fix: replace bare except clauses with except Exception across codebase

[Kailigithub]

Summary

Replaces all 46 bare except: clauses with except Exception: across 15 files.

Bare except: catches all exceptions including KeyboardInterrupt and SystemExit, silently swallowing critical signals that should propagate. Using except Exception: is the standard Python best practice — it catches runtime errors while allowing system-level exceptions to pass through.

Files Changed

File	Count
llmcore.py	17
ga.py	8
simphtml.py	4
agentmain.py	3
frontends/qtapp.py	2
frontends/stapp.py	2
frontends/stapp2.py	2
assets/code_run_header.py	1
frontends/tgapp.py	1
frontends/wechatapp.py	1
memory/autonomous_operation_sop/helper.py	1
memory/ljqCtrl.py	1
memory/ui_detect.py	1
plugins/langfuse_tracing.py	1
reflect/scheduler.py	1

Verification

• All 15 modified files pass py_compile syntax check
• ruff check --select E722 reports 0 remaining bare except clauses
• Change is mechanical (except: → except Exception:), no logic altered