Initial commit: AirCoding V1.0.0 Alpha architecture baseline

Complete architecture document set with multi-model review remediation:
- Frozen interface contracts, runtime semantics, DB schemas
- Event/tool/error/provider registries
- Scheduler and main agent state machines
- C4 module/code views, solution architecture, baseline V1
- Multi-model review reports and joint assessment
- Phase-gate remediation complete (P0/P1/P2/UX resolved)
- Implementation plan with T-000A through T-045
- Reference folders kept as placeholders only

reference/openai-codex/.github/scripts/compute-bazel-windows-path.ps1

@@ -0,0 +1,113 @@
+<#
+BuildBuddy cache keys include the action and test environment, so Bazel should
+not inherit the full hosted-runner PATH on Windows. That PATH includes volatile
+tool entries, such as Maven, that can change independently of this repo and
+cause avoidable cache misses.
+
+This script derives a smaller, cache-stable PATH that keeps the Windows
+toolchain entries Bazel-backed CI tasks need: MSVC and Windows SDK paths,
+MinGW runtime DLL paths for gnullvm-built tests, Git, PowerShell, Node, Python,
+DotSlash, and the standard Windows system directories.
+`setup-bazel-ci` runs this after exporting the MSVC environment, and the script
+publishes the result via `GITHUB_ENV` as `CODEX_BAZEL_WINDOWS_PATH` so later
+steps can pass that explicit PATH to Bazel.
+#>
+
+$stablePathEntries = New-Object System.Collections.Generic.List[string]
+$seenEntries = [System.Collections.Generic.HashSet[string]]::new([System.StringComparer]::OrdinalIgnoreCase)
+$windowsAppsPath = if ([string]::IsNullOrWhiteSpace($env:LOCALAPPDATA)) {
+  $null
+} else {
+  "$($env:LOCALAPPDATA)\Microsoft\WindowsApps"
+}
+$windowsDir = if ($env:WINDIR) {
+  $env:WINDIR
+} elseif ($env:SystemRoot) {
+  $env:SystemRoot
+} else {
+  $null
+}
+
+function Add-StablePathEntry {
+  param([string]$PathEntry)
+
+  if ([string]::IsNullOrWhiteSpace($PathEntry)) {
+    return
+  }
+
+  if ($seenEntries.Add($PathEntry)) {
+    [void]$stablePathEntries.Add($PathEntry)
+  }
+}
+
+foreach ($pathEntry in ($env:PATH -split ';')) {
+  if ([string]::IsNullOrWhiteSpace($pathEntry)) {
+    continue
+  }
+
+  if (
+    $pathEntry -like '*Microsoft Visual Studio*' -or
+    $pathEntry -like '*Windows Kits*' -or
+    $pathEntry -like '*Microsoft SDKs*' -or
+    $pathEntry -eq 'C:\mingw64\bin' -or
+    $pathEntry -like 'C:\msys64\*\bin' -or
+    $pathEntry -like 'C:\Program Files\Git\*' -or
+    $pathEntry -like 'C:\Program Files\PowerShell\*' -or
+    $pathEntry -like 'C:\hostedtoolcache\windows\node\*' -or
+    $pathEntry -like 'C:\hostedtoolcache\windows\Python\*' -or
+    $pathEntry -eq 'D:\a\_temp\install-dotslash\bin' -or
+    ($windowsDir -and ($pathEntry -eq $windowsDir -or $pathEntry -like "${windowsDir}\*"))
+  ) {
+    Add-StablePathEntry $pathEntry
+  }
+}
+
+$gitCommand = Get-Command git -ErrorAction SilentlyContinue
+if ($gitCommand) {
+  Add-StablePathEntry (Split-Path $gitCommand.Source -Parent)
+}
+
+$nodeCommand = Get-Command node -ErrorAction SilentlyContinue
+if ($nodeCommand) {
+  Add-StablePathEntry (Split-Path $nodeCommand.Source -Parent)
+}
+
+$python3Command = Get-Command python3 -ErrorAction SilentlyContinue
+if ($python3Command) {
+  Add-StablePathEntry (Split-Path $python3Command.Source -Parent)
+}
+
+$pythonCommand = Get-Command python -ErrorAction SilentlyContinue
+if ($pythonCommand) {
+  Add-StablePathEntry (Split-Path $pythonCommand.Source -Parent)
+}
+
+$pwshCommand = Get-Command pwsh -ErrorAction SilentlyContinue
+if ($pwshCommand) {
+  Add-StablePathEntry (Split-Path $pwshCommand.Source -Parent)
+}
+
+foreach ($mingwPath in @('C:\mingw64\bin', 'C:\msys64\mingw64\bin', 'C:\msys64\ucrt64\bin')) {
+  if (Test-Path $mingwPath) {
+    Add-StablePathEntry $mingwPath
+  }
+}
+
+if ($windowsAppsPath) {
+  Add-StablePathEntry $windowsAppsPath
+}
+
+if ($stablePathEntries.Count -eq 0) {
+  throw 'Failed to derive cache-stable Windows PATH.'
+}
+
+if ([string]::IsNullOrWhiteSpace($env:GITHUB_ENV)) {
+  throw 'GITHUB_ENV must be set.'
+}
+
+$stablePath = $stablePathEntries -join ';'
+Write-Host 'Derived CODEX_BAZEL_WINDOWS_PATH entries:'
+foreach ($pathEntry in $stablePathEntries) {
+  Write-Host "  $pathEntry"
+}
+"CODEX_BAZEL_WINDOWS_PATH=$stablePath" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append