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repo for storing the second brain project
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Travis Herbranson 3d6bd6385f Merge branch 'claude/laughing-shirley-52f4a6': add-form + wrap-fix + transcript segments + playlist fan-out 
The four follow-up commits since the last merge:

- web: dashboard "Add to queue" form with HTMX save. Service-layer
  add_source extracted so the CLI and the new POST share validation,
  dedupe, and source_type detection — no behaviour drift.

- web: source-list cards drop `truncate` in favour of break-words /
  break-all so long titles + long URLs wrap and the card grows. Status
  / domain / timestamp badges stay aligned via min-w-0 + flex-1 on the
  left column.

- transcripts: v4 migration adds sources.transcript_segments JSONB.
  Tower worker now persists faster-whisper's segment-level output
  (start/end/text + word_timestamps when available) into the new
  column alongside transcript_text (which stays canonical for the
  extractor). Best-effort: a malformed JSONB write doesn't abort the
  status=TRANSCRIBED commit.

- playlists: queue-time YouTube playlist fan-out. is_youtube_playlist_url
  strictly matches /playlist?list=… on a known YouTube host (a
  watch?v=…&list=… URL stays a single-add, documented choice). yt-dlp
  extract_flat enumerates entries; add_playlist loops them through
  add_source so the existing UNIQUE dedupe path handles repeats. CLI
  and web both auto-detect — no flag needed. Default ceiling 50
  entries.
2026-05-25 14:04:45 -04:00
alembic transcripts: capture segment-level output into a new JSONB column 2026-05-25 13:40:49 -04:00
config postgres migration: schema, models, embeddings, alembic 2026-05-24 22:46:48 -04:00
deploy deploy/web: containerized FastAPI UI on the homelab docker network 2026-05-25 11:48:37 -04:00
prompts project init 2026-05-22 19:08:22 -04:00
reviews docs: update CLAUDE.md + migration plan to reflect shipped Postgres design 2026-05-24 22:57:31 -04:00
src/second_brain playlists: queue-time YouTube fan-out via yt-dlp extract_flat 2026-05-25 13:59:35 -04:00
tests playlists: queue-time YouTube fan-out via yt-dlp extract_flat 2026-05-25 13:59:35 -04:00
.gitignore add .gitignore 2026-05-24 21:10:53 -04:00
alembic.ini postgres migration: schema, models, embeddings, alembic 2026-05-24 22:46:48 -04:00
CLAUDE.md docs: update CLAUDE.md + migration plan to reflect shipped Postgres design 2026-05-24 22:57:31 -04:00
postgres-migration-planning.md docs: update CLAUDE.md + migration plan to reflect shipped Postgres design 2026-05-24 22:57:31 -04:00
pyproject.toml pipeline split: tower transcribe worker + claim queue + faster-whisper 2026-05-25 10:11:37 -04:00
README.md updates to project files 2026-05-24 22:23:59 -04:00
uv.lock pipeline split: tower transcribe worker + claim queue + faster-whisper 2026-05-25 10:11:37 -04:00

README.md

second-brain

A personal knowledge system built on a video/article extraction pipeline and an LLM-maintained wiki (inspired by the Karpathy LLM Wiki pattern).

What it does

  1. Pull — download YouTube videos or fetch web articles
  2. Transcribe — extract transcripts via Whisper (videos) or trafilatura (articles)
  3. Extract — single-shot Claude call produces structured notes per source
  4. Review — web UI to accept or reject extractions
  5. Compile — wiki compiler folds accepted extractions into a living Obsidian vault

Quick start

# Install dependencies
uv sync

# Copy and edit config
cp config/settings.toml config/settings.local.toml

# Queue a source
uv run second-brain add https://www.youtube.com/watch?v=...

# Run the pipeline
uv run second-brain process

# Review in the web UI
uv run second-brain serve

# Compile to wiki
uv run second-brain compile

Domains

Extractions are tagged by domain so the right prompt template is used:

Domain Focus
development Software, programming, systems
content Content creation, video production
business Entrepreneurship, marketing, ops
homelab Self-hosted infra, networking, DevOps

Extractor backends

Two backends, selectable via [extractor].backend in config/settings.toml:

  • cli (default) — shells out to claude -p --output-format json --json-schema .... Runs under your Max OAuth subscription, no per-token billing. The wrapper spawns the CLI in a throwaway tempfile.TemporaryDirectory and strips ANTHROPIC_API_KEY / ANTHROPIC_AUTH_TOKEN from the env so host CLAUDE.md, hooks, and settings don't leak in, and the subscription is used instead of the API key.
  • api — uses the anthropic Python SDK, requires ANTHROPIC_API_KEY. Install with uv sync --extra api (the SDK is an optional dependency).

Requirements

  • Python 3.12+
  • Either the claude CLI on PATH (default backend) or ANTHROPIC_API_KEY (api backend)
  • ffmpeg (for Whisper audio extraction)

In-flight work

  • Postgres + pgvector migration — SQLite is the current backing store but the project is moving to Travis's Postgres instance. Planning questions live in postgres-migration-planning.md; nothing has been migrated yet.