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, 6 insertions, 4 deletions

diff --git a/src/zenserver/xmake.lua b/src/zenserver/xmake.lua
index fe279ebb2..b619c5548 100644
--- a/src/zenserver/xmake.lua
+++ b/src/zenserver/xmake.lua
@@ -19,7 +19,7 @@ target("zenserver")
     add_headerfiles("**.h")
     add_rules("utils.bin2c", {extensions = {".zip"}})
     add_files("**.cpp")
-    add_files("frontend/html.zip")
+    add_files("$(buildir)/frontend/html.zip")
     add_files("zenserver.cpp", {unity_ignored  = true })
 
     if is_plat("linux") and not (get_config("toolchain") or ""):find("clang") then
@@ -84,7 +84,8 @@ target("zenserver")
    
     on_load(function(target)
         local html_dir = path.join(os.projectdir(), "src/zenserver/frontend/html")
-        local zip_path = path.join(os.projectdir(), "src/zenserver/frontend/html.zip")
+        local zip_dir = path.join(os.projectdir(), get_config("buildir") or "build", "frontend")
+        local zip_path = path.join(zip_dir, "html.zip")
 
         -- Check if zip needs regeneration
         local need_update = not os.isfile(zip_path)
@@ -100,18 +101,19 @@ target("zenserver")
 
         if need_update then
             print("Regenerating frontend zip...")
+            os.mkdir(zip_dir)
             os.tryrm(zip_path)
 
             import("detect.tools.find_7z")
             local cmd_7z = find_7z()
             if cmd_7z then
-                os.execv(cmd_7z, {"a", "-mx0", zip_path, path.join(html_dir, ".")})
+                os.execv(cmd_7z, {"a", "-mx0", "-bso0", zip_path, path.join(html_dir, ".")})
             else
                 import("detect.tools.find_zip")
                 local zip_cmd = find_zip()
                 if zip_cmd then
                     local oldir = os.cd(html_dir)
-                    os.execv(zip_cmd, {"-r", "-0", zip_path, "."})
+                    os.execv(zip_cmd, {"-r", "-0", "-q", zip_path, "."})
                     os.cd(oldir)
                 else
                     raise("Unable to find a suitable zip tool (need 7z or zip)")