test: repair full suite — hang fix, stale-test updates, patch hygiene, timeout backstop

Suite went from 27 failures plus one permanent hang (never finished) to
1846 passed / 0 failed in ~85s, including under FORCE_COLOR.

- office_shutdown_lifecycle: construct WSHandler via the real __init__
  (helper) instead of hand-copied __new__ stubs that drift from the
  constructor (#11 added _runtime_status_sync_task and the stubs hung);
  the formerly-hanging wait now has a 5s wait_for.
- import-time patch hygiene: company_recruiter / company_reorg /
  engine_session_defaults replaced module-level permanent
  tempfile.TemporaryDirectory monkeypatching with paired
  setUpModule/tearDownModule, fixing order-dependent sqlite failures in
  transcript_pagination during full runs.
- stale tests updated to current product semantics: resume stubs use
  status="done" (failed is deliberately non-resumable), fix4 asserts the
  native review contract through build_company_work_item_contract,
  delivery fixture carries user_visible/feedback_scope=final, ownership
  doc names progress_log, session compression calls
  maybe_compact_session(force=True) explicitly, hard delete removes the
  work item row, parallel-isolation asserts delegate rebind and stubs
  _get_project_delegate, role update goes through OrgService on an
  editable custom org (plus read-only rejection case), collab_rpc patches
  the single os.name decision point instead of poisoning pathlib, codex
  no-pty builds inside the patch, identity-guard false positives reworded.
- cli_board actions rewritten against the real OfficeServiceFactory seam
  with a tempdir OPC_HOME (old direct-engine stubs were never consulted
  and the tests wrote into the real OPC home).
- cli_app assertions strip ANSI via _plain_output so a color-forcing
  shell (FORCE_COLOR) cannot break plain-text expectations.
- deleted never-runnable test_org_concurrency (pytest.mark.asyncio
  without the plugin, stdlib-only assertions) and three dead skipped
  filesystem-handoff tests.
- pyproject: dev extra (pytest, pytest-timeout) and a 300s per-test
  timeout backstop so a wedged test fails instead of stalling the suite.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_collaboration_rpc.py

@@ -131,11 +131,22 @@ class CollaborationRpcTransportTests(unittest.IsolatedAsyncioTestCase):
                 )
                 parser = cli_collab._build_parser()
                 opts = parser.parse_args(["delegate_work", "--args-json-file", str(args_path)])
-                with patch.object(cli_collab.os, "name", "nt"), patch.dict(
+                # Simulate os.name == "nt" only at the product's single decision
+                # point instead of patching the global os.name, which would turn
+                # every pathlib.Path in this process into a WindowsPath and break
+                # the POSIX file reads the test itself performs. The real
+                # rpc_env_configured() check still runs against the patched env,
+                # so the Windows guard branch is exercised end to end.
+                with patch.object(
+                    cli_collab,
+                    "_windows_external_rpc_env_configured",
+                    lambda: rpc_env_configured(),
+                ), patch.dict(
                     "os.environ",
                     server.client_env,
                     clear=True,
                 ):
+                    self.assertTrue(cli_collab._windows_external_rpc_env_configured())
                     tool_args = cli_collab._collect_tool_args(opts)
                     payload, is_error = await cli_collab._dispatch(opts.tool, tool_args)
         finally: