chore: trim the idle-timeout comment; show the named-session pattern once

containers/Dockerfile

@@ -117,16 +117,7 @@ ENV AGENT_BROWSER_EXECUTABLE_PATH=/usr/bin/chromium
 ENV AGENT_BROWSER_USER_AGENT="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
 ENV AGENT_BROWSER_ARGS="--disable-blink-features=AutomationControlled,--no-first-run,--no-default-browser-check,--lang=en-US"
 ENV AGENT_BROWSER_SCREENSHOT_DIR=/workspace/.agent-browser-screenshots
-# Reclaim abandoned browsers. Each `--session` name is a separate daemon owning its
+# Nothing owns a browser's lifecycle, so reclaim idle ones (~340 MB each).
-# own Chromium process group — measured at ~340 MB and ~12 processes with one page
-# open — and nothing in the engine owns a browser's lifecycle: agents drive
-# `agent-browser` through exec_command, so an agent that finishes, is stopped, or
-# crashes leaves its browser resident for the life of the sandbox. Upstream
-# disables the idle timeout by default, which turns a wide fan-out into gigabytes
-# of stranded Chromium. The daemon relaunches transparently on the next command, so
-# the only cost of reclamation is losing browser state (see the skill's note on
-# persisting it). Three minutes is longer than the gap between two browser commands
-# in an active agent turn; override the env var to tune.
 ENV AGENT_BROWSER_IDLE_TIMEOUT_MS=180000
 RUN /home/pentester/.npm-global/bin/agent-browser doctor --offline --quick
 

strix/skills/tooling/agent_browser.md

@@ -59,10 +59,18 @@ The browser stays running across commands so these feel like a single
 session. Use `agent-browser close` (or `close --all`) when you're done.
 
 The default session is **shared with every other agent in the sandbox** — if
-another agent navigates it, your page and your refs are gone from under you. Use
+another agent navigates it, your page and your refs are gone from under you. So
-`--session <your-agent-name>` for your own browser work so nobody else can move
+claim your own by passing `--session <your-agent-name>` on **every** command:
-it. Each session is a separate Chromium (~340 MB) on a shared box, so keep one
+
-rather than several, and close it when you're finished with the target.
+```bash
+agent-browser --session recon-3 open https://example.com
+agent-browser --session recon-3 snapshot -i
+agent-browser --session recon-3 close        # when done with the target
+```
+
+The examples in the rest of this skill omit `--session` to keep them readable;
+keep passing yours. Each session is a separate Chromium (~340 MB) on a shared
+box, so hold one rather than several, and close it when you're finished.
 
 A browser left idle for 3 minutes is reclaimed automatically to free memory for
 the other agents; the next command relaunches it, but the page, tabs, refs and