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<h1 id="changelog">Changelog<a class="headerlink" href="#changelog" title="Permanent link">¶</a></h1>
<p>All notable changes to this project will be documented in this file.</p>
<p>The format is based on <a href="https://keepachangelog.com/en/1.0.0/">Keep a Changelog</a>,
and this project adheres to <a href="https://semver.org/spec/v2.0.0.html">Semantic Versioning</a>.</p>
<h2 id="100-2025-10-09">[1.0.0] - 2025-10-09<a class="headerlink" href="#100-2025-10-09" title="Permanent link">¶</a></h2>
<p>🎉 <strong>Production Release: CortexGraph v1.0.0</strong></p>
<p>This is the first production-ready release of CortexGraph (formerly CortexGraph), a temporal memory management system for AI assistants with human-like memory dynamics.</p>
<h3 id="major-features">🚀 Major Features<a class="headerlink" href="#major-features" title="Permanent link">¶</a></h3>
<h4 id="complete-rebranding">Complete Rebranding<a class="headerlink" href="#complete-rebranding" title="Permanent link">¶</a></h4>
<ul>
<li><strong>Renamed from CortexGraph to CortexGraph</strong></li>
<li>Updated all references, paths, and documentation</li>
<li>Changed storage paths from <code>~/.stm/</code> to <code>~/.config/cortexgraph/</code> (XDG-compliant)</li>
<li>Updated command names from <code>stm-*</code> to <code>cortexgraph-*</code></li>
<li>Updated environment variables from CORTEXGRAPH_<em> to CORTEXGRAPH_</em></li>
<li>Repository moved to https://github.com/prefrontal-systems/cortexgraph</li>
</ul>
<h4 id="simplified-installation">Simplified Installation<a class="headerlink" href="#simplified-installation" title="Permanent link">¶</a></h4>
<ul>
<li><strong>UV Tool Install Support</strong></li>
<li>One-command installation: <code>uv tool install git+https://github.com/simplemindedbot/cortexgraph.git</code></li>
<li>Simplified MCP configuration: <code>{"command": "cortexgraph"}</code> (no more complex paths)</li>
<li>All configuration moved to <code>~/.config/cortexgraph/.env</code> (not MCP config)</li>
<li>Automatic installation of all 7 CLI commands</li>
</ul>
<h4 id="memory-consolidation">Memory Consolidation<a class="headerlink" href="#memory-consolidation" title="Permanent link">¶</a></h4>
<ul>
<li><strong>Algorithmic Memory Consolidation</strong> (<code>consolidate_memories</code> tool)</li>
<li>Smart content merging with duplicate detection</li>
<li>Preview mode to see proposed merges before applying</li>
<li>Apply mode to execute consolidation</li>
<li>Auto-detection of high-cohesion clusters</li>
<li>Metadata merging: tags, entities, timestamps, strength</li>
<li>Relation tracking via <code>consolidated_from</code> links</li>
<li>Strength bonuses based on cluster cohesion (capped at 2.0)</li>
<li>100% test coverage (15 tests)</li>
</ul>
<h4 id="privacy-local-storage">Privacy & Local Storage<a class="headerlink" href="#privacy-local-storage" title="Permanent link">¶</a></h4>
<ul>
<li><strong>Emphasized Local-First Design</strong></li>
<li>All data stored locally (no cloud services, no tracking)</li>
<li>Human-readable JSONL format for short-term memory</li>
<li>Markdown files (Obsidian-compatible) for long-term memory</li>
<li>Git-friendly formats for version control</li>
<li>Complete user control and transparency</li>
</ul>
<h3 id="added">📦 Added<a class="headerlink" href="#added" title="Permanent link">¶</a></h3>
<ul>
<li>Migration tool (<code>cortexgraph-migrate</code>) to upgrade from old STM Server installations</li>
<li>Comprehensive contributing guide with platform-specific instructions</li>
<li>Windows/Linux tester recruitment documentation</li>
<li>Future roadmap documentation</li>
<li>Privacy and local storage documentation sections</li>
<li>ELI5 guide updates with simplified installation steps</li>
<li>All AI assistant instruction files (CLAUDE.md, AGENTS.md, GEMINI.md)</li>
</ul>
<h3 id="changed">🔄 Changed<a class="headerlink" href="#changed" title="Permanent link">¶</a></h3>
<ul>
<li><strong>Storage paths</strong>: Migrated to XDG-compliant <code>~/.config/cortexgraph/</code></li>
<li><strong>Command names</strong>: All CLI tools renamed from <code>stm-*</code> to <code>cortexgraph-*</code></li>
<li><strong>Configuration</strong>: Simplified MCP setup, all settings in <code>.env</code> file</li>
<li><strong>Installation</strong>: UV tool install as recommended method</li>
<li><strong>Documentation</strong>: Complete overhaul across all files</li>
</ul>
<h3 id="fixed">🐛 Fixed<a class="headerlink" href="#fixed" title="Permanent link">¶</a></h3>
<ul>
<li><code>.env.example</code> updated with correct decay model parameters</li>
<li>LTM index path configuration</li>
<li>Python path requirements in documentation</li>
<li>Server initialization using <code>mcp.run()</code> instead of deprecated <code>mcp.run_forever()</code></li>
</ul>
<h3 id="documentation">📚 Documentation<a class="headerlink" href="#documentation" title="Permanent link">¶</a></h3>
<ul>
<li>Complete documentation suite with consistent branding</li>
<li>README.md: Quick start, installation, configuration</li>
<li>CLAUDE.md: AI assistant instructions</li>
<li>CONTRIBUTING.md: Development guide</li>
<li>ELI5.md: Beginner-friendly explanation</li>
<li>docs/deployment.md: Production deployment</li>
<li>docs/architecture.md: System design</li>
<li>docs/api.md: Tool reference</li>
<li>docs/graph_features.md: Knowledge graph guide</li>
</ul>
<h3 id="implementation-status">🎯 Implementation Status<a class="headerlink" href="#implementation-status" title="Permanent link">¶</a></h3>
<p><strong>11 MCP Tools Implemented:</strong>
1. <code>save_memory</code> - Save memory with entities, tags, optional embeddings
2. <code>search_memory</code> - Search with temporal filtering and semantic similarity
3. <code>search_unified</code> - Unified search across STM and LTM
4. <code>touch_memory</code> - Reinforce memory (update last_used, use_count, strength)
5. <code>gc</code> - Garbage collect low-scoring memories
6. <code>promote_memory</code> - Promote high-value memories to long-term storage
7. <code>cluster_memories</code> - Find similar memories for consolidation
8. <code>consolidate_memories</code> - Algorithmic merge with preview/apply modes
9. <code>read_graph</code> - Return entire knowledge graph with memories and relations
10. <code>open_memories</code> - Retrieve specific memories by ID with relations
11. <code>create_relation</code> - Create explicit links between memories</p>
<p><strong>7 CLI Commands:</strong>
- <code>cortexgraph</code> - MCP server
- <code>cortexgraph-migrate</code> - Migration from old installations
- <code>cortexgraph-search</code> - Unified search across STM and LTM
- <code>cortexgraph-maintenance</code> - Storage stats and compaction
- <code>cortexgraph-index-ltm</code> - Index Obsidian vault
- <code>cortexgraph-backup</code> - Git backup operations
- <code>cortexgraph-vault</code> - Markdown file operations</p>
<h3 id="core-innovations">💡 Core Innovations<a class="headerlink" href="#core-innovations" title="Permanent link">¶</a></h3>
<ul>
<li><strong>Temporal Decay</strong>: Power-law (default), exponential, and two-component models</li>
<li><strong>Reinforcement Learning</strong>: Memories strengthen with repeated access</li>
<li><strong>Smart Prompting</strong>: Natural memory operations without explicit commands</li>
<li><strong>Knowledge Graph</strong>: Entities, relations, and memory nodes</li>
<li><strong>Two-Layer Architecture</strong>: STM (JSONL) + LTM (Markdown/Obsidian)</li>
</ul>
<h3 id="license">📄 License<a class="headerlink" href="#license" title="Permanent link">¶</a></h3>
<p>MIT License - Full user control and transparency</p>
<hr />
<h2 id="030-2025-10-07">[0.3.0] - 2025-10-07<a class="headerlink" href="#030-2025-10-07" title="Permanent link">¶</a></h2>
<h3 id="added_1">Added<a class="headerlink" href="#added_1" title="Permanent link">¶</a></h3>
<ul>
<li><strong>ELI5.md</strong> - Simple, beginner-friendly guide explaining what this project does and how to use it.</li>
<li>Decay models: power-law (default), exponential, and two-component with configurable parameters.</li>
<li>Unified search surfaced as an MCP tool (<code>search_unified</code>) alongside the CLI (<code>cortexgraph-search</code>).</li>
<li>Maintenance CLI (<code>cortexgraph-maintenance</code>) to show JSONL storage stats and compact files.</li>
<li>Tests for decay models, LTM index parsing/search, and unified search merging.</li>
<li>Deployment docs for decay model configuration and tuning tips.</li>
<li>Tuning cheat sheet and model selection guidance in README and scoring docs.</li>
</ul>
<h3 id="changed_1">Changed<a class="headerlink" href="#changed_1" title="Permanent link">¶</a></h3>
<ul>
<li>JSONL-only storage: removed SQLite and migration tooling.</li>
<li>Server logs now include the active decay model and key parameters on startup.</li>
<li>Standardized on Ruff for linting and formatting.</li>
</ul>
<h3 id="removed">Removed<a class="headerlink" href="#removed" title="Permanent link">¶</a></h3>
<ul>
<li>SQLite database implementation and migration modules.</li>
</ul>
<h2 id="020-2025-01-07">[0.2.0] - 2025-01-07<a class="headerlink" href="#020-2025-01-07" title="Permanent link">¶</a></h2>
<ul>
<li>JSONL storage, LTM index, Git integration, and smart prompting docs.</li>
</ul>
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