fix: re-export pruned names for tests that mock.patch or from-import them

The mechanical ruff prune in the previous commit removed several names that
`appear` unused inside their defining module but are external test/runtime
anchors:

  run_agent
    OpenAI, _SafeWriter
    get_tool_definitions, handle_function_call, check_toolset_requirements
    estimate_request_tokens_rough
    DEFAULT_AGENT_IDENTITY, build_context_files_prompt,
    build_environment_hints, build_nous_subscription_prompt
    _is_destructive_command, _extract_parallel_scope_path, _paths_overlap,
    _append_subdir_hint_to_multimodal, _trajectory_normalize_msg

  tools/web_tools
    Firecrawl, _get_firecrawl_client

These get accessed via four channels that are invisible to ruff's
in-module usage analysis:

  1. `mock.patch('module.name', ...)` in tests — resolves the attribute
     lazily, so `pytest --collect-only` passes even when the name is
     gone, but every test using the patch fails at runtime with
     AttributeError.
  2. `from run_agent import X` in production siblings (agent/transports
     /codex.py, etc.).
  3. The `_ra().X` indirection pattern in agent/system_prompt.py et al.
     — explicitly documented ("Many tests patch('run_agent.load_soul_md')")
     to preserve the patch contract.
  4. `from tools.web_tools import _get_firecrawl_client` in tests.

Each re-added import carries an explicit `# noqa: F401` with a comment
naming the channel, so future cleanup passes won't strip them again.

run_agent.py

@@ -66,6 +66,8 @@ from hermes_constants import get_hermes_home
 # OpenAI lazy proxy + safe stdio + proxy URL helpers — see agent/process_bootstrap.py.
 # `OpenAI` is re-exported here so `patch("run_agent.OpenAI", ...)` in tests works.
 from agent.process_bootstrap import (
+    OpenAI,  # noqa: F401  # re-exported for tests that mock.patch("run_agent.OpenAI")
+    _SafeWriter,  # noqa: F401  # re-exported for tests that `from run_agent import _SafeWriter`
     _get_proxy_for_base_url,
 )
 from agent.iteration_budget import IterationBudget
@@ -89,7 +91,10 @@ else:
 
 # Import our tool system
 from model_tools import (
+    get_tool_definitions,  # noqa: F401  # re-exported for tests that mock.patch("run_agent.get_tool_definitions")
     get_toolset_for_tool,
+    handle_function_call,  # noqa: F401  # re-exported for tests that mock.patch("run_agent.handle_function_call")
+    check_toolset_requirements,  # noqa: F401  # re-exported for tests that mock.patch("run_agent.check_toolset_requirements")
 )
 from tools.terminal_tool import cleanup_vm
 from tools.interrupt import set_interrupt as _set_interrupt
@@ -101,13 +106,21 @@ from agent.memory_manager import sanitize_context
 from agent.error_classifier import FailoverReason
 from agent.redact import redact_sensitive_text
 from agent.model_metadata import (
+    estimate_request_tokens_rough,  # noqa: F401  # re-exported for tests that mock.patch("run_agent.estimate_request_tokens_rough")
     is_local_endpoint,
 )
 from agent.usage_pricing import normalize_usage
 # Re-exported for tests that monkeypatch these symbols on run_agent.
 from agent.context_compressor import ContextCompressor  # noqa: F401
 from agent.retry_utils import jittered_backoff  # noqa: F401
-from agent.prompt_builder import build_skills_system_prompt, load_soul_md  # noqa: F401
+from agent.prompt_builder import (  # noqa: F401  # re-exported via _ra() / mock.patch("run_agent.<name>") / from run_agent import <name>
+    DEFAULT_AGENT_IDENTITY,
+    build_skills_system_prompt,
+    build_context_files_prompt,
+    build_environment_hints,
+    build_nous_subscription_prompt,
+    load_soul_md,
+)
 from agent.process_bootstrap import _get_proxy_from_env  # noqa: F401
 from agent.message_sanitization import (  # noqa: F401
     _SURROGATE_RE,
@@ -143,10 +156,15 @@ from agent.trajectory import (
 )
 from agent.tool_dispatch_helpers import (
     _should_parallelize_tool_batch,
+    _is_destructive_command,  # noqa: F401  # re-exported for tests that access `run_agent._is_destructive_command`
+    _extract_parallel_scope_path,  # noqa: F401  # re-exported for tests that `from run_agent import _extract_parallel_scope_path`
+    _paths_overlap,  # noqa: F401  # re-exported for tests that `from run_agent import _paths_overlap`
     _is_multimodal_tool_result,
     _multimodal_text_summary,
+    _append_subdir_hint_to_multimodal,  # noqa: F401  # re-exported for tests that `from run_agent import _append_subdir_hint_to_multimodal`
     _extract_file_mutation_targets,
     _extract_error_preview,
+    _trajectory_normalize_msg,  # noqa: F401  # re-exported for tests that `from run_agent import _trajectory_normalize_msg`
 )
 from utils import atomic_json_write, base_url_host_matches, base_url_hostname
 

tools/web_tools.py

@@ -51,7 +51,9 @@ import httpx  # noqa: F401 — kept at module top so tests can patch tools.web_t
 if TYPE_CHECKING:
     from firecrawl import Firecrawl  # noqa: F401 — type hints only
 from plugins.web.firecrawl.provider import (
+    Firecrawl,  # noqa: F401  # re-exported for tests that mock.patch("tools.web_tools.Firecrawl")
     _firecrawl_backend_help_suffix,
+    _get_firecrawl_client,  # noqa: F401  # re-exported for tests that `from tools.web_tools import _get_firecrawl_client`
     _get_firecrawl_gateway_url,
     _is_tool_gateway_ready,
     check_firecrawl_api_key,