Logging and diagnostics improvements (#941)

Core logging and system diagnostics improvements, extracted from the compute branch.

### Logging
- **Elapsed timestamps**: Console log now shows elapsed time since launch `[HH:MM:SS.mmm]` instead of full date/time; file logging is unchanged
- **Short level names**: 3-letter short level names (`trc`/`dbg`/`inf`/`wrn`/`err`/`crt`) used by both console and file formatters via `ShortToStringView()`
- **Consistent field order**: Standardized to `[timestamp] [level] [logger]` across both console and file formatters
- **Slim LogMessage/LogPoint**: Remove redundant fields from `LogMessage` (derive level/source from `LogPoint`), flatten `LogPoint` to inline filename/line fields, shrink `LogLevel` to `int8_t` with `static_assert(sizeof(LogPoint) <= 32)`
- **Remove default member initializers** and static default `LogPoint` from `LogMessage` — all fields initialized by constructor
- **LoggerRef string constructor**: Convenience constructor accepting a string directly
- **Fix SendMessage macro collision**: Replace `thread.h` include in `logmsg.h` with a forward declaration of `GetCurrentThreadId()` to avoid pulling in `windows.h` transitively

### System Diagnostics
- **Cache static system metrics**: Add `RefreshDynamicSystemMetrics()` that only queries values that change at runtime (available memory, uptime, swap). `SystemMetricsTracker` snapshots full `GetSystemMetrics()` once at construction and reuses cached topology/total memory on each `Query()`, avoiding repeated `GetLogicalProcessorInformationEx` traversal on Windows, `/proc/cpuinfo` parsing on Linux, and `sysctl` topology calls on macOS

1 files changed, 21 insertions, 17 deletions

diff --git a/.github/workflows/test_manual.yml b/.github/workflows/test_manual.yml
index 095828656..e25a95143 100644
--- a/.github/workflows/test_manual.yml
+++ b/.github/workflows/test_manual.yml
@@ -64,13 +64,12 @@ jobs:
         xmake-version: ${{ env.XMAKE_VERSION }}
 
     - name: Config
-      shell: bash
       run: |
-        SANITIZER_FLAG=""
-        if [ "${{ inputs.sanitizer }}" != "none" ]; then
-          SANITIZER_FLAG="--${{ inputs.sanitizer }}=y"
-        fi
-        xmake config -vD -y -m debug --arch=x64 --zensentry=no $SANITIZER_FLAG
+        $SanitizerFlag = ""
+        if ("${{ inputs.sanitizer }}" -ne "none") {
+          $SanitizerFlag = "--${{ inputs.sanitizer }}=y"
+        }
+        xmake config -vD -y -m debug --arch=x64 --zensentry=no $SanitizerFlag
 
     - name: Clean reports
       run: if (Test-Path build/reports) { Remove-Item -Recurse -Force build/reports }
@@ -89,18 +88,21 @@ jobs:
         }
 
     - name: Build & Test
-      shell: bash
       run: |
-        EXTRA_ARGS=""
-        MALLOC_ARG=""
-        if [ "${{ inputs.malloc }}" != "default" ]; then
-          MALLOC_ARG="--malloc=${{ inputs.malloc }}"
-        fi
-        USER_ARGS="${{ inputs.extra_args }}"
-        if [ -n "$MALLOC_ARG" ] || [ -n "$USER_ARGS" ]; then
-          EXTRA_ARGS="-- $MALLOC_ARG $USER_ARGS"
-        fi
-        xmake test -v -y --run=${{ inputs.test_suite }} --junit $EXTRA_ARGS
+        $ExtraArgs = @()
+        if ("${{ inputs.malloc }}" -ne "default") {
+          $ExtraArgs += "--malloc=${{ inputs.malloc }}"
+        }
+        $UserArgs = "${{ inputs.extra_args }}"
+        if ($UserArgs) {
+          $ExtraArgs += $UserArgs -split ' '
+        }
+        $Cmd = "xmake test -v -y --run=${{ inputs.test_suite }} --junit"
+        if ($ExtraArgs.Count -gt 0) {
+          $Cmd += " -- " + ($ExtraArgs -join ' ')
+        }
+        Write-Host "Running: $Cmd"
+        Invoke-Expression $Cmd
 
     - name: Kill test processes
       if: always()
@@ -177,6 +179,7 @@ jobs:
 
     - name: Build & Test
       run: |
+        set -x
         EXTRA_ARGS=""
         MALLOC_ARG=""
         if [ "${{ inputs.malloc }}" != "default" ]; then
@@ -257,6 +260,7 @@ jobs:
 
     - name: Build & Test
       run: |
+        set -x
         EXTRA_ARGS=""
         MALLOC_ARG=""
         if [ "${{ inputs.malloc }}" != "default" ]; then