Dashboard overhaul, compute integration (#814)

- **Frontend dashboard overhaul**: Unified compute/main dashboards into a single shared UI. Added new pages for cache, projects, metrics, sessions, info (build/runtime config, system stats). Added live-update via WebSockets with pause control, sortable detail tables, themed styling. Refactored compute/hub/orchestrator pages into modular JS.
- **HTTP server fixes and stats**: Fixed http.sys local-only fallback when default port is in use, implemented root endpoint redirect for http.sys, fixed Linux/Mac port reuse. Added /stats endpoint exposing HTTP server metrics (bytes transferred, request rates). Added WebSocket stats tracking.
- **OTEL/diagnostics hardening**: Improved OTLP HTTP exporter with better error handling and resilience. Extended diagnostics services configuration.
- **Session management**: Added new sessions service with HTTP endpoints for registering, updating, querying, and removing sessions. Includes session log file support. This is still WIP.
- **CLI subcommand support**: Added support for commands with subcommands in the zen CLI tool, with improved command dispatch.
- **Misc**: Exposed CPU usage/hostname to frontend, fixed JS compact binary float32/float64 decoding, limited projects displayed on front page to 25 sorted by last access, added vscode:// link support.

Also contains some fixes from TSAN analysis.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/zenserver/frontend/html/util/compactbinary.js b/src/zenserver/frontend/html/util/compactbinary.js
index 90e4249f6..415fa4be8 100644
--- a/src/zenserver/frontend/html/util/compactbinary.js
+++ b/src/zenserver/frontend/html/util/compactbinary.js
@@ -310,8 +310,8 @@ CbFieldView.prototype.as_value = function(int_type=BigInt)
 	case CbFieldType.IntegerPositive:	return VarInt.read_uint(this._data_view, int_type)[0];
 	case CbFieldType.IntegerNegative:	return VarInt.read_int(this._data_view, int_type)[0];
 
-	case CbFieldType.Float32:			return new DataView(this._data_view.subarray(0, 4)).getFloat32(0, false);
-	case CbFieldType.Float64:			return new DataView(this._data_view.subarray(0, 8)).getFloat64(0, false);
+	case CbFieldType.Float32:			{ const s = this._data_view; return new DataView(s.buffer, s.byteOffset, 4).getFloat32(0, false); }
+	case CbFieldType.Float64:			{ const s = this._data_view; return new DataView(s.buffer, s.byteOffset, 8).getFloat64(0, false); }
 	case CbFieldType.BoolFalse:			return false;
 	case CbFieldType.BoolTrue:			return true;