v1.6.2

Summary

• Treat empty parent_id values as omitted when creating root concepts.
• Make installer updates non-destructive for existing user configs and unmarked plugin/command files.
• Add multi-process database concurrency regression coverage.

Validation

• npm test
• npm run build

v1.6.1

What's Changed

• Add get_concept tool for exact ID lookup by @mikaelj in #10

Full Changelog: v1.6.0...v1.6.1

v1.6.0

What's New

Codex install target (#9)

• megamemory install --target codex now configures megamemory for OpenAI's Codex CLI/IDE/App
• Primary path uses codex mcp add CLI; falls back to writing TOML directly to ~/.codex/config.toml
• Writes ~/.codex/AGENTS.md with knowledge graph workflow instructions

SQLite concurrency fix (#8)

• softDeleteNode(), hardDeleteNode(), and resolveConflict() now wrapped in transactions to prevent orphaned edges under concurrent multi-process access
• Reentrant transaction support via _txDepth counter
• runWithRetry() with exponential backoff for SQLITE_BUSY errors
• busy_timeout increased from 1000ms to 5000ms
• Graceful SIGINT/SIGTERM shutdown in MCP server

v1.5.0

Concurrency Safety & Schema v4

This release adds robust multi-process SQLite safety and schema improvements for concurrent MCP access.

Changes

• SQLite busy_timeout & synchronous pragmas — busy_timeout=5000 and synchronous=NORMAL for multi-process safety
• Atomic createConcept transactions — node + edges wrapped in a single transaction
• Migration serialization — BEGIN IMMEDIATE prevents concurrent migration races
• UNIQUE constraint on edges with auto-deduplication — schema v4 migration adds a unique index on (from_id, to_id, relation) and deduplicates existing edges
• INSERT OR IGNORE for duplicate edge handling — prevents constraint violations on concurrent edge creation

v1.4.1

Strengthen megamemory prompt wording from suggestive to mandatory. Models with large thinking budgets were rationalizing away soft instructions — upgraded to 'You must call' language with explicit ordering and 'no implicit memory' framing. Ref #6.

v1.4.0

Add timeline playback to web explorer

v1.3.3

• Fix: Restore full megamemory stats command with all 5 sections (Database, Graph, list_roots, Kinds, Size)
• Fix: Add missing await for async stats command in CLI router
• Includes timeline functionality merged from visualization branch

v1.3.1

• Replace init with interactive install command supporting opencode, Claude Code, and Antigravity
• Add semantic search to web explorer
• Standardize error formatting (via @mikaelj)

v1.2.1

Add test coverage for embedding validation and Buffer deserialization fixes from PR #2.

v1.2.0

Full Changelog: v1.1.2...v1.2.0