Fix agent runtime lookup when launched from the desktop (#1551)

Thanks @cfaulkingham.

docs/agent-chat.md

@@ -55,6 +55,9 @@ SolidCraft looks for agents that speak the [Agent Client Protocol](https://agent
 on your `PATH` and in the usual install folders a desktop app's `PATH` often misses (npm's
 global folder, nvm, Volta, bun, `~/.local/bin`, `~/.grok/bin`, Homebrew, `%APPDATA%\npm`). For each one it
 shows its **version** (from `--version`, given three seconds) and whether it looks **signed in**.
+Version checks and agent sessions also use those folders on their `PATH`, so adapters can find
+runtimes such as Node when SolidCraft is opened from Finder or the Dock. Existing absolute
+`PATH` entries keep their order; no shell startup files are run.
 SolidCraft only checks whether the agent's own login file (`~/.claude/.credentials.json`,
 `~/.codex/auth.json`, `~/.gemini/oauth_creds.json`, …) or one of its key variables exists. It never
 reads the file and never starts the agent to find out. On macOS Claude Code keeps its login in