The dropdown was in the HTML all along and still could not be seen. Three separate causes, found by measuring the rendered element rather than trusting that the markup existed: 1. Clipped off-screen. The h1 is a flex row with no wrap. Measured at an 800px viewport: the language span started at x=620 and ended at x=810, past the viewport edge, so only its first few pixels were painted. The project badge alone took 309px. Adding flex-shrink and truncating the badge did not fix it - there is genuinely no room in that row. The selector now gets its own bar directly under the header, and the project name ellipsises. Verified visible: x=181, right=341 in an 800px viewport, 34px tall. 2. Empty on every other page. base.html rendered the select from a `languages` variable that almost no page supplies, so the login page and the rest of the app showed a 38px-wide dropdown with zero options - effectively invisible, and a dead control. Pages now opt in by overriding a header_bar block. Verified /, /speakers, /chapters-audio and /login all still render. 3. Browser cache made my own screenshot lie. It showed a stale Japanese string containing the word "decisiveness" that is in no file on disk. A cache-busted fetch confirmed the server is clean. Worth remembering: a screenshot taken through a warm cache is not evidence. The screenshot also exposed a data bug. All 12 sample utterances carried type "narration" - including Kainda, Duchess Victoria, Deal Hunter, Nanny and Trader Romano, who are all speaking. Every row rendered a narration badge and the file told UmbraTrans that six characters were not speaking. SHAPE in build_sample_translations.py now marks 6 dialogue / 6 narration, and the generated JSONs are regenerated to match. Also removed a misleading issue. It reported "12 rendered clips have no staleness marker" as a translation problem; the markers are absent because render_lang_test.py does not write them, so it was sending the reader after a defect that does not exist. Replaced with the honest one: only 12 of 4,319 translated and none confirmed - sample only, not publishable. Suite: 721 passed, 8 pre-existing. ruff clean on changed regions.
UmbraAudio
Quality-first multi-pass audiobook generation from English manuscripts.
Features
- 5-pass pipeline: Analysis → Voice Design → Mapping → Test → Generate
- Multi-engine TTS: Chatterbox (primary), Qwen3-TTS (secondary)
- LLM-enhanced: BookNLP for NLP, LLM for profiling/emotion/pronunciation
- Web review: FastAPI + HTMX at checkpoints for human approval
Quick Start
python -m umbraaudio.cli init <manuscript.epub> --name 'My Book'
python -m umbraaudio.cli analyze
python -m umbraaudio.cli voices
python -m umbraaudio.cli review
Requirements
- Python 3.11+
- NVIDIA GPU with CUDA support (RTX 3060 or better recommended)
- ffmpeg
Development
pip install -e ".[dev]"
ruff check umbraaudio/
pytest tests/ -v
Commit cadence: commit at least once every Sunday. Never leave a week (let alone a month) of work uncommitted — a single accidental
git checkouton 2026-09-20 wiped out a month of changes toumbraaudio/web/routes.py. SeeAGENTS.md→ Commit Cadence.
scripts/commit_check.sh enforces the nudge: it exits non-zero once the tree has been dirty
longer than a week. The LaunchAgent com.umbraaudio.commitcheck runs it every Sunday at
18:00 and posts a macOS notification when there is uncommitted work.
scripts/commit_check.sh # warn if dirty > 7 days
scripts/commit_check.sh --days 3 # tighter threshold
scripts/commit_check.sh --any # warn on any uncommitted change
Rebuilding from source
The repo tracks source only; large runtime data is reconstructed as needed.
-
Models: weights are not committed (see
.gitignore). Download them:bash scripts/download_models.sh # ~9 GB, targets ./models -
Qwen3-TTS is a git submodule pinned to upstream commit
022e286:git submodule update --init --recursiveThe
tts_server/web-demo backend includes a local UI customization toqwen_tts/cli/demo.py. It is preserved as a patch — reapply it after checking out the submodule:cd Qwen3-TTS && git apply ../scripts/qwen3_tts_demo_umbra_patch.patch -
Environment: copy/keep
.env(contains secrets) and setUMBRA_TTS__*model paths undermodels/.
Book projects (e.g. DealHunterShip_...) are committed separately under their
own project directories and are not part of this program repository.