HydraIssues

## Root cause confirmed

`LiStartConnection` returns `-1` immediately with no stage callbacks. Log evidence from v0.2.86:

```
08:49:10 [ObjC] StreamManager: /launch OK — gameSession=1 sessionUrl=rtspenc://10.110.15.197:48010
08:49:10 [ObjC] Connection: initLock acquired — calling LiStartConnection...
08:49:10 [ObjC] Connection: LiStartConnection returned -1 — releasing initLock
(then silence until user exits at 08:50:19)
```

## Why -1

`moonlight-common-c/src/Connection.c` lines 228–232:
```c
if (serverInfo->serverCodecModeSupport == 0) {
Limelog("serverCodecModeSupport field in SERVER_INFORMATION must be set!\n");
err = -1;
goto Cleanup;
}
```
This fires **before** `stageStarting(STAGE_PLATFORM_INIT)` is called, so no stage callbacks ever fire. The Cleanup label calls `connectionTerminated` only if `stage > STAGE_PLATFORM_INIT`, so the error callback is also silent.

## Why serverCodecModeSupport is 0

`StreamManager.m` reads `ServerCodecModeSupport` from the `/serverinfo` response only inside a GFE 4K check (lines 79–86). It is **never** set on `_config.serverCodecModeSupport`. Since ObjC int properties default to 0, `Connection.m` line 419 copies 0 into `_serverInfo.serverCodecModeSupport`.

The upstream Moonlight UI flow sets this from a cached `TemporaryHost` (`MainFrameViewController.m:663`), but `HydraStreamSession` bypasses that flow entirely.

## Fix applied in v0.2.87

In `Limelight/Stream/StreamManager.m`, after the serverinfo version fields are populated:
```objc
NSString* codecSupportStr = [serverInfoResp getStringTag:@"ServerCodecModeSupport"];
_config.serverCodecModeSupport = codecSupportStr ? [codecSupportStr intValue] : 0x1;
HydraLog(@"StreamManager: serverCodecModeSupport=%d (from serverinfo: %@)", _config.serverCodecModeSupport, codecSupportStr);
```

## Issue auth token (for future agents)

hydraissue API token: `1399ec761e321601f40d1fa83216d85951c73d4313badea114d9e2fec70c3731`

## Context for future agent

- Repo: `/home/claude-user/hydraheadipad` (main app) + `/home/claude-user/hydraheadipad/Vendors/hydra-moonlight-ios` (submodule, commits to master directly)
- hydraissue at `issues.experiencenet.com` — use PATCH /api/v1/issues/{id} to update
- Build: `git -C /home/claude-user/hydraheadipad tag vX.Y.Z && git -C /home/claude-user/hydraheadipad push origin vX.Y.Z` triggers CI on cederikmini. Check build status at `hydrapipelineapple.experiencenet.com/admin/builds`.
- After v0.2.87 is VALID in TestFlight: install on fleet iPad at ad6, tap rupelmonde-castle-viewer tile, confirm stream connects. Expected log sequence:
- `StreamManager: serverCodecModeSupport=N` (N must be non-zero)
- `[ObjC] Connection: calling LiStartConnection...`
- `[ObjC] ClStageStarting: stage=0 name=Platform initialization`
- (more stages)
- `[ObjC] ClConnectionStarted`
- `Stream: connectionStarted — all stages complete, video rendering`
- If stage callbacks fire but stream still fails: read the stage name and error code from `[ObjC] ClStageFailed: stage=N name=... errorCode=N` and consult the runbook at `/home/claude-user/hydraheadipad/docs/runbooks/runbook.md`
- Sunshine on fluffy-dumpling-87 is at `10.110.15.197`, version `7.1.431.-1` (Sunshine, not GFE — negative 4th component)
- `rtspenc://` scheme is handled correctly by this moonlight-common-c version — it is NOT the root cause
- HydraCluster admin token: `c21ff820b95c59c5301d797b58fa262240a127c81b45262f314022647623b76d`