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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Commands
+
+**Build and run (Docker):**
+```bash
+cp .env.example .env   # first time only
+docker compose up -d --build
+```
+UI available at `http://127.0.0.1:8094/`
+
+**Run locally without Docker:**
+```bash
+pip install -r requirements.txt
+API_BASE=http://... OLLAMA_BASE_URL=http://... DB_PATH=./ui.db uvicorn app:app --host 0.0.0.0 --port 8094 --reload
+```
+
+**Publish container:**
+```bash
+docker build -t registry.aquantico.lan/claw/diarization-ui:latest .
+docker push registry.aquantico.lan/claw/diarization-ui:latest
+```
+
+There are no tests and no linter configured.
+
+## Architecture
+
+The entire application lives in a single file: `app.py` (~1550 lines). There are no templates, no separate frontend build, and no additional modules.
+
+### Request handling
+All routes are FastAPI endpoints. HTML is returned as server-rendered Python f-strings using Bootstrap 5.3 (CDN) for layout. Inline `<script>` blocks handle client-side interactivity. The `layout()` function wraps every page with the sidebar navigation, topbar, shared CSS, and the global modal/JS helpers (`window.showModal`, `window.uiPrompt`, `window.uiConfirm`, `window.uiSelect`).
+
+### Data model (SQLite)
+The DB is a single SQLite file at `DB_PATH` (default `/data/ui.db`). Four tables:
+- **projects** — named groupings for documents
+- **prompts** — reusable LLM prompt templates
+- **documents** — stored content; `kind` is either `transcript` (raw transcription output) or `analysis` (LLM result). An analysis document links back to its source via `source_document_id` and `prompt_id`.
+- **jobs** — background task queue; `kind` is `upload` or `analysis`; `status` cycles through `queued → running → done|error|cancelled`.
+
+Schema migrations are handled inline in `init_db()` with `ALTER TABLE … ADD COLUMN` wrapped in `try/except`.
+
+### Background job processing
+Jobs are processed by a `ThreadPoolExecutor(max_workers=2)`. `enqueue_job()` inserts a row and submits the worker function. Workers check for `cancelled` status at each checkpoint before making external calls.
+
+- **upload job** (`_process_upload_job`): POSTs the audio file to `{API_BASE}/transcribe-diarize`, stores `formatted_text` from the response as a `transcript` document.
+- **analysis job** (`_process_analysis_job`): POSTs to Ollama's `/api/generate` with the transcript content and selected prompt, stores the response as an `analysis` document.
+
+The jobs page auto-polls `/jobs/data` every 3 s when active jobs exist, 10 s otherwise.
+
+### External dependencies
+- **`API_BASE`** — the `transcribe-diarize` service (audio → transcript JSON with `formatted_text`)
+- **`OLLAMA_BASE_URL` / `OLLAMA_MODEL`** — Ollama instance for LLM analysis (default model `qwen3.5:9b`)
+
+### PWA
+The app serves `/manifest.webmanifest`, `/icon.svg`, and `/sw.js` directly from route handlers to support installable PWA on mobile.