-- Reference schema from the live database; FTS shadow tables are SQLite-managed.
CREATE INDEX assessment_status_hash ON document_assessments(status,content_hash);

CREATE INDEX chunks_document ON chunks(document_id);

CREATE INDEX document_topics_topic ON document_topics(topic,document_id);

CREATE INDEX documents_adapter ON documents(json_extract(metadata,'$.adapter'));

CREATE INDEX documents_assessment_match ON documents(id,sha256,quality);

CREATE INDEX documents_content_hash_kind ON documents(sha256,kind);

CREATE INDEX documents_host ON documents(host);

CREATE INDEX documents_kind ON documents(kind,state);

CREATE INDEX edges_target_source ON edges(target_url,source_url);

CREATE INDEX frontier_host ON frontier(host);

CREATE INDEX frontier_status ON frontier(status,next_attempt);

CREATE INDEX host_topics_topic ON host_topics(topic,host);

CREATE TABLE archived_files(path TEXT PRIMARY KEY,sha256 TEXT NOT NULL REFERENCES raw_blobs(sha256),size INTEGER NOT NULL,mtime_ns INTEGER NOT NULL,role TEXT NOT NULL);

CREATE TABLE catalog_records(source TEXT NOT NULL,record_id TEXT NOT NULL,slug TEXT NOT NULL,fields TEXT NOT NULL,raw_sha256 TEXT NOT NULL,fetched_at TEXT NOT NULL,PRIMARY KEY(source,record_id));

CREATE TABLE chunks(id INTEGER PRIMARY KEY,document_id TEXT NOT NULL REFERENCES documents(id) ON DELETE CASCADE,ordinal INTEGER NOT NULL,text TEXT NOT NULL);

CREATE VIRTUAL TABLE chunks_fts USING fts5(title,text,tokenize='unicode61');

CREATE TABLE 'chunks_fts_config'(k PRIMARY KEY, v) WITHOUT ROWID;

CREATE TABLE 'chunks_fts_content'(id INTEGER PRIMARY KEY, c0, c1);

CREATE TABLE 'chunks_fts_data'(id INTEGER PRIMARY KEY, block BLOB);

CREATE TABLE 'chunks_fts_docsize'(id INTEGER PRIMARY KEY, sz BLOB);

CREATE TABLE 'chunks_fts_idx'(segid, term, pgno, PRIMARY KEY(segid, term)) WITHOUT ROWID;

CREATE TABLE directory_partition_records(category TEXT,record_id TEXT,PRIMARY KEY(category,record_id));

CREATE TABLE directory_partitions(category TEXT PRIMARY KEY,page INTEGER NOT NULL DEFAULT 1,expected INTEGER NOT NULL DEFAULT 0,status TEXT NOT NULL DEFAULT 'pending',updated_at TEXT);

CREATE TABLE document_assessments(document_id TEXT PRIMARY KEY REFERENCES documents(id),body_sha256 TEXT NOT NULL,content_hash TEXT NOT NULL,status TEXT NOT NULL,reasons TEXT NOT NULL,version INTEGER NOT NULL,assessed_at TEXT NOT NULL);

CREATE TABLE document_topics(document_id TEXT NOT NULL REFERENCES documents(id),topic TEXT NOT NULL,evidence TEXT NOT NULL,PRIMARY KEY(document_id,topic));

CREATE TABLE document_versions(version_id INTEGER PRIMARY KEY,document_id TEXT NOT NULL,snapshot TEXT NOT NULL,archived_at TEXT NOT NULL);

CREATE TABLE documents(id TEXT PRIMARY KEY,url TEXT UNIQUE NOT NULL,title TEXT NOT NULL,kind TEXT NOT NULL,host TEXT NOT NULL,trust TEXT NOT NULL,state TEXT DEFAULT '',category TEXT DEFAULT '',body TEXT NOT NULL,metadata TEXT NOT NULL,fetched_at TEXT NOT NULL,sha256 TEXT NOT NULL,quality TEXT NOT NULL);

CREATE TABLE edges(source_url TEXT,target_url TEXT,relation TEXT,PRIMARY KEY(source_url,target_url,relation));

CREATE TABLE events(id INTEGER PRIMARY KEY,source TEXT,status TEXT,detail TEXT,created_at TEXT);

CREATE TABLE exa_attempts(
 url TEXT NOT NULL, mode TEXT NOT NULL, request_id TEXT NOT NULL,
 PRIMARY KEY(url,mode));

CREATE TABLE exa_requests(
 id TEXT PRIMARY KEY, created_at TEXT NOT NULL, urls TEXT NOT NULL,
 reserved_usd REAL NOT NULL, actual_usd REAL, status TEXT NOT NULL,
 raw_sha256 TEXT, detail TEXT);

CREATE TABLE exa_urls(
 url TEXT PRIMARY KEY, request_id TEXT NOT NULL, status TEXT NOT NULL,
 detail TEXT, updated_at TEXT NOT NULL);

CREATE TABLE fetch_receipts(url TEXT PRIMARY KEY,final_url TEXT NOT NULL,raw_sha256 TEXT NOT NULL,content_type TEXT,fetched_at TEXT NOT NULL);

CREATE TABLE frontier(url TEXT PRIMARY KEY,host TEXT NOT NULL,discovered_from TEXT,depth INTEGER NOT NULL DEFAULT 0,status TEXT NOT NULL DEFAULT 'pending',attempts INTEGER NOT NULL DEFAULT 0,next_attempt REAL DEFAULT 0,last_error TEXT,updated_at TEXT);

CREATE TABLE host_crawl_state(host TEXT PRIMARY KEY,last_attempt TEXT NOT NULL,attempts INTEGER NOT NULL DEFAULT 0);

CREATE TABLE host_topics(host TEXT NOT NULL,topic TEXT NOT NULL,evidence_url TEXT NOT NULL,PRIMARY KEY(host,topic));

CREATE TABLE jobs(name TEXT PRIMARY KEY,status TEXT,expected INTEGER DEFAULT 0,completed INTEGER DEFAULT 0,errors INTEGER DEFAULT 0,detail TEXT,updated_at TEXT);

CREATE TABLE ocr_pages(raw_sha256 TEXT,page INTEGER,language TEXT,text TEXT,confidence REAL,method TEXT,processed_at TEXT,PRIMARY KEY(raw_sha256,page,language));

CREATE TABLE raw_blobs(sha256 TEXT PRIMARY KEY,codec TEXT NOT NULL,raw_size INTEGER NOT NULL,payload BLOB NOT NULL,archived_at REAL NOT NULL);

CREATE TABLE settings(name TEXT PRIMARY KEY,value TEXT NOT NULL);

CREATE TABLE sitemap_frontier(url TEXT PRIMARY KEY,discovered_from TEXT,raw_sha256 TEXT,position INTEGER NOT NULL DEFAULT 0,status TEXT NOT NULL DEFAULT 'pending',attempts INTEGER NOT NULL DEFAULT 0,next_attempt REAL NOT NULL DEFAULT 0,last_error TEXT,updated_at TEXT);

CREATE TABLE sitemap_host_state(host TEXT PRIMARY KEY,last_attempt TEXT NOT NULL,attempts INTEGER NOT NULL DEFAULT 0);

CREATE TABLE sources(host TEXT PRIMARY KEY, trust TEXT NOT NULL, discovered_from TEXT, first_seen TEXT, last_seen TEXT);

CREATE TABLE worker_heartbeats(name TEXT PRIMARY KEY,pid INTEGER NOT NULL,status TEXT NOT NULL,started_at TEXT NOT NULL,heartbeat_at TEXT NOT NULL);

CREATE TRIGGER preserve_document_version BEFORE UPDATE ON documents
WHEN OLD.sha256!=NEW.sha256 OR OLD.metadata!=NEW.metadata OR OLD.quality!=NEW.quality
BEGIN
 INSERT INTO document_versions(document_id,snapshot,archived_at) VALUES(OLD.id,
 json_object('id',OLD.id,'url',OLD.url,'title',OLD.title,'kind',OLD.kind,'host',OLD.host,'trust',OLD.trust,'state',OLD.state,'category',OLD.category,'body',OLD.body,'metadata',OLD.metadata,'fetched_at',OLD.fetched_at,'sha256',OLD.sha256,'quality',OLD.quality),strftime('%Y-%m-%dT%H:%M:%fZ','now'));
END;