fix(windows): keep the service port private and make the CLI recover from stale services

Running `simdeck` on Windows could sit silent for three minutes and then
come up on a different port. Four Windows-specific gaps combined to cause it:

- Tokio creates Windows sockets with `socket()`, so the HTTP listener handle
  was inheritable and every adb server or emulator the service spawned kept
  the port open after the service exited. The listener now clears its
  inherit flag right after binding.
- The CLI probed an existing service's `/api/health` with the 180 second
  HTTP client read timeout, so an orphaned port that accepts but never
  answers stalled every command. The probe now uses a 5 second bounded
  connect/read timeout.
- Process control shelled out to `kill` and `ps`, which do not exist on
  Windows, so `service stop` and `simdeck kill` reported success without
  ending anything and stale services accumulated. Windows now checks
  processes through OpenProcess/GetExitCodeProcess and terminates the
  service tree with `taskkill /T`.
- The state directory came from `HOME`, which PowerShell and cmd do not
  set, so each shell used a different service.json. Home resolution is now
  shared in `platform::user_home_dir` and honours USERPROFILE.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R5M5zpn6gaZYNyjANLwfoP

Author: NathanWalker

docs/guide/troubleshooting.md

@@ -44,6 +44,30 @@ If it is an old service:
 simdeck service stop
 ```
 
+### `simdeck` prints nothing for minutes on Windows
+
+Earlier Windows builds let child processes inherit the service's listening
+socket. If the service exited while the adb server or an emulator it
+started was still running, port 4310 stayed open with nothing answering, and
+the next `simdeck` run waited on it before starting a fresh service on another
+port. Stop the orphaned holder and run `simdeck` again:
+
+```powershell
+adb kill-server
+```
+
+Newer builds keep the listener private to the service and give up on a silent
+port after a few seconds.
+
+### Windows reports a missing `libstdc++-6.dll`
+
+The Windows binary is built with the MinGW toolchain and must not depend on its
+runtime DLLs. A build that does starts only inside Git Bash and fails from
+PowerShell or cmd with exit code `0xC0000135`. Released builds link the runtime
+statically; a source build needs `SIMDECK_BUILD_TARGET=x86_64-pc-windows-gnu`,
+which `npm run build:cli` handles by adding `+crt-static` and refusing to
+package a binary that still imports those DLLs.
+
 ### Native binary is missing
 
 Reinstall from npm:

packages/server/src/android.rs

@@ -1981,20 +1981,7 @@ fn java_home() -> Option<OsString> {
 }
 
 fn home_dir() -> PathBuf {
-    env::var_os("HOME")
-        .or_else(|| env::var_os("USERPROFILE"))
-        .or_else(
-            || match (env::var_os("HOMEDRIVE"), env::var_os("HOMEPATH")) {
-                (Some(drive), Some(path)) => {
-                    let mut combined = PathBuf::from(drive);
-                    combined.push(path);
-                    Some(combined.into_os_string())
-                }
-                _ => None,
-            },
-        )
-        .map(PathBuf::from)
-        .unwrap_or_else(|| Path::new("/").to_path_buf())
+    crate::platform::user_home_dir().unwrap_or_else(|| Path::new("/").to_path_buf())
 }
 
 fn extract_xml(output: &str) -> &str {

packages/server/src/config.rs

@@ -83,9 +83,7 @@ pub fn user_config_path() -> PathBuf {
 }
 
 pub fn simdeck_user_state_dir() -> PathBuf {
-    std::env::var_os("HOME")
-        .filter(|value| !value.is_empty())
-        .map(PathBuf::from)
+    crate::platform::user_home_dir()
         .map(|home| home.join(".simdeck"))
         .unwrap_or_else(|| std::env::temp_dir().join("simdeck"))
 }

packages/server/src/inspector.rs

@@ -540,8 +540,7 @@ impl Drop for RegistryFileLock {
 fn inspector_registry_path() -> PathBuf {
     env::var_os("SIMDECK_INSPECTOR_REGISTRY_PATH")
         .map(PathBuf::from)
-        .or_else(|| env::var_os("HOME").map(|home| PathBuf::from(home).join(".simdeck")))
-        .unwrap_or_else(|| env::temp_dir().join("simdeck"))
+        .unwrap_or_else(crate::config::simdeck_user_state_dir)
         .join("inspectors.json")
 }