Compute batching (#849)

### Compute Batch Submission
- Consolidate duplicated action submission logic in `httpcomputeservice` into a single `HandleSubmitAction` supporting both single-action and batch (actions array) payloads
- Group actions by queue in `RemoteHttpRunner` and submit as batches with configurable chunk size, falling back to individual submission on failure
- Extract shared helpers: `MakeErrorResult`, `ValidateQueueForEnqueue`, `ActivateActionInQueue`, `RemoveActionFromActiveMaps`

### Retracted Action State
- Add `Retracted` state to `RunnerAction` for retry-free rescheduling — an explicit request to pull an action back and reschedule it on a different runner without incrementing `RetryCount`
- Implement idempotent `RetractAction()` on `RunnerAction` and `ComputeServiceSession`
- Add `POST jobs/{lsn}/retract` and `queues/{queueref}/jobs/{lsn}/retract` HTTP endpoints
- Add state machine documentation and per-state comments to `RunnerAction`

### Compute Race Fixes
- Fix race in `HandleActionUpdates` where actions enqueued between session abandon and scheduler tick were never abandoned, causing `GetActionResult` to return 202 indefinitely
- Fix queue `ActiveCount` race where `NotifyQueueActionComplete` was called after releasing `m_ResultsLock`, allowing callers to observe stale counters immediately after `GetActionResult` returned OK

### Logging Optimization and ANSI improvements
- Improve `AnsiColorStdoutSink` write efficiency — single write call, dirty-flag flush, `RwLock` instead of `std::mutex`
- Move ANSI color emission from sink into formatters via `Formatter::SetColorEnabled()`; remove `ColorRangeStart`/`End` from `LogMessage`
- Extract color helpers (`AnsiColorForLevel`, `StripAnsiSgrSequences`) into `helpers.h`
- Strip upstream ANSI SGR escapes in non-color output mode. This enables colour in log messages without polluting log files with ANSI control sequences
- Move `RotatingFileSink`, `JsonFormatter`, and `FullFormatter` from header-only to pimpl with `.cpp` files

### CLI / Exec Refactoring
- Extract `ExecSessionRunner` class from ~920-line `ExecUsingSession` into focused methods and a `ExecSessionConfig` struct
- Replace monolithic `ExecCommand` with subcommand-based architecture (`http`, `inproc`, `beacon`, `dump`, `buildlog`)
- Allow parent options to appear after subcommand name by parsing subcommand args permissively and forwarding unmatched tokens to the parent parser

### Testing Improvements
- Fix `--test-suite` filter being ignored due to accumulation with default wildcard filter
- Add test suite banners to test listener output
- Made `function.session.abandon_pending` test more robust

### Startup / Reliability Fixes
- Fix silent exit when a second zenserver instance detects a port conflict — use `ZEN_CONSOLE_*` for log calls that precede `InitializeLogging()`
- Fix two potential SIGSEGV paths during early startup: guard `sentry_options_new()` returning nullptr, and throw on `ZenServerState::Register()` returning nullptr instead of dereferencing
- Fail on unrecognized zenserver `--mode` instead of silently defaulting to store

### Other
- Show host details (hostname, platform, CPU count, memory) when discovering new compute workers
- Move frontend `html.zip` from source tree into build directory
- Add format specifications for Compact Binary and Compressed Buffer wire formats
- Add `WriteCompactBinaryObject` to zencore
- Extended `ConsoleTui` with additional functionality
- Add `--vscode` option to `xmake sln` for clangd / `compile_commands.json` support
- Disable compute/horde/nomad in release builds (not yet production-ready)
- Disable unintended `ASIO_HAS_IO_URING` enablement
- Fix crashpad patch missing leading whitespace
- Clean up code triggering gcc false positives

1 files changed, 13 insertions, 10 deletions

diff --git a/xmake.lua b/xmake.lua
index d40131e35..3ad06b6bf 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -572,33 +572,36 @@ task("precommit")
 
 task("sln")
     set_menu {
-        usage = "xmake sln [--open]",
+        usage = "xmake sln [--open] [--vscode]",
         description = "Generate IDE project files",
         options = {
             {'o', "open", "k", nil, "Open the generated project in the IDE after generation"},
+            {nil, "vscode", "k", nil, "Generate compile_commands.json for VS Code / clangd"},
         }
     }
-    if is_os("windows") then
-        on_run(function ()
-            import("core.base.option")
+    on_run(function ()
+        import("core.base.option")
+        if option.get("vscode") then
+            os.exec("xmake project --yes --kind=compile_commands --lsp=clangd")
+            printf("generated compile_commands.json\n")
+            return
+        end
+        if is_os("windows") then
             os.exec("xmake project --yes --kind=vsxmake2022 -m release,debug -a x64")
             if option.get("open") then
                 local sln = path.join(os.projectdir(), "vsxmake2022", path.filename(os.projectdir()) .. ".sln")
                 printf("opening %s\n", sln)
                 try { function() os.execv("explorer", {sln}) end, catch { function() end } }
             end
-        end)
-    elseif is_os("macosx") then
-        on_run(function ()
-            import("core.base.option")
+        elseif is_os("macosx") then
             os.exec("xmake project --yes --kind=xcode -m release,debug -a x64,arm64")
             if option.get("open") then
                 local xcproj = path.join(os.projectdir(), path.filename(os.projectdir()) .. ".xcodeproj")
                 printf("opening %s\n", xcproj)
                 os.exec("open \"%s\"", xcproj)
             end
-        end)
-    end
+        end
+    end)
 
 task("test")
     set_menu {