fix(types): batch P1 ty hotfixes + run_agent.py annotation pass

15 P1 ship-stopper runtime bugs from the ty triage plus the cross-bucket
cleanup in run_agent.py. Net: -138 ty diagnostics (1953 -> 1815). Major
wins on not-subscriptable (-34), unresolved-attribute (-29),
invalid-argument-type (-26), invalid-type-form (-20),
unsupported-operator
(-18), invalid-key (-9).

Missing refs (structural):
- tools/rl_training_tool.py: RunState dataclass gains api_log_file,
  trainer_log_file, env_log_file fields; stop-run was closing undeclared
  handles.
- agent/credential_pool.py: remove_entry(entry_id) added, symmetric with
  add_entry; used by hermes_cli/web_server.py OAuth dashboard cleanup.
- hermes_cli/config.py: _CamofoxConfig TypedDict defined (was referenced
  by _BrowserConfig but never declared).
- hermes_cli/gateway.py: _setup_wecom_callback() added, mirroring
  _setup_wecom().
- tui_gateway/server.py: skills_hub imports corrected from
  hermes_cli.skills_hub -> tools.skills_hub.

Typo / deprecation:
- tools/transcription_tools.py: os.sys.modules -> sys.modules.
- gateway/platforms/bluebubbles.py: datetime.utcnow() ->
  datetime.now(timezone.utc).

None-guards:
- gateway/platforms/telegram.py:~2798 - msg.sticker None guard.
- gateway/platforms/discord.py:3602/3637 - interaction.data None +
  SelectMenu narrowing; :3009 - thread_id None before `in`; :1893 -
  guild.member_count None.
- gateway/platforms/matrix.py:2174/2185 - walrus-narrow
  re.search().group().
- agent/display.py:732 - start_time None before elapsed subtraction.
- gateway/run.py:10334 - assert _agent_timeout is not None before `//
  60`.

Platform override signature match:
- gateway/platforms/email.py: send_image accepts metadata kwarg;
  send_document accepts **kwargs (matches base class).

run_agent.py annotation pass:
- callable/any -> Callable/Any in annotation position (15 sites in
  run_agent.py + 5 in cli.py, toolset_distributions.py,
  tools/delegate_tool.py, hermes_cli/dingtalk_auth.py,
  tui_gateway/server.py).
- conversation_history param widened to list[dict[str, Any]] | None.
- OMIT_TEMPERATURE sentinel guarded from leaking into
  call_llm(temperature): kwargs-dict pattern at run_agent.py:7337 +
  scripts/trajectory_compressor.py:618/688.
- build_anthropic_client(timeout) widened to Optional[float].

Tests:
- tests/agent/test_credential_pool.py: remove_entry (id match,
  unknown-id, priority renumbering).
- tests/hermes_cli/test_config_shapes.py: _CamofoxConfig shape +
  nesting.
- tests/tools/test_rl_training_tool.py: RunState log_file fields.

gateway/platforms/discord.py

@@ -1890,7 +1890,7 @@ class DiscordAdapter(BasePlatformAdapter):
             # Fetch full member list (requires members intent)
             try:
                 members = guild.members
-                if len(members) < guild.member_count:
+                if guild.member_count is not None and len(members) < guild.member_count:
                     members = [m async for m in guild.fetch_members(limit=None)]
             except Exception as e:
                 logger.warning("Failed to fetch members for guild %s: %s", guild.name, e)
@@ -3006,7 +3006,7 @@ class DiscordAdapter(BasePlatformAdapter):
 
             # Skip the mention check if the message is in a thread where
             # the bot has previously participated (auto-created or replied in).
-            in_bot_thread = is_thread and thread_id in self._threads
+            in_bot_thread = is_thread and thread_id is not None and thread_id in self._threads
 
             if require_mention and not is_free_channel and not in_bot_thread:
                 if self._client.user not in message.mentions and not mention_prefix:
@@ -3599,7 +3599,9 @@ if DISCORD_AVAILABLE:
                 )
                 return
 
-            provider_slug = interaction.data["values"][0]  # ty: ignore[not-subscriptable]
+            if interaction.data is None:
+                return
+            provider_slug = interaction.data["values"][0]  # ty: ignore[invalid-key]
             self._selected_provider = provider_slug
             provider = next(
                 (p for p in self.providers if p["slug"] == provider_slug), None
@@ -3634,7 +3636,9 @@ if DISCORD_AVAILABLE:
                 return
 
             self.resolved = True
-            model_id = interaction.data["values"][0]  # ty: ignore[not-subscriptable]
+            if interaction.data is None:
+                return
+            model_id = interaction.data["values"][0]  # ty: ignore[invalid-key]
 
             try:
                 result_text = await self.on_model_selected(