Release v2.0.0: add pm-ai-shipping plugin, red-team execution skill, refresh README

New
- pm-ai-shipping (9th plugin) — AI Shipping Kit: document a vibe-coded app, audit
  security/performance against intended behavior, map test coverage, and compile a
  reviewer-ready shipping packet (2 skills, 5 commands).
- pm-execution: strategy-red-team skill + /red-team-prd command (now 16 skills, 11 commands).

Changed
- Bump all versions 1.0.1 -> 2.0.0 (marketplace.json + all 9 plugin.json) in lockstep.
- README: new plugins.png hero + examples.png in "How It Works"; counts updated to
  9 plugins / 68 skills / 42 commands across tagline, install block, and per-plugin sections.
- CLAUDE.md: 9-plugin structure, plugin table, and version note updated.

Validator: 9 plugins, 68 skills, 42 commands, 110 components, 0 warnings.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

pm-market-research/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "pm-market-research",
-  "version": "1.0.1",
+  "version": "2.0.0",
   "description": "Market research skills for PMs: user personas, market segmentation, sentiment analysis, and competitive analysis.",
   "author": {
     "name": "Paweł Huryn",