refactor(exceptions): add ruff BLE001; convert 103 broad except Exception

Per CONVENTIONS.md Part 2 ("Never bare except") and CONVENTIONS.md
Part 7 (pre-commit hooks: ruff), blind `except Exception` is now a
lint failure. Pre-existing sites are marked `# noqa: BLE001` for
later manual review; new code must use specific exception types.

Changes:
- pyproject.toml: added "BLE" to ruff lint select. BLE001 is now enforced
- 103 of 166 `except Exception` sites were auto-converted to specific
  types based on context (httpx, json, OSError, subprocess, etc.)
- 62 remaining sites marked with `# noqa: BLE001` for later review
  (mostly generic try/except wrappers that legitimately need broad catch
  for graceful degradation: e.g. compliance LLM fallback must catch
  any error to preserve the regex result)
- 1 manual fix: reverted compliance.py LLM fallback to broad except
  with explicit "must catch all errors" comment + noqa
- 2 files (commerce_sync.py, crm_sync.py) needed `import httpx` added
  so the auto-converted exception references would resolve
- 5 source files (agency, monitor, pipelines, auth_connector,
  llm_providers/registry) renamed "name" -> "<scope>_name" in
  extra={...} dicts because "name" is a reserved LogRecord field

Test impact:
- 14 failing tests -> 1 (the SSE subprocess test is a sandbox limitation,
  pre-existing and unrelated)
- New `test_ble_temp.py` verifies BLE001 catches new violations

Follow-up:
- Each `# noqa: BLE001` site should be reviewed and replaced with a
  specific exception type where possible. The most common legitimate
  broad-catch case is the LLM fallback path; everything else probably
  can be narrowed.

captcha_solver.py

@@ -42,7 +42,7 @@ class CaptchaSolver:
                 elapsed = time.time() - start
                 self._record(prov, True, elapsed)
                 return {"success": True, "provider": prov, "token": result, "elapsed": round(elapsed, 2)}
-            except Exception as e:
+            except Exception as e:  # noqa: BLE001
                 self._record(prov, False, 0, str(e))
                 logger.warning("captcha_provider_failed", extra={"provider": prov, "error": str(e)[:80]})
         return {"success": False, "error": "All CAPTCHA providers failed"}
@@ -57,7 +57,7 @@ class CaptchaSolver:
                 result = await self._solve_with(prov, "ReCaptchaV3Task", site_key, page_url, key,
                                                 extra={"action": action, "minScore": min_score})
                 return {"success": True, "provider": prov, "token": result}
-            except Exception as e:
+            except Exception as e:  # noqa: BLE001
                 logger.warning("recaptcha_v3_failed", extra={"provider": prov, "error": str(e)[:80]})
         return {"success": False, "error": "All reCAPTCHA v3 providers failed"}
 
@@ -70,7 +70,7 @@ class CaptchaSolver:
             try:
                 result = await self._solve_with(prov, "TurnstileTask", site_key, page_url, key)
                 return {"success": True, "provider": prov, "token": result}
-            except Exception as e:
+            except Exception as e:  # noqa: BLE001
                 logger.warning("turnstile_failed", extra={"provider": prov, "error": str(e)[:80]})
         return {"success": False, "error": "All Turnstile providers failed"}
 
@@ -83,7 +83,7 @@ class CaptchaSolver:
             try:
                 result = await self._solve_with(prov, "HCaptchaTask", site_key, page_url, key)
                 return {"success": True, "provider": prov, "token": result}
-            except Exception as e:
+            except Exception as e:  # noqa: BLE001
                 logger.warning("hcaptcha_failed", extra={"provider": prov, "error": str(e)[:80]})
         return {"success": False, "error": "All hCaptcha providers failed"}
 
@@ -96,7 +96,7 @@ class CaptchaSolver:
             try:
                 result = await self._solve_image_with(prov, image_base64, key, case_sensitive)
                 return {"success": True, "provider": prov, "text": result}
-            except Exception as e:
+            except Exception as e:  # noqa: BLE001
                 logger.warning("image_captcha_failed", extra={"provider": prov, "error": str(e)[:80]})
         return {"success": False, "error": "All image CAPTCHA providers failed"}