feat: add ecosystem positioning, install script & new commands

Ecosystem & Positioning:
- Add README section with competitive positioning (davila7, awesome-claude-code, wesammustafa)
- Add comparison table highlighting unique features (architecture, TDD/SDD, quiz, YAML index)
- Add ecosystem section to reference.yaml

Template Installation:
- Add scripts/install-templates.sh for one-liner template installation
- Support for agents, hooks, commands, skills, memory templates

New Commands:
- catchup, explain, optimize, refactor, security, ship

New Content:
- Semantic anchors catalog and documentation
- Extended guide content (+470 lines)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

examples/README.md

@@ -19,6 +19,7 @@ Ready-to-use templates for Claude Code configuration.
 | [`github-actions/`](./github-actions/) | CI/CD workflows for GitHub Actions |
 | [`workflows/`](./workflows/) | Advanced development workflow guides |
 | [`modes/`](./modes/) | Behavioral modes for Claude (SuperClaude) |
+| [`semantic-anchors/`](./semantic-anchors/) | Precise vocabulary for better LLM outputs |
 
 ## Quick Start
 
@@ -71,6 +72,12 @@ Ready-to-use templates for Claude Code configuration.
 | [diagnose.md](./commands/diagnose.md) | `/diagnose` | Interactive troubleshooting assistant (FR/EN) |
 | [validate-changes.md](./commands/validate-changes.md) | `/validate-changes` | LLM-as-a-Judge pre-commit validation |
 | [quiz.md](./commands/quiz.md) | `/quiz` | Self-testing for learning concepts |
+| [catchup.md](./commands/catchup.md) | `/catchup` | Restore context after /clear |
+| [security.md](./commands/security.md) | `/security` | Quick OWASP security audit |
+| [refactor.md](./commands/refactor.md) | `/refactor` | SOLID-based code improvements |
+| [explain.md](./commands/explain.md) | `/explain` | Code explanations (3 depth levels) |
+| [optimize.md](./commands/optimize.md) | `/optimize` | Performance analysis and roadmap |
+| [ship.md](./commands/ship.md) | `/ship` | Pre-deploy checklist |
 
 ### Hooks
 | File | Event | Purpose |
@@ -147,6 +154,13 @@ Ready-to-use templates for Claude Code configuration.
 
 > **See [modes/README.md](./modes/README.md) for installation and SuperClaude framework reference**
 
+### Semantic Anchors
+| File | Purpose |
+|------|---------|
+| [anchor-catalog.md](./semantic-anchors/anchor-catalog.md) | Comprehensive catalog of precise technical terms for prompting |
+
+> **See [Section 2.7](../guide/ultimate-guide.md#27-semantic-anchors) in the guide for how to use semantic anchors**
+
 ---
 
 *See the [main guide](../guide/ultimate-guide.md) for detailed explanations, or the [architecture guide](../guide/architecture.md) for how Claude Code works internally.*