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).

routes/cookbook_helpers.py

@@ -546,6 +546,13 @@ def _append_serve_preflight_exit_lines(runner_lines: list[str], *, keep_shell_op
     runner_lines.append('if [ -n "$ODYSSEUS_PREFLIGHT_EXIT" ]; then')
     runner_lines.append('  echo ""; echo "=== Process exited with code $ODYSSEUS_PREFLIGHT_EXIT ==="')
     if keep_shell_open:
+        # Decouple the post-crash interactive shell from the persistent log
+        # file. fds 3/4 were saved BEFORE the tee redirect at the top of
+        # the runner; restoring them here means the neofetch banner the
+        # user's .zshrc prints lands on the tmux pane only, not in the
+        # log file the agent's tail_serve_output reads.
+        runner_lines.append('  exec 1>&3 2>&4 3>&- 4>&- 2>/dev/null || true')
+        runner_lines.append('  sleep 0.2  # let tee child flush + exit')
         runner_lines.append('  exec "${SHELL:-/bin/bash}"')
     else:
         runner_lines.append('  exit "$ODYSSEUS_PREFLIGHT_EXIT"')
@@ -563,7 +570,11 @@ def _append_serve_exit_code_lines(
     if is_pip_install:
         runner_lines.append('if [ $ODYSSEUS_CMD_EXIT -eq 0 ]; then echo ""; echo "DOWNLOAD_OK"; fi')
     if keep_shell_open:
-        runner_lines.append('echo ""; echo "=== Process exited with code $ODYSSEUS_CMD_EXIT ==="; exec "${SHELL:-/bin/bash}"')
+        runner_lines.append('echo ""; echo "=== Process exited with code $ODYSSEUS_CMD_EXIT ==="')
+        # See preflight branch above for the rationale on restoring fds 3/4.
+        runner_lines.append('exec 1>&3 2>&4 3>&- 4>&- 2>/dev/null || true')
+        runner_lines.append('sleep 0.2  # let tee child flush + exit')
+        runner_lines.append('exec "${SHELL:-/bin/bash}"')
     else:
         runner_lines.append('echo ""; echo "=== Process exited with code $ODYSSEUS_CMD_EXIT ==="')
         runner_lines.append('exit "$ODYSSEUS_CMD_EXIT"')