v2.1: Unify skills and slash commands pattern (#5)

* v2.1: Unify skills and slash commands pattern

Following the new Claude Code standard where skills and slash commands
are merged into a single unified pattern:

- Convert commands to skills: /daily-workflow, /weekly-review, /push, /onboard
- Each skill has SKILL.md with frontmatter (name, description, allowed-tools)
- Skills can be invoked with /skill-name OR auto-discovered by Claude
- Remove deprecated .claude/commands/ directory
- Update all documentation to reference new unified pattern
- Update agents to reference skills instead of commands
- Update CLAUDE.md with unified skills table

This aligns with Claude Code 2.1+ where skills and slash commands
share the same features and invocation patterns.

* Simplify skill names: daily-workflow → daily, weekly-review → weekly

Rename verbose skill folders and names to shorter, cleaner invocations:
- daily-workflow/ → daily/ (invoked with /daily)
- weekly-review/ → weekly/ (invoked with /weekly)

Update all references across documentation, agents, and skill files
to use consistent short command names.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

README.md

@@ -6,7 +6,7 @@
 
 A complete personal knowledge management system that combines Obsidian's powerful note-taking with Claude Code's AI assistance. Go from zero to a fully functional PKM in 15 minutes or less.
 
-**v2.0** - Now with hooks, custom agents, skills, and modular rules.
+**v2.1** - Unified skills pattern (skills and slash commands merged), hooks, agents, and rules.
 
 ## ✨ Features
 
@@ -17,10 +17,10 @@ A complete personal knowledge management system that combines Obsidian's powerfu
 - **🔄 Version Controlled** - Never lose a thought with automatic Git backups
 - **🎨 Fully Customizable** - Adapt templates and structure to your needs
 
-### AI-Powered (v2.0)
+### AI-Powered (v2.1)
+- **⚡ Unified Skills** - Skills and slash commands merged (`/daily`, `/weekly`, `/push`, `/onboard`)
 - **🪝 Hooks** - Auto-commit on save, session initialization
 - **🤖 Custom Agents** - Note organizer, weekly reviewer, goal aligner, inbox processor
-- **⚡ Skills** - Auto-discovered capabilities for vault ops, goal tracking, daily workflows
 - **📏 Modular Rules** - Path-specific conventions for markdown, productivity, projects
 - **🧠 Output Styles** - Productivity Coach for accountability
 - **📊 Status Line** - Vault stats in terminal (note count, inbox, uncommitted changes)
@@ -80,16 +80,18 @@ Your Vault/
 ├── .claude-plugin/
 │   └── plugin.json              # Plugin manifest
 ├── .claude/
-│   ├── commands/                # Slash commands (/daily, /weekly, /push, /onboard)
-│   ├── agents/                  # Custom AI agents (NEW)
+│   ├── agents/                  # Custom AI agents
 │   │   ├── note-organizer.md
 │   │   ├── weekly-reviewer.md
 │   │   ├── goal-aligner.md
 │   │   └── inbox-processor.md
-│   ├── skills/                  # Auto-discovered capabilities (NEW)
-│   │   ├── obsidian-vault-ops/
-│   │   ├── goal-tracking/
-│   │   └── daily-workflow/
+│   ├── skills/                  # Unified skills (invoke with /skill-name)
+│   │   ├── daily/               # /daily - Create daily notes, routines
+│   │   ├── weekly/              # /weekly - Weekly review process
+│   │   ├── push/                # /push - Git commit and push
+│   │   ├── onboard/             # /onboard - Load vault context
+│   │   ├── goal-tracking/       # Auto: Track goal progress
+│   │   └── obsidian-vault-ops/  # Auto: Vault file operations
 │   ├── hooks/                   # Event automation (NEW)
 │   │   ├── session-init.sh
 │   │   └── auto-commit.sh