refactor(cli): consolidate shared utilities and remove code duplication
Extract common helper functions from multiple command files into shared
utility modules:
- Create cli/src/utils/json.zig with json.getString(), getInt(), getFloat(), getBool()
- Create cli/src/utils/manifest.zig with readFileAlloc(), resolvePathWithBase(),
resolvePathById(), readJobNameFromManifest()
- Add ResponsePacket.deinit() method to net/protocol.zig for consistent cleanup
- Update info.zig, annotate.zig, narrative.zig, requeue.zig to use shared utilities
- Update utils.zig exports for new modules
Eliminates duplicate implementations of:
- jsonGetString() and jsonGetInt() in 4 files
- readFileAlloc() in 4 files
- resolveManifestPath*() functions in 4 files
- ResponsePacket cleanup defer blocks (replaced with .deinit())
Builds cleanly with zig build --release=fast
1597c20b73