Add 'Compute now' button to job detail File & Geometry card

POST /jobs/{id}/analyse clears the stl_cache entry and re-runs trimesh,
then redirects back to the detail page. Button hidden for .gcode files.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/routers/ui.py

@@ -21,7 +21,7 @@ from app.models.todo import Todo
 from app.constants import COLORS, MATERIALS
 from app.filamentdb import available_colors, available_materials, get_stock
 from app.stl import get_stl_dir, list_stl_files
-from app.stl_analysis import analyse, get_cache_map
+from app.stl_analysis import analyse, get_cache_map  # noqa: F401 used in job_detail route
 
 router = APIRouter()
 templates = Jinja2Templates(directory="app/templates")
@@ -222,6 +222,18 @@ def job_detail(job_id: int, request: Request, db: Session = Depends(get_db)):
     })
 
 
+@router.post("/jobs/{job_id}/analyse")
+def analyse_job_file(job_id: int, db: Session = Depends(get_db)):
+    from fastapi import HTTPException
+    job = db.query(PrintJob).filter(PrintJob.id == job_id).first()
+    if not job or not job.file_name:
+        raise HTTPException(status_code=404, detail="Job or file not found")
+    db.query(StlCache).filter_by(filename=job.file_name).delete()
+    db.commit()
+    analyse(job.file_name, db)
+    return RedirectResponse(url=f"/jobs/{job_id}", status_code=HTTP_303_SEE_OTHER)
+
+
 @router.post("/jobs/{job_id}/log")
 def add_job_log(job_id: int, message: str = Form(...), db: Session = Depends(get_db)):
     db.add(JobLog(job_id=job_id, message=message.strip()))