cookbook agent debug loop: persistent log files, auto-adopt orphan tmux, Codex/Claude skill parity

Three converging fixes so the chat agent + external Codex/Claude skills can actually debug a crashed serve instead of staring at a post-crash neofetch banner:

* Serves now `tee` to /tmp/odysseus-tmux/SESSION.log on the host running them. Runner saves fds 3/4 before the tee and restores them right before `exec ${SHELL}`, so the post-crash interactive zsh banner does NOT pollute the log file.
* `tail_serve_output` (chat agent) and `/api/codex/cookbook/output/{sid}` (Codex+Claude skills) both prefer the persistent log file over the tmux pane. Pane is fallback for sessions predating the tee runner. Default tail bumped 150 -> 400.
* `list_served_models` "recent log" snippet seeks to the Traceback line instead of showing the last 6 lines (which was always the bash prompt).

Cookbook auto-adoption sweep on `/api/cookbook/tasks/status`: every 20s (rate-limited) the cookbook SSHes each configured server, finds `serve-*` / `cookbook-*` tmux sessions running an actual model process (vllm/python/llama-server/etc., filtered via `pane_current_command`), and writes them into state.tasks. So when the agent falls back to raw ssh+tmux, the session appears in the Cookbook UI on the next poll.

`serve_model` error path now reads `data["detail"]` in addition to `data["error"]` so the FastAPI HTTPException message ("Invalid characters in cmd") actually reaches the agent instead of being swallowed as a generic "Serve failed". Tool description updated to warn against `cd …`/`source …`/`&&` prefixes.

Intent-without-action supervisor in agent_loop: when the model writes "Let me tail the output" / "I'll check the logs" / "Let me investigate" and ends the turn without emitting a tool call, the loop injects a sharp system nudge ("You said you would X — DO IT NOW") and continues. Capped at 2 nudges per chat so a model that genuinely cannot use the tool does not pin the loop.

Codex/Claude skill parity: adds `/cookbook/cached`, `/cookbook/presets`, `/cookbook/preset/{name}`, `/cookbook/adopt` so external agents have the same surface as the chat agent. SKILL.md docs + odysseus_api.py wrapper updated for both bundles.

`adopt_served_model` promoted to the always-on tool set so the agent has a documented fallback when serve_model rejects a cmd.

Also various cookbook UI tweaks accumulated alongside the above (cookbook.js, cookbookRunning.js, cookbookServe.js, cookbook-diagnosis.js, settings.js, style.css).

src/tool_schemas.py

@@ -721,6 +721,21 @@ FUNCTION_TOOL_SCHEMAS = [
             }
         }
     },
+    {
+        "type": "function",
+        "function": {
+            "name": "tail_serve_output",
+            "description": "Read the last N lines of a cookbook serve/download task's tmux pane. Use ONLY in this exact sequence: (1) the user asked to serve a model, (2) you launched it via serve_model, (3) list_served_models reports the NEW task as crashed/error, (4) call tail_serve_output on the new sessionId to find the root cause, (5) call serve_model again with adjusted flags. DO NOT call this on old stopped/completed download tasks — they are historical and won't tell you anything about the current attempt. DO NOT investigate past failures before launching; the environment may have changed since.",
+            "parameters": {
+                "type": "object",
+                "properties": {
+                    "session_id": {"type": "string", "description": "Tmux session id from list_served_models (e.g. 'serve-abc12345', 'cookbook-a1b2c3d4')."},
+                    "tail": {"type": "integer", "description": "How many lines of pane scrollback to fetch (default 300, max 4000). Bump this if the error in the visible tail references an earlier line ('see root cause above')."},
+                },
+                "required": ["session_id"]
+            }
+        }
+    },
     {
         "type": "function",
         "function": {