fix(ios): preserve hermes output on non-zero exit + extend remote PATH

Two related fixes that together restore Skills hub Browse / Search on
iOS over Citadel SSH.

CitadelServerTransport.asyncRunProcess was using `executeCommand`,
which throws `CommandFailed` and discards the captured ByteBuffer when
the remote process exits non-zero. `hermes skills browse` happens to
print its full table and then exit non-zero on some hosts, so iOS got
nothing while Mac (Foundation Process) got the full output with
exitCode=1. Drive `executeCommandStream` directly so stdout + stderr
are drained regardless of outcome, then catch `SSHClient.CommandFailed`
to recover the actual exit code. Network/channel-level failures still
report -1 so callers can distinguish them from a clean non-zero remote
exit.

Citadel's raw exec channel also doesn't source the user's shell rc
files, so non-interactive sessions land with a stripped PATH (typically
just /usr/bin:/bin). pipx installs `hermes` at `~/.local/bin/hermes`,
and many of hermes's sub-tools (git, curl, python) live in homebrew
prefixes that the remote sshd would otherwise add via login-shell init.
Mac's OpenSSH sshd handles this transparently; Citadel does not. Inline
PATH=$HOME/.local/bin:/opt/homebrew/bin:/usr/local/bin:$PATH on every
runProcess invocation so bare `hermes` resolves AND any subprocess it
spawns can still find its tools.

SkillsViewModel.finishBrowse now surfaces the actual stderr/stdout
snippet when the CLI exits non-zero, instead of a canned "Browse failed"
banner. ANSI-stripped + box-drawing-stripped so the message stays
readable in the one-line banner. Made diagnosing the underlying PATH
issue much easier and is a net UX improvement going forward.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scarf/Scarf iOS/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,7 +1,112 @@
 {
   "images" : [
     {
-      "filename" : "AppIcon-1024.png",
+      "filename" : "AW Mac OS Applications-macOS-Default-20x20@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-20x20@3x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-29x29@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-29x29@3x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-38x38@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "38x38"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-38x38@3x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "3x",
+      "size" : "38x38"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-40x40@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-40x40@3x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-60x60@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-60x60@3x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-64x64@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "64x64"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-64x64@3x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "3x",
+      "size" : "64x64"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-68x68@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "68x68"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-76x76@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-83.5x83.5@2x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "filename" : "AW Mac OS Applications-macOS-Default-1024x1024@1x.png",
       "idiom" : "universal",
       "platform" : "ios",
       "size" : "1024x1024"