feat: add /reasoning reasoning visibility

docs/start/faq.md

@@ -603,6 +603,7 @@ Quick reference (send these in chat):
 | `/activation mention\|always` | Group activation (owner-only) |
 | `/think <level>` | Set thinking level (off\|minimal\|low\|medium\|high) |
 | `/verbose on\|off` | Toggle verbose mode |
+| `/reasoning on\|off` | Toggle reasoning visibility |
 | `/elevated on\|off` | Toggle elevated bash mode (approved senders only) |
 | `/model <name>` | Switch AI model (see below) |
 | `/queue <mode>` | Queue mode (see below) |

docs/tools/slash-commands.md

@@ -40,6 +40,7 @@ Text + native (when enabled):
 - `/reset` or `/new`
 - `/think <level>` (aliases: `/thinking`, `/t`)
 - `/verbose on|off` (alias: `/v`)
+- `/reasoning on|off` (alias: `/reason`)
 - `/elevated on|off` (alias: `/elev`)
 - `/model <name>`
 - `/queue <mode>` (plus options like `debounce:2s cap:25 drop:summarize`)

docs/tools/thinking.md

@@ -34,6 +34,12 @@ read_when:
 - Inline directive affects only that message; session/global defaults apply otherwise.
 - When verbose is on, agents that emit structured tool results (Pi, other JSON agents) send each tool result back as its own metadata-only message, prefixed with `<emoji> <tool-name>: <arg>` when available (path/command); the tool output itself is not forwarded. These tool summaries are sent as soon as each tool finishes (separate bubbles), not as streaming deltas. If you toggle `/verbose on|off` while a run is in-flight, subsequent tool bubbles honor the new setting.
 
+## Reasoning visibility (/reasoning)
+- Levels: `on|off`.
+- Directive-only message toggles whether thinking blocks are shown as italic text in replies.
+- When enabled, any model-provided reasoning content is appended as a separate italic block.
+- Alias: `/reason`.
+
 ## Related
 - Elevated mode docs live in [`docs/elevated.md`](/tools/elevated).
 

docs/web/tui.md

@@ -51,6 +51,7 @@ Use SSH tunneling or Tailscale to reach the Gateway WS.
 - `/model <provider/model>` (or `/model list`, `/models`)
 - `/think <off|minimal|low|medium|high>`
 - `/verbose <on|off>`
+- `/reasoning <on|off>`
 - `/elevated <on|off>`
 - `/elev <on|off>`
 - `/activation <mention|always>`