docs: add plugin marketplace install for session-summary

Link to FlorianBruniaux/claude-code-plugins in ecosystem section
and hooks README. Plugin system auto-wires hooks, no manual config.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -475,6 +475,17 @@ Same agentic capabilities as Claude Code, but through a visual interface with no
 
 **Status**: Research preview (Pro $20/mo or Max $100-200/mo, macOS only, **VPN incompatible**)
 
+### Claude Code Plugins (Marketplace)
+
+Production-ready plugins from this guide, installable in one command:
+
+```bash
+claude plugin marketplace add FlorianBruniaux/claude-code-plugins
+claude plugin install session-summary@florian-claude-tools
+```
+
+> **[FlorianBruniaux/claude-code-plugins](https://github.com/FlorianBruniaux/claude-code-plugins)** — Session analytics, more plugins coming
+
 ### Complementary Resources
 
 | Project | Focus | Best For |

examples/hooks/README.md

@@ -296,6 +296,13 @@ Captures RTK cumulative stats at session start for delta tracking. Paired with `
 
 Full session analytics with 15 configurable sections, CLI config tool, and JSONL logging.
 
+**Plugin Install (Recommended)**:
+```bash
+claude plugin marketplace add FlorianBruniaux/claude-code-plugins
+claude plugin install session-summary@florian-claude-tools
+```
+Hooks are auto-wired, no manual configuration needed. See the [plugin repo](https://github.com/FlorianBruniaux/claude-code-plugins) for details.
+
 **Sections** (all configurable via env vars or config file):
 
 | Section | Default | Description |
@@ -406,7 +413,7 @@ Turns: 12 (8 interactive · 4 auto) · Avg 6.7s/turn
 }
 ```
 
-**Quick Install**: `~/.claude/hooks/session-summary-config.sh install` (copies hooks + updates settings.json)
+**Quick Install**: Plugin system (see above) or manual: `session-summary-config.sh install` (copies hooks + updates settings.json)
 
 **How it compares to tweakcc's `/cost` patch**: