README Tools section outdated: 8 tools undocumented, count wrong, roadmap lists already-shipped features

[vincentvella]

Problem

README.md has three related stale spots:

1. Wrong tool count — The "Tools (37)" heading is incorrect; src/toolSpecs.ts currently defines 45 tools (45 defineTool() calls).

2. 8 tools absent from the Tools section — The following tools exist in toolSpecs.ts and are fully implemented in src/toolLayer.ts but are not listed anywhere in the README's Tools section:

• browser_back, browser_forward, browser_reload
• pane_set_label
• ext_list, ext_install, ext_remove, ext_set_enabled

3. "Where to take it next" lists shipped work as TODO — The bullet reads:

"Full MCP parity — the last cockpit-only affordances as tools: extension management (ext_*) + browser_back/forward/reload + pane_set_label."

All of these are already implemented and handled in src/toolLayer.ts. The bullet should be removed; the items should join the Done list at the bottom.

Impact

Agents and developers reading the README to discover available tools will miss 8 of the 45 tools. The roadmap section actively misleads them into thinking these tools don't exist yet.

Proposed Fix

• Update "Tools (37)" → "Tools (45)".
• Extend the browser-control list with browser_back, browser_forward, browser_reload.
• Add pane_set_label to the Panes section.
• Add an Extensions subsection documenting ext_list, ext_install, ext_remove, ext_set_enabled (cockpit-only, mirroring the native tools pattern).
• Remove the "Full MCP parity" bullet from "Where to take it next"; add its items to the Done list.

Affected Files

• README.md (Tools section, "Where to take it next" bullet, Done list)