feat(4.0.0): web console — lead board + live findings + real CLI REPL

New web/ app (zero npm deps, Node http built-ins only):
- server.js reads agents_md/ to build a categorized lead board (435 agents
  auto-classified into Business Logic / Broken Access Control / Injection /
  LLM Application / Auth & Session / SSRF / API / Cloud & Infra / etc.),
  reads runs/ for history, and spawns the compiled neurosploit CLI binary
  for every exploitation job — structured findings/phase/progress are parsed
  from its stdout (finding_json:/phase lines), same signal the TUI uses.
- REPL drawer spawns `neurosploit` with no subcommand (real interactive
  session, Reader::Plain over the piped stdin) and streams stdin/stdout —
  every /command works exactly as in a terminal, nothing reimplemented.
- SSE endpoints for both job and REPL streams; run/finding/report assets
  served under /api/runs/:id/asset/*.
- public/{index,app.js,style.css}: lead board with category toggles + custom
  leads + Start Exploitation, live run view (progress/findings/log), run
  detail view, REPL drawer — screenshot-inspired layout.
- web/API.md: full endpoint reference. web/README.md: quick start.

Bump version 3.6.9 -> 4.0.0 (Cargo.toml, CLI banners, README/TUTORIAL).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0129WdYHccPsH27k5GGuwijd

neurosploit-rs/app/src/repl.rs

@@ -1,4 +1,4 @@
-//! NeuroSploit v3.6.9 — interactive session (Claude-Code / Codex / Cursor-CLI style).
+//! NeuroSploit v4.0.0 — interactive session (Claude-Code / Codex / Cursor-CLI style).
 //!
 //! Launched when `neurosploit` runs with no subcommand. A persistent REPL with
 //! real line editing (arrow-key history recall, Ctrl-A/E/K, paste), model
@@ -371,7 +371,7 @@ pub async fn repl(base: &Path) -> anyhow::Result<()> {
     let backends = harness::installed_cli_backends();
     println!("\x1b[1m");
     println!("  ███╗   ██╗███████╗██╗   ██╗██████╗  ██████╗");
-    println!("  ████╗  ██║██╔════╝██║   ██║██╔══██╗██╔═══██╗   NeuroSploit v3.6.9");
+    println!("  ████╗  ██║██╔════╝██║   ██║██╔══██╗██╔═══██╗   NeuroSploit v4.0.0");
     println!("  ██╔██╗ ██║█████╗  ██║   ██║██████╔╝██║   ██║   interactive harness");
     println!("  ██║╚██╗██║██╔══╝  ██║   ██║██╔══██╗██║   ██║   by Joas A Santos");
     println!("  ██║ ╚████║███████╗╚██████╔╝██║  ██║╚██████╔╝   & Red Team Leaders");