docs: update project documentation for v0.13.9.0

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

BROWSER.md

@@ -10,7 +10,8 @@ This document covers the command reference and internals of gstack's headless br
 | Read | `text`, `html`, `links`, `forms`, `accessibility` | Extract content |
 | Snapshot | `snapshot [-i] [-c] [-d N] [-s sel] [-D] [-a] [-o] [-C]` | Get refs, diff, annotate |
 | Interact | `click`, `fill`, `select`, `hover`, `type`, `press`, `scroll`, `wait`, `viewport`, `upload` | Use the page |
-| Inspect | `js`, `eval`, `css`, `attrs`, `is`, `console`, `network`, `dialog`, `cookies`, `storage`, `perf` | Debug and verify |
+| Inspect | `js`, `eval`, `css`, `attrs`, `is`, `console`, `network`, `dialog`, `cookies`, `storage`, `perf`, `inspect [selector] [--all]` | Debug and verify |
+| Style | `style <sel> <prop> <val>`, `style --undo [N]`, `cleanup [--all]`, `prettyscreenshot` | Live CSS editing and page cleanup |
 | Visual | `screenshot [--viewport] [--clip x,y,w,h] [sel\|@ref] [path]`, `pdf`, `responsive` | See what Claude sees |
 | Compare | `diff <url1> <url2>` | Spot differences between environments |
 | Dialogs | `dialog-accept [text]`, `dialog-dismiss` | Control alert/confirm/prompt handling |

CHANGELOG.md

@@ -13,6 +13,13 @@ The sidebar is now a visual design tool. Pick any element on the page and see th
 - **Page cleanup.** `$B cleanup --all` removes ads, cookie banners, sticky headers, and social widgets for clean screenshots.
 - **Pretty screenshots.** `$B prettyscreenshot --cleanup --scroll-to ".pricing" ~/Desktop/hero.png` combines cleanup, scroll positioning, and screenshot in one command.
 - **Stop button.** A red stop button appears in the sidebar when an agent is working. Click it to cancel the current task.
+- **CSP fallback for inspector.** Sites with strict Content Security Policy (like SF Chronicle) now get a basic picker via the always-loaded content script. You see computed styles, box model, and same-origin CSS rules. Full CDP mode on sites that allow it.
+- **Cleanup button in sidebar.** One click removes ads, cookie banners, sticky headers, and social widgets. Spinner while it works, notification when done.
+- **Screenshot button in sidebar.** One click captures a screenshot. Shows the saved file path in the chat.
+
+### Fixed
+
+- **Inspector message allowlist.** The background.js allowlist was missing all inspector message types, silently rejecting them. The inspector was broken for all pages, not just CSP-restricted ones. (Found by Codex review.)
 
 ### Changed
 

CLAUDE.md

@@ -100,7 +100,7 @@ gstack/
 │   ├── src/         # CLI + commands (generate, variants, compare, serve, etc.)
 │   ├── test/        # Integration tests
 │   └── dist/        # Compiled binary
-├── extension/       # Chrome extension (side panel + activity feed)
+├── extension/       # Chrome extension (side panel + activity feed + CSS inspector)
 ├── lib/             # Shared libraries (worktree.ts)
 ├── docs/designs/    # Design documents
 ├── setup-deploy/    # /setup-deploy skill (one-time deploy config)

README.md

@@ -187,7 +187,7 @@ Each skill feeds into the next. `/office-hours` writes a design doc that `/plan-
 | `/freeze` | **Edit Lock** — restrict file edits to one directory. Prevents accidental changes outside scope while debugging. |
 | `/guard` | **Full Safety** — `/careful` + `/freeze` in one command. Maximum safety for prod work. |
 | `/unfreeze` | **Unlock** — remove the `/freeze` boundary. |
-| `/connect-chrome` | **Chrome Controller** — launch your real Chrome controlled by gstack with the Side Panel extension. Watch every action live. |
+| `/connect-chrome` | **Chrome Controller** — launch Chrome with the Side Panel extension. Watch every action live, inspect CSS on any element, clean up pages, and take screenshots. Each tab gets its own agent. |
 | `/setup-deploy` | **Deploy Configurator** — one-time setup for `/land-and-deploy`. Detects your platform, production URL, and deploy commands. |
 | `/gstack-upgrade` | **Self-Updater** — upgrade gstack to latest. Detects global vs vendored install, syncs both, shows what changed. |