Add C2B (Chat2Business) console at /c2b/ + dock launcher

A self-contained, client-side Chat2Business tool hosted on captkernel.com.
Visitors bring their own Anthropic API key (stored only in their browser,
sent only to api.anthropic.com); the page loads no third-party scripts.

It runs the C2B pipeline entirely in the browser via the Anthropic Messages
API with direct browser access:
  structure (idea brief) -> research dossier -> 5-persona Council in parallel
  -> Chair verdict with a parsed 0-100 score + tier badge -> MVP spec
  (or a Don't-Build report). A 'special instructions' box is injected into
  every stage so users can steer and iterate; a live token/cost meter and
  model selector (Sonnet 5 / Opus 5 / Haiku 4.5) are included.

Homepage: adds one dock tile (data-link="c2b") that navigates to /c2b/,
matching the existing github/x launcher pattern. Two small, reversible hunks;
no changes to the window/desktop system.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Author: claude