feat(share): terminal-only sharing, bigger + full-screen — 0.25.0

Scope M12 down to a single shared-terminal mode (D23, amends D16):
- Share page rewritten terminal-only: host shares their PTY/shell; guest watches
  and may type only if the host ticks "Allow the guest to type" (read-only
  otherwise — the D9 consent exception). Terminal is larger; either side can pop
  it full-screen (Esc to exit).
- Removed the read-only stats view + HTTP server (core/share.py) and the
  `rigdoctor share serve` CLI; deleted their tests.
- Docs: D23 added; SPEC/MODULES/ROADMAP updated (M12 → done, terminal-only).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rigdoctor"
-version = "0.24.0"
+version = "0.25.0"
 description = "Modular hardware monitoring & crash diagnostics for Linux gamers."
 readme = "README.md"
 requires-python = ">=3.11"