fix(academy): validate condition branch handles in edge_exists rules

- Add sourceHandle field to edge_exists ValidationRule type
- Check sourceHandle in validation.ts when specified
- Require both condition-if and condition-else branches to be connected in the branching and final project exercises

Author: waleedlatif1

apps/sim/lib/academy/content/courses/sim-foundations.ts

@@ -470,7 +470,15 @@ export const simFoundations: Course = {
                 type: 'edge_exists',
                 sourceType: 'condition',
                 targetType: 'agent',
-                label: 'Connect the Condition to at least one Agent',
+                sourceHandle: 'condition-if',
+                label: 'Connect the Condition true branch (top handle) to an Agent',
+              },
+              {
+                type: 'edge_exists',
+                sourceType: 'condition',
+                targetType: 'agent',
+                sourceHandle: 'condition-else',
+                label: 'Connect the Condition false branch (bottom handle) to an Agent',
               },
             ],
             hints: [
@@ -683,7 +691,15 @@ export const simFoundations: Course = {
                 type: 'edge_exists',
                 sourceType: 'condition',
                 targetType: 'agent',
-                label: 'Connect the Condition to at least one branch Agent',
+                sourceHandle: 'condition-if',
+                label: 'Connect the Condition true branch to an Agent',
+              },
+              {
+                type: 'edge_exists',
+                sourceType: 'condition',
+                targetType: 'agent',
+                sourceHandle: 'condition-else',
+                label: 'Connect the Condition false branch to an Agent',
               },
             ],
             hints: [

apps/sim/lib/academy/types.ts

@@ -114,7 +114,7 @@ export type ValidationRule = { label?: string } & (
       valueNotEmpty?: boolean
       valuePattern?: string
     }
-  | { type: 'edge_exists'; sourceType: string; targetType: string }
+  | { type: 'edge_exists'; sourceType: string; targetType: string; sourceHandle?: string }
   | { type: 'block_count_min'; count: number }
   | { type: 'block_count_max'; count: number }
   | { type: 'custom'; validatorId: string; params?: Record<string, unknown> }

apps/sim/lib/academy/validation.ts

@@ -58,7 +58,9 @@ function checkRule(
       return edges.some((e) => {
         const source = blockMap.get(e.source)
         const target = blockMap.get(e.target)
-        return source?.type === rule.sourceType && target?.type === rule.targetType
+        if (source?.type !== rule.sourceType || target?.type !== rule.targetType) return false
+        if (rule.sourceHandle && e.sourceHandle !== rule.sourceHandle) return false
+        return true
       })
     }