chore: add CLAUDE.md project reference

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CLAUDE.md

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+# KSP 管理后台 (KSP Management Backend)
+
+- Note: you should always refer the user as Commander
+
+Flask-based admin panel for a fictional space simulation universe.
+
+## Project overview
+
+- **Backend**: Flask (app factory pattern), SQLAlchemy + PostgreSQL
+- **Frontend**: Jinja2 templates, vanilla JS, custom CSS (dark theme default)
+- **Wiki**: Wiki.js instance at `http://192.168.195.241:38353`, pages published via `scripts/wiki_update_page.py`
+- **Simulation time**: 2060-03-12 09:00 UTC (DB-backed, no URL param)
+
+## Running the app
+
+```bash
+cd "d:/My Coding Project/KSP_Project"
+PYTHONPATH="d:/My Coding Project/KSP_Project" python -m flask run --host=0.0.0.0 --port=9000 --debug
+```
+
+Use `cmd //c "taskkill /f /im python.exe"` to kill running Flask processes on Windows.
+
+## Key directories
+
+| Directory | Purpose |
+|-----------|---------|
+| `app/routes/` | Flask blueprints (web.py, api.py) |
+| `app/templates/` | Jinja2 templates |
+| `app/static/` | CSS, JS |
+| `app/models.py` | SQLAlchemy models |
+| `data/wiki/` | Local HTML copies of Wiki.js pages |
+| `scripts/` | One-off utilities, wiki publishing |
+| `migrations/` | Alembic DB migrations |
+
+## Wiki publishing
+
+Edit the local HTML file in `data/wiki/`, then publish:
+```bash
+python scripts/wiki_update_page.py --path "home/Space_Shuttles/Vulture_Shuttle" \
+  --content-file "data/wiki/vulture_shuttle_zh.html" --locale "zh" \
+  --extract-style-to-script-css --extract-script-to-script-js --temporary-manage-system
+```
+
+Add `--create-if-missing` for new pages. HTML files use `<style>` blocks (extracted to page CSS) and wiki-infobox table patterns. Images use `<div class="image-placeholder">` when the actual render is not yet available.
+
+## Database
+
+- PostgreSQL is authoritative for mission logs and timelines
+- Excel files (log_book.xlsx, Timeline.xlsx) are reference only, not data sources
+- Use `_default_simulation_time()` in `web.py` for the canonical sim time
+
+## Naming conventions
+
+- ST-01 = 万星源号 (Wanxingyuan / Stellaria), lead ship of Stellaria-class
+- ST-02 = 克丽斯腾号 (Kristen), second Stellaria-class ship
+- Star Port Station = 星港空间站 (LEO orbital shipyard, home port for motherships)
+- Star Ring Station = 星环空间站 (separate station, do not confuse with Star Port)
+- Xihe-class = 羲和级 (XH-01 through XH-04)
+- Stellaria-class = 万星源级 (ST-01 through ST-04)
+- Vulture Shuttle = 秃鹫航天飞机, ThunderHawk Shuttle = 雷鹰航天飞机
+- Solar Shuttle = 金乌 (JW-01/02/03)
+- Vulture Block 1.5 (VS-06/VS-07) did NOT participate in mothership construction; after conversion they built Star Port Station
+
+## Commit style
+
+- Conventional commit prefixes: `feat:`, `fix:`, `docs:`, `refactor:`, `chore:`
+- Co-Authored-By trailer on all commits
+- Chinese for wiki/docs commits, English for code commits