Fix bare except clauses in trade request exception handling

[Copilot]

Addresses code review feedback on PR #116 regarding exception handling anti-patterns.

Two bare except: clauses in the trade request queue view were catching BaseException, which includes system exceptions like KeyboardInterrupt and SystemExit that should propagate.

Changes:

• timetable/views.py lines 1123, 1158: Changed except: to except Exception: in fallback timetable_slug retrieval blocks

# Before
try:
    trade_request = TradeRequest.objects.get(pk=request_id)
    timetable_slug = trade_request.offered_allocation.timetable.slug
except:  # Catches everything including KeyboardInterrupt
    pass

# After
try:
    trade_request = TradeRequest.objects.get(pk=request_id)
    timetable_slug = trade_request.offered_allocation.timetable.slug
except Exception:  # Only catches normal exceptions
    pass

Both blocks are defensive fallbacks for extracting redirect context when not explicitly provided. The silent failure behavior is intentional - the code continues with a generic redirect if timetable_slug cannot be determined.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.