feat: add obsidian-memory plugin

plugins/obsidian-memory/.claude-plugin/plugin.json

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+{
+  "name": "obsidian-memory",
+  "description": "Long-term memory for Claude — remembers preferences, decisions, and project context across sessions using an Obsidian vault",
+  "version": "1.0.0",
+  "author": {
+    "name": "MSApps",
+    "url": "https://msapps.mobi"
+  },
+  "license": "MIT",
+  "keywords": [
+    "obsidian",
+    "memory",
+    "context",
+    "preferences",
+    "sessions",
+    "sosa-agents"
+  ],
+  "platforms": [
+    "claude-code",
+    "cowork"
+  ],
+  "sosa": {
+    "compliant": true,
+    "level": 2,
+    "impact": "medium",
+    "methodology": "https://github.com/MSApps-Mobile/claude-plugins/blob/main/docs/SOSA.md",
+    "whitepaper": "https://github.com/MSApps-Mobile/claude-plugins/blob/main/docs/sosa-whitepaper.pdf",
+    "pillars": {
+      "supervised": "User controls what gets stored — all files are local Markdown",
+      "orchestrated": "Structured vault folders with cross-session retrieval",
+      "secured": "Local filesystem only, no external APIs, user owns all data",
+      "agents": "R=long-term-memory, T=filesystem, M=obsidian-vault, P=store-retrieve-update"
+    }
+  },
+  "topics": [
+    "sosa-agents"
+  ]
+}

plugins/obsidian-memory/CLAUDE.md

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+# Obsidian Memory
+
+Give Claude long-term memory across sessions using a local Obsidian vault. Remember preferences, track decisions, archive session summaries, and store quick facts.
+
+## Available Skills
+
+- **Remember** — Store preferences, tools, communication style, and project context
+- **Recall** — Retrieve stored knowledge about the user, projects, or past decisions
+- **Archive** — Save session summaries for seamless handoffs between sessions
+- **Forget** — Remove outdated or incorrect information on command
+
+## Memory Structure
+
+All memory lives in the user's Obsidian vault as Markdown files, organized into existing vault folders:
+
+- **Preferences/** — User preferences, communication style, tools, workflow
+- **Projects/** — One file per active project with context and status
+- **People/** — Key contacts and collaborators
+- **Daily/** — Daily notes including session summaries and decisions
+- **Claude Memory/** — Claude-specific storage (decisions log, quick facts, session archive)
+
+## How It Works
+
+Unlike the Notion Memory plugin which requires an MCP connector, this plugin operates directly on local Markdown files using Claude's built-in filesystem tools (Read, Write, Edit, Glob, Grep). No external API or connector is needed.
+
+## Configuration
+
+Set the vault path in the skill or detect it automatically. Default: `~/Library/CloudStorage/GoogleDrive-*/My Drive/Obsidian Vault/*/`
+
+## Common Workflows
+
+- "Remember I prefer dark mode" → stores preference in Preferences/
+- "What do you know about BPure?" → searches vault for BPure references
+- "Save what we did today" → appends to today's Daily note + session archive
+- "Forget my old email" → removes outdated fact
+- "Log the decision to use React" → adds to Claude Memory/Decisions Log
+
+## Best Practices
+
+- Leverage existing vault structure — don't duplicate what's already there
+- Store information immediately when the user shares a preference or makes a decision
+- Always check relevant vault files at the start of a session
+- Keep Quick Facts concise — one line per fact
+- When recalling, search across all vault folders using Grep
+- Update rather than duplicate when information changes
+- Respect "forget" commands — fully remove the information
+- Use Obsidian-compatible Markdown (support `[[wiki-links]]` and YAML frontmatter)

plugins/obsidian-memory/README.md

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+# Obsidian Memory — Claude Plugin by MSApps
+
+Give Claude long-term memory across sessions using your local Obsidian vault. Claude remembers your preferences, decisions, project context, and session history — all stored as plain Markdown files you own.
+
+## What it does
+
+- **Remembers** preferences, tools, communication style
+- **Tracks** decisions with reasoning and dates
+- **Archives** session summaries for seamless handoffs
+- **Stores** quick facts and project context
+- **Forgets** on command — you're always in control
+
+## How it works
+
+Memory is stored as Markdown files in your Obsidian vault, organized into folders:
+
+- **Preferences/** — who you are, how you work
+- **Projects/** — one file per active project
+- **People/** — key contacts and collaborators
+- **Daily/** — daily notes with session summaries
+- **Claude Memory/** — decisions log, quick facts, session archive
+
+Unlike the Notion-based memory plugin, this works entirely on the local filesystem — no external API or connector required.
+
+## Installation
+
+**Claude Code (CLI):**
+```bash
+/plugin marketplace add MSApps-Mobile/claude-plugins
+/plugin install obsidian-memory@msapps-plugins
+```
+
+**Cowork:**
+1. Settings → Plugins → Marketplaces → Add → `MSApps-Mobile/claude-plugins`
+2. Search "obsidian-memory" → Install
+
+## Requirements
+
+- An **Obsidian vault** accessible on the local filesystem
+- Claude Code or Cowork with filesystem access to the vault directory
+
+## Configuration
+
+The plugin auto-detects common Obsidian vault locations. If your vault is in a non-standard location, set the path in the skill configuration.
+
+## Usage
+
+Just talk to Claude naturally:
+
+- "Remember that I prefer dark mode"
+- "What do you know about the BPure project?"
+- "Save what we did today"
+- "Forget my old email address"
+
+Claude also saves context automatically when it detects preferences, decisions, or project info.
+
+## Advantages over Notion Memory
+
+| Feature | Obsidian Memory | Notion Memory |
+|---------|----------------|---------------|
+| Requires external API | No | Yes (Notion MCP) |
+| Data location | Local files | Cloud (Notion) |
+| Works offline | Yes | No |
+| File format | Plain Markdown | Notion blocks |
+| User can edit directly | Yes (any text editor) | Yes (Notion app) |
+| Supports wiki-links | Yes | No |
+| Backlinks & graph view | Yes (via Obsidian) | No |
+
+## License
+
+MIT — Free and open source.
+
+## Author
+
+**MSApps** — [msapps.mobi](https://msapps.mobi) | [michal@msapps.mobi](mailto:michal@msapps.mobi)