError):
                 _retire_terminal_entry(
                     Path(temporary),
                     temporary_stat,
                     board_descriptor=directory,
                     quarantine_descriptor=directory,
                 )
-            except OSError:
-                pass
         os.close(directory)
 
 def _terminal_document_digest(document: dict[str, Any]) -> str:

services/hermes/scripts/cli_lane_execution.py

@@ -3,6 +3,7 @@
 
 from __future__ import annotations
 
+import contextlib
 import json
 import sqlite3
 import time
@@ -98,7 +99,7 @@ def execute_claim(board: str, task_id: str) -> None:
                 return True
 
         def comment(body: str) -> None:
-            try:
+            with contextlib.suppress(OSError, sqlite3.Error):
                 _board_call(
                     kanban_db,
                     board,
@@ -109,10 +110,8 @@ def execute_claim(board: str, task_id: str) -> None:
                         body,
                     ),
                 )
-            except (OSError, sqlite3.Error):
-                # Route state is also written to the durable lane-state file;
-                # a later heartbeat or terminal result remains authoritative.
-                pass
+            # Route state is also written to the durable lane-state file;
+            # a later heartbeat or terminal result remains authoritative.
 
         try:
             previous_route = state.get("current_route")
@@ -395,15 +394,20 @@ def execute_claim(board: str, task_id: str) -> None:
                     reason = reason or str(structured.get("summary") or "")
                 if reason is None:
                     reason = result.output[-4000:]
+                failure_reason = reason or (
+                    f"{route.provider} worker failed with exit {result.returncode}"
+                )
+                failure_kind = (
+                    "transient" if result.capacity_failure else "capability"
+                )
                 _board_call(
                     kanban_db,
                     board,
-                    lambda fresh: kanban_db.block_task(
+                    lambda fresh, failure_reason=failure_reason, failure_kind=failure_kind: kanban_db.block_task(
                         fresh,
                         task_id,
-                        reason=reason
-                        or f"{route.provider} worker failed with exit {result.returncode}",
-                        kind="transient" if result.capacity_failure else "capability",
+                        reason=failure_reason,
+                        kind=failure_kind,
                         expected_run_id=run_id,
                     ),
                 )

services/hermes/scripts/cli_lane_files.py

@@ -3,6 +3,7 @@
 
 from __future__ import annotations
 
+import contextlib
 import json
 import os
 import re
@@ -36,10 +37,8 @@ def atomic_json(path: Path, value: dict[str, Any], mode: int = 0o600) -> None:
     finally:
         if descriptor is not None:
             os.close(descriptor)
-        try:
+        with contextlib.suppress(FileNotFoundError):
             temporary.unlink()
-        except FileNotFoundError:
-            pass
 
 def _fsync_directory(directory: Path) -> None:
     """Persist directory-entry changes after an atomic rename or quarantine."""

services/hermes/scripts/cli_lane_finalization.py

@@ -8,6 +8,7 @@ from pathlib import Path
 from typing import Any
 
 from cli_lane_board import _board_call, _external, _record_board_access_error, _task_value
+from cli_lane_capabilities import kanban_capabilities
 from cli_lane_config import (
     TerminalIdentity,
     TerminalRecoverySnapshot,
@@ -39,6 +40,8 @@ def _recover_exact_run(
     """Make an exact external run retryable after journal recovery fails."""
     if identity is None or canonical_run_id(identity.run_id) is None:
         return False
+    if not kanban_capabilities(kanban_db).exact_run_reclaim:
+        return False
 
     def operation(conn: Any) -> bool:
         task = kanban_db.get_task(conn, identity.task_id)
@@ -178,11 +181,15 @@ def _finalize_document_db(
         current_run_id = _task_value(task, "current_run_id", None)
         completion_guard: dict[str, int]
         if status == "running" and current_run_id == identity.run_id:
+            if not kanban_capabilities(kanban_db).exact_run_completion:
+                return "deferred"
             completion_guard = {"expected_run_id": identity.run_id}
         elif status in {"ready", "blocked", "triage"} and current_run_id is None:
             # The journal may have survived an older post-persistence error
             # path that ended its run. The patched DB verifies atomically that
             # this is still the latest ended run before allowing completion.
+            if not kanban_capabilities(kanban_db).ended_run_replay:
+                return "deferred"
             completion_guard = {"replay_ended_run_id": identity.run_id}
         else:
             return "stale"

services/hermes/scripts/cli_lane_provider.py

@@ -3,6 +3,7 @@
 
 from __future__ import annotations
 
+import contextlib
 import json
 import os
 import selectors
@@ -166,17 +167,13 @@ def _signal_worker_tree(
         if _process_identity_matches(pid, start_time):
             groups.add(process_group)
     for process_group in groups:
-        try:
+        with contextlib.suppress(ProcessLookupError):
             os.killpg(process_group, sig)
-        except ProcessLookupError:
-            pass
     for pid, (_, start_time) in descendants.items():
         if not _process_identity_matches(pid, start_time):
             continue
-        try:
+        with contextlib.suppress(ProcessLookupError):
             os.kill(pid, sig)
-        except ProcessLookupError:
-            pass
 
 def _terminate_worker_process(
     process: subprocess.Popen[str],
@@ -187,10 +184,8 @@ def _terminate_worker_process(
     descendants.update(_descendant_processes(process.pid))
     if process.poll() is None:
         _signal_worker_tree(process.pid, descendants, signal.SIGTERM)
-        try:
+        with contextlib.suppress(subprocess.TimeoutExpired):
             process.wait(timeout=10)
-        except subprocess.TimeoutExpired:
-            pass
 
     # Provider terminal tools create their own sessions, so killing only the
     # native CLI's process group leaves test/build subprocesses orphaned. The
@@ -357,10 +352,8 @@ def run_provider(
         file_result = load_json(result_file)
         if file_result.get("status") in cli_lane_goal.RESULT_STATUSES:
             result.structured = file_result
-            try:
+            with contextlib.suppress(OSError):
                 result_file.chmod(0o600)
-            except OSError:
-                pass
         return result
 
     atomic_json(state_file, state)

services/hermes/scripts/cli_lane_quarantine.py

@@ -3,6 +3,7 @@
 
 from __future__ import annotations
 
+import contextlib
 import hashlib
 import json
 import os
@@ -136,10 +137,8 @@ def _quarantine_terminal(
             quarantine_descriptor = os.dup(board_descriptor)
             quarantine_dir = board_dir
         else:
-            try:
+            with contextlib.suppress(FileExistsError):
                 os.mkdir("quarantine", 0o700, dir_fd=board_descriptor)
-            except FileExistsError:
-                pass
             quarantine_descriptor = os.open(
                 "quarantine",
                 board_flags,

services/hermes/scripts/cli_lane_runner.py

@@ -12,6 +12,14 @@ import subprocess
 import uuid
 
 import cli_lane_goal
+from cli_lane_capabilities import (
+    KanbanCapabilities,
+    _explicit_keyword,
+    detect_kanban_capabilities,
+    initialize_kanban_capabilities,
+    kanban_capabilities,
+    runtime_health,
+)
 from cli_lane_board import (
     _board_call,
     _external,

testing/quality_contract.json

@@ -39,6 +39,23 @@
     "services/hermes/scripts/node_account_hardening.py",
     "services/hermes/scripts/node_account_io.py",
     "services/hermes/scripts/stage_runtime_access.py",
+    "services/hermes/scripts/cli_lane_board.py",
+    "services/hermes/scripts/cli_lane_capabilities.py",
+    "services/hermes/scripts/cli_lane_config.py",
+    "services/hermes/scripts/cli_lane_dispatch.py",
+    "services/hermes/scripts/cli_lane_evidence.py",
+    "services/hermes/scripts/cli_lane_execution.py",
+    "services/hermes/scripts/cli_lane_files.py",
+    "services/hermes/scripts/cli_lane_finalization.py",
+    "services/hermes/scripts/cli_lane_goal.py",
+    "services/hermes/scripts/cli_lane_prompt.py",
+    "services/hermes/scripts/cli_lane_provider.py",
+    "services/hermes/scripts/cli_lane_quarantine.py",
+    "services/hermes/scripts/cli_lane_records.py",
+    "services/hermes/scripts/cli_lane_recovery.py",
+    "services/hermes/scripts/cli_lane_retention.py",
+    "services/hermes/scripts/cli_lane_routing.py",
+    "services/hermes/scripts/cli_lane_runner.py",
     "testing/__init__.py",
     "testing/quality_contract.py",
     "testing/quality_docs.py",
@@ -76,6 +93,23 @@
     "services/hermes/scripts/node_account_hardening.py",
     "services/hermes/scripts/node_account_io.py",
     "services/hermes/scripts/stage_runtime_access.py",
+    "services/hermes/scripts/cli_lane_board.py",
+    "services/hermes/scripts/cli_lane_capabilities.py",
+    "services/hermes/scripts/cli_lane_config.py",
+    "services/hermes/scripts/cli_lane_dispatch.py",
+    "services/hermes/scripts/cli_lane_evidence.py",
+    "services/hermes/scripts/cli_lane_execution.py",
+    "services/hermes/scripts/cli_lane_files.py",
+    "services/hermes/scripts/cli_lane_finalization.py",
+    "services/hermes/scripts/cli_lane_goal.py",
+    "services/hermes/scripts/cli_lane_prompt.py",
+    "services/hermes/scripts/cli_lane_provider.py",
+    "services/hermes/scripts/cli_lane_quarantine.py",
+    "services/hermes/scripts/cli_lane_records.py",
+    "services/hermes/scripts/cli_lane_recovery.py",
+    "services/hermes/scripts/cli_lane_retention.py",
+    "services/hermes/scripts/cli_lane_routing.py",
+    "services/hermes/scripts/cli_lane_runner.py",
     "testing/tests",
     "testing"
   ],
@@ -168,6 +202,7 @@
       "services/hermes/scripts/node_account_hardening.py",
       "services/hermes/scripts/node_account_io.py",
       "services/hermes/scripts/stage_runtime_access.py",
+      "services/hermes/scripts/cli_lane_*.py",
       "services/mailu/scripts/mailu_sync.py",
       "services/mailu/scripts/mailu_sync_listener.py"
     ],
@@ -232,6 +267,23 @@
       "services/hermes/scripts/execution_pool_scm.py",
       "services/hermes/scripts/execution_pool_server.py",
       "services/hermes/scripts/execution_pool_worker.py",
+      "services/hermes/scripts/cli_lane_board.py",
+      "services/hermes/scripts/cli_lane_capabilities.py",
+      "services/hermes/scripts/cli_lane_config.py",
+      "services/hermes/scripts/cli_lane_dispatch.py",
+      "services/hermes/scripts/cli_lane_evidence.py",
+      "services/hermes/scripts/cli_lane_execution.py",
+      "services/hermes/scripts/cli_lane_files.py",
+      "services/hermes/scripts/cli_lane_finalization.py",
+      "services/hermes/scripts/cli_lane_goal.py",
+      "services/hermes/scripts/cli_lane_prompt.py",
+      "services/hermes/scripts/cli_lane_provider.py",
+      "services/hermes/scripts/cli_lane_quarantine.py",
+      "services/hermes/scripts/cli_lane_records.py",
+      "services/hermes/scripts/cli_lane_recovery.py",
+      "services/hermes/scripts/cli_lane_retention.py",
+      "services/hermes/scripts/cli_lane_routing.py",
+      "services/hermes/scripts/cli_lane_runner.py",
       "testing/quality_coverage.py"
     ],
     "tracked_files": [
@@ -260,6 +312,23 @@
       "services/hermes/scripts/node_account_hardening.py",
       "services/hermes/scripts/node_account_io.py",
       "services/hermes/scripts/stage_runtime_access.py",
+      "services/hermes/scripts/cli_lane_board.py",
+      "services/hermes/scripts/cli_lane_capabilities.py",
+      "services/hermes/scripts/cli_lane_config.py",
+      "services/hermes/scripts/cli_lane_dispatch.py",
+      "services/hermes/scripts/cli_lane_evidence.py",
+      "services/hermes/scripts/cli_lane_execution.py",
+      "services/hermes/scripts/cli_lane_files.py",
+      "services/hermes/scripts/cli_lane_finalization.py",
+      "services/hermes/scripts/cli_lane_goal.py",
+      "services/hermes/scripts/cli_lane_prompt.py",
+      "services/hermes/scripts/cli_lane_provider.py",
+      "services/hermes/scripts/cli_lane_quarantine.py",
+      "services/hermes/scripts/cli_lane_records.py",
+      "services/hermes/scripts/cli_lane_recovery.py",
+      "services/hermes/scripts/cli_lane_retention.py",
+      "services/hermes/scripts/cli_lane_routing.py",
+      "services/hermes/scripts/cli_lane_runner.py",
       "testing/quality_contract.py",
       "testing/quality_docs.py",
       "testing/quality_hygiene.py",

testing/tests/conftest.py

@@ -0,0 +1,26 @@
+"""Shared pytest boundaries for repository automation tests."""
+
+from __future__ import annotations
+
+import sys
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def _patched_hermes_cli_db_contract(request, monkeypatch):
+    """Keep legacy lane test doubles focused on their original safety boundary."""
+    module_name = request.module.__name__.rsplit(".", 1)[-1]
+    if not module_name.startswith("test_hermes_cli_") or module_name.endswith(
+        "capabilities"
+    ):
+        return
+    capability_module = sys.modules.get("cli_lane_capabilities")
+    if capability_module is None:
+        return
+    safe = capability_module.KanbanCapabilities(True, True, True)
+    for name, module in tuple(sys.modules.items()):
+        if (
+            name == "cli_lane_runner" or name.startswith("cli_lane_")
+        ) and hasattr(module, "kanban_capabilities"):
+            monkeypatch.setattr(module, "kanban_capabilities", lambda _db: safe)

testing/tests/test_hermes_agent_layout.py

@@ -308,6 +308,35 @@ def test_cli_lane_domain_modules_are_all_mounted_with_the_runner():
     assert expected <= mounted
 
 
+def test_cli_lane_config_refresh_does_not_restart_active_work():
+    """Keep projected script refreshes separate from pod lifecycle changes."""
+    manifest = yaml.safe_load((HERMES / "kustomization.yaml").read_text())
+    coordinator = next(
+        item
+        for item in manifest["configMapGenerator"]
+        if item["name"] == "hermes-coordinator"
+    )
+    deployment = _agent_deployment()
+    lane = next(
+        item
+        for item in deployment["spec"]["template"]["spec"]["containers"]
+        if item["name"] == "cli-lane-runner"
+    )
+    mount = next(
+        item for item in lane["volumeMounts"] if item["name"] == "coordinator"
+    )
+
+    assert coordinator["options"]["disableNameSuffixHash"] is True
+    assert mount == {
+        "name": "coordinator",
+        "mountPath": "/opt/coordinator",
+        "readOnly": True,
+    }
+    assert "checksum/hermes-coordinator" not in deployment["spec"]["template"].get(
+        "metadata", {}
+    ).get("annotations", {})
+
+
 def test_agent_dashboard_reconnects_all_transient_websockets():
     dockerfile = (
         HERMES.parents[1] / "dockerfiles/Dockerfile.hermes-agent"

testing/tests/test_hermes_cli_capabilities.py

@@ -0,0 +1,272 @@
+"""Mixed-image capability gates for mounted Hermes CLI lane scripts."""
+
+from __future__ import annotations
+
+import json
+import sys
+from contextlib import nullcontext
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+
+from testing.tests.test_hermes_cli_support import _completed_result, lanes
+
+
+def _old_complete(
+    _conn,
+    _task_id,
+    *,
+    result=None,
+    summary=None,
+    metadata=None,
+    expected_run_id=None,
+):
+    return bool(result or summary or metadata or expected_run_id)
+
+
+def _new_complete(
+    _conn,
+    _task_id,
+    *,
+    result=None,
+    summary=None,
+    metadata=None,
+    expected_run_id=None,
+    replay_ended_run_id=None,
+):
+    return bool(result or summary or metadata or expected_run_id or replay_ended_run_id)
+
+
+def _old_reclaim(_conn, _task_id, *, reason, signal_fn=None):
+    return bool(reason or signal_fn)
+
+
+def _new_reclaim(
+    _conn,
+    _task_id,
+    *,
+    reason,
+    signal_fn=None,
+    expected_run_id=None,
+):
+    return bool(reason or signal_fn or expected_run_id)
+
+
+def _db(*, patched: bool):
+    return SimpleNamespace(
+        complete_task=_new_complete if patched else _old_complete,
+        reclaim_task=_new_reclaim if patched else _old_reclaim,
+    )
+
+
+def _terminal_document(run_id: int = 7) -> dict:
+    structured = _completed_result("accepted result")
+    return {
+        "board": "cassandra",
+        "task_id": "t_compat",
+        "expected_run_id": run_id,
+        "result": json.dumps(structured, sort_keys=True),
+        "summary": "accepted result",
+        "metadata": {},
+        "kanban_state": "pending",
+        "recorded_at": lanes.utc_now(),
+    }
+
+
+def test_capability_detection_requires_explicit_safety_keywords():
+    old = lanes.detect_kanban_capabilities(_db(patched=False))
+    new = lanes.detect_kanban_capabilities(_db(patched=True))
+
+    assert old.exact_run_completion is True
+    assert old.ended_run_replay is False
+    assert old.exact_run_reclaim is False
+    assert old.ready is False
+    assert old.deferred_features == ("ended-run-replay", "exact-run-reclaim")
+    assert new.ready is True
+    assert new.deferred_features == ()
+
+    variadic = SimpleNamespace(
+        complete_task=lambda *_args, **_kwargs: True,
+        reclaim_task=lambda *_args, **_kwargs: True,
+    )
+    assert lanes.detect_kanban_capabilities(variadic).ready is False
+    assert lanes._explicit_keyword(object(), "expected_run_id") is False
+
+
+def test_startup_health_moves_from_bounded_deferred_to_ready(
+    tmp_path: Path,
+    capsys,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "cli-lanes")
+    health = tmp_path / "runtime-health.json"
+    old = lanes.initialize_kanban_capabilities(_db(patched=False), health_path=health)
+    old_document = lanes.runtime_health(health)
+
+    assert old.ready is False
+    assert old_document["state"] == "deferred"
+    assert old_document["ready"] is False
+    assert old_document["active_run_completion_safe"] is True
+    assert old_document["deferred_features"] == [
+        "ended-run-replay",
+        "exact-run-reclaim",
+    ]
+    assert health.stat().st_size < 2048
+    assert health.stat().st_mode & 0o777 == 0o600
+    assert "compatibility deferred" in capsys.readouterr().err
+
+    new_db = _db(patched=True)
+    new = lanes.kanban_capabilities(new_db)
+    lanes.initialize_kanban_capabilities(new_db, health_path=health)
+    assert new.ready is True
+    assert lanes.runtime_health(health)["state"] == "ready"
+
+
+@pytest.mark.parametrize(
+    ("status", "run_id", "expected"),
+    [("running", 7, "committed"), ("blocked", None, "deferred")],
+)
+def test_old_image_completes_only_the_exact_active_run(
+    tmp_path: Path,
+    monkeypatch,
+    status: str,
+    run_id: int | None,
+    expected: str,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "cli-lanes")
+    task = SimpleNamespace(
+        id="t_compat",
+        status=status,
+        current_run_id=run_id,
+        completed_run_id=None,
+        result=None,
+        assignee="cli-auto",
+    )
+    calls = []
+
+    def complete(
+        _conn,
+        _task_id,
+        *,
+        result=None,
+        summary=None,
+        metadata=None,
+        expected_run_id=None,
+    ):
+        calls.append(expected_run_id)
+        task.status = "done"
+        task.current_run_id = None
+        task.completed_run_id = expected_run_id
+        task.result = result
+        return True
+
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: SimpleNamespace(close=lambda: None),
+        get_task=lambda _conn, _task_id: task,
+        complete_task=complete,
+        reclaim_task=_old_reclaim,
+    )
+    identity = lanes.TerminalIdentity("cassandra", "t_compat", 7, "pending")
+
+    outcome = lanes._finalize_document_db(db, identity, _terminal_document())
+
+    assert outcome == expected
+    assert calls == ([7] if status == "running" else [])
+    if expected == "deferred":
+        assert task.status == "blocked"
+
+
+def test_old_image_preserves_pending_and_prepared_journals(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "cli-lanes")
+    task = SimpleNamespace(
+        id="t_compat",
+        status="blocked",
+        current_run_id=None,
+        completed_run_id=None,
+        result=None,
+        assignee="cli-auto",
+    )
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: SimpleNamespace(close=lambda: None),
+        get_task=lambda _conn, _task_id: task,
+        complete_task=_old_complete,
+        reclaim_task=_old_reclaim,
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    pending, _record = lanes._write_terminal_record(
+        lanes.state_path("cassandra", "t_compat"),
+        board="cassandra",
+        task_id="t_compat",
+        run_id=7,
+        structured=_completed_result("accepted result"),
+        summary="accepted result",
+        metadata={},
+    )
+
+    assert lanes.recover_pending_finalizations() == 0
+    assert pending.exists()
+    assert len(list(pending.parent.glob("*.terminal.prepared-*.json"))) == 1
+    assert task.status == "blocked"
+
+
+def test_old_image_never_calls_unguarded_reclaim(tmp_path: Path, monkeypatch):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "cli-lanes")
+    task = SimpleNamespace(
+        id="t_running",
+        status="running",
+        current_run_id=11,
+        assignee="cli-auto",
+    )
+    calls = []
+
+    def reclaim(_conn, _task_id, *, reason, signal_fn=None):
+        calls.append((reason, signal_fn))
+        return True
+
+    db = SimpleNamespace(
+        complete_task=_old_complete,
+        reclaim_task=reclaim,
+        list_boards=lambda include_archived=False: [{"slug": "cassandra"}],
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: SimpleNamespace(close=lambda: None),
+        list_tasks=lambda _conn: [task],
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "recover_pending_finalizations", lambda: 0)
+
+    lanes.recover_orphans()
+
+    assert calls == []
+
+
+def test_main_detects_capabilities_before_startup_recovery(
+    tmp_path: Path,
+    monkeypatch,
+):
+    events = []
+    db = _db(patched=False)
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "RESULT_SCHEMA_PATH", tmp_path / "result.schema.json")
+    monkeypatch.setattr(
+        lanes,
+        "initialize_kanban_capabilities",
+        lambda candidate: events.append(("detect", candidate))
+        or lanes.KanbanCapabilities(True, False, False),
+    )
+
+    def stop_after_detection():
+        events.append(("recover", db))
+        raise RuntimeError("stop after startup boundary")
+
+    monkeypatch.setattr(lanes, "recover_orphans", stop_after_detection)
+
+    with pytest.raises(RuntimeError, match="startup boundary"):
+        lanes.main()
+
+    assert events == [("detect", db), ("recover", db)]

testing/tests/test_hermes_cli_dispatch_runtime.py

@@ -0,0 +1,197 @@
+"""Dispatcher startup, degraded-board, and worker-loop regressions."""
+
+from __future__ import annotations
+
+import sys
+from contextlib import nullcontext
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+
+from testing.tests.test_hermes_cli_support import lanes
+
+
+def test_board_slug_and_connection_failure_paths(monkeypatch):
+    assert lanes._board_slug(SimpleNamespace(slug="cassandra")) == "cassandra"
+    assert lanes._board_slug(SimpleNamespace(id="fallback")) == "fallback"
+    failures = []
+    monkeypatch.setattr(
+        lanes,
+        "_record_board_access_error",
+        lambda board, error: failures.append((board, str(error))),
+    )
+    db = SimpleNamespace(
+        connect=lambda **_kwargs: (_ for _ in ()).throw(OSError("offline"))
+    )
+    assert lanes._connect_healthy_board(db, "broken") is None
+    assert failures == [("broken", "offline")]
+
+
+def test_orphan_recovery_bounds_registry_and_per_board_failures(
+    monkeypatch,
+):
+    failures = []
+    registry_db = SimpleNamespace(
+        complete_task=lambda *_args, expected_run_id=None, **_kwargs: True,
+        reclaim_task=lambda *_args, expected_run_id=None, **_kwargs: True,
+        list_boards=lambda **_kwargs: (_ for _ in ()).throw(OSError("registry")),
+    )
+    monkeypatch.setitem(
+        sys.modules,
+        "hermes_cli",
+        SimpleNamespace(kanban_db=registry_db),
+    )
+    monkeypatch.setattr(lanes, "recover_pending_finalizations", lambda: 0)
+    monkeypatch.setattr(
+        lanes,
+        "_record_board_access_error",
+        lambda board, error: failures.append((board, str(error))),
+    )
+    lanes.recover_orphans()
+    assert failures == [("board-registry", "registry")]
+
+    class Connection:
+        def close(self):
+            failures.append(("close", "yes"))
+
+    board_db = SimpleNamespace(
+        complete_task=registry_db.complete_task,
+        reclaim_task=registry_db.reclaim_task,
+        list_boards=lambda **_kwargs: [{"slug": ""}, {"slug": "broken"}],
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: Connection(),
+        list_tasks=lambda _conn: (_ for _ in ()).throw(OSError("board read")),
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=board_db))
+    lanes.recover_orphans()
+    assert ("broken", "board read") in failures
+    assert ("close", "yes") in failures
+
+
+def test_claim_ready_handles_zero_limit_empty_boards_and_claim_errors(monkeypatch):
+    monkeypatch.setitem(
+        sys.modules,
+        "hermes_cli",
+        SimpleNamespace(kanban_db=SimpleNamespace()),
+    )
+    assert lanes.claim_ready(set(), 0) == []
+
+    class Connection:
+        def close(self):
+            return None
+
+    task = SimpleNamespace(
+        id="t_claim",
+        status="ready",
+        assignee="cli-auto",
+    )
+    db = SimpleNamespace(
+        list_boards=lambda **_kwargs: [{"slug": ""}, {"slug": "cassandra"}],
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: Connection(),
+        recompute_ready=lambda _conn: None,
+        list_tasks=lambda _conn: [task],
+        claim_task=lambda *_args, **_kwargs: (_ for _ in ()).throw(
+            RuntimeError("claim raced")
+        ),
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    assert lanes.claim_ready(set(), 1) == []
+
+
+class _Future:
+    def __init__(self):
+        self.polls = 0
+
+    def done(self):
+        self.polls += 1
+        return self.polls >= 1
+
+    def result(self):
+        raise RuntimeError("worker failed")
+
+
+class _Pool:
+    def __init__(self, max_workers):
+        self.max_workers = max_workers
+        self.future = _Future()
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_args):
+        return False
+
+    def submit(self, function, board, task_id):
+        assert callable(function)
+        assert (board, task_id) == ("cassandra", "t_loop")
+        return self.future
+
+
+def test_ready_dispatch_loop_submits_and_reaps_failed_workers(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    db = SimpleNamespace()
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "RESULT_SCHEMA_PATH", tmp_path / "schema.json")
+    monkeypatch.setattr(lanes, "recover_orphans", lambda: None)
+    monkeypatch.setattr(
+        lanes,
+        "initialize_kanban_capabilities",
+        lambda _db: lanes.KanbanCapabilities(True, True, True),
+    )
+    monkeypatch.setattr(lanes, "recover_pending_finalizations", lambda: 0)
+    monkeypatch.setattr(lanes, "maybe_gc_lane_artifacts", lambda: 0)
+    claims = [[("cassandra", "t_loop")], []]
+    monkeypatch.setattr(lanes, "claim_ready", lambda *_args: claims.pop(0))
+    monkeypatch.setattr(
+        lanes.concurrent.futures,
+        "ThreadPoolExecutor",
+        _Pool,
+    )
+    sleeps = []
+
+    def stop_second_loop(_seconds):
+        sleeps.append(True)
+        if len(sleeps) == 2:
+            raise RuntimeError("stop loop")
+
+    monkeypatch.setattr(lanes.time, "sleep", stop_second_loop)
+
+    with pytest.raises(RuntimeError, match="stop loop"):
+        lanes.main()
+
+    assert "worker future failed: worker failed" in capsys.readouterr().err
+
+
+def test_deferred_dispatch_health_never_claims_new_work(
+    tmp_path: Path,
+    monkeypatch,
+):
+    db = SimpleNamespace()
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "RESULT_SCHEMA_PATH", tmp_path / "schema.json")
+    monkeypatch.setattr(lanes, "recover_orphans", lambda: None)
+    monkeypatch.setattr(
+        lanes,
+        "initialize_kanban_capabilities",
+        lambda _db: lanes.KanbanCapabilities(True, False, False),
+    )
+    monkeypatch.setattr(lanes, "recover_pending_finalizations", lambda: 0)
+    monkeypatch.setattr(lanes, "maybe_gc_lane_artifacts", lambda: 0)
+    monkeypatch.setattr(
+        lanes,
+        "claim_ready",
+        lambda *_args: pytest.fail("deferred startup must not claim work"),
+    )
+    monkeypatch.setattr(lanes.concurrent.futures, "ThreadPoolExecutor", _Pool)
+    monkeypatch.setattr(
+        lanes.time,
+        "sleep",
+        lambda _seconds: (_ for _ in ()).throw(RuntimeError("stop loop")),
+    )
+    with pytest.raises(RuntimeError, match="stop loop"):
+        lanes.main()

testing/tests/test_hermes_cli_evidence_edges.py

@@ -0,0 +1,194 @@
+"""Failure-boundary coverage for immutable lane evidence and retention."""
+
+from __future__ import annotations
+
+import errno
+import os
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+
+from testing.tests.test_hermes_cli_support import _pending_terminal_record, lanes
+
+
+def test_rename_noreplace_rejects_missing_kernel_support(monkeypatch):
+    monkeypatch.setattr(lanes.ctypes, "CDLL", lambda *_args, **_kwargs: object())
+    with pytest.raises(OSError) as raised:
+        lanes._rename_noreplace("a", "b", source_dir=1, destination_dir=1)
+    assert raised.value.errno == errno.ENOSYS
+
+
+def test_rename_noreplace_surfaces_kernel_errno(monkeypatch):
+    class Rename:
+        argtypes = None
+        restype = None
+
+        def __call__(self, *_args):
+            return -1
+
+    monkeypatch.setattr(
+        lanes.ctypes,
+        "CDLL",
+        lambda *_args, **_kwargs: SimpleNamespace(renameat2=Rename()),
+    )
+    monkeypatch.setattr(lanes.ctypes, "get_errno", lambda: errno.EEXIST)
+    with pytest.raises(FileExistsError):
+        lanes._rename_noreplace("a", "b", source_dir=1, destination_dir=1)
+
+
+def test_retirement_reports_missing_replacement_collision_and_restoration(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path = tmp_path / "pending"
+    path.write_text("old", encoding="utf-8")
+    source = path.stat()
+    directory = os.open(tmp_path, os.O_RDONLY | getattr(os, "O_DIRECTORY", 0))
+    try:
+        path.unlink()
+        assert lanes._retire_terminal_entry(
+            path,
+            source,
+            board_descriptor=directory,
+            quarantine_descriptor=directory,
+        ) == "missing"
+
+        path.write_text("new", encoding="utf-8")
+        assert lanes._retire_terminal_entry(
+            path,
+            source,
+            board_descriptor=directory,
+            quarantine_descriptor=directory,
+        ) == "replacement"
+
+        replacement = path.stat()
+        monkeypatch.setattr(
+            lanes,
+            "_rename_noreplace",
+            lambda *_args, **_kwargs: (_ for _ in ()).throw(FileExistsError()),
+        )
+        assert lanes._retire_terminal_entry(
+            path,
+            replacement,
+            board_descriptor=directory,
+            quarantine_descriptor=directory,
+        ) == "collision"
+    finally:
+        os.close(directory)
+
+
+def test_retirement_preserves_a_postcheck_replacement(tmp_path: Path, monkeypatch):
+    path = tmp_path / "pending"
+    path.write_text("old", encoding="utf-8")
+    source = path.stat()
+    directory = os.open(tmp_path, os.O_RDONLY | getattr(os, "O_DIRECTORY", 0))
+    calls = []
+
+    def race(source_name, destination, **_kwargs):
+        calls.append((source_name, destination))
+        if len(calls) == 1:
+            os.rename(source_name, destination, src_dir_fd=directory, dst_dir_fd=directory)
+            staged = tmp_path / destination
+            staged.unlink()
+            staged.write_text("replacement", encoding="utf-8")
+        else:
+            os.rename(source_name, destination, src_dir_fd=directory, dst_dir_fd=directory)
+
+    monkeypatch.setattr(lanes, "_rename_noreplace", race)
+    try:
+        assert lanes._retire_terminal_entry(
+            path,
+            source,
+            board_descriptor=directory,
+            quarantine_descriptor=directory,
+        ) == "replacement"
+    finally:
+        os.close(directory)
+    assert path.read_text(encoding="utf-8") == "replacement"
+
+
+def test_evidence_writer_bounds_payload_and_cleans_failed_temporary(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "MAX_TERMINAL_RECORD_BYTES", 8)
+    with pytest.raises(ValueError, match="bounded"):
+        lanes._write_json_noreplace(tmp_path / "large.json", {"value": "x" * 5000})
+
+    monkeypatch.setattr(lanes, "MAX_TERMINAL_RECORD_BYTES", 1024 * 1024)
+    real_retire = lanes._retire_terminal_entry
+    monkeypatch.setattr(
+        lanes,
+        "_rename_noreplace",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("rename failed")),
+    )
+    monkeypatch.setattr(
+        lanes,
+        "_retire_terminal_entry",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("cleanup failed")),
+    )
+    with pytest.raises(OSError, match="rename failed"):
+        lanes._write_json_noreplace(tmp_path / "failed.json", {"value": "small"})
+    monkeypatch.setattr(lanes, "_retire_terminal_entry", real_retire)
+
+
+def test_evidence_paths_and_collision_validation_fail_closed(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "cli-lanes")
+    identity = lanes.TerminalIdentity("cassandra", "t_evidence", 9, "pending")
+    document = _pending_terminal_record("cassandra", "t_evidence", 9, "accepted")
+    with pytest.raises(ValueError, match="evidence state"):
+        lanes._terminal_evidence_path(identity, "pending", document)
+
+    monkeypatch.setattr(lanes, "_write_json_noreplace", lambda *_args: False)
+    monkeypatch.setattr(lanes, "_terminal_evidence_identity", lambda _path: None)
+    with pytest.raises(OSError, match="identity is invalid"):
+        lanes._persist_prepared_evidence(identity, document)
+    with pytest.raises(OSError, match="conflict evidence identity"):
+        lanes._persist_conflict_evidence(identity, document, "loser")
+
+
+def test_existing_evidence_with_different_result_is_rejected(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "cli-lanes")
+    identity = lanes.TerminalIdentity("cassandra", "t_evidence", 10, "pending")
+    document = _pending_terminal_record("cassandra", "t_evidence", 10, "accepted")
+    prepared_identity = lanes.TerminalIdentity("cassandra", "t_evidence", 10, "prepared")
+    conflict_identity = lanes.TerminalIdentity("cassandra", "t_evidence", 10, "conflict")
+    monkeypatch.setattr(lanes, "_write_json_noreplace", lambda *_args: False)
+    monkeypatch.setattr(
+        lanes,
+        "_terminal_evidence_identity",
+        lambda path: conflict_identity if "conflict" in path.name else prepared_identity,
+    )
+    monkeypatch.setattr(lanes, "_load_small_json", lambda _path: {})
+    with pytest.raises(OSError, match="conflicting result"):
+        lanes._persist_prepared_evidence(identity, document)
+    with pytest.raises(OSError, match="different result"):
+        lanes._persist_conflict_evidence(identity, document, "loser")
+
+
+def test_retention_failure_paths_are_bounded(tmp_path: Path, monkeypatch, capsys):
+    path = tmp_path / "artifact"
+    path.write_text("data", encoding="utf-8")
+    observed = path.stat()
+    monkeypatch.setattr(
+        lanes,
+        "_retire_terminal_entry",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("busy")),
+    )
+    assert lanes._unlink_artifact_if_same(path, observed) is False
+
+    monkeypatch.setattr(lanes, "LAST_ARTIFACT_GC", 0.0)
+    monkeypatch.setattr(
+        lanes,
+        "gc_lane_artifacts",
+        lambda **_kwargs: (_ for _ in ()).throw(OSError("volume")),
+    )
+    assert lanes.maybe_gc_lane_artifacts(now=1000) == 0
+    assert "retention deferred" in capsys.readouterr().err

testing/tests/test_hermes_cli_execution_edges.py

@@ -0,0 +1,218 @@
+"""Execution-loop edge coverage for preparation, callbacks, and recovery."""
+
+from __future__ import annotations
+
+import sqlite3
+import sys
+from contextlib import nullcontext
+from pathlib import Path
+from types import SimpleNamespace
+
+from testing.tests.test_hermes_cli_support import _completed_result, lanes
+
+
+class _Connection:
+    def close(self):
+        return None
+
+
+def test_missing_claim_is_a_noop(tmp_path: Path, monkeypatch):
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: _Connection(),
+        get_task=lambda *_args: None,
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    lanes.execute_claim("cassandra", "missing")
+
+
+def test_transient_callback_storage_errors_do_not_kill_provider(
+    tmp_path: Path,
+    monkeypatch,
+):
+    task = SimpleNamespace(
+        id="t_callbacks",
+        status="running",
+        current_run_id=20,
+        assignee="cli-auto",
+        max_runtime_seconds=60,
+    )
+    blocks = []
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: _Connection(),
+        get_task=lambda *_args: task,
+        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
+        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
+        set_branch_name=lambda *_args: None,
+        set_workspace_path=lambda *_args: None,
+        build_worker_context=lambda *_args: "exercise callbacks",
+        heartbeat_worker=lambda *_args, **_kwargs: (_ for _ in ()).throw(
+            sqlite3.OperationalError("heartbeat volume")
+        ),
+        add_comment=lambda *_args, **_kwargs: (_ for _ in ()).throw(
+            sqlite3.OperationalError("comment volume")
+        ),
+        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    monkeypatch.setattr(lanes, "KANBAN_STORAGE_ATTEMPTS", 1)
+    monkeypatch.setattr(lanes, "fresh_unavailable_provider", lambda: "claude")
+    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
+    monkeypatch.setattr(lanes, "select_route", lambda *_args, **_kwargs: route)
+
+    def provider(*args, **_kwargs):
+        assert args[6]("still working") is True
+        return lanes.ProcessResult(1, "failed", None, False)
+
+    monkeypatch.setattr(lanes, "run_provider", provider)
+    lanes.execute_claim("cassandra", "t_callbacks")
+
+    assert blocks and blocks[0]["kind"] == "capability"
+
+
+def test_restart_handoff_survives_missing_prior_log(tmp_path: Path, monkeypatch):
+    task = SimpleNamespace(
+        id="t_restart",
+        status="running",
+        current_run_id=21,
+        assignee="cli-auto",
+        max_runtime_seconds=60,
+    )
+    state_root = tmp_path / "lanes"
+    monkeypatch.setattr(lanes, "STATE_ROOT", state_root)
+    state_file = lanes.state_path("cassandra", "t_restart")
+    lanes.atomic_json(state_file, {"current_route": {"provider": "claude"}})
+    blocks = []
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: _Connection(),
+        get_task=lambda *_args: task,
+        worker_log_path=lambda *_args, **_kwargs: tmp_path / "missing.log",
+        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
+        set_branch_name=lambda *_args: None,
+        set_workspace_path=lambda *_args: None,
+        build_worker_context=lambda *_args: "resume",
+        add_comment=lambda *_args, **_kwargs: None,
+        heartbeat_worker=lambda *_args, **_kwargs: True,
+        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
+    monkeypatch.setattr(lanes, "select_route", lambda *_args, **_kwargs: route)
+    handoffs = []
+    monkeypatch.setattr(
+        lanes,
+        "git_handoff",
+        lambda _workspace, output: handoffs.append(output) or "handoff",
+    )
+    monkeypatch.setattr(
+        lanes,
+        "run_provider",
+        lambda *_args, **_kwargs: lanes.ProcessResult(1, "failed", None, False),
+    )
+
+    lanes.execute_claim("cassandra", "t_restart")
+
+    assert handoffs == ["Previous provider log was unavailable after restart."]
+    assert blocks
+
+
+def test_unreplayable_persistence_error_recovers_exact_run(
+    tmp_path: Path,
+    monkeypatch,
+):
+    task = SimpleNamespace(
+        id="t_persist",
+        status="running",
+        current_run_id=22,
+        assignee="cli-auto",
+        max_runtime_seconds=60,
+    )
+    comments = []
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: _Connection(),
+        get_task=lambda *_args: task,
+        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
+        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
+        set_branch_name=lambda *_args: None,
+        set_workspace_path=lambda *_args: None,
+        build_worker_context=lambda *_args: "finish",
+        add_comment=lambda _conn, _task, _author, body: comments.append(body),
+        heartbeat_worker=lambda *_args, **_kwargs: True,
+        block_task=lambda *_args, **_kwargs: None,
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    monkeypatch.setattr(
+        lanes,
+        "select_route",
+        lambda *_args, **_kwargs: lanes.Route(
+            "codex", "gpt", "high", "p", "c", "r", 1, ()
+        ),
+    )
+    monkeypatch.setattr(
+        lanes,
+        "run_provider",
+        lambda *_args, **_kwargs: lanes.ProcessResult(
+            0, "", _completed_result("accepted"), False
+        ),
+    )
+    monkeypatch.setattr(
+        lanes,
+        "_write_terminal_record",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("disk")),
+    )
+    monkeypatch.setattr(lanes, "_has_pending_finalization", lambda *_args: False)
+    recovered = []
+    monkeypatch.setattr(
+        lanes,
+        "_recover_exact_run",
+        lambda *args: recovered.append(args) or True,
+    )
+
+    lanes.execute_claim("cassandra", "t_persist")
+
+    assert recovered and recovered[0][1].run_id == 22
+    assert any("terminal replayable=False" in body for body in comments)
+
+
+def test_unexpected_route_exception_blocks_the_exact_run(
+    tmp_path: Path,
+    monkeypatch,
+):
+    task = SimpleNamespace(
+        id="t_route",
+        status="running",
+        current_run_id=23,
+        assignee="cli-auto",
+        max_runtime_seconds=60,
+    )
+    blocks = []
+    db = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: _Connection(),
+        get_task=lambda *_args: task,
+        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
+        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
+        set_branch_name=lambda *_args: None,
+        set_workspace_path=lambda *_args: None,
+        build_worker_context=lambda *_args: "route",
+        add_comment=lambda *_args, **_kwargs: None,
+        heartbeat_worker=lambda *_args, **_kwargs: True,
+        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
+    )
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    monkeypatch.setattr(
+        lanes,
+        "select_route",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(RuntimeError("router down")),
+    )
+
+    lanes.execute_claim("cassandra", "t_route")
+
+    assert blocks[0]["expected_run_id"] == 23
+    assert "router down" in blocks[0]["reason"]

testing/tests/test_hermes_cli_finalization_edges.py

@@ -0,0 +1,164 @@
+"""Exact-run finalization guard and convergence edge coverage."""
+
+from __future__ import annotations
+
+from contextlib import nullcontext
+from pathlib import Path
+from types import SimpleNamespace
+
+from testing.tests.test_hermes_cli_support import (
+    _pending_terminal_record,
+    lanes,
+)
+
+
+class _Connection:
+    def close(self):
+        return None
+
+
+def _db(task):
+    return SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: _Connection(),
+        get_task=lambda *_args: task,
+        reclaim_task=lambda *_args, expected_run_id=None, **_kwargs: True,
+        complete_task=lambda *_args, expected_run_id=None,
+        replay_ended_run_id=None, **_kwargs: False,
+    )
+
+
+def test_exact_recovery_rejects_missing_capability_and_nonauthoritative_tasks(
+    monkeypatch,
+):
+    identity = lanes.TerminalIdentity("cassandra", "t_recover", 3, "pending")
+    assert lanes._recover_exact_run(_db(None), None, "missing") is False
+
+    monkeypatch.setattr(
+        lanes,
+        "kanban_capabilities",
+        lambda _db: lanes.KanbanCapabilities(True, True, False),
+    )
+    assert lanes._recover_exact_run(_db(None), identity, "old image") is False
+
+    monkeypatch.setattr(
+        lanes,
+        "kanban_capabilities",
+        lambda _db: lanes.KanbanCapabilities(True, True, True),
+    )
+    assert lanes._recover_exact_run(_db(None), identity, "missing task") is False
+    internal = SimpleNamespace(
+        status="running",
+        current_run_id=3,
+        assignee="internal",
+    )
+    assert lanes._recover_exact_run(_db(internal), identity, "internal") is False
+
+
+def test_exact_recovery_bounds_board_access_failure(monkeypatch):
+    identity = lanes.TerminalIdentity("cassandra", "t_recover", 4, "pending")
+    db = _db(SimpleNamespace(status="running", current_run_id=4, assignee="cli-auto"))
+    db.connect = lambda **_kwargs: (_ for _ in ()).throw(OSError("volume"))
+    errors = []
+    monkeypatch.setattr(lanes, "KANBAN_STORAGE_ATTEMPTS", 1)
+    monkeypatch.setattr(
+        lanes,
+        "_record_board_access_error",
+        lambda board, error: errors.append((board, str(error))),
+    )
+    assert lanes._recover_exact_run(db, identity, "storage") is False
+    assert errors[-1] == ("cassandra", "volume")
+
+
+def test_finalizer_guards_invalid_runtime_identity_and_missing_task(monkeypatch):
+    identity = object.__new__(lanes.TerminalIdentity)
+    object.__setattr__(identity, "board", "cassandra")
+    object.__setattr__(identity, "task_id", "t_invalid")
+    object.__setattr__(identity, "run_id", 0)
+    object.__setattr__(identity, "state", "pending")
+    assert lanes._finalize_document_db(_db(None), identity, {}) == "stale"
+
+    valid = lanes.TerminalIdentity("cassandra", "missing", 5, "pending")
+    assert lanes._finalize_document_db(_db(None), valid, {}) == "stale"
+
+    running = SimpleNamespace(
+        status="running",
+        current_run_id=5,
+        completed_run_id=None,
+        result=None,
+    )
+    monkeypatch.setattr(
+        lanes,
+        "kanban_capabilities",
+        lambda _db: lanes.KanbanCapabilities(False, False, False),
+    )
+    assert lanes._finalize_document_db(_db(running), valid, {}) == "deferred"
+
+
+class _Snapshot:
+    def __init__(self, document):
+        self.document = document
+        self.closed = 0
+
+    def close(self):
+        self.closed += 1
+
+
+def test_resolve_pending_rejects_invalid_document_and_unknown_retirement(
+    tmp_path: Path,
+    monkeypatch,
+):
+    identity = lanes.TerminalIdentity("cassandra", "t_pending", 6, "pending")
+    invalid = _Snapshot({})
+    monkeypatch.setattr(lanes, "_open_terminal_snapshot", lambda *_args: invalid)
+    assert lanes._resolve_pending_after_winner(tmp_path / "pending", identity, {}) is False
+    assert invalid.closed == 1
+
+    valid_document = _pending_terminal_record("cassandra", "t_pending", 6, "winner")
+    unknown = _Snapshot(valid_document)
+    monkeypatch.setattr(lanes, "_open_terminal_snapshot", lambda *_args: unknown)
+    monkeypatch.setattr(lanes, "_retire_snapshot_after_db", lambda *_args: "deferred")
+    assert (
+        lanes._resolve_pending_after_winner(
+            tmp_path / "pending",
+            identity,
+            valid_document,
+        )
+        is False
+    )
+    assert unknown.closed == 1
+
+
+def test_resolve_pending_stops_after_bounded_replacement_churn(
+    tmp_path: Path,
+    monkeypatch,
+):
+    identity = lanes.TerminalIdentity("cassandra", "t_churn", 7, "pending")
+    document = _pending_terminal_record("cassandra", "t_churn", 7, "winner")
+    snapshots = []
+
+    def snapshot(*_args):
+        value = _Snapshot(document)
+        snapshots.append(value)
+        return value
+
+    monkeypatch.setattr(lanes, "_open_terminal_snapshot", snapshot)
+    monkeypatch.setattr(lanes, "_retire_snapshot_after_db", lambda *_args: "replacement")
+    assert lanes._resolve_pending_after_winner(tmp_path / "pending", identity, document) is False
+    assert len(snapshots) == 8
+    assert all(item.closed == 1 for item in snapshots)
+
+
+def test_terminal_finalizer_closes_supplied_invalid_snapshots(
+    tmp_path: Path,
+    monkeypatch,
+):
+    snapshot = _Snapshot({})
+    assert lanes._finalize_terminal_record(_db(None), tmp_path / "bad", snapshot=snapshot) == "invalid"
+    assert snapshot.closed == 1
+
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    path = lanes._terminal_path(lanes.state_path("board", "task"), 8)
+    empty = _Snapshot(None)
+    assert lanes._finalize_terminal_record(_db(None), path, snapshot=empty) == "invalid"
+    assert empty.closed == 1

testing/tests/test_hermes_cli_foundation_coverage.py

@@ -0,0 +1,207 @@
+"""Adversarial branch coverage for CLI lane foundation helpers."""
+
+from __future__ import annotations
+
+import json
+import sqlite3
+from contextlib import nullcontext
+from pathlib import Path
+from types import SimpleNamespace
+from urllib.error import URLError
+
+import pytest
+
+from testing.tests.test_hermes_cli_support import _completed_result, lanes
+
+
+def test_board_context_serializes_objects_and_storage_failure_is_bounded(
+    monkeypatch,
+):
+    db = SimpleNamespace(build_worker_context=lambda _conn, _task: {"priority": 3})
+    assert lanes._task_context(db, object(), "t_ctx") == '{\n  "priority": 3\n}'
+
+    connections = []
+
+    class Connection:
+        def close(self):
+            connections.append("closed")
+
+    failing = SimpleNamespace(
+        scoped_current_board=lambda _board: nullcontext(),
+        connect=lambda board: Connection(),
+    )
+    monkeypatch.setattr(lanes, "KANBAN_STORAGE_ATTEMPTS", 2)
+    monkeypatch.setattr(lanes.time, "sleep", lambda _seconds: None)
+    with pytest.raises(sqlite3.OperationalError, match="volume unavailable"):
+        lanes._board_call(
+            failing,
+            "cassandra",
+            lambda _conn: (_ for _ in ()).throw(
+                sqlite3.OperationalError("volume unavailable")
+            ),
+        )
+    assert connections == ["closed", "closed"]
+
+
+def test_atomic_json_closes_an_unwrapped_descriptor_on_open_failure(
+    tmp_path: Path,
+    monkeypatch,
+):
+    destination = tmp_path / "state.json"
+    real_fdopen = lanes.os.fdopen
+    descriptors = []
+
+    def fail_fdopen(descriptor, *_args, **_kwargs):
+        descriptors.append(descriptor)
+        raise OSError("cannot wrap descriptor")
+
+    monkeypatch.setattr(lanes.os, "fdopen", fail_fdopen)
+    with pytest.raises(OSError, match="cannot wrap"):
+        lanes.atomic_json(destination, {"safe": True})
+    monkeypatch.setattr(lanes.os, "fdopen", real_fdopen)
+
+    assert descriptors
+    with pytest.raises(OSError):
+        lanes.os.fstat(descriptors[0])
+    assert list(tmp_path.glob("*.tmp")) == []
+
+
+def test_json_and_terminal_path_helpers_fail_closed(tmp_path: Path, monkeypatch):
+    invalid = tmp_path / "invalid.json"
+    invalid.write_bytes(b"\xff")
+    assert lanes.load_json(invalid) == {}
+    array = tmp_path / "array.json"
+    array.write_text("[]", encoding="utf-8")
+    assert lanes.load_json(array) == {}
+
+    with pytest.raises(ValueError, match="journal state"):
+        lanes._terminal_path(tmp_path / "task.json", 1, "prepared")
+    with pytest.raises(ValueError, match="SQLite"):
+        lanes._terminal_path(tmp_path / "task.json", True)
+
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    outside = tmp_path / "outside.run-1.terminal.pending.json"
+    assert lanes._terminal_identity(outside) is None
+    nested = lanes.STATE_ROOT / "board" / "nested" / "x.json"
+    assert lanes._terminal_identity(nested) is None
+    missing = lanes.STATE_ROOT / "board" / "t.run-1.terminal.pending.json"
+    assert lanes._terminal_identity(missing) is None
+    assert lanes._terminal_evidence_identity(outside) is None
+    assert lanes._terminal_evidence_identity(nested) is None
+    missing_evidence = lanes.STATE_ROOT / "board" / (
+        "t.run-1.terminal.prepared-" + "a" * 32 + ".json"
+    )
+    assert lanes._terminal_evidence_identity(missing_evidence) is None
+
+
+def test_goal_helpers_cover_compaction_and_deterministic_failures():
+    compacted = lanes.cli_lane_goal._bounded("a" * 100, 40)
+    assert len(compacted) == 40
+    assert "compacted" in compacted
+    assert lanes.cli_lane_goal.unfinished_result_reason(
+        {"status": "incomplete", "summary": ""}
+    ) == "worker explicitly reported incomplete work"
+    assert lanes.cli_lane_goal.unfinished_result_reason(
+        {"status": "blocked", "summary": "waiting"}
+    ) is None
+    assert "blockers" in lanes.cli_lane_goal.unfinished_result_reason(
+        {"status": "completed", "summary": "done", "blockers": ["remote"]}
+    )
+    assert "unfinished" in lanes.cli_lane_goal.unfinished_result_reason(
+        {
+            "status": "completed",
+            "summary": "verification is pending",
+            "blockers": [],
+            "tests_run": [],
+        }
+    )
+    accepted, reason = lanes.cli_lane_goal.judge_goal_completion(
+        "finish",
+        {"status": "incomplete", "summary": "still running"},
+        open_request=lambda *_args, **_kwargs: pytest.fail("network must not run"),
+    )
+    assert accepted is False
+    assert reason
+
+
+def test_prompt_artifact_and_json_helpers_reject_unsafe_inputs(
+    tmp_path: Path,
+):
+    workspace = tmp_path / "workspace"
+    workspace.mkdir()
+    artifact = workspace / "evidence.txt"
+    artifact.write_text("evidence", encoding="utf-8")
+    outside = tmp_path / "outside.txt"
+    outside.write_text("outside", encoding="utf-8")
+    directory = workspace / "directory"
+    directory.mkdir()
+
+    assert lanes.workspace_artifacts(workspace, "not-a-list") == []
+    assert lanes.workspace_artifacts(
+        workspace,
+        [None, "", "missing", outside, directory, artifact, str(artifact)],
+    ) == [str(artifact.resolve())]
+    assert lanes._extract_json({"status": "completed"}) == {"status": "completed"}
+    assert lanes._extract_json(42) is None
+    assert lanes._extract_json("not json") is None
+    assert lanes._extract_json('prefix {"status":"blocked"} suffix') == {
+        "status": "blocked"
+    }
+
+
+def test_provider_event_parsing_persists_sessions_and_nested_results(
+    tmp_path: Path,
+):
+    state_file = tmp_path / "state.json"
+    state = {}
+    assert lanes._event_payload("codex", "not-json", state, state_file) is None
+    assert lanes._event_payload("codex", "[]", state, state_file) is None
+    assert (
+        lanes._event_payload(
+            "codex",
+            json.dumps({"type": "thread.started", "thread": {"id": "thread-1"}}),
+            state,
+            state_file,
+        )
+        is None
+    )
+    assert state["codex_thread_id"] == "thread-1"
+    result = lanes._event_payload(
+        "claude",
+        json.dumps(
+            {
+                "session_id": "session-1",
+                "item": {"content": json.dumps(_completed_result("nested"))},
+            }
+        ),
+        state,
+        state_file,
+    )
+    assert result and result["summary"] == "nested"
+    assert state["claude_session_id"] == "session-1"
+
+
+@pytest.mark.parametrize("assignee", ["cli-codex-max", "worker-auto", ""])
+def test_routing_rejects_invalid_assignees(assignee: str):
+    with pytest.raises(ValueError, match="unsupported"):
+        lanes.parse_assignee(assignee)
+
+
+@pytest.mark.parametrize(
+    "target",
+    ["codex/model/high", "worker/local/model/high", "worker/codex/model/max"],
+)
+def test_worker_target_decoder_rejects_invalid_targets(target: str):
+    with pytest.raises(RuntimeError):
+        lanes._decode_worker_target(target)
+
+
+def test_switchyard_network_failure_is_explicit():
+    with pytest.raises(RuntimeError, match="routing failed"):
+        lanes.select_route(
+            "objective",
+            "cli-auto",
+            open_request=lambda *_args, **_kwargs: (_ for _ in ()).throw(
+                URLError("offline")
+            ),
+        )

testing/tests/test_hermes_cli_provider_edges.py

@@ -0,0 +1,173 @@
+"""Process lifecycle and provider artifact edge coverage for CLI workers."""
+
+from __future__ import annotations
+
+import json
+import os
+import signal
+import subprocess
+import sys
+from pathlib import Path
+
+from testing.tests.test_hermes_cli_support import _completed_result, lanes
+
+
+def test_stream_process_enforces_runtime_and_lease_boundaries(
+    tmp_path: Path,
+):
+    timed_out = lanes.stream_process(
+        [sys.executable, "-c", "import time; time.sleep(30)"],
+        provider="codex",
+        cwd=tmp_path,
+        env=dict(os.environ),
+        log_path=tmp_path / "timeout.log",
+        state={},
+        state_file=tmp_path / "timeout-state.json",
+        heartbeat=lambda _note: True,
+        max_runtime=-1,
+    )
+    assert "maximum runtime" in timed_out.output
+    assert timed_out.returncode != 0
+
+    lease_lost = lanes.stream_process(
+        [sys.executable, "-c", "import time; time.sleep(30)"],
+        provider="claude",
+        cwd=tmp_path,
+        env=dict(os.environ),
+        log_path=tmp_path / "lease.log",
+        state={},
+        state_file=tmp_path / "lease-state.json",
+        heartbeat=lambda _note: False,
+        max_runtime=60,
+    )
+    assert "lease was lost" in lease_lost.output
+    assert lease_lost.returncode != 0
+
+
+def test_process_identity_and_signal_failures_are_bounded(monkeypatch):
+    assert lanes._process_record(999999999) is None
+    monkeypatch.setattr(
+        lanes,
+        "_process_identity_matches",
+        lambda _pid, _start: True,
+    )
+    monkeypatch.setattr(
+        lanes.os,
+        "killpg",
+        lambda *_args: (_ for _ in ()).throw(ProcessLookupError()),
+    )
+    monkeypatch.setattr(
+        lanes.os,
+        "kill",
+        lambda *_args: (_ for _ in ()).throw(ProcessLookupError()),
+    )
+    lanes._signal_worker_tree(10, {11: (12, 13)}, signal.SIGTERM)
+
+
+def test_descendant_snapshot_follows_multiple_generations(monkeypatch):
+    entries = [Path("/proc/self"), Path("/proc/10"), Path("/proc/11"), Path("/proc/12")]
+    monkeypatch.setattr(lanes.Path, "iterdir", lambda _path: iter(entries))
+    records = {
+        10: (1, 10, 100),
+        11: (10, 11, 101),
+        12: (11, 12, 102),
+    }
+    monkeypatch.setattr(lanes, "_process_record", lambda pid: records.get(pid))
+    assert lanes._descendant_processes(10) == {11: (11, 101), 12: (12, 102)}
+
+
+def test_terminate_escalates_after_term_timeout(monkeypatch):
+    class Process:
+        pid = 321
+        waits = 0
+
+        @classmethod
+        def poll(cls):
+            return None
+
+        @classmethod
+        def wait(cls, timeout):
+            cls.waits += 1
+            if cls.waits == 1:
+                raise subprocess.TimeoutExpired("worker", timeout)
+            return 0
+
+    signals = []
+    monkeypatch.setattr(lanes, "_descendant_processes", lambda _pid: {})
+    monkeypatch.setattr(
+        lanes,
+        "_signal_worker_tree",
+        lambda _pid, _descendants, sig: signals.append(sig),
+    )
+    lanes._terminate_worker_process(Process())
+    assert signals == [signal.SIGTERM, signal.SIGKILL]
+    assert Process.waits == 2
+
+
+def test_codex_result_collision_and_chmod_failure_preserve_result(
+    tmp_path: Path,
+    monkeypatch,
+):
+    state = {"run_id": 7, "result_sequence": 0}
+    state_file = tmp_path / "task.json"
+    first = lanes._result_path(state_file, 7, 1)
+    first.write_text("prior", encoding="utf-8")
+    result_paths = []
+
+    def stream(command, **_kwargs):
+        result_path = Path(command[command.index("-o") + 1])
+        result_path.write_text(json.dumps(_completed_result("new result")), encoding="utf-8")
+        result_paths.append(result_path)
+        return lanes.ProcessResult(0, "", None, False)
+
+    monkeypatch.setattr(lanes, "stream_process", stream)
+    monkeypatch.setattr(
+        lanes.Path,
+        "chmod",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("readonly")),
+    )
+    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
+    result = lanes.run_provider(
+        route,
+        "work",
+        tmp_path,
+        state,
+        state_file,
+        tmp_path / "log",
+        lambda _note: True,
+        60,
+    )
+    assert result.structured["summary"] == "new result"
+    assert result_paths[0].name.endswith("provider-2.result.json")
+
+
+def test_codex_missing_thread_skips_colliding_restart_result(
+    tmp_path: Path,
+    monkeypatch,
+):
+    state = {"run_id": 8, "codex_thread_id": "missing"}
+    state_file = tmp_path / "task.json"
+    second = lanes._result_path(state_file, 8, 2)
+    second.write_text("collision", encoding="utf-8")
+    calls = []
+
+    def stream(command, **_kwargs):
+        calls.append(command)
+        if len(calls) == 1:
+            return lanes.ProcessResult(1, lanes.NO_CODEX_THREAD, None, False)
+        return lanes.ProcessResult(0, "", None, False)
+
+    monkeypatch.setattr(lanes, "stream_process", stream)
+    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
+    lanes.run_provider(
+        route,
+        "work",
+        tmp_path,
+        state,
+        state_file,
+        tmp_path / "log",
+        lambda _note: True,
+        60,
+    )
+    restart = Path(calls[1][calls[1].index("-o") + 1])
+    assert restart.name.endswith("provider-3.result.json")

testing/tests/test_hermes_cli_quarantine_edges.py

@@ -0,0 +1,185 @@
+"""Degraded quarantine-path coverage for terminal journal safety."""
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+from testing.tests.test_hermes_cli_support import lanes
+
+
+def test_quarantine_refuses_missing_or_unsafe_board_directory(
+    tmp_path: Path,
+    capsys,
+):
+    path = tmp_path / "missing" / "journal"
+    assert lanes._quarantine_terminal(path, None, "invalid") == path
+    assert "unsafe board directory" in capsys.readouterr().err
+
+    regular_parent = tmp_path / "regular"
+    regular_parent.write_text("not a directory", encoding="utf-8")
+    unsafe = regular_parent / "journal"
+    assert lanes._quarantine_terminal(unsafe, None, "invalid") == unsafe
+
+
+def test_quarantine_accepts_a_lexically_outside_but_pinned_path(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "other-root")
+    board = tmp_path / "board"
+    board.mkdir()
+    path = board / "journal"
+    path.write_bytes(b"invalid")
+
+    destination = lanes._quarantine_terminal(path, None, "bad reason / outside")
+
+    assert destination.parent == board / "quarantine"
+    assert not path.exists()
+
+
+def test_quarantine_rejects_changed_pinned_board_identity(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path)
+    board = tmp_path / "board"
+    board.mkdir()
+    path = board / "journal"
+    path.write_bytes(b"invalid")
+    snapshot = lanes._open_terminal_recovery_snapshot(path)
+    assert snapshot is not None
+    real_fstat = lanes.os.fstat
+
+    def changed_board(descriptor):
+        observed = real_fstat(descriptor)
+        if descriptor == snapshot.directory_descriptor:
+            return os.stat_result(
+                (*observed[:1], observed.st_ino + 1, *observed[2:])
+            )
+        return observed
+
+    monkeypatch.setattr(lanes.os, "fstat", changed_board)
+    try:
+        lanes._quarantine_terminal(path, None, "changed-board", snapshot=snapshot)
+    finally:
+        snapshot.close()
+    assert not path.exists()
+    assert "degraded safely" in capsys.readouterr().err
+
+
+def test_quarantine_rejects_source_replaced_during_open(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path)
+    board = tmp_path / "board"
+    board.mkdir()
+    path = board / "journal"
+    path.write_bytes(b"original")
+    replacement = board / "replacement"
+    replacement.write_bytes(b"replacement")
+    real_open = lanes.os.open
+    swapped = {"value": False}
+
+    def swap_before_source_open(target, flags, *args, **kwargs):
+        if target == path.name and kwargs.get("dir_fd") is not None and not swapped["value"]:
+            os.replace(replacement, path)
+            swapped["value"] = True
+        return real_open(target, flags, *args, **kwargs)
+
+    monkeypatch.setattr(lanes.os, "open", swap_before_source_open)
+    lanes._quarantine_terminal(path, None, "source-race")
+    assert path.exists()
+    assert path.read_bytes() == b"replacement"
+    assert "degraded safely" in capsys.readouterr().err
+
+
+def test_quarantine_unlinks_an_invalid_destination_before_degrading(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path)
+    board = tmp_path / "board"
+    board.mkdir()
+    path = board / "journal"
+    path.write_bytes(b"invalid")
+    real_fstat = lanes.os.fstat
+    target_descriptors = set()
+    real_fdopen = lanes.os.fdopen
+
+    def remember_target(descriptor, *args, **kwargs):
+        target_descriptors.add(descriptor)
+        return real_fdopen(descriptor, *args, **kwargs)
+
+    def unsafe_target(descriptor):
+        observed = real_fstat(descriptor)
+        if descriptor in target_descriptors:
+            return os.stat_result(
+                (*observed[:3], 0o100644, *observed[4:])
+            )
+        return observed
+
+    monkeypatch.setattr(lanes.os, "fdopen", remember_target)
+    monkeypatch.setattr(lanes.os, "fstat", unsafe_target)
+    lanes._quarantine_terminal(path, None, "unsafe-target")
+
+    assert not list((board / "quarantine").glob("*.quarantine"))
+    assert "degraded safely" in capsys.readouterr().err
+
+
+def test_quarantine_destination_collision_is_bounded(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path)
+    board = tmp_path / "board"
+    board.mkdir()
+    path = board / "journal"
+    path.write_bytes(b"invalid")
+    real_open = lanes.os.open
+
+    def collide_on_destination(target, flags, *args, **kwargs):
+        if (
+            isinstance(target, str)
+            and target.endswith(".quarantine")
+            and flags & os.O_EXCL
+        ):
+            raise FileExistsError(target)
+        return real_open(target, flags, *args, **kwargs)
+
+    monkeypatch.setattr(lanes.os, "open", collide_on_destination)
+    destination = lanes._quarantine_terminal(path, None, "collision")
+
+    assert destination == path
+    assert not path.exists()
+    assert "could not reserve" in capsys.readouterr().err
+
+
+def test_quarantine_deferred_retirement_does_not_raise(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path)
+    board = tmp_path / "board"
+    board.mkdir()
+    path = board / "journal"
+    path.write_bytes(b"invalid")
+    calls = {"value": 0}
+
+    def fail_retirement(*_args, **_kwargs):
+        calls["value"] += 1
+        raise OSError("retirement unavailable")
+
+    monkeypatch.setattr(lanes, "_retire_terminal_entry", fail_retirement)
+    destination = lanes._quarantine_terminal(path, None, "retire-failure")
+
+    assert destination.exists()
+    assert path.exists()
+    assert calls["value"] == 2
+    assert "retirement=deferred" in capsys.readouterr().err

testing/tests/test_hermes_cli_records_edges.py

@@ -0,0 +1,230 @@
+"""Bounded-read and terminal-schema edge coverage for CLI lane records."""
+
+from __future__ import annotations
+
+import json
+import os
+from pathlib import Path
+
+import pytest
+
+from testing.tests.test_hermes_cli_support import (
+    _completed_result,
+    _pending_terminal_record,
+    lanes,
+)
+
+
+def test_bounded_reader_stops_at_eof_and_zero_limit(tmp_path: Path):
+    path = tmp_path / "payload"
+    path.write_bytes(b"abc")
+    descriptor = os.open(path, os.O_RDONLY)
+    try:
+        assert lanes._read_bounded(descriptor, 10) == b"abc"
+        os.lseek(descriptor, 0, os.SEEK_SET)
+        assert lanes._read_bounded(descriptor, 0) == b""
+    finally:
+        os.close(descriptor)
+
+
+def test_small_snapshot_rejects_nonregular_hardlinked_oversized_and_nonobject(
+    tmp_path: Path,
+    monkeypatch,
+):
+    directory = tmp_path / "directory"
+    directory.mkdir()
+    assert lanes._open_small_json_snapshot(directory) is None
+
+    original = tmp_path / "original"
+    original.write_text("{}", encoding="utf-8")
+    hardlink = tmp_path / "hardlink"
+    os.link(original, hardlink)
+    assert lanes._open_small_json_snapshot(hardlink) is None
+
+    oversized = tmp_path / "oversized"
+    oversized.write_text("{}", encoding="utf-8")
+    monkeypatch.setattr(lanes, "MAX_TERMINAL_RECORD_BYTES", 1)
+    assert lanes._open_small_json_snapshot(oversized) is None
+    monkeypatch.setattr(lanes, "MAX_TERMINAL_RECORD_BYTES", 1024 * 1024)
+
+    array = tmp_path / "array"
+    array.write_text("[]", encoding="utf-8")
+    assert lanes._open_small_json_snapshot(array) is None
+    malformed = tmp_path / "malformed"
+    malformed.write_bytes(b"\xff")
+    assert lanes._open_small_json_snapshot(malformed) is None
+
+
+def test_small_snapshot_rejects_path_replaced_after_read(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path = tmp_path / "record"
+    path.write_text("{}", encoding="utf-8")
+    real_stat = lanes.os.stat
+    calls = {"value": 0}
+
+    def changed_stat(target, *args, **kwargs):
+        result = real_stat(target, *args, **kwargs)
+        if target == path.name and kwargs.get("dir_fd") is not None:
+            calls["value"] += 1
+            if calls["value"] == 1:
+                return os.stat_result(
+                    (*result[:6], result.st_size + 1, *result[7:])
+                )
+        return result
+
+    monkeypatch.setattr(lanes.os, "stat", changed_stat)
+    assert lanes._open_small_json_snapshot(path) is None
+
+
+def test_recovery_snapshot_classifies_nonregular_and_open_failure(
+    tmp_path: Path,
+    monkeypatch,
+):
+    fifo = tmp_path / "fifo"
+    os.mkfifo(fifo)
+    snapshot = lanes._open_terminal_recovery_snapshot(fifo)
+    assert snapshot is not None
+    assert snapshot.invalid_reason == "non-regular"
+    snapshot.close()
+
+    path = tmp_path / "record"
+    path.write_text("{}", encoding="utf-8")
+    real_open = lanes.os.open
+
+    def fail_file_open(target, flags, *args, **kwargs):
+        if target == path.name:
+            raise OSError("denied")
+        return real_open(target, flags, *args, **kwargs)
+
+    monkeypatch.setattr(lanes.os, "open", fail_file_open)
+    snapshot = lanes._open_terminal_recovery_snapshot(path)
+    assert snapshot is not None
+    assert snapshot.invalid_reason == "open-failed"
+    snapshot.close()
+
+
+def test_recovery_snapshot_detects_identity_change_during_open(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path = tmp_path / "record"
+    path.write_text("{}", encoding="utf-8")
+    replacement = tmp_path / "replacement"
+    replacement.write_text('{"replacement":true}', encoding="utf-8")
+    real_open = lanes.os.open
+    swapped = {"value": False}
+
+    def swap_before_file_open(target, flags, *args, **kwargs):
+        if target == path.name and not swapped["value"]:
+            os.replace(replacement, path)
+            swapped["value"] = True
+        return real_open(target, flags, *args, **kwargs)
+
+    monkeypatch.setattr(lanes.os, "open", swap_before_file_open)
+    snapshot = lanes._open_terminal_recovery_snapshot(path)
+    assert snapshot is not None
+    assert snapshot.invalid_reason == "identity-changed-during-open"
+    snapshot.close()
+
+
+def test_recovery_snapshot_bounds_hardlinks_oversize_and_bad_payloads(
+    tmp_path: Path,
+    monkeypatch,
+):
+    original = tmp_path / "original"
+    original.write_text("{}", encoding="utf-8")
+    hardlink = tmp_path / "hardlink"
+    os.link(original, hardlink)
+    snapshot = lanes._open_terminal_recovery_snapshot(hardlink)
+    assert snapshot is not None and snapshot.invalid_reason == "hardlinked"
+    snapshot.close()
+
+    oversized = tmp_path / "oversized"
+    oversized.write_bytes(b"x" * 128)
+    monkeypatch.setattr(lanes, "MAX_TERMINAL_RECORD_BYTES", 64)
+    monkeypatch.setattr(lanes, "QUARANTINE_HASH_BYTES", 8)
+    snapshot = lanes._open_terminal_recovery_snapshot(oversized)
+    assert snapshot is not None and snapshot.invalid_reason == "oversized"
+    assert snapshot.prefix == b"x" * 8
+    snapshot.close()
+
+    monkeypatch.setattr(lanes, "MAX_TERMINAL_RECORD_BYTES", 1024 * 1024)
+    array = tmp_path / "array"
+    array.write_text("[]", encoding="utf-8")
+    snapshot = lanes._open_terminal_recovery_snapshot(array)
+    assert snapshot is not None and snapshot.invalid_reason == "non-object-payload"
+    snapshot.close()
+    malformed = tmp_path / "malformed"
+    malformed.write_bytes(b"\xff")
+    snapshot = lanes._open_terminal_recovery_snapshot(malformed)
+    assert snapshot is not None and snapshot.invalid_reason == "malformed-payload"
+    snapshot.close()
+
+
+def test_snapshot_loaders_return_empty_for_missing_or_wrong_identity(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    identity = lanes.TerminalIdentity("board", "task", 1, "pending")
+    missing = lanes.STATE_ROOT / "board" / "task.run-1.terminal.pending.json"
+    assert lanes._open_terminal_snapshot(missing, identity) is None
+    assert lanes._load_terminal_json(missing, identity) == {}
+    assert lanes._load_small_json(missing) == {}
+
+
+def test_candidate_persistence_skips_existing_sequence(tmp_path: Path):
+    state_file = tmp_path / "task.json"
+    state = {"board": "board", "task_id": "task", "run_id": 4}
+    route = lanes.Route("codex", "gpt", "high", "profile", "test", "test", 1, ())
+    first = lanes._candidate_path(state_file, 4, 1)
+    first.write_text("collision", encoding="utf-8")
+    path = lanes._persist_candidate(
+        state,
+        state_file,
+        _completed_result(),
+        route=route,
+        returncode=0,
+        goal_turn=2,
+    )
+    assert path.name.endswith("candidate-2.json")
+    assert state["candidate_sequence"] == 2
+
+
+@pytest.mark.parametrize(
+    "mutation",
+    [
+        lambda record: [],
+        lambda record: {**record, "board": ""},
+        lambda record: {**record, "expected_run_id": True},
+        lambda record: {**record, "metadata": []},
+        lambda record: {**record, "result": "not-json"},
+        lambda record: {**record, "result": "[]"},
+        lambda record: {
+            **record,
+            "result": json.dumps({**_completed_result(), "extra": True}),
+        },
+        lambda record: {
+            **record,
+            "result": json.dumps({**_completed_result(), "summary": ""}),
+        },
+        lambda record: {
+            **record,
+            "result": json.dumps({**_completed_result(), "tests_run": [1]}),
+        },
+    ],
+)
+def test_terminal_schema_rejects_each_malformed_boundary(mutation):
+    record = _pending_terminal_record("board", "task", 1, "done")
+    assert lanes._terminal_record_valid(mutation(record)) is False
+
+
+def test_terminal_schema_validates_optional_identity():
+    record = _pending_terminal_record("board", "task", 1, "done")
+    assert lanes._terminal_record_valid(record) is True
+    assert lanes._terminal_record_valid(
+        record,
+        lanes.TerminalIdentity("other", "task", 1, "pending"),
+    ) is False

testing/tests/test_hermes_cli_recovery_edges.py

@@ -0,0 +1,298 @@
+"""Recovery convergence and hidden-authority edge coverage."""
+
+from __future__ import annotations
+
+import hashlib
+import os
+import sys
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+
+from testing.tests.test_hermes_cli_support import (
+    _pending_terminal_record,
+    lanes,
+)
+
+
+class _Snapshot:
+    def __init__(self, document=None):
+        self.document = document
+        self.closed = 0
+
+    def close(self):
+        self.closed += 1
+
+
+def test_terminal_absence_distinguishes_present_missing_and_inaccessible(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path = tmp_path / "journal"
+    path.write_text("data", encoding="utf-8")
+    assert lanes._terminal_entry_absent(path) is False
+    path.unlink()
+    assert lanes._terminal_entry_absent(path) is True
+    monkeypatch.setattr(
+        lanes.os,
+        "open",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(PermissionError("denied")),
+    )
+    assert lanes._terminal_entry_absent(path) is False
+
+
+def _staged_path(root: Path, identity, document: dict) -> tuple[Path, Path]:
+    if identity.state in {"pending", "committed"}:
+        canonical = lanes._terminal_path(
+            lanes.state_path(identity.board, identity.task_id),
+            identity.run_id,
+            identity.state,
+        )
+    else:
+        canonical = lanes._terminal_evidence_path(identity, identity.state, document)
+    digest = hashlib.sha256(canonical.name.encode("utf-8")).hexdigest()[:16]
+    return root / identity.board / f".retire.{digest}.{'a' * 16}.0", canonical
+
+
+@pytest.mark.parametrize("state", ["prepared", "conflict"])
+def test_staged_authority_accepts_valid_evidence_states(
+    tmp_path: Path,
+    monkeypatch,
+    state: str,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    identity = lanes.TerminalIdentity("board", "task", 5, state)
+    document = _pending_terminal_record("board", "task", 5, "accepted")
+    document["kanban_state"] = state
+    staged, canonical = _staged_path(lanes.STATE_ROOT, identity, document)
+    staged.parent.mkdir(parents=True)
+    authority = lanes._staged_terminal_authority(staged, _Snapshot(document))
+    assert authority == (identity, canonical)
+
+
+def test_staged_authority_rejects_outside_nested_and_unknown_state(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    document = _pending_terminal_record("board", "task", 5, "accepted")
+    outside = tmp_path / ".retire.x"
+    assert lanes._staged_terminal_authority(outside, _Snapshot(document)) is None
+    nested = lanes.STATE_ROOT / "board" / "nested" / ".retire.name"
+    assert lanes._staged_terminal_authority(nested, _Snapshot(document)) is None
+    board = lanes.STATE_ROOT / "board"
+    board.mkdir(parents=True)
+    staged = board / f".retire.{'a' * 16}.{'b' * 16}.0"
+    document["kanban_state"] = "unknown"
+    assert lanes._staged_terminal_authority(staged, _Snapshot(document)) is None
+
+
+def test_restore_staged_authority_handles_every_first_writer_state(
+    tmp_path: Path,
+    monkeypatch,
+):
+    document = _pending_terminal_record("board", "task", 6, "accepted")
+    canonical = tmp_path / "canonical"
+    pending = lanes.TerminalIdentity("board", "task", 6, "pending")
+    calls = []
+    monkeypatch.setattr(
+        lanes,
+        "_persist_prepared_evidence",
+        lambda identity, value: calls.append(("prepared", identity, value)),
+    )
+    lanes._restore_staged_terminal_authority(pending, canonical, document)
+    assert calls[0][0] == "prepared"
+
+    monkeypatch.setattr(lanes, "_write_json_noreplace", lambda *_args: True)
+    committed = lanes.TerminalIdentity("board", "task", 6, "committed")
+    lanes._restore_staged_terminal_authority(committed, canonical, document)
+
+    monkeypatch.setattr(lanes, "_write_json_noreplace", lambda *_args: False)
+    monkeypatch.setattr(lanes, "_load_small_json", lambda _path: {})
+    monkeypatch.setattr(
+        lanes,
+        "_persist_conflict_evidence",
+        lambda *args: calls.append(("conflict", *args)),
+    )
+    lanes._restore_staged_terminal_authority(committed, canonical, document)
+    assert calls[-1][0] == "conflict"
+
+    prepared = lanes.TerminalIdentity("board", "task", 6, "prepared")
+    monkeypatch.setattr(lanes, "_terminal_evidence_valid", lambda *_args: False)
+    with pytest.raises(OSError, match="conflicting result"):
+        lanes._restore_staged_terminal_authority(prepared, canonical, document)
+
+
+def test_restore_staged_authority_accepts_identical_existing_evidence(
+    tmp_path: Path,
+    monkeypatch,
+):
+    document = _pending_terminal_record("board", "task", 7, "accepted")
+    document["kanban_state"] = "prepared"
+    identity = lanes.TerminalIdentity("board", "task", 7, "prepared")
+    monkeypatch.setattr(lanes, "_write_json_noreplace", lambda *_args: False)
+    monkeypatch.setattr(lanes, "_load_small_json", lambda _path: document)
+    monkeypatch.setattr(lanes, "_terminal_evidence_valid", lambda *_args: True)
+    lanes._restore_staged_terminal_authority(identity, tmp_path / "existing", document)
+
+
+def test_staging_recovery_bounds_missing_snapshots_and_restore_errors(
+    monkeypatch,
+):
+    path = Path("/tmp/staged")
+    monkeypatch.setattr(lanes, "_retirement_staging_paths", lambda: [path])
+    monkeypatch.setattr(lanes, "_open_terminal_recovery_snapshot", lambda _path: None)
+    assert lanes._recover_retirement_staging() == 0
+
+    identity = lanes.TerminalIdentity("board", "task", 8, "pending")
+    snapshot = _Snapshot(_pending_terminal_record("board", "task", 8, "accepted"))
+    monkeypatch.setattr(lanes, "_open_terminal_recovery_snapshot", lambda _path: snapshot)
+    monkeypatch.setattr(
+        lanes,
+        "_staged_terminal_authority",
+        lambda *_args: (identity, Path("/tmp/canonical")),
+    )
+    monkeypatch.setattr(
+        lanes,
+        "_restore_staged_terminal_authority",
+        lambda *_args: (_ for _ in ()).throw(OSError("restore")),
+    )
+    errors = []
+    monkeypatch.setattr(
+        lanes,
+        "_record_board_access_error",
+        lambda board, error: errors.append((board, str(error))),
+    )
+    assert lanes._recover_retirement_staging() == 0
+    assert errors == [("board", "restore")]
+    assert snapshot.closed == 1
+
+
+def test_drain_staging_ignores_disappearing_entries(monkeypatch):
+    class Vanished:
+        def stat(self, **_kwargs):
+            raise FileNotFoundError
+
+    monkeypatch.setattr(lanes, "_retirement_staging_paths", lambda: [Vanished()])
+    assert lanes._drain_retirement_staging() == 0
+
+
+def _prepared_path(tmp_path: Path, monkeypatch) -> tuple[Path, dict]:
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    pending = _pending_terminal_record("board", "task", 9, "accepted")
+    identity = lanes.TerminalIdentity("board", "task", 9, "pending")
+    path = lanes._persist_prepared_evidence(identity, pending)
+    return path, pending
+
+
+def test_prepared_recovery_defers_without_discarding_evidence(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path, _document = _prepared_path(tmp_path, monkeypatch)
+    monkeypatch.setattr(lanes, "_finalize_document_db", lambda *_args: "deferred")
+    assert lanes._recover_prepared_finalizations(object()) == 0
+    assert path.exists()
+
+
+def test_prepared_recovery_bounds_db_and_publication_exceptions(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path, _document = _prepared_path(tmp_path, monkeypatch)
+    errors = []
+    monkeypatch.setattr(
+        lanes,
+        "_record_board_access_error",
+        lambda board, error: errors.append((board, str(error))),
+    )
+    monkeypatch.setattr(
+        lanes,
+        "_finalize_document_db",
+        lambda *_args: (_ for _ in ()).throw(OSError("database")),
+    )
+    assert lanes._recover_prepared_finalizations(object()) == 0
+    assert errors[-1] == ("board", "database")
+    assert path.exists()
+
+    monkeypatch.setattr(lanes, "_finalize_document_db", lambda *_args: "committed")
+    monkeypatch.setattr(
+        lanes,
+        "_promote_prepared_evidence",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("publish")),
+    )
+    assert lanes._recover_prepared_finalizations(object()) == 0
+    assert errors[-1] == ("board", "publish")
+
+
+def test_pending_recovery_bounds_finalizer_errors_and_replacement_churn(
+    tmp_path: Path,
+    monkeypatch,
+    capsys,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    path = lanes._terminal_path(lanes.state_path("board", "task"), 10)
+    lanes.atomic_json(path, _pending_terminal_record("board", "task", 10, "accepted"))
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=object()))
+    errors = []
+    monkeypatch.setattr(
+        lanes,
+        "_record_board_access_error",
+        lambda board, error: errors.append((board, str(error))),
+    )
+    monkeypatch.setattr(
+        lanes,
+        "_finalize_terminal_record",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("finalize")),
+    )
+    assert lanes.recover_pending_finalizations() == 0
+    assert errors[-1] == ("board", "finalize")
+
+    def invalid(*_args, snapshot=None, **_kwargs):
+        snapshot.close()
+        return "invalid"
+
+    monkeypatch.setattr(lanes, "_finalize_terminal_record", invalid)
+    assert lanes.recover_pending_finalizations() == 0
+    assert "replacement churn deferred" in capsys.readouterr().err
+
+
+def test_pending_recovery_classifies_foreign_identity(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    path = lanes._terminal_path(lanes.state_path("board", "task"), 11)
+    lanes.atomic_json(path, _pending_terminal_record("other", "task", 11, "accepted"))
+    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=object()))
+    reasons = []
+
+    def quarantine(_path, _identity, reason, *, snapshot):
+        reasons.append(reason)
+        os.unlink(_path)
+
+    monkeypatch.setattr(lanes, "_quarantine_terminal", quarantine)
+    monkeypatch.setattr(lanes, "_recover_exact_run", lambda *_args: False)
+    assert lanes.recover_pending_finalizations() == 0
+    assert reasons == ["foreign-identity"]
+
+
+def test_pending_guard_rejects_invalid_run_and_inaccessible_or_bad_artifacts(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    assert lanes._has_pending_finalization("board", "task", True) is False
+    path = lanes._terminal_path(lanes.state_path("board", "task"), 12)
+    path.parent.mkdir(parents=True)
+    path.write_text("bad", encoding="utf-8")
+    real_stat = Path.stat
+
+    def denied(candidate, *args, **kwargs):
+        if candidate == path:
+            raise PermissionError("denied")
+        return real_stat(candidate, *args, **kwargs)
+
+    monkeypatch.setattr(Path, "stat", denied)
+    assert lanes._has_pending_finalization("board", "task", 12) is False

testing/tests/test_hermes_cli_retention_edges.py

@@ -0,0 +1,89 @@
+"""Retained terminal classification and filesystem-failure edge coverage."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from testing.tests.test_hermes_cli_support import (
+    _pending_terminal_record,
+    lanes,
+)
+
+
+class _Snapshot:
+    document = None
+    invalid_reason = "malformed"
+
+    def __init__(self):
+        self.closed = 0
+
+    def close(self):
+        self.closed += 1
+
+
+def test_retained_classifier_handles_missing_snapshot(tmp_path: Path, monkeypatch):
+    path = tmp_path / "task.run-1.terminal.committed.json"
+    monkeypatch.setattr(lanes, "_open_terminal_recovery_snapshot", lambda _path: None)
+    assert lanes._quarantine_invalid_retained_terminal(path) == (True, False)
+
+
+def test_retained_classifier_accepts_valid_committed_evidence(
+    tmp_path: Path,
+    monkeypatch,
+):
+    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
+    state_file = lanes.state_path("board", "task")
+    path = lanes._terminal_path(state_file, 2, "committed")
+    record = _pending_terminal_record("board", "task", 2, "accepted")
+    record["kanban_state"] = "committed"
+    lanes.atomic_json(path, record)
+    assert lanes._quarantine_invalid_retained_terminal(path) == (False, False)
+
+
+def test_retained_classifier_bounds_post_quarantine_stat_error(
+    tmp_path: Path,
+    monkeypatch,
+):
+    path = tmp_path / "task.run-3.terminal.committed.json"
+    snapshot = _Snapshot()
+    monkeypatch.setattr(
+        lanes,
+        "_open_terminal_recovery_snapshot",
+        lambda _path: snapshot,
+    )
+    monkeypatch.setattr(lanes, "_quarantine_terminal", lambda *_args, **_kwargs: path)
+    real_stat = Path.stat
+
+    def fail_selected(candidate, *args, **kwargs):
+        if candidate == path:
+            raise PermissionError("denied")
+        return real_stat(candidate, *args, **kwargs)
+
+    monkeypatch.setattr(Path, "stat", fail_selected)
+    assert lanes._quarantine_invalid_retained_terminal(path) == (True, False)
+    assert snapshot.closed == 1
+
+
+def test_gc_skips_symlink_board_and_disappearing_candidate(
+    tmp_path: Path,
+    monkeypatch,
+):
+    root = tmp_path / "lanes"
+    root.mkdir()
+    target = tmp_path / "target"
+    target.mkdir()
+    (root / "linked-board").symlink_to(target, target_is_directory=True)
+    board = root / "board"
+    board.mkdir()
+    candidate = board / "task.candidate-1.json"
+    candidate.write_text("{}", encoding="utf-8")
+    monkeypatch.setattr(lanes, "STATE_ROOT", root)
+    real_stat = Path.stat
+
+    def disappear(selected, *args, **kwargs):
+        if selected == candidate:
+            raise FileNotFoundError
+        return real_stat(selected, *args, **kwargs)
+
+    monkeypatch.setattr(Path, "stat", disappear)
+    assert lanes.gc_lane_artifacts() == 0