fix: repair stdout callback + refresh the access recipe

community.general 12 removed the `yaml` stdout callback, so every ansible
invocation died with a [DEPRECATED] error. Use the core default callback
with `callback_result_format = yaml` — identical output, no collection dep.

CLAUDE.md's access recipe still described the retired `-J kuku … 10.8.0.4`
hop; `mamba` is now an ssh alias over the wg overlay. Also record two things
that cost time on the 2026-09-01 bench session: the vaulted admin password
cannot authenticate over SSH at all (RouterOS refuses password auth for a
user holding an SSH key while always-allow-password-login=no), so each
operator seat needs its own key imported; and the checked-in .venv carries
shebangs from the original /home/sjat path.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EyYJWABgSEHzbjsZGrkxVE

CLAUDE.md

@@ -36,16 +36,27 @@ The switch is reachable only via the makerspace laptop `mamba`. Ansible's `netwo
 uses paramiko, which **ignores ProxyJump**, so port-forward instead of double-hopping:
 
 ```bash
-ssh -J kuku -p 7576 sjat@10.8.0.4 -L 2222:192.168.88.1:22 -N    # tunnel to the switch
+ssh -N -L 2222:192.168.88.1:22 mamba                            # tunnel to the switch
-ansible-playbook play_switch.yml -e ansible_host=127.0.0.1 -e ansible_port=2222 -e ansible_user=sjat
+ansible-playbook play_switch.yml -e ansible_host=127.0.0.1 -e ansible_port=2222
 ssh-keygen -R '[127.0.0.1]:2222'                                # if the tunnel host key changed
 ```
 
+- `mamba` is an ssh alias from boma's `ssh_client` drop-in (`10.99.0.10:7576` over the wg
+  overlay). It superseded the old `-J kuku … sjat@10.8.0.4` hop; that path is dead.
+- `ansible_user: sjat` already comes from `host_vars`, so don't pass it on the CLI.
+- **Every operator seat needs its own key on the device** — key auth is the only way in
+  (see Rules). `ubongo`'s `claude@ubongo` key was added 2026-09-01; a new seat repeats:
+  `scp -O key.pub sjat@192.168.88.1:` then
+  `/user/ssh-keys/import public-key-file=key.pub user=sjat`, and delete the uploaded file.
 - `mamba` is the mgmt station on **switch port 8** (MGMT VLAN); it must be on port 8 to
   reach `192.168.88.1`. From a data port it gets `10.2.30.x` and **cannot** reach mgmt.
 - NM profiles on `mamba` `enp0s31f6`: `crs310-bench` (static `.2`) and `Wired connection 1`
   (DHCP). Moving the cable flaps the link and NM re-selects a profile — pin the intended
   one sticky (`autoconnect yes` + higher priority) and the other off, or it reverts.
+  Either profile works now that the mgmt VLAN serves DHCP (`.253` from the pool).
+- The `.venv` was built under `/home/sjat/…`; on a checkout at another path its console
+  scripts fail with exit 126 (stale shebang). Fix the shebangs or rebuild the venv —
+  the system `ansible` is not a substitute (no paramiko, newer `community.general`).
 
 ## Rules
 
@@ -62,6 +73,11 @@ ssh-keygen -R '[127.0.0.1]:2222'                                # if the tunnel
 - **All real values go in `host_vars`;** the role holds only mechanism + placeholders.
 - **Secrets** go to the `makerfloss` vault, never plaintext. Encrypt with
   `ansible-vault encrypt --encrypt-vault-id makerfloss <file>`.
+- **`vault_switch_admin_password` cannot log in over SSH** and is console/recovery-only.
+  RouterOS refuses password auth for any user that has an SSH key while
+  `/ip/ssh always-allow-password-login=no` (the default, and deliberately kept). So
+  `play_bootstrap.yml`'s password is a one-shot for user creation; after the key import
+  the only SSH path is key auth. Never "fix" a failed login by flipping that flag.
 - **New work:** branch first, implement, verify (lint + syntax + run-twice), then merge.
 
 ## Status / next

ansible.cfg

@@ -7,7 +7,10 @@ retry_files_enabled = False
 interpreter_python = auto_silent
 nocows = 1
 timeout = 30
-stdout_callback = yaml
+# `yaml` was community.general's stdout callback; removed in community.general 12.
+# ansible-core 2.13+ gives the same output via the default callback + result format.
+stdout_callback = default
+callback_result_format = yaml
 bin_ansible_callbacks = True
 vault_identity_list = makerfloss@~/.ansible/vault-keys/makerfloss.txt