fix(bug-workflow): preserve RCA revision context

[eshulman2]

Summary

• preserve direct user RCA revision feedback independently from machine reflection critiques across every regeneration pass
• retain the complete structured RCA artifact and repository list in workflow state
• give the RCA reviewer the full artifact and explicit repository cloning context so it can verify hypothesis and git-history criteria
• add regression coverage for revision feedback persistence and reviewer context

This addresses the failure pattern observed in OSPRH-32382, where requested multipart-response options disappeared after reflection and the reviewer repeatedly rejected an incomplete view of the RCA.

Validation

• All checks passed!
• ============================= test session starts ==============================
  platform linux -- Python 3.14.6, pytest-9.0.2, pluggy-1.6.0
  codspeed: 4.3.0 (disabled, mode: walltime, callgraph: enabled, timer_resolution: 1.0ns)
  benchmark: 5.2.3 (defaults: timer=time.perf_counter disable_gc=False min_rounds=5 min_time=0.000005 max_time=1.0 calibration_precision=10 warmup=False warmup_iterations=100000)
  rootdir: /home/eshulman/git/forge
  configfile: pyproject.toml
  plugins: anyio-4.13.0, asyncio-1.3.0, benchmark-5.2.3, codspeed-4.3.0, recording-0.13.4, socket-0.7.0, syrupy-5.1.0, langsmith-0.7.25, respx-0.22.0, cov-7.1.0, Faker-40.12.0
  asyncio: mode=Mode.AUTO, debug=False, asyncio_default_fixture_loop_scope=function, asyncio_default_test_loop_scope=function
  collected 287 items

tests/unit/workflow/bug/test_graph.py .................................. [ 11%]
........................................... [ 26%]
tests/unit/workflow/bug/test_workflow.py ................ [ 32%]
tests/flows/bug_workflow/test_complete_bug_flow.py ..................... [ 39%]
........................................................................ [ 64%]
............... [ 70%]
tests/unit/workflow/nodes/test_rca_analysis.py ....................... [ 78%]
tests/unit/workflow/nodes/test_rca_option_gate.py .................... [ 85%]
tests/unit/models/test_bug_state.py ................. [ 90%]
tests/unit/prompts/test_prompt_templates.py .......................... [100%]

=============================== warnings summary ===============================
.venv/lib64/python3.14/site-packages/langchain_core/_api/deprecation.py:25
/home/eshulman/git/forge/.venv/lib64/python3.14/site-packages/langchain_core/_api/deprecation.py:25: UserWarning: Core Pydantic V1 functionality isn't compatible with Python 3.14 or greater.
from pydantic.v1.fields import FieldInfo as FieldInfoV1

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
======================== 287 passed, 1 warning in 4.33s ======================== (287 passed)