Move StartTime initialization to application startup hook

- Remove StartTime initialization from globals.New()
- Add setupGlobals function in app.go to set StartTime during fx OnStart
- Simplify globals package to be just a key/value store
- Remove fx dependencies from globals test

TODO.md

@@ -1,19 +1,10 @@
 # Implementation TODO
 
-## Local Index Database
-1. Implement SQLite schema creation
-1. Create Index type with all database operations
-1. Add transaction support and proper locking
-1. Implement file tracking (save, lookup, delete)
-1. Implement chunk tracking and deduplication
-1. Implement blob tracking and chunk-to-blob mapping
-1. Write tests for all index operations
-
 ## Chunking and Hashing
 1. Implement Rabin fingerprint chunker
-1. Create streaming chunk processor
-1. Implement SHA256 hashing for chunks
-1. Add configurable chunk size parameters
+1. Create streaming chunk processor  
+1. ~~Implement SHA256 hashing for chunks~~ (done in scanner)
+1. ~~Add configurable chunk size parameters~~ (done in scanner)
 1. Write tests for chunking consistency
 
 ## Compression and Encryption
@@ -40,9 +31,9 @@
 1. Write tests using MinIO container
 
 ## Backup Command - Basic
-1. Implement directory walking with exclusion patterns
+1. ~~Implement directory walking with exclusion patterns~~ (done with afero)
 1. Add file change detection using index
-1. Integrate chunking pipeline for changed files
+1. ~~Integrate chunking pipeline for changed files~~ (done in scanner)
 1. Implement blob upload coordination
 1. Add progress reporting to stderr
 1. Write integration tests for backup