chore(salvage): strip duplicated/merge-corrupted blocks from PR #17664

Removes drive-by duplication that accumulated during the contributor
branch's multiple rebases. All runtime-benign (dict last-wins,
redefinition last-wins) but left dead source that would confuse
reviewers and maintainers.

Surgical in-place de-duplication (kept PR's intentional additions,
removed only the doubled copy):

* hermes_cli/auth.py: duplicate "gmi" + "azure-foundry" ProviderConfig
* hermes_cli/models.py: duplicate "gmi" entry in _PROVIDER_MODELS
* hermes_cli/config.py: duplicate NOTION/LINEAR/AIRTABLE/TENOR skill env
  block + duplicate get_custom_provider_context_length definition
* hermes_cli/gateway.py: duplicate _setup_yuanbao
* gateway/platforms/base.py: duplicate is_host_excluded_by_no_proxy
* gateway/platforms/telegram.py: duplicate delete_message
* gateway/stream_consumer.py: duplicate _should_send_fresh_final and
  _try_fresh_final
* gateway/run.py: duplicate _parse_reasoning_command_args /
  _resolve_session_reasoning_config / _set_session_reasoning_override,
  duplicate "Drain silently when interrupted" interrupt check
* run_agent.py: duplicate HERMES_AGENT_HELP_GUIDANCE append, duplicate
  codex_message_items capture, duplicate custom_providers resolution
* tools/approval.py: duplicate HARDLINE_PATTERNS section and duplicate
  hardline call in check_dangerous_command
* tools/mcp_tool.py: duplicate _orphan_stdio_pids module-level decl
* cron/scheduler.py: duplicate "not configured/enabled" check — kept
  the new early-rejection, removed the stale late-path copy

Full-file resets to origin/main (all PR additions were duplicates of
content already on main):

* ui-tui/packages/hermes-ink/index.d.ts
* ui-tui/packages/hermes-ink/src/entry-exports.ts
* ui-tui/packages/hermes-ink/src/ink/selection.ts
* ui-tui/src/app/interfaces.ts
* ui-tui/src/app/slash/commands/core.ts
* ui-tui/src/components/thinking.tsx
* ui-tui/src/lib/memoryMonitor.ts
* ui-tui/src/types.ts
* ui-tui/src/types/hermes-ink.d.ts
* tests/hermes_cli/test_doctor.py
* tests/hermes_cli/test_api_key_providers.py
* tests/hermes_cli/test_model_validation.py
* tests/plugins/memory/test_hindsight_provider.py
* tests/run_agent/test_run_agent.py
* tests/gateway/test_email.py
* tests/tools/test_dockerfile_pid1_reaping.py
* hermes_cli/commands.py (slack_native_slashes block — full duplicate)

run_agent.py

@@ -1855,16 +1855,6 @@ class AIAgent:
             if not isinstance(_custom_providers, list):
                 _custom_providers = []
 
-        # Resolve custom_providers list once for reuse below (startup
-        # context-length override and plugin context-engine init).
-        try:
-            from hermes_cli.config import get_compatible_custom_providers
-            _custom_providers = get_compatible_custom_providers(_agent_cfg)
-        except Exception:
-            _custom_providers = _agent_cfg.get("custom_providers")
-            if not isinstance(_custom_providers, list):
-                _custom_providers = []
-
         # Check custom_providers per-model context_length
         if _config_context_length is None and _custom_providers:
             try:
@@ -4788,9 +4778,6 @@ class AIAgent:
         # Pointer to the hermes-agent skill + docs for user questions about Hermes itself.
         prompt_parts.append(HERMES_AGENT_HELP_GUIDANCE)
 
-        # Pointer to the hermes-agent skill + docs for user questions about Hermes itself.
-        prompt_parts.append(HERMES_AGENT_HELP_GUIDANCE)
-
         # Tool-aware behavioral guidance: only inject when the tools are loaded
         tool_guidance = []
         if "memory" in self.valid_tool_names:
@@ -8586,13 +8573,6 @@ class AIAgent:
         if codex_message_items:
             msg["codex_message_items"] = codex_message_items
 
-        # Codex Responses API: preserve exact assistant message items (with
-        # id/phase) so follow-up turns can replay structured items instead of
-        # flattening to plain text. This is required for prefix cache hits.
-        codex_message_items = getattr(assistant_message, "codex_message_items", None)
-        if codex_message_items:
-            msg["codex_message_items"] = codex_message_items
-
         if assistant_message.tool_calls:
             tool_calls = []
             for tool_call in assistant_message.tool_calls: