Small joys: Quote of the Day + Word of the Day engines

- quote.py: curated public-domain quote pool (16 seeded, admin-grows), deterministic daily
  pick, lazy AI "what it means" explainer of the real quote (cached). No LLM-invented quotes.
- wotd.py: LLM proposes positive words → validated/enriched against dictionaryapi.dev (real
  definition, IPA, examples, audio) → audio clip cached to our origin (TTS fallback) →
  deterministic daily pick. Tops the pool up toward 30/day.
- db.py: quote_pool/daily_quote + wotd_pool/daily_wotd tables.
- api.py: /api/quote/today, /api/word/today, /api/word/audio/{word} (GET+HEAD).
- cli.py: cycle steps for both (under --no-joys), shared LLM client.
- tests: test_quote.py (6) + test_wotd.py (5). 393 backend tests green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

goodnews/db.py

@@ -304,6 +304,55 @@ CREATE TABLE IF NOT EXISTS daily_onthisday (
     created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 
+-- Quote of the Day: curated public-domain quotes; one picked per day. `meaning` is an
+-- AI explainer of the (real) quote, filled lazily the first time it's shown.
+CREATE TABLE IF NOT EXISTS quote_pool (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    source TEXT NOT NULL DEFAULT 'curated',
+    ckey TEXT NOT NULL UNIQUE,
+    text TEXT NOT NULL,
+    author TEXT,
+    work TEXT,
+    year TEXT,
+    meaning TEXT,
+    shown_at TEXT,
+    blocked INTEGER NOT NULL DEFAULT 0,
+    featured INTEGER NOT NULL DEFAULT 0,
+    added_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+CREATE TABLE IF NOT EXISTS daily_quote (
+    feature_date TEXT PRIMARY KEY,
+    pool_id INTEGER NOT NULL,
+    source TEXT NOT NULL DEFAULT 'curated',
+    text TEXT, author TEXT, work TEXT, year TEXT, meaning TEXT,
+    created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Word of the Day: LLM-proposed positive words, validated/enriched against a real
+-- dictionary (definition, IPA, examples, cached audio clip); one picked per day.
+CREATE TABLE IF NOT EXISTS wotd_pool (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    source TEXT NOT NULL DEFAULT 'llm',
+    word TEXT NOT NULL UNIQUE,
+    part_of_speech TEXT,
+    phonetic TEXT,                 -- IPA
+    audio_file TEXT,              -- our cached pronunciation clip (or null → browser TTS)
+    audio_url TEXT,              -- source clip URL
+    definition TEXT NOT NULL,
+    examples TEXT,               -- JSON array of example sentences
+    shown_at TEXT,
+    blocked INTEGER NOT NULL DEFAULT 0,
+    featured INTEGER NOT NULL DEFAULT 0,
+    added_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+CREATE TABLE IF NOT EXISTS daily_wotd (
+    feature_date TEXT PRIMARY KEY,
+    pool_id INTEGER NOT NULL,
+    word TEXT, part_of_speech TEXT, phonetic TEXT, audio_file TEXT,
+    definition TEXT, examples TEXT,
+    created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
 -- Privacy-respecting, first-party analytics. NO IP / user-agent / referrer / raw
 -- URL. visitor_hash is a hash of a random localStorage token (never email/IP).
 -- The UNIQUE key dedups to one row per (kind, article, visitor, day) — that both