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library-manager

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Smart audiobook library organizer - fixes messy folders using 4 book databases (Audnexus, OpenLibrary, Google Books, Hardcover) + AI verification. Web UI with undo, pending approvals, and drastic change protection.

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# Library Manager

**Smart Audiobook Library Organizer with Multi-Source Metadata & AI Verification**

[![Version](https://img.shields.io/badge/version-0.9.0--beta.156-blue.svg)](https://raw.githubusercontent.com/deucebucket/library-manager/main/CHANGELOG.md)
[![Docker](https://img.shields.io/badge/docker-ghcr.io-blue.svg)](https://ghcr.io/deucebucket/library-manager)
[![License](https://img.shields.io/badge/license-MIT-orange.svg)](https://raw.githubusercontent.com/deucebucket/library-manager/main/LICENSE)

*Automatically fix messy audiobook folders using real book databases + AI intelligence*

</div>

---

## Recent Changes (stable)

> **beta.156** - **MIT License and Documentation Sync**
> - Restored the project's MIT license and aligned contribution terms.
> - Synchronized provider, Skaldleita credential, multilingual model, and request-rate guidance with current behavior.

> **beta.155** - **Local AI Is Provider-Agnostic**
> - Added llama.cpp and generic OpenAI-compatible API support with live `/v1/models` discovery.
> - Removed hardcoded Ollama model fallbacks and fixed `undefined` model entries across API response shapes.
> - Skaldleita transcripts now continue into the selected AI fallback instead of stopping early.

> **beta.150** - **Fix: Hosted AI Model Picker Uses Live Provider Models** (Issue #216)
> - Replaced stale hardcoded Gemini/OpenRouter model dropdowns with editable model fields backed by live provider model lists.
> - Gemini models load from the configured Gemini key; OpenRouter models load from OpenRouter's `/models` endpoint.
> - Removed old hosted-model fallback IDs so misconfiguration fails clearly instead of silently retrying retired models.

> **beta.149** - **Fix: Watch-Folder Move Failures Now Appear in the UI** (Issue #211)
> - Three `INSERT` statements in the watch-folder worker referenced a phantom `added_at` column on the `books` table (the real column is `created_at`). Every insert silently raised `OperationalError`, caught by a `logger.debug` that hid the error. Result: watch-folder move failures never produced a `watch_folder_error` row — the UI never showed the failure, users only saw it in logs.
> - Fixed the column name and raised the swallow-except log level to `warning` with full traceback so future DB errors don't rot silently.

> **beta.148** - **Fix: Watch-Folder Retry Loop Across Restarts + Skaldleita server_notice** (Issue #208)
> - **Persistent watch-folder dedup** - `watch_folder_processed` is now a SQLite table instead of an in-memory `set()`. Restarts no longer wipe it, killing the retry loop that had one LM instance hammering Skaldleita's `/match` every 30 seconds on the same file for days.
> - **Honors Skaldleita's abort signal** - When the server detects a retry loop it sends a `server_notice` in the response. LM now logs it (with an upgrade URL) and, on `action=abort_task`, stops retrying that file immediately.

> **beta.147** - **Critical Fix: Hard Link Safety** (Issue #209)
> - **Stop silent copy+delete** - When "Use hard links" was enabled and the watch folder / library sat on different filesystems, LM used to copy every file and delete the originals. That broke torrent seeding and doubled disk use. Now LM fails fast with a clear error and leaves source files untouched.
> - **Pre-check filesystem compatibility** - Verifies `st_dev` match before any file operations when hard links are enabled.

> **beta.140** - **Feature: Custom Layer Builder** (Issue #186)
> - **Plugins tab** - New settings tab with 4-step wizard to add custom HTTP API metadata sources
> - **No-code API integration** - Configure URL templates, authentication, JSONPath response mapping, and confidence weights
> - **Live testing** - Test API calls with sample book data before saving, with mapped field preview

> **beta.134** - **Hotfix: Settings Page Crash** (Issue #173)
> - Jinja2 template recursion bug in hooks_settings.html caused blank settings page for all users on beta.133

> **beta.133** - **Fix: Stop Re-Searching Unresolved Books** (Issue #168)
> - Books marked `needs_attention` no longer re-queued every scan cycle (was causing 642K+ wasted API requests)
> - Added retry tracking with exponential backoff and configurable max retries

> **beta.132** - **Feature: Post-Processing Hooks** (Issue #166)
> - **Run commands or webhooks after renames** - Trigger external scripts (m4binder, ABS scan, Discord notifications) when a book is successfully renamed
> - **Template variables** - Use `{{author}}`, `{{title}}`, `{{new_path}}`, etc. in commands with automatic shell escaping
> - **Settings UI** - New Post-Processing tab with hook management, test button, and execution log

> **beta.130** - **Fix: Rate-Limited Batches No Longer Trigger False Exhaustion** (Issue #160)
> - **Rate-limited batches skipped** - When AI providers are rate-limited, batches are no longer counted toward the 3-strike "all processing layers exhausted" rule
> - **Circuit breaker awareness** - Layer 4 now waits for providers to recover instead of permanently marking identifiable books as failed
> - **Distinct signal for rate limiting** - `process_queue` returns `-1` (rate-limited) vs `0` (genuinely empty) so the worker can react correctly

> **beta.129** - **UI: Feedback Widget Moved to Nav Bar** (Issue #159)
> - **Bug icon in nav bar** - Feedback/bug report button moved from floating bottom-right circle to a consistent bug icon in the top navigation bar
> - **No more overlapping buttons** - Eliminates confusing dual floating buttons on the dashboard page

> **beta.125** - **Bug Fixes: Badge Counts, Author Matching, Pipeline Filters** (Issues #150, #152)
> - **Badge count fix** - Dashboard and library page queue counts now match actual processable items
> - **Author initial matching** - "C Alanson" now correctly matches "Craig Alanson", "JRR Tolkien" matches "J R R Tolkien"
> - **Pipeline consistency** - All processing layers now skip `needs_attention` books instead of wasting cycles

> **beta.114** - 🔐 **Secure API Key Registration** (Issue #117)
> - **Email-Only Delivery** - API keys no longer shown on screen, sent to email only
> - **Prevents Key Theft** - Someone who knows your email can't see your key
> - **Auto-Applied** - Key is still saved automatically, just not displayed

> **beta.113** - 🔑 **In-App Skaldleita Registration** (Issue #115)
> - **Register from Settings** - Get your API key directly in Library Manager
> - **Instance ID** - Unique `SKALD-XXXXXX` identifier for your installation
> - **Key Validation** - Verify your key works with one click
> - **Rate Limits** - 1000 req/hr with key, 500 without

> **beta.112** - ✅ **File Validation Module** (Issue #110)
> - **Pre-rename Checks** - Validates files before attempting renames
> - **Path Safety** - Checks for invalid characters, path length limits
> - **Better Errors** - Clear messages when files can't be renamed

> **beta.110** - 📊 **Enhanced Status Bar** (transparency for users)
> - **Know Your APIs** - Status bar shows exactly which API is processing your books
> - **FREE Badge** - Green badge shows when using free APIs (Skaldleita, Ollama) vs your quota
> - **Current Step** - See "Transcribing audio...", "Querying database...", "Verifying with AI..."
> - **Provider Icons** - Soundwave for Skaldleita, stars for Gemini, PC for Ollama
> - **Crash Fix** - Truncated author names like "James S. A" no longer crash `{author_last}` template

> **beta.109** - 🛡️ **AI Hallucination Prevention** (Issue #79)
> - **Generic Title Protection** - Titles like "Match Game", "The Game", "Home" no longer get fake authors
> - AI prompts now warn about ambiguous titles and require reasoning
> - Validation flags "generic title + no author" as low confidence
> - Better to return null than invent "Doc Raymond" for a Craig Alanson book

> **beta.108** - 🎯 **Author Format & Duplicate History Fix** (Issues #96, #88, #79)
> - **Author Name Templates** - New `{author_lf}` (LastName, FirstName), `{author_last}`, `{author_first}` for custom naming
> - **Database Cleanup Button** - Settings → Advanced now has button to remove @eaDir, #recycle entries
> - **Duplicate History Fix** - Centralized insert function prevents same book appearing 15x in history
> - All 16 INSERT paths now use deduplication helper - finally kills the duplicate bug

> **beta.107** - 🔧 **Series Path Fix** (Issue #94)
> - **Series Number Without Name** - Custom naming templates no longer create broken paths
> - Template `{author}/{series}/{series_num} - {title}` now falls back correctly when series is missing
> - Previously created paths like `Author/01 - Title`, now properly omits orphan numbers

> **beta.106** - 🧹 **Title Cleanup** (Issue #92)
> - **Strip "Unabridged" Toggle** - New option removes `(Unabridged)` from titles
> - **Garbage Prevention** - Validation rejects bad author/title suggestions before saving

> **beta.105** - 📚 **ISBN Lookup** (Issue #67)
> - **Ebook ISBN Extraction** - Extracts ISBN from EPUB, PDF, MOBI metadata for better matching
> - New BookDB endpoint for direct ISBN lookup

> **beta.104** - 🔧 **Synology @eaDir Fix** (Issue #88)
> - **Accurate Dashboard Counts** - Pending/fixed/error counts now match actual items
> - **No More Duplicate History** - Fixed entries no longer accumulate duplicates
> - **Request Tracking** - API requests now identify Library Manager version

> **beta.102** - 🎨 **UI Theming System & Bug Fixes** (Issue #86)
> - **Theme Selector** - Switch between Default and Skaldleita (Norse-inspired) themes
> - **Theme Persistence** - Theme no longer resets when navigating between pages
> - **Pyannote Fix** - No more "No module named 'pyannote'" warnings at startup
> - **Worker Crash Fix** - Queue processing no longer crashes on malformed AI responses

> **beta.101** - 🌍 **Multi-Language Audiobook Naming** (Issue #81)
> - **Three Naming Modes** - Native (keep original language), Preferred (translate all), Tagged (add language labels)
> - **Flexible Tagging** - Four formats `(Polish)`, `[pl]`, `Polish`, `_pl` + three positions (after/before title, subfolder)
> - **Custom Templates** - New `{language}` and `{lang_code}` tags for full control
> - **Polish Language Fix** - Strict language matching now works correctly for all 28 supported languages

> **beta.100** - 📊 **Dashboard Activity Log & Skaldleita IDs**
> - **Real-time Activity Log** - See processed books with full metadata on dashboard
> - **Skaldleita IDs** - Audio fingerprints and narrator IDs embedded in files
> - **Extended Metadata** - Enables instant identification when files are shared/moved

> **beta.99** - 👁️ **Live Status Bar** - See what's happening in real-time!
> - **Persistent Status Bar** - Always visible below navbar on every page
> - **Current Book Display** - Shows author/title of book being processed
> - **Layer Indicator** - See which processing stage is active (Audio, AI, API, Fallback)

> **beta.97** - 🔍 **Series Mismatch Detection & SearXNG Fallback** (Issues #76, #77)
> - **Series Mismatch Fix** - Books with series info now correctly reject wrong matches
> - **SearXNG Fallback** - New web search provider when APIs fail (Amazon, Audible, Goodreads parsing)
> - **Whisper Setting Fix** - Speech-to-Text model selection now saves correctly

> **beta.96** - 🐛 **Watch Folder Duplicates Fix** (Issue #76)
> - **Atomic Directory Move** - Prevents partial moves creating "Version B" folders
> - **Partial Move Detection** - Completes interrupted moves instead of duplicating

> **beta.95** - 🔧 **Major Code Refactoring**
> - **32% Code Reduction** - `app.py` reduced from 15,491 to 10,519 lines
> - **Modular Architecture** - New `library_manager/` package with organized modules

> **beta.94** - 🐛 **Bug Fixes** (Issues #64, #71, #74)
> - **Queue Hanging Fix** - Circuit breaker now properly advances queue when providers fail (#74)
> - **Community Toggle** - "Contribute to Community" setting now saves correctly (#71)
> - **Whisper Install** - Docker permission error fixed (#63)
> - **API Key Visibility** - Keys now shown in settings (hidden by default, eye toggle reveals)
> - **Apply All Fix** - History entries now store paths to prevent "Source no longer exists" errors
> - **Dashboard Counts** - Fixed inflated counts by excluding series folders from totals
> - **Title Cleaning** - Strips torrent naming junk (bitrates, timestamps, editor names, year prefixes)

> **beta.93** - 🌐 **P2P Cache & Resilience** (Issue #62)
> - **P2P Book Cache** - Optional decentralized cache shares BookDB results with other users
> - **Helps During Outages** - Get results from P2P network when BookDB is temporarily down
> - **Opt-in & Private** - Disabled by default, only metadata shared (no file paths)
> - **BookDB Retry Logic** - 5 retries with backoff when no fallback configured
> - **Data Validation** - Rejects malformed/malicious P2P cache entries

> **beta.92** - 🔒 **Security & Stability**
> - **Confidence Threshold** - Books only marked "verified" when confidence ≥40%, prevents false positives
> - **API Keys Hidden** - Keys no longer exposed in HTML source, shows "Key configured" instead
> - **Issue #59 Complete Fix** - Placeholder authors ("Unknown Author") now detected during scan
> - **Issue #63 Fix** - Docker Whisper install permission error resolved
> - **BookDB Stability** - Circuit breaker for rate limiting, improved multi-user fairness
> - **Layer 2 Recovery** - Stuck items now properly advanced when Layer 2 disabled

> **beta.92** - 🎧 **Audio-First Identification** (Major Feature)
> - **Revolutionary Approach** - Now identifies books from narrator introductions FIRST
> - **52% Identification Rate** - Half of books identified from audio alone in Layer 1
> - **4-Layer Pipeline** - Audio transcription → AI parsing → API enrichment → Folder fallback
> - **faster-whisper Integration** - Local, free speech-to-text via Python venv
> - **Known Narrator Detection** - Prevents AI from confusing narrators with authors

> **beta.90** - 🎯 **Layer 4 Content Analysis** (Major Feature)
> - **The Final Layer** - Transcribes actual story content to identify books when all else fails
> - **Whisper + OpenRouter Fallback** - Local transcription + free AI when Gemini unavailable
> - **No GPU Required** - faster-whisper runs on CPU, model downloads automatically

> **beta.89** - Watch Folder Reliability (Issue #57)
> - Track number stripping, local BookDB support, confidence threshold fix

> **beta.87-88** - Watch Folder Verification & Scan Locking (Issues #57, #59-61)
> - API result verification, parent folder hints, concurrent scan fix, password toggles

> **beta.84-86** - Status & Output Fixes (Issues #57, #59)
> - Placeholder author detection, output folder routing, author initials standardization

> **beta.78-83** - SQLite Locking, Setup Wizard, Orphan Organization
> - 3-phase processing, first-run wizard, duplicate detection fix

> **beta.72-77** - Multi-Edit, Media Filters, Author Initials
> - Edit all queue items, media type filter, "J R R Tolkien" → "J. R. R. Tolkien"

[Full Changelog](CHANGELOG.md)

---

## The Problem

Audiobook libraries get messy. Downloads leave you with:

```
Your Library (Before):
├── Shards of Earth/Adrian Tchaikovsky/        # Author/Title swapped!
├── Boyett/The Hollow Man/                     # Missing first name
├── Metro 2033/Dmitry Glukhovsky/              # Reversed structure
├── [bitsearch.to] Dean Koontz - Watchers/     # Junk in filename
├── The Great Gatsby Full Audiobook.m4b        # Loose file, no folder
└── Unknown/Mistborn Book 1/                   # No author at all
```

---

## The Solution

Library Manager combines **real book databases** (50M+ books) with **AI verification** to fix your library:

```
Your Library (After):
├── Adrian Tchaikovsky/Shards of Earth/
├── Steven Boyett/The Hollow Man/
├── Dmitry Glukhovsky/Metro 2033/
├── Dean Koontz/Watchers/
├── F. Scott Fitzgerald/The Great Gatsby/
└── Brandon Sanderson/Mistborn/1 - The Final Empire/
```

---

## Features

### Smart Path Analysis
- Works backwards from audio files to understand folder structure
- Database-backed author/series detection (50M+ books)
- Fuzzy matching ("Dark Tower" finds "The Dark Tower")
- AI fallback for ambiguous cases
- **Safe fallback** - connection failures don't cause misclassification

### 4-Layer Identification Pipeline (Audio-First)
```
Layer 1: Audio Transcription + AI Parsing (Most Reliable)
         Transcribes 45-second intro → AI extracts author/title/narrator
         ✓ 52% of books identified from audio alone

Layer 2: AI Audio Analysis (Deeper Analysis)
         Sends audio directly to Gemini for unclear transcripts

Layer 3: API Enrichment (Add Metadata)
         BookDB → Audnexus → OpenLibrary → Google Books → Hardcover

Layer 4: Folder Name Fallback (Last Resort)
         Uses folder structure when audio identification fails
         Works even when file has zero metadata or intro credits
```
Each layer only runs if the previous layer couldn't confidently identify the book.

### Safety First
- **Drastic changes require approval** - author swaps need manual review
- **Garbage match filtering** - rejects unrelated results (<30% similarity)
- **Undo any fix** - every rename can be reverted
- **Structure reversal detection** - catches Metro 2033/Author patterns
- **System folders ignored** - skips `metadata`, `cache`, `@eaDir`, etc.

### Series Grouping (Audiobookshelf-Compatible)
```
Brandon Sanderson/Mistborn/1 - The Final Empire/
Brandon Sanderson/Mistborn/2 - The Well of Ascension/
James S.A. Corey/The Expanse/1 - Leviathan Wakes/
```

### Custom Naming Templates
Build your own folder structure:
```
{author}/{title}                          → Brandon Sanderson/The Final Empire/
{author}/{series}/{series_num} - {title}  → Brandon Sanderson/Mistborn/1 - The Final Empire/
{author} - {title} ({narrator})           → Brandon Sanderson - The Final Empire (Kramer)/
{author}/{language}/{title}               → Dmitry Glukhovsky/Russian/Metro 2033/
{author}/{title} [{lang_code}]            → Antoine de Saint-Exupéry/Le Petit Prince [fr]/
```

### Language Support
- **28 languages** - German, French, Spanish, Italian, Portuguese, Dutch, Swedish, Norwegian, Danish, Finnish, Polish, Russian, Japanese, Chinese, Korean, Arabic, Hebrew, Hindi, Turkish, Czech, Hungarian, Greek, Thai, Vietnamese, Ukrainian, Romanian, Indonesian
- **Multi-language naming** - intelligent folder naming based on detected book language:
  - **Native mode** - Russian books get Russian titles, English books get English titles
  - **Preferred mode** - all books named in your preferred language
  - **Tagged mode** - preferred language + language tag ("Metro 2033 (Russian)")
- **Flexible tagging** - four formats `(Polish)`, `[pl]`, `Polish`, `_pl` + subfolder option
- **Preserve original titles** - keeps "Der Bücherdrache" instead of translating to English
- **Regional Audible search** - queries audible.de, audible.fr, etc. for localized results
- **Audio language detection** - use Gemini to detect spoken language in audiobooks

### Additional Features
- **Web dashboard** with dark theme
- **Watch folder mode** - monitor downloads folder, auto-organize new audiobooks
- **Manual book matching** - search 50M+ database directly
- **Edit & lock metadata** - correct wrong matches, lock to prevent overwriting
- **Library search** - find any book by author or title
- **Loose file detection** - auto-creates folders for dumped files
- **Ebook management (Beta)** - organize ebooks alongside audiobooks with ISBN lookup
- **Health scan** - detect corrupt/incomplete audio files
- **Audio analysis (Beta)** - extract metadata from audiobook intros via Gemini
- **In-browser updates** - update from the web UI
- **Backup & restore** - protect your configuration
- **Version-aware renaming** - different narrators get separate folders

---

## Quick Start

### Option 1: Docker (Recommended)

```bash
# Pull from GitHub Container Registry
docker run -d \
  --name library-manager \
  -p 5757:5757 \
  -v /path/to/audiobooks:/audiobooks \
  -v library-manager-data:/data \
  ghcr.io/deucebucket/library-manager:latest
```

Or with Docker Compose:

```yaml
version: '3.8'
services:
  library-manager:
    image: ghcr.io/deucebucket/library-manager:latest
    container_name: library-manager
    ports:
      - "5757:5757"
    volumes:
      - /your/audiobooks:/audiobooks
      - library-manager-data:/data
    restart: unless-stopped

volumes:
  library-manager-data:
```

### Option 2: Direct Install

```bash
git clone https://github.com/deucebucket/library-manager.git
cd library-manager
pip install -r requirements.txt
python app.py
```

### Configure

1. Open **http://localhost:5757**
2. Go to **Settings**
3. Add library path (`/audiobooks` for Docker, or your actual path)
4. Add AI API key (Gemini recommended - 14,400 free calls/day)
5. **Save** and **Scan Library**

---

## Docker Installation

### Volume Mounts

Docker containers are isolated. Mount your audiobook folder:

```yaml
volumes:
  - /your/audiobooks:/audiobooks  # LEFT = host, RIGHT = container
  - library-manager-data:/data    # Persistent config/database
```

Use `/audiobooks` (container path) in Settings.

### Platform Examples

| Platform | Volume Mount |
|----------|-------------|
| **UnRaid** | `/mnt/user/media/audiobooks:/audiobooks` |
| **Synology** | `/volume1/media/audiobooks:/audiobooks` |
| **Linux** | `/home/user/audiobooks:/audiobooks` |
| **Windows** | `C:/Users/Name/Audiobooks:/audiobooks` |

See [docs/DOCKER.md](docs/DOCKER.md) for detailed setup guides.

---

## Configuration

### Key Settings

| Option | Default | Description |
|--------|---------|-------------|
| `library_paths` | `[]` | Folders to scan |
| `naming_format` | `author/title` | Folder structure |
| `series_grouping` | `false` | Audiobookshelf-style series folders |
| `auto_fix` | `false` | Auto-apply vs manual approval |
| `protect_author_changes` | `true` | Require approval for author swaps |
| `scan_interval_hours` | `6` | Auto-scan frequency |

### AI Providers

**Google Gemini** (Recommended)
- 14,400 free API calls/day
- Get key at [aistudio.google.com](https://aistudio.google.com)

**OpenRouter**
- Multiple model options
- Free tier available

**Ollama**
- Self-hosted with live model discovery from the user's server
- No hardcoded model requirement

**llama.cpp / OpenAI-compatible**
- Works with llama.cpp, LM Studio, vLLM, LocalAI, and compatible `/v1` APIs
- Live model discovery and optional API-key authentication

---

## API Reference

| Endpoint | Method | Description |
|----------|--------|-------------|
| `/api/scan` | POST | Trigger library scan |
| `/api/deep_rescan` | POST | Re-verify all books |
| `/api/process` | POST | Process queue items |
| `/api/queue` | GET | Get queue |
| `/api/library` | GET | Get library with filters |
| `/api/stats` | GET | Dashboard stats |
| `/api/apply_fix/{id}` | POST | Apply pending fix |
| `/api/reject_fix/{id}` | POST | Reject suggestion |
| `/api/undo/{id}` | POST | Revert applied fix |
| `/api/edit_book` | POST | Edit & lock book metadata |
| `/api/unlock_book/{id}` | POST | Unlock book for reprocessing |
| `/api/analyze_path` | POST | Test path analysis |

---

## Troubleshooting

**Wrong author detected?**
→ Go to Pending → Click Reject (✗)

**Want to undo a fix?**
→ Go to History → Click Undo (↩)

**Series not detected?**
→ Enable Series Grouping in Settings → General

**Docker can't see files?**
→ Check volume mounts in docker-compose.yml

---

## Development

### Run Tests

```bash
# Full integration test suite (pulls from ghcr.io)
./test-env/run-integration-tests.sh

# Build from local source instead
./test-env/run-integration-tests.sh --local

# Rebuild 2GB test library first
./test-env/run-integration-tests.sh --rebuild
```

### Local Development

```bash
python app.py  # Runs on http://localhost:5757
```

---

## Testing

We take testing seriously. Every release is validated against real-world chaos scenarios.

### Chaos Library Testing

Before every release, we test against a **500-book "chaos library"** - a nightmare collection designed to break the app:

| Chaos Type | Example | What We're Testing |
|------------|---------|-------------------|
| **Wrong Author** | `Stephen King - The Martian` | Can we detect misattribution? |
| **Narrator as Author** | `Ray Porter - Project Hail Mary` | Common audiobook mistake |
| **Swapped Fields** | `The Final Empire - Brandon Sanderson` | Structure reversal detection |
| **Foreign Characters** | `Nick Offerman - 罪と罰` | Unicode handling |
| **Heavy Typos** | `Nil Gaiman - Annsi Boys` | Fuzzy matching resilience |
| **Torrent Prefixes** | `[MAM] Dean Koontz - Watchers (2021)` | Junk stripping |
| **Missing Info** | `Audiobook_574` | Identification from nothing |
| **Wrong Series Number** | `Mistborn Book 15 - The Final Empire` | Series validation |
| **Mixed Languages** | `Харуки Мураками - Dune` | Cross-language chaos |

The chaos library uses **symlinks to real audiobook files** (166GB represented, ~0 disk usage), so we're testing with actual audio content - not just filename patterns.

### Regression Testing

**Every GitHub issue becomes a test case.** When users report bugs, we:

1. **Reproduce** the exact scenario
2. **Fix** the underlying issue
3. **Add a test** that catches this specific case
4. **Run tests before every commit** to ensure we never revert fixes

Our test suite (`test-env/test-naming-issues.py`) currently validates **184+ edge cases** derived from real user issues:

```bash
# Run naming/path edge case tests
python test-env/test-naming-issues.py

# Example output:
# --- Issue #57: Watch folder verification ---
# [PASS] Watch folder verifies drastic author changes
# [PASS] Watch folder detects same-title-different-author
# --- Issue #60: Password visibility toggles ---
# [PASS] templates/settings.html has togglePasswordVisibility
# ...
# RESULTS: 184 passed, 0 failed
```

### Pre-Push Verification

Before pushing any changes, we run:

1. **Syntax check** - `python -m py_compile app.py`
2. **Regression tests** - All 184+ edge cases
3. **Code review** - Adversarial review of changes
4. **Security audit** - Check for common vulnerabilities
5. **Chaos library scan** - Full 500-book identification test

---

## Credits & Acknowledgments

This project wouldn't be what it is without the community. Special thanks to:

### @Merijeek
The idea for **Skaldleita** (audio fingerprinting + narrator voice identification) came from Merijeek's suggestion in Issue #72 about MAM hashing. His vision of "Shazam for audiobooks" became the foundation for Skaldleita - instant audiobook identification via voice fingerprints. Beyond that, his thorough testing on the `:develop` branch has caught countless edge cases and made Library Manager far more robust. His blunt feedback pushes the project to be better.

### Community Testers
- **Dennis** - Remote Pi testing, ARM/low-resource environment validation
- **WickedT53** - BookDB stability testing, Unraid platform support
- **greggh** - UI bug reports, Docker testing
- **freitagdavid** - Code quality feedback

### Open Source Projects
- **Chromaprint/fpcalc** - Audio fingerprinting technology
- **faster-whisper** - Speech-to-text transcription
- **WeSpeaker** - Voice embedding models for narrator identification

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## Contributing

Pull requests welcome! Ideas:
- [x] Ollama and generic local LLM support
- [ ] Cover art fetching
- [x] Metadata embedding (added in v0.9.0-beta.20)
- [ ] Movie/music library support

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## Support & Contact

- **Issues/Bugs:** [GitHub Issues](https://github.com/deucebucket/library-manager/issues)
- **Email:** hello@deucebucket.com

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## License

MIT License - See [LICENSE](LICENSE) for details.

**What this means:**
- Free to use, modify, distribute, sublicense, and sell
- Private and commercial modifications are permitted
- The copyright and license notice must be retained

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