refactor: reduce CLAUDE.md size by 32% with hierarchical documentation

Refactored CLAUDE.md from 50,495 to 34,202 characters (32% reduction) by
extracting detailed procedures into reference documentation while keeping
workflow orchestration in the main file.

Created /reference/workflows/ directory:
- checkpoint-scripts.md - Checkpoint message templates
- album-planning-phases.md - 7 Planning Phases detailed guide
- source-verification-handoff.md - Human verification procedures
- error-recovery.md - Edge case recovery procedures
- release-procedures.md - Album art generation and release steps

Created /reference/distribution.md:
- Streaming lyrics format guidelines
- Explicit content word lists and checking procedures

CLAUDE.md changes:
- Compressed checkpoint sections (kept triggers/actions, moved verbose messages)
- Condensed Audio Mastering section (brief overview → reference)
- Condensed Sheet Music section (summary → reference)
- Simplified 7 Planning Phases (summary → full details in reference)
- Simplified Human Verification Handoff (triggers → procedures in reference)
- Simplified Error Recovery (quick ref → full procedures in reference)
- Simplified Album Art Generation (workflow → detailed steps in reference)
- Simplified Releasing an Album (steps → procedures in reference)
- Simplified Distribution Guidelines (summary → full guidelines in reference)
- Streamlined Creating Content and Suno Generation sections

Architecture improvement:
- CLAUDE.md: Workflow orchestration (WHEN/WHY)
- /reference/workflows/: Detailed procedures (HOW)
- Skills & reference: Deep expertise and technical specs

Benefits:
- 32% smaller CLAUDE.md loads faster in every session
- Easier to maintain specific workflows without bloating main file
- Clear separation between orchestration and detailed procedures
- Room for future additions without exceeding size limits

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

Author: bitwize-music

CHANGELOG.md

@@ -13,8 +13,27 @@ This project uses [Conventional Commits](https://conventionalcommits.org/) and [
   - Auto-detects platform and clipboard utility
   - Config-aware path resolution
   - Usage: `/clipboard <content-type> <album-name> <track-number>`
+- Workflow reference documentation in `/reference/workflows/`
+  - `checkpoint-scripts.md` - Detailed checkpoint message templates
+  - `album-planning-phases.md` - The 7 Planning Phases detailed guide
+  - `source-verification-handoff.md` - Human verification procedures
+  - `error-recovery.md` - Edge case recovery procedures
+  - `release-procedures.md` - Album art generation and release steps
+- `/reference/distribution.md` - Streaming lyrics format and explicit content guidelines
 
 ### Changed
+- **CLAUDE.md refactored for performance** - Reduced from 50,495 to 34,202 characters (32% reduction)
+  - Compressed checkpoint sections - Kept triggers/actions, moved verbose messages to `/reference/workflows/checkpoint-scripts.md`
+  - Condensed Audio Mastering section - Brief overview with reference to existing `/reference/mastering/mastering-workflow.md`
+  - Condensed Sheet Music section - Summary with reference to `/reference/sheet-music/workflow.md`
+  - Condensed Album Art Generation - Core workflow with reference to `/reference/workflows/release-procedures.md`
+  - Condensed 7 Planning Phases - Summary with reference to `/reference/workflows/album-planning-phases.md`
+  - Condensed Human Verification Handoff - Triggers with reference to `/reference/workflows/source-verification-handoff.md`
+  - Condensed Error Recovery - Quick reference with link to `/reference/workflows/error-recovery.md`
+  - Condensed Distribution Guidelines - Combined streaming lyrics and explicit content with reference to `/reference/distribution.md`
+  - Simplified Creating Content sections - Condensed album creation and file import workflows
+  - Simplified Suno Generation Workflow - Streamlined process description
+  - Architecture: CLAUDE.md now focuses on workflow orchestration (WHEN/WHY), detailed procedures in reference docs (HOW)
 
 ### Fixed