feat(phase9): add real corporate bond pipeline and fix rate mapping

.planning/phases/07-isda-quantitative-engine-mathematical-data-overhaul/.continue-here.md

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+---
+phase: 9-real-bond-data
+task: 5
+total_tasks: 6
+status: paused
+last_updated: 2026-04-03T13:43:26.520Z
+---
+
+<current_state>
+We have successfully implemented the "Real Corporate Bond Data Fetching Pipeline" (Phase 9) using an open-source Naver Finance scraper, substituted fake benchmark mappings with actual realistic ISINs (e.g. KR600538012C Hyundai Motor), and excluded `Rate` (SOFR/CD91D) from default simulations. We also fixed a fatal bug where empty Equity shock frames crashed the sqlite generation which 500'd the API. We are pausing to consolidate progress.
+</current_state>
+
+<completed_work>
+
+- Task 1: Built `bond_data_fetcher.py` and decoupled `Rate` classification. - Done
+- Task 2: Adjusted `create_security_master.py` to employ realistic ISINs (Samsung, Hyundai, KB, KTB). - Done
+- Task 3: Modified `market_risk_engine.py` to execute accurately over mixed asset types. - Done
+- Task 4: Solved API Internal Server Error caused by sqlite missing dataset. - Done
+</completed_work>
+
+<remaining_work>
+
+- Task 5: Push documentation to Gitea Wiki (currently blocked by git remote auth, drafted locally instead).
+</remaining_work>
+
+<decisions_made>
+
+- Decided to use hardcoded real ISINs linked to Naver Finance proxy representations because `pykrx` bond endpoints were broken, and generating/scraping raw issuance reports from DART/Seibro needs API Keys and is heavily captcha-gated.
+</decisions_made>
+
+<blockers>
+- Gitea Wiki Clone: Failed due to network remote reading error. Workaround: Formatted the progress summary into `docs/Wiki_Summary_Phase9.md` so the user can manually transfer or push it.
+</blockers>
+
+<context>
+The DB is fresh and valid. The FastAPI works locally at `:8000/api/matrix/baseline`. Data maps successfully.
+</context>
+
+<next_action>
+Start with: Reviewing the UI to ensure the user is completely satisfied with the ISIN bond rendering, then proceed to any remaining UI polishing or back-testing tasks.
+</next_action>