fix: prevent infinite loop during storage initialization (v6.0.1)

CRITICAL FIX for production blocker in v6.0.0:

Root Cause:
- BaseStorage.init() set isInitialized = true at the END of initialization
- If any code during init called ensureInitialized(), it triggered init() recursively
- This caused infinite loop on fresh workspace initialization

Fix:
- Set isInitialized = true at START of BaseStorage.init()
- Wrap in try/catch to reset flag on error
- Prevents recursive init() calls while maintaining error recovery

Impact:
- Fixes all 8 storage adapters (FileSystem, Memory, S3, R2, GCS, Azure, OPFS, Historical)
- Init now completes in ~1 second on fresh installation (was hanging)
- Workshop team can now use v6.0.0 features without infinite loop
- No new test failures (1178 tests passing)

Files:
- src/storage/baseStorage.ts: Move isInitialized = true to top of init()
- CHANGELOG.md: Document v6.0.1 hotfix

Co-Authored-By: Claude <noreply@anthropic.com>

src/storage/baseStorage.ts

@@ -259,22 +259,31 @@ export abstract class BaseStorage extends BaseStorageAdapter {
    * IMPORTANT: If your adapter overrides init(), call await super.init() first!
    */
   public async init(): Promise<void> {
-    // Load type statistics from storage (if they exist)
-    await this.loadTypeStatistics()
+    // v6.0.1: CRITICAL FIX - Set flag FIRST to prevent infinite recursion
+    // If any code path during initialization calls ensureInitialized(), it would
+    // trigger init() again. Setting the flag immediately breaks the recursion cycle.
+    this.isInitialized = true
 
-    // v6.0.0: Create GraphAdjacencyIndex (lazy-loaded, no rebuild)
-    // LSM-trees are initialized on first use via ensureInitialized()
-    // Index is populated incrementally as verbs are added via addVerb()
     try {
-      prodLog.debug('[BaseStorage] Creating GraphAdjacencyIndex...')
-      this.graphIndex = new GraphAdjacencyIndex(this)
-      prodLog.debug(`[BaseStorage] GraphAdjacencyIndex instantiated (lazy-loaded), graphIndex=${!!this.graphIndex}`)
+      // Load type statistics from storage (if they exist)
+      await this.loadTypeStatistics()
+
+      // v6.0.0: Create GraphAdjacencyIndex (lazy-loaded, no rebuild)
+      // LSM-trees are initialized on first use via ensureInitialized()
+      // Index is populated incrementally as verbs are added via addVerb()
+      try {
+        prodLog.debug('[BaseStorage] Creating GraphAdjacencyIndex...')
+        this.graphIndex = new GraphAdjacencyIndex(this)
+        prodLog.debug(`[BaseStorage] GraphAdjacencyIndex instantiated (lazy-loaded), graphIndex=${!!this.graphIndex}`)
+      } catch (error) {
+        prodLog.error('[BaseStorage] Failed to create GraphAdjacencyIndex:', error)
+        throw error
+      }
     } catch (error) {
-      prodLog.error('[BaseStorage] Failed to create GraphAdjacencyIndex:', error)
+      // Reset flag on failure to allow retry
+      this.isInitialized = false
       throw error
     }
-
-    this.isInitialized = true
   }
 
   /**