fix(grok): four Grok Build 1.0.52 screens the phone read wrong, and its folder trust prompt as a card

web/src/fixtures/panes/README.md

@@ -519,6 +519,11 @@ Grok's composer is a rounded box at the tail: `╭─…─╮` / `│ ❯ … 
 | `grok--output-scrollbar.txt` | Grok Build 1.0.46 on macOS, 2026-10-08: tail of the live browser-send capture, from the code reply through the composer, byte-faithful except one status line, whose text was replaced with neutral text of the same width; its ANSI styling is unchanged. The code keeps its rgb(28,28,28) surface; the right-edge track is a separate `█` segment with foreground and background rgb(25,25,25), preceded by uncoloured rgb(20,20,20) canvas padding. A dark block following coloured message text must remain. Its empty viewport rows and full terminal-width padding must not inflate the wrapped phone mirror. Original screen rows remain intact for grammar and guard probes | `done` |
 | `grok--working.txt` | Mid-turn; empty box; working hint row under the box | `working` |
 | `grok--startup.txt` | Fresh-session welcome screen: banner box (logo, menu) above an idle composer whose under-box row is the bare `[stable]` channel chip, not the hint bar. composerReady must be TRUE. Byte-faithful `format:ansi` 2026-08-22 | `idle` |
+| `grok--welcome-card.txt` | Grok Build 1.0.52, signed in with an API key: the changelog welcome card sits right on top of the composer with no `Tip:` row between, and the under-box row reads `Logged in with API key  │  [stable]`. composerReady must be TRUE. Visible-screen `format:ansi` read 2026-10-15 in a throwaway Herdr session; the cwd row became `/tmp/collie-grok-sandbox` and the model label `mini` | `idle` |
+| `grok--slash-popup-exact.txt` | Grok Build 1.0.52, `/statusline` typed: the slash-command popup between two rules right on top of the composer, `❯ /statusline` highlighted. The box stays live and the draft reads `/statusline`. Visible-screen read 2026-10-15; a local hook notice above was blanked and the cwd row became `/tmp/collie-grok-sandbox` | `idle` |
+| `grok--model-arg-hint.txt` | Grok Build 1.0.52 after the harness bar's Model button: the model list between two rules over the composer, and the box holding `❯ /model <model> [window] [effort]`, the hint in grey `rgb(108,108,108)`. The draft reads `/model`; the list is not a slash popup, so composerReady is FALSE. Visible-screen read 2026-10-15 by the harness canary's bar scenario; a local hook notice above was blanked, the cwd row became `/tmp/collie-grok-sandbox` at the same width, and the model label `mini` | `idle` |
+| `grok--slash-popup-partial.txt` | Hand-built from the capture above: the box holds `/stat` while `❯ /statusline` stays highlighted, the shape a partial command takes (live, `/stat` highlighted another command). Enter would run the highlighted row, so the draft must not read `/stat` | `idle` |
+| `grok--trust-prompt.txt` | Grok Build 1.0.52 started in an untrusted folder that holds a project skill (`.agents/skills`): under the logo, `Do you trust the contents of this directory?`, the directory, a two-row warning, then `Yes, proceed  y` and `No, quit  n`, the version chip alone below. Lifts as a trust card, `y` and `n` each sent alone: live 2026-10-15, `n` quit to the shell and `y` went on to the composer and wrote the folder into the throwaway `trusted_folders.toml`. A folder with nothing for Grok to load showed no prompt. Recent-buffer read in a throwaway Herdr session with a moved GROK_HOME; the truncated scratch path became `/tmp/collie-grok-sandbox` at the same width | `blocked` |
 | `grok--done.txt` | Square user-message bubble ABOVE an idle composer — the bubble must survive the strip | `idle` |
 | `grok--user-bubble.txt` | Torn frame: square bubble, no composer. `locateComposer` must return null | — |
 | `grok--permission-rm.txt` | Bash `rm` permission card at the tail; `●` on option 1 (always-approve). Composer replaced. Byte-faithful `format:ansi` 2026-08-21 | `blocked` |

web/src/fixtures/panes/grok--model-arg-hint.txt

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+  master /tmp/collie-grok-sandbox                                            ⠋ MCP (2/2)   │ 1.3K / 200K │ [Dashboard]  
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+  ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────3─  
+    ❯ Grok 4.6       SpaceXAI's latest frontier model                                                                   
+      Grok 4.5                                                                                                          
+      mini (current)                                                                                                    
+  ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────  
+  ╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮  
+  │ ❯ /model <model> [window] [effort]                                                                               │  
+  ╰─────────────────────────────────────────────────────────────────────────────────────────────────────────── mini ─╯  
+                                                                                                                        
+  Enter:send  │  Shift+Enter/Opt+Enter:newline  │  Shift+Tab:mode  │  Ctrl+.:shortcuts                                  
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