feat: improve decision conditions with param-based JS evaluation

- Add stripTemplateVarsForJS() to convert {{var}} outside quotes to bare JS variable names, enabling direct param/export access in condition expressions
- Add normalizeBoolStringsForJS() to convert string 'true'/'false' to actual booleans for correct JS truthiness evaluation
- Auto-classify asset types in db_import_asset_from_file() and default source to 'web' when empty
- Improve table display with terminal auto-width detection via term.GetSize(), custom column weights, and display name aliases (status_code → status)
- Change default --width to 0 (auto-detect) with weighted column distribution and minimum header-based sizing
- Add comprehensive tests for param-based conditions and JSON asset imports
- Update test data to use direct param references in conditions instead of exports

test/testdata/workflows/test-decision-conditions.yaml

@@ -14,15 +14,13 @@ params:
     default: "3"
 
 steps:
-  # Step 1: Single condition match with function
+  # Step 1: Single condition match — uses params directly (no exports needed)
   - name: check-target
     type: bash
     command: echo "Checking target"
-    exports:
-      has_target: "true"
     decision:
       conditions:
-        - if: "{{has_target}}"
+        - if: "{{enable_extra}} && {{target}} != ''"
           function: "log_info('[COND] Target is present')"
 
   # Step 2: Multiple conditions - all matching ones execute