Sweep of `ruff check . --select F821 --target-version py311`: 2,234 hits. 2,201 are left
alone on purpose: tui_gateway (2,169; bind_module rebinds bodies onto server.py globals,
all names verified to resolve there), the Feishu adapter (27; globals().update() SDK
binding) and the godmode script (5; dead standalone script). The other 33 were all
genuine defects. No lint config change; no TYPE_CHECKING escape hatches — every
annotation names a real, imported type; ty on the touched files: 0 new diagnostics.
- gateway/slash_commands.py: HISTORY_UNREADABLE never imported after #102117
→ NameError on the /btw error branch (same one-liner as #102952).
- gateway/platforms/whatsapp_common.py: `-> Path` return annotation with no Path
import (the body uses `_Path`). Never raised at runtime thanks to
`from __future__ import annotations`, but `typing.get_type_hints()` and ty
both fail on it.
- gateway/run.py: ActivityProvenance imported at module level
(agent.session_activity has no gateway deps); stringly annotation and the
lazy in-function import are gone.
- tools/patch_parser.py: PatchResult imported at module level; real return
annotation. The "avoid circular import" lazy import guarded a cycle that
does not exist (file_operations_common never imports patch_parser).
- gateway/platforms/helpers.py: base.py imports helpers at module level, so
MessageEvent cannot be named here; TextBatchAggregator only reads .text and
.source, so it is typed by a BatchableEvent Protocol that MessageEvent
satisfies structurally.
- tools/mcp_tool_sampling.py: mcp_tool imports this module, so MCPServerTask
cannot be named here; ElicitationHandler only reads
owner._pending_call_context, typed by an ElicitationOwner Protocol.
- plugins/platforms/sms/adapter.py: aiohttp is an optional dep ([messaging] extra) →
module-level try/except ImportError binding `aiohttp = web = None`, the pattern the
homeassistant / webhook / whatsapp_cloud adapters already use. Retires three lazy
in-function imports and the `_aiohttp_available()` wrapper; `_handle_webhook` typed
`web.Request -> web.Response`.
- plugins/platforms/teams/summary_writer.py: plain module-level `import httpx` — httpx is a
hard core dependency (pyproject `httpx[socks]==0.28.1`), so the lazy import and the
"imported on every CLI start" docstring premise were both wrong (plugin discovery never
imports this module; it is reached only via the Teams adapter / meeting pipeline).
Tests:
- tests/hermes_cli/test_config.py: a test body orphaned by the wave-1 prune
(6b81590c55) sat inside the class as dead code with self/tmp_path unbound
— header restored, so the v11→12 custom_providers migration is covered.
- tests/tools/test_mcp_tool.py: @staticmethod recursing on `self` in the
win32 branch; call portalocker directly.
- tests/test_background_review_list_shapes.py: main() still ran 3 pruned tests.
- tests/agent/test_cursor_optimizations_parity.py: bench() used names only
imported inside a sibling test.
- GatewayRunner / FeishuAdapter / Dict / Optional: missing imports.
`summarize_background_review_actions` was structured on the assumption
that every parsed tool response is a fully-typed dict-of-fields. In
practice the memory/skill tools — and their wrappers over Mem0 OSS and
the skill_manage MCP server — sometimes serialize `_change` as a list
or scalar, and clamp `operations` to a single string when the field
came in via a partial JSON bridge.
The original code did the equivalent of:
change = data.get("_change", {})
change.get("description", "")
so when `_change` was a list the inner .get crashed with
`AttributeError: 'list' object has no attribute 'get'`, every ~10
turns the user saw the entire background review collapse.
Three defensive guards in summarize_background_review_actions:
- `call_details.get(tcid, {})` → `call_details.get(tcid) or {}` plus
`isinstance(detail, dict)` coercion. Catches stale scalar/None
values when a fork inherits partial state from a stale tool_call_id.
- `operations = detail.get("operations") or []` → `isinstance(ops_raw, list)`
coerce, then per-entry isinstance check before `.get()`. Skips
non-dict items without raising; an entire surrounding review no
longer goes down because one entry was malformed.
- `change = data.get("_change", {})` → `isinstance(change_raw, dict)`
coerce. The originally-reported crash class for skill_manage with
list-shaped _change now falls through to the generic summary path.
And the caller in `_run_review_in_thread` is wrapped in a try/except
that maps any residual summarize exception to `actions = []` and
emits a 'partial results' warning, so even an entirely unanticipated
shape won't take down the outer review — the user only sees
'Background memory/skill review failed' instead of the prior hard
crash that lost every successful action the fork had completed.
Tests: tests/test_background_review_list_shapes.py — standalone
pytest-free runner, 7/7 PASS:
a_change_as_list_does_not_crash (originally-reported shape)
a_change_as_int_does_not_crash (scalar fallback)
b_operations_as_string_treated_as_empty
b_operations_as_none_treated_as_empty
c_operations_contains_non_dict_entries (verbose-mode per-entry filter)
d_detail_non_dict_replaced_with_empty
e_call_defends_via_try_except (structural anchor)
Refs NousResearch/hermes-agent#59437
kshitijk4poor