feat: initial companion repo for OpenClaw vs Claude Code article

40 files demonstrating every major OpenClaw capability using Claude Code:
- 3 agents (researcher, writer, reviewer)
- 3 skills (daily-briefing, slack-message, web-research)
- 2 security hooks (pre-tool-use blocker, post-tool-use logger)
- 10 self-contained examples with copy-paste prompts
- Complete feature map (20 capabilities, 11 full match, 7 different, 2 gap)
- Security docs including NemoClaw comparison
- Automation, messaging, browser, memory documentation

Zero dependencies. Clone and run.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

examples/05-memory-system/prompt.md

@@ -0,0 +1,58 @@
+# Example 05: Memory System
+
+**Capability:** Claude Code maintains persistent memory across sessions through a
+hierarchy of markdown files. What is written in one session is available in the next.
+
+**OpenClaw equivalent:** Daily markdown logs + MEMORY.md + vector search (SQLite-vec).
+
+---
+
+## How the Hierarchy Works
+
+Claude Code loads context in this order, from broadest to narrowest:
+
+1. `~/.claude/CLAUDE.md` - global preferences, always loaded
+2. `CLAUDE.md` in the project root - project-specific config, always loaded
+3. `memory/MEMORY.md` - session state, loaded if referenced in CLAUDE.md
+4. `.claude/` managed memory - auto-updated by Claude when `--memory` is active
+
+The file loaded earlier provides the frame. Later files narrow it.
+
+---
+
+## The Prompt
+
+```
+Read this project's CLAUDE.md and summarize what you learn about the project
+in three bullet points.
+
+Then create a file at memory/project-notes.md with:
+- Today's date as a header
+- The three-bullet summary
+- A note that says "Memory system demonstrated successfully"
+
+Finally, explain in one paragraph how this file will be available in the
+next Claude Code session without re-reading CLAUDE.md.
+```
+
+---
+
+## What Happens
+
+Claude Code will:
+
+1. Use Read to load `CLAUDE.md` from the project root
+2. Synthesize the project context into three bullets
+3. Use Write to create `memory/project-notes.md`
+4. Explain how CLAUDE.md references cause files to be auto-loaded
+
+---
+
+## Why This Matters
+
+OpenClaw uses SQLite-vec for semantic memory search across sessions. Claude Code
+uses structured markdown with explicit file references. Both achieve persistence.
+The markdown approach is more inspectable: you can read, edit, and version control
+every piece of memory Claude has about your project.
+
+The `memory/MEMORY.md` file in this repo shows the pattern at scale.