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>

tools/audit-prompt.md

@@ -510,7 +510,7 @@ Here's an example of what the audit report looks like:
 | **PostToolUse** | Hook that runs AFTER Claude executes a tool - great for formatting |
 | **Plan Mode** | Read-only exploration mode for safe analysis before making changes |
 | **Thinking Mode** | Extended thinking (Opus 4.5: ON by default). Toggle with Alt+T, configure in /config |
-| **Trinity Pattern** | Combining Plan Mode + Think Levels + MCP for complex tasks |
+| **Trinity Pattern** | Combining Plan Mode + Extended Thinking + MCP for complex tasks |
 | **Verify Gate** | CI/CD pattern: build → lint → test → typecheck before merge |
 | **Context Zones** | Green (0-50%), Yellow (50-70%), Red (70%+) - context usage thresholds |
 | **Data Retention** | Anthropic stores conversations: 5 years (default), 30 days (opt-out), 0 days (Enterprise ZDR) |