Audible Premium Plus

Build me a focused music services and creator audio tools workflow for the personal core of Audible Premium Plus. Requirements:

- Use Python 3.12, FastAPI, SQLite, ffmpeg, and a local web interface. Model owned books, files, chapters, bookmarks, playback positions, and reading progress.
- Paid product context: Organize and play legally owned audiobooks with bookmarks and local sync. Build only this DIY scope: Organize legally owned audiobooks, play them with bookmarks, sync listening progress locally, and keep the library in a private user-owned store.
- For music services and creator audio tools, import legally owned books or audio files and index chapters without changing the originals.
- Provide playback or reading with per-file position, chapter navigation, and bookmarks.
- Export the library manifest and progress so the user can restore them locally.
- Use a local web page with input, progress, review, and export views. Required input or access: legally owned local audio files; ffmpeg.
- Recovery: A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position.
- Acceptance: with one labelled sample, show the input, saved intermediate state, and exported result; verify this invariant: A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position.
- Out of scope: licensed audiobook catalog, credits, publisher relationships, narration rights, and apps; licensed music catalog. Keep this a personal, inspectable workflow.
- Include a README with setup, a sample input, required keys or permissions, data location, and the supported scope.

# AGENTS.md — Build guide for Audible Premium Plus

## Project scope
Organize legally owned audiobooks, play them with bookmarks, sync listening progress locally, and keep the library in a private user-owned store.

Catalogue verdict: no. A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Audible Premium Plus, organize and play legally owned audiobooks with bookmarks and local sync. The hard boundary is licensed audiobook catalog, credits, publisher relationships, narration rights, and apps, plus licensed content, rights, and distribution network.
Use the implementation prompt below to define the deliverable. Complete each phase's acceptance checks before extending the scope.

## Working agreement
- Inspect the repository and its existing instructions before choosing paths, dependencies or commands. Keep one coherent stack and explain changes to the proposed architecture.
- Plan a vertical slice that accepts a real input and produces the useful output described below. Persist only the state the prompt calls for; respect memory-only and upstream-managed workflows. Use fixtures only when they are clearly labelled.
- After scaffolding, document the actual install, development, check and build commands in README and keep them synchronized with the package or project manifest. Do not report commands as successful unless they ran.
- Work in small steps. At handoff, list implemented flows, checks actually performed, remaining blockers, and any credentials or provider setup the owner must supply.
- Do not publish, spend money, contact customers, delete source data or run irreversible migrations without the project owner's authorization.

## Prerequisites
- legally owned local audio files
- ffmpeg
- local storage
- optional audio-analysis models

## Stack and architecture
- Use Python 3.12, FastAPI, SQLite, ffmpeg, and a local web interface.
- Model owned books, files, chapters, bookmarks, playback positions, and reading progress.
- Interface for this music services and creator audio tools workflow: a local web page with input, progress, review, and export views.

## Security and data integrity
- A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position.
- Validate imported records and file paths; keep user data within the storage location named in the prompt.
- State the practical limit: licensed audiobook catalog, credits, publisher relationships, narration rights, and apps.

## Agent implementation rules
- Project rule, data: Model owned books, files, chapters, bookmarks, playback positions, and reading progress.
- Project rule, behavior: For music services and creator audio tools, import legally owned books or audio files and index chapters without changing the originals.
- Project rule, recovery: A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position.

## Optional agent skills and references
No installable skill is listed for this guide; use the project rules and the stack documentation.

Read the linked SKILL.md and its dependencies before adding a skill. Select only the skills matching this project's runtime and task; their documentation does not supply API access, credentials or approval to perform external actions. Pin the reviewed revision where the tool supports it. Follow the chosen agent's documented project-level installation mechanism.

## Distribution ideas
These are optional planning notes. Obtain the owner's approval before publishing or contacting anyone.
- Demonstrate this music services and creator audio tools operation with sample or user-owned data: For music services and creator audio tools, import legally owned books or audio files and index chapters without changing the originals.
- Show a concrete result or export: Export the library manifest and progress so the user can restore them locally.
- State the practical limit: licensed audiobook catalog, credits, publisher relationships, narration rights, and apps.

## Engineering roadmap
1. Phase 1, architecture and data: Use Python 3.12, FastAPI, SQLite, ffmpeg, and a local web interface. Model owned books, files, chapters, bookmarks, playback positions, and reading progress.
2. Phase 2, implement: For music services and creator audio tools, import legally owned books or audio files and index chapters without changing the originals.
3. Phase 3, implement: Provide playback or reading with per-file position, chapter navigation, and bookmarks.
4. Phase 4, review and output: Export the library manifest and progress so the user can restore them locally.
5. Phase 5, recovery and acceptance: Verify this invariant with a saved fixture: A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position. State the practical limit: licensed audiobook catalog, credits, publisher relationships, narration rights, and apps.

## Paid-product capabilities outside this build
- licensed audiobook catalog, credits, publisher relationships, narration rights, and apps
- licensed music catalog
- royalty and distribution relationships
- global streaming infrastructure
- artist network and recommendations

## Implementation prompt
Build me a focused music services and creator audio tools workflow for the personal core of Audible Premium Plus. Requirements:

- Use Python 3.12, FastAPI, SQLite, ffmpeg, and a local web interface. Model owned books, files, chapters, bookmarks, playback positions, and reading progress.
- Paid product context: Organize and play legally owned audiobooks with bookmarks and local sync. Build only this DIY scope: Organize legally owned audiobooks, play them with bookmarks, sync listening progress locally, and keep the library in a private user-owned store.
- For music services and creator audio tools, import legally owned books or audio files and index chapters without changing the originals.
- Provide playback or reading with per-file position, chapter navigation, and bookmarks.
- Export the library manifest and progress so the user can restore them locally.
- Use a local web page with input, progress, review, and export views. Required input or access: legally owned local audio files; ffmpeg.
- Recovery: A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position.
- Acceptance: with one labelled sample, show the input, saved intermediate state, and exported result; verify this invariant: A moved or unreadable book keeps its bookmark and error state; reopening restores the exact chapter and position.
- Out of scope: licensed audiobook catalog, credits, publisher relationships, narration rights, and apps; licensed music catalog. Keep this a personal, inspectable workflow.
- Include a README with setup, a sample input, required keys or permissions, data location, and the supported scope.

## Completion evidence
Demonstrate the prompt's acceptance scenarios against the scoped workflow. Include setup from a clean checkout and failure recovery. Check persistence across restart and export/restore only for the state the prompt says to store; for memory-only tools, confirm that temporary content is discarded as specified. Record actual results and remaining limitations. A detailed plan alone does not establish a working replacement.